PERMA FIX ENVIRONMENTAL SERVICES INC 10-K

ITEM 9A. CONTROLS AND PROCEDURES Evaluation of disclosure controls and procedures. We maintain disclosure controls and procedures that are designed to ensure that information required to be disclosed in our periodic reports filed with the Securities and Exchange Commission (the “Commission”) is recorded, processed, summarized and reported within the time periods specified in the rules and forms of the Commission and that such information is accumulated and communicated to our management, including the Chief Executive Officer (“CEO”) (Principal Executive Officer), and Chief Financial Officer (“CFO”) (Principal Financial Officer), as appropriate to allow timely decisions regarding the required disclosure. In designing and assessing our disclosure controls and procedures, our management recognizes that any controls and procedures, no matter how well designed and operated, can provide only reasonable assurance of achieving their stated control objectives and are subject to certain limitations, including the exercise of judgment by individuals, the difficulty in identifying unlikely future events, and the difficulty in eliminating misconduct completely. Our management, with the participation of our CEO and CFO, evaluated the effectiveness of our disclosure controls and procedures pursuant to Rule 13a-15(e) and 15d-15(e) of the Securities Exchange Act of 1934, as amended. Based upon this assessment, our CEO and CFO have concluded that our disclosure controls and procedures were not effective as of December 31, 2025, due to a material weakness in our internal control over financial reporting as set forth below. Management’s Report on Internal Control over Financial Reporting Our management is responsible for establishing and maintaining adequate internal control over financial reporting, as such term is defined in Rules 13a-15(f) and 15d-15(f) of the Securities Exchange Act of 1934. Internal control over financial reporting is designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with accounting principles generally accepted in the United States of America. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements or fraudulent acts. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate. A control system, no matter how well designed, can provide only reasonable assurance with respect to financial statement preparation and presentation. Internal control over financial reporting includes those policies and procedures that (i) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the Company; (ii) provide reasonable assurance that transactions are recorded as necessary to permit the preparation of the consolidated financial statements in accordance with generally accepted accounting principles in the United States of America, and that receipts and expenditures of the Company are being made only in accordance with appropriate authorizations of management and directors of the Company; and (iii) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use or disposition of the Company’s assets that could have a material effect on the consolidated financial statements. Management, with the participation of our CEO and CFO, conducted an assessment of the effectiveness of internal control over financial reporting as of December 31, 2025, based on the framework in Internal Control – Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (“COSO”). Based on this assessment, management and our CEO and CFO concluded that our internal controls over financial reporting were not effective as of December 31, 2025, due to the following: For the Treatment Segment, management did not have a completeness check control effectively designed and implemented that would provide assurance that revenue for waste disposal was appropriately accounted for as part of the period-end revenue reconciliation process. The material weakness identified resulted in errors in our books and records which led to identified adjustments. The errors arising from the underlying revenue adjustments were not material to the financial statements previously reported in any interim or annual period. However, the control deficiency could result in misstatements of Treatment Segment revenue that could result in a material misstatement to the annual or interim consolidated financial statements. Accordingly, we have determined that the control deficiency constitutes a material weakness. Remediation of Material Weakness in Internal Control Over Financial Reporting We are in the process of developing and implementing a remediation plan to strengthen our internal controls. This remediation plan includes implementing completeness checks and additional reconciliation procedures, as it relates to processed waste and our inventory waste management systems at our Treatment Segment. We are committed to maintaining a strong internal control environment and believe that these remediation efforts will represent significant improvements in our controls. We have begun implementing certain elements of this plan; however, some of these steps will take time to be fully integrated and confirmed to be effective and sustainable. Additional controls may also be required over time. Until the remediation steps set forth above are fully implemented and tested, the material weakness described above will continue to exist. This Form 10-K does not include an attestation report of the Company’s independent registered public accounting firm regarding internal control over financial reporting. Since the Company is not a large accelerated filer or an accelerated filer, management’s report was not subject to attestation by the Company’s independent registered public accounting firm pursuant to the rules of the Commission that permit the Company to provide only management’s report in this Form 10-K. Changes in Internal Control over Financial Reporting Other than the aforementioned material weakness, there have been no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Exchange Act) during our most recently completed fiscal quarter that have materially affected, or are reasonably likely to materially affect, our internal control over financial reporting. 72 ITEM 9B. OTHER INFORMATION (a) None. (b) During the quarter ended December 31, 2025, no director or “officer” (as defined in Rule 16a-1(f)) of the Company adopted or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K. ITEM 9C. DISCLOSURE REGARDING FOREIGN JURISDICTIONS THAT PREVENT INSPECTIONS Not Applicable. PART III ITEM 10. DIRECTORS, EXECUTIVE OFFICERS AND CORPORATE GOVERNANCE DIRECTORS The following table sets forth, as of the date of this Report, information concerning our Board of Directors (the “Board”): NAME AGE POSITION Lieutenant General (LTG) (ret.) Thomas P. Bostick 69 Director Dr. Louis F. Centofanti 82 Director; Executive Vice President (“EVP”) of Strategic Initiatives Mr. Mark J. Duff 63 Director; President and Chief Executive Officer (“CEO”) Ms. Kerry C. Duggan 47 Director Mr. Joseph T. Grumski 64 Director The Honorable Joe R. Reeder 78 Director Mr. Larry M. Shelton 72 Chairman of the Board The Honorable Zach P. Wamp 68 Director Mr. Mark A. Zwecker 75 Director Director Information Our directors and executive officers, their ages, the positions with us held by each of them, the periods during which they have served in such positions and a summary of their recent business experience are set forth below. Each of the biographies of the current directors listed below also contains information regarding such person’s service as a director, business experience, director positions with other public companies held currently or at any time during the past five years, and the experience, qualifications, attributes and skills that our Board considered in nominating or appointing each of them to serve as one of our directors. LTG (ret.) Thomas P. Bostick LTG (ret.) Bostick, a director since August 2020, is currently the CEO of Bostick Global Strategies, LLC, a position he has held since July 2016. Bostick Global Strategies, LLC, provides strategic advisory support in the areas of engineering, environmental sustainability, human resources, biotechnology, education, executive coaching, and Agile Project Management. In February 2021, LTG (ret.) Bostick was selected by U. S. Senator Jack Reed, former Chairman of the Senate Armed Services Committee, to serve as a member of the Naming Commission consisting of eight appointed individuals, tasked with renaming Confederate-named military bases and property. In 2023, the Secretary of the Army and the Chief of Staff of the Army requested LTG (ret.) Bostick’s assistance in transforming U.S. Army Recruiting Command (“USAREC”). LTG (ret.) Bostick worked with the U.S. Army to develop a plan which USAREC has successfully executed. LTG (ret.) Bostick previously served (from November 2017 to February 2020) as the Chief Operating Officer (“COO”) and President of Intrexon Bioengineering, a division of Intrexon Corporation (formerly Nasdaq: XON; now Nasdaq: PGEN). Intrexon Bioengineering addresses global challenges across food, agriculture, environmental, energy, and industrial fields by advancing biologically engineered solutions to improve sustainability and efficiency. Since October 2020, LTG (ret.) Bostick has served as a board member of CSX Corporation (Nasdaq: CSX), a publicly-held rail transportation company, and since December 2020, as a member of both the Finance Committee and the Governance Committee of CSX Corporation. Since June 2021, LTG (ret.) Bostick has served on the Board of Trustees of Fidelity Equity and High Income Funds overseeing equity funds and high yield funds sponsored by Fidelity Investments, Inc., a privately-owned investment management company. LTG (ret.) Bostick continues to serve as a board member for several other privately-held and nonprofit organizations. LTG (ret.) Bostick was named as one of 2021’s Most Influential Black Corporate Directors by Savoy Magazine, a national publication that showcases and drives positive dialogue about Black culture. In 2024, the Association of Graduates selected LTG (ret.) Bostick as a Distinguished Graduate of the U.S. Military Academy at West Point. 73 LTG (ret.) Bostick has had a distinguished career in the U.S. military, retiring from the U.S. Army in July 2016 with the rank of Lieutenant General. Prior to his retirement, LTG (ret.) Bostick held a variety of positions within the U.S. Army, including the 53 rd Chief of Engineers and Commanding General, U.S. Army Corps of Engineers (2012-2016) and Deputy Chief of Staff and Director of Human Resources, U.S. Army (2009-2012). LTG (ret.) Bostick has been awarded many military honors and decorations during his military career, including the Distinguished Service Medal, the Defense Superior Service Medal, and the Bronze Star Medal. As a White House Fellow, one of America’s most prestigious programs for leadership and public service, LTG (ret.) Bostick was a special assistant to the Secretary of Veterans Affairs . LTG (ret.) Bostick graduated with a Bachelor of Science degree from the U.S. Military Academy at West Point and later returned to the Academy to serve as an Associate Professor of Mechanical Engineering. He holds Master’s degree in both Civil Engineering and Mechanical Engineering from Stanford University, an MBA from Oxford University, and a Doctorate in Systems Engineering from George Washington University. He is a Member of the National Academy of Engineering and the National Academy of Construction. LTG (ret.) Bostick’s distinguished career in both the government and private sectors brings valuable experience and insight into solving complex issues domestically and globally. His extensive knowledge and problem-solving experiences enhance the Board’s ability to address significant challenges in the nuclear market and led the Board to conclude that he should serve as a director. Dr. Louis F. Centofanti Dr. Centofanti, the founder of the Company and a director of the Company since its inception in 1991, currently holds the position of EVP of Strategic Initiatives. From March 1996 to September 8, 2017, and from February 1991 to September 1995, Dr. Centofanti held the position of President and CEO of the Company. Dr. Centofanti served as Chairman of the Board from the Company’s inception in February 1991 until December 16, 2014. In January 2015, Dr. Centofanti was appointed by the U.S Secretary of Commerce Penny Prizker to serve on the U.S. Department of Commerce’s Civil Nuclear Trade Advisory Committee (“CINTAC”). The CINTAC is composed of industry representatives from the civil nuclear industry and meets periodically throughout the year to discuss the critical trade issues facing the U.S. civil nuclear sector. From 1985 until joining the Company, Dr. Centofanti served as Senior Vice President (“SVP”) of USPCI, Inc., a large publicly-held hazardous waste management company, where he was responsible for managing the treatment, reclamation and technical groups within USPCI. In 1981, he and Mark Zwecker, a current Board member of the Company, founded PPM, Inc. (later sold to USPCI), a hazardous waste management company specializing in treating PCB (Polychlorinated biphenyls)-contaminated oil. From 1978 to 1981, Dr. Centofanti served as Regional Administrator of the U.S. Department of Energy (“DOE”) for the southeastern region of the United States. Dr. Centofanti has a Ph.D. and a M.S. in Chemistry from the University of Michigan, and a B.S. in Chemistry from Youngstown State University. 74 As founder of Perma-Fix and PPM, Inc., and as a senior executive at USPCI, Dr. Centofanti combines extensive business experience in the waste management industry with a drive for innovative technology which is critical for a waste management company. In addition, his service in the government sector provides a solid foundation for the continuing growth of the Company, particularly within the Company’s Nuclear business. Dr. Centofanti has been instrumental in the research and development of the Company’s new PFAS (per- and polyfluoroalkyl substances) technology. Dr. Centofanti’s comprehensive understanding of the Company’s operations and his extensive knowledge of its history, coupled with his drive for innovation and excellence, positions Dr. Centofanti to optimize our role in this competitive, evolving market, and led the Board to conclude that he should serve as a director. Mark J. Duff Mr. Duff, the Company’s President and CEO since September 2017, has served as a Board member since April 2023. Since joining the Company in 2016, Mr. Duff has developed and implemented strategies to meet growth objectives in both the Treatment and Services Segments. In the Treatment Segment, he continues to upgrade each facility to increase efficiency and modernize and broaden treatment capabilities to meet the changing markets associated with the waste management industry. This growth includes expanding into international and additional market sectors, including development of new clients in the commercial power and oil and gas industries, and advancing new technology to treat PFAS. In the Services Segment, which encompasses all field operations, he has completed the revitalization of business development programs, which has resulted in increased competitive procurement effectiveness, and broadened the market penetration within both the commercial and government sectors. Within the Services Segment, Mr. Duff has established a team of professionals with experience in conducting safe and efficient field operations while addressing complex technical challenges associated with removal of radioactive and hazardous waste contamination. Mr. Duff has over 40 years of management and technical experience in the DOE and the DOW environmental and construction markets as, variously, a corporate officer, senior project manager, co-founder of a consulting firm, and federal employee. Mr. Duff has an MBA from the University of Phoenix and received his B.S. from the University of Alabama. Mr. Duff’s extensive experience in the government sector has proven invaluable in the continuing growth of the Company’s Treatment and Services Segments. Mr. Duff’s comprehensive understanding of the Company’s operations, his proven leadership skills, and his drive for new innovation in this evolving industry and market, led the Board to conclude that he should serve as a director. Kerry C. Duggan Ms. Duggan has served as a director of the Company since May 2021. She is a nationally recognized policy leader, strategist, corporate board director, and highly sought-after global speaker. In 2017, Ms. Duggan founded SustainabiliD, which rebranded in January 2025 to Energy Security Partners (ESP), a global strategic advisory firm headquartered in Detroit’s Newlab. As Founder and CEO, she counsels multinational corporations, investors, universities, and public-sector leaders on the intersection of energy, security, and economic development, delivering pragmatic, place-based solutions that reduce risk and enhance resilience. In her previous government experience, Ms. Duggan played a key role in shaping national policy as climate and energy advisor to then-Vice President Joe Biden and Deputy Director of President Obama’s Detroit Task Force. She later served as a delegate to the Biden-Sanders Unity Task Force, on the Biden-Harris Transition Team, and was appointed to the Secretary of Energy Advisory Board (“SEAB”) under Secretary Jennifer Granholm. Previously, at the DOE, she held senior leadership roles, including Liaison to the City of Detroit under Secretary Ernest Moniz, Director of Legislative, Regulatory, and Urban Affairs, and Stakeholder Engagement Director for the Office of Energy Efficiency & Renewable Energy (“EERE”). She is a two-time appointee of Michigan Governor Gretchen Whitmer to the Michigan Council on Climate Solutions (recently reappointed in August 2025), served on the bipartisan Growing Michigan Together Council’s Infrastructure & Place Working Group, and was appointed to the inaugural Detroit Women’s Commission by former Detroit Mayor Mike Duggan. Beyond government, Ms. Duggan was a Partner with the Honorable Thomas J. Ridge’s firm and is on faculty at the University of Michigan, where she founded both the School for Environmental and Sustainability (SEAS) Clinic in Detroit and the Michigan Business Sustainability Network. She previously served on the external advisory board of the University of Michigan’s Erb Institute for Global Sustainable Enterprise and was a board member at the Global Council for Science and the Environment. In 2018, Ms. Duggan was named to the prestigious “40 Under 40” list by Crain’s Detroit Business and was later named to their inaugural “Notable Leaders in Sustainability” list. She is also an angel investor, film executive producer, and was a U.S. State Department speaker. Since 2024, Ms. Duggan has been a member of the board of directors at BlueGreen Water Technologies, a privately-held company leading the charge in helping preserve and promote health and safety of water bodies worldwide. She also serves on the advisory boards for a number of privately-held companies and funds addressing environmental, energy, and climate challenges, including Our Next Energy, Inc. (ONE), Aclima, Inc., BlueConduit, Commonweal Ventures, Arctaris Impact Investors, Vesta, B1OS, and Zero Circle, among others. Ms. Duggan attended the University of Vermont, where she completed her Bachelor of Science degree in environmental studies. Ms. Duggan also has a Master of Science degree in natural resource policy & behavior from the University of Michigan. Ms. Duggan’s career in both the government and private sectors brings valuable experience and insight into solving complex issues. Her extensive knowledge and problem-solving experiences led the Board to conclude that she should serve as a director. 75 Joseph T. Grumski Mr. Grumski, a director of the Company since February 2020, has served since April 2020 as the CEO of TAS Energy Inc. (“TAS”), a wholly-owned subsidiary of Comfort Systems USA, Inc. (NYSE: FIX), a publicly-held company that provides mechanical and electrical contracting services in locations throughout the United States. Mr. Grumski also served as the President of TAS Energy, Inc. from April 2020 to December 2023. Prior to the acquisition of TAS by Comfort Systems USA, Inc., Mr. Grumski served as President and CEO and a board member of TAS from May 2013 to March 2020. From 1997 to February 2013, Mr. Grumski was employed with Science Applications International Corporation (“SAIC”) (NYSE: SAIC), a publicly-held company that provides government services and information technology support. During his employment with SAIC, Mr. Grumski held various senior management positions, including the positions of President of SAIC’s Energy, Environment & Infrastructure (“E2I”) commercial subsidiary and General Manager of the E2I Business Unit. Mr. Grumski’s accomplishments with SAIC included growing SAIC’s $300 million federal environmental business to a top ranked, $1.1 billion business. Mr. Grumski began his career with Gulf Oil Company and progressed through senior level engineering, operations management, and program management positions with various other companies, including Westinghouse Electric Corporation and Lockheed Martin, Inc. Mr. Grumski received a B.S. in Mechanical Engineering from the University of Pittsburgh and a M.S in Mechanical Engineering from West Virginia University. Mr. Grumski has had an extensive career in solving and overseeing solutions to complex issues involving both domestic and international concerns. In addition, his extensive experience in companies that provide services to the government sector, as well as his experience in the commercial sector, provide solid experience for the continuing growth of the Company’s Treatment and Services Segment. Mr. Grumski’s extensive knowledge and problem-solving experiences, executive operational leadership experience and governance experience enhance the Board’s ability to address significant challenges in the nuclear market and led the Board to conclude that he should serve as a director. The Honorable Joe R. Reeder Mr. Reeder, a director since 2003, is a principal shareholder of the law firm of Greenberg Traurig LLP, one of the world’s largest law firms, with 51 offices and over 3,000 attorneys worldwide. Mr. Reeder served as Shareholder-in-Charge of the law firm’s Mid-Atlantic Region offices for ten years. His clientele includes celebrities, heads of state, sovereign nations, international corporations, and law firms. As the U.S. Army’s 14th Undersecretary (1993-97), he also served three years as Chairman of the Panama Canal Commission’s Board, overseeing a multibillion-dollar infrastructure program. For the past 23 years, he has served on the Canal’s International Advisory Board. He has written extensively in leading journals on corporate cybersecurity and has served on the boards of the USO; the National Defense Industry Association (“NDIA”), chairing NDIA’s Ethics Committee; the Armed Services YMCA; the Marshall Legacy Institute; and many other private companies and charitable organizations. He served as a director of ELBIT Systems of America, LLC, (2005-2020), a subsidiary of Elbit Systems Ltd. (Nasdaq: ESLT), a multi-billion-dollar provider of defense, homeland security, and commercial aviation system solutions. Mr. Reeder has also served as director of WashingtonFirst Bank, the bank subsidiary of WashingtonFirst Bankshares, Inc. (Nasdaq: WSBI), from 2004 to 2017; Sandy Spring Bancorp, Inc. (Nasdaq: SASR), from 2018 to 2020; and Trustar Bank, a Virginia state-chartered bank (2022 - present). 76 After two successive 4-year appointments by Virginia Governors Mark Warner and Tim Kaine, Mr. Reeder served seven years as Chairman of two Commonwealth of Virginia military boards, and 10 years on the USO Board of Governors. Appointed by former Governor Terry McAuliffe to the Virginia Military Institute’s Board of Visitors (2014), he was reappointed in 2018 by former Virginia Governor Ralph Northam, with his term ending in 2022. Mr. Reeder has been a television commentator on legal and national security issues, is consistently named a Super Lawyer for Washington, D.C., and has served six years after his appointment in 2018 to the U.S. Court of Federal Claims Advisory Council Bid Protest Committee. A West Point graduate who served in the 82nd Airborne Division after Ranger School, Mr. Reeder earned his J.D. from the University of Texas, and his L.L.M. from Georgetown University. He has devoted his career to resolving complex domestic and international issues and continues to enhance the Board in addressing major challenges in the nuclear market and day-to-day corporate and Washington D.C.- related challenges. Mr. Reeder’s unique background in law, business, and the highest levels of government led the Board to conclude that he should serve as a director. Mr. Larry M. Shelton Mr. Shelton, a director since July 2006, has also held the position of Chairman of the Board of the Company since December 2014. Mr. Shelton served as the Chief Financial Officer (“CFO”) of S K Hart Management, LLC, a private investment management company (“S K Hart Management”), from 1999 until August 2018. Mr. Shelton served as President of Pony Express Land Development, Inc. (an affiliate of SK Hart Management), a privately held land development company, from January 2013 until August 2017, and has served on its board since December 2005. Mr. Shelton served as Director and CFO of S K Hart Ranches (PTY) Ltd, a private South African Company involved in agriculture, from March 2012 to March 2020. Mr. Shelton has over 20 years of experience as an executive financial officer for several waste management companies, including as CFO of Envirocare of Utah, Inc. (now EnergySolutions, Inc. (1995–1999)), a privately held nuclear waste services company, and as CFO of USPCI, Inc. (1982–1987), then a NYSE- listed public company engaged in the hazardous waste business. Since July 1989, Mr. Shelton has served on the board of Subsurface Technologies, Inc., a privately held company specializing in providing environmentally sound innovative solutions for water well rehabilitation and development. Mr. Shelton has a B.A. in accounting from the University of Oklahoma. With his years of accounting experience as CFO of various companies, including a number of waste management companies, Mr. Shelton combines extensive industry knowledge and understanding of accounting principles, financial reporting requirements, evaluating and overseeing financial reporting processes and business matters. These factors led the Board to conclude that he should serve as a director. The Honorable Zach P. Wamp Mr. Wamp, a director since January 2018, is currently the President of Zach Wamp Consulting, a position he has held since 2011. As the President and owner of Zach Wamp Consulting, he has served some of the most prominent companies from Silicon Valley to Wall Street as a business development consultant and advisor. From September 2013 to November 2017, Mr. Wamp chaired the Board of Directors for Chicago Bridge and Iron Federal Services, LLC (a subsidiary of Chicago Bridge & Iron Company, NYSE: CBI, which provides critical services primarily to the U.S. government). From January 1995 to January 2011, Mr. Wamp served as a member of the U.S. House of Representatives from Tennessee’s 3 rd Congressional District. Among his many accomplishments, which included various leadership roles in the advancement of education and science, Mr. Wamp was instrumental in the formation and success of the Tennessee Valley Technology Corridor, which created thousands of jobs for Tennesseans in the areas of high-tech research, development, and manufacturing. During his career in the political arena, Mr. Wamp served on several prominent subcommittees during his 14 years on the House Appropriations Committee, including serving as a “ranking member” of the Subcommittee on Military Construction and Veterans Affairs and Related Agencies. Mr. Wamp has been a regular panelist on numerous media outlets and has been featured in a number of national publications effectively articulating sound social and economic policy. Mr. Wamp’s business career has also included work in the real estate sector for a number of years as a licensed industrial-commercial real estate broker, for which he was named Chattanooga’s Small Business Person of the Year. 77 Mr. Wamp has an extensive career in solving and overseeing solutions to complex issues involving domestic concerns. In addition, his wide-ranging career, particularly with respect to his government-related work, provides solid experience for the continuing growth of the Company’s Treatment and Services Segments. His extensive knowledge and problem-solving expertise enhance the Board’s ability to address significant challenges in the nuclear market and led the Board to conclude that he should serve as a director. Mr. Mark A. Zwecker Mr. Zwecker, a director since the Company’s inception in January 1991, previously served as the CFO and a board member of JCI US Inc. from 2013 to 2019. JCI US Inc. is a telecommunications company and wholly-owned subsidiary of Japan Communications, Inc. (Tokyo Stock Exchange (Securities Code: 9424)), which provides cellular service for M2M (machine to machine) applications. From 2006 to 2013, Mr. Zwecker served as Director of Finance for Communications Security and Compliance Technologies, Inc., a wholly-owned subsidiary of JCI US Inc. that develops security software products for the mobile workforce. Mr. Zwecker has held various other senior management positions, including President of ACI Technology, LLC, a privately-held IT services provider, and Vice President of Finance and Administration for American Combustion, Inc., a privately-held combustion technology solutions provider. In 1981, with Dr. Centofanti, Mr. Zwecker co-founded a start-up, PPM, Inc., a hazardous waste management company. He remained with PPM, Inc. until its acquisition in 1985 by USPCI. Mr. Zwecker has a B.S. in Industrial and Systems Engineering from the Georgia Institute of Technology and an M.B.A. from Harvard University. As a director since our inception, Mr. Zwecker’s understanding of our business provides valuable insight to the Board. With years of experience in operations finance for various companies, including a number of waste management companies, Mr. Zwecker combines extensive knowledge of accounting principles, financial reporting rules and regulations, the ability to evaluate financial results, and understanding of financial reporting processes. He has an extensive background in operating complex organizations. Mr. Zwecker’s experience and background position him well to serve as a member of our Board. These factors led the Board to conclude that he should serve as a director. BOARD OF DIRECTOR INDEPENDENCE The Board has determined that each director, other than Dr. Centofanti and Mark Duff, is “independent” within the meaning of applicable Nasdaq rules. Each of Dr. Centofanti and Mark Duff is not deemed to be an “independent director” because of his employment as an executive officer of the Company. BOARD LEADERSHIP STRUCTURE We currently separate the roles of Chairman of the Board and CEO. The Board believes that this leadership structure promotes balance between the Board’s independent authority to oversee our business, and the CEO and his management team, who manage the business on a day-to-day basis. The Company does not have a written policy with respect to the separation of the positions of Chairman of the Board and CEO. The Company believes it is important to retain its flexibility to allocate the responsibilities of the offices of the Chairman and CEO in any way that is in the best interests of the Company at a given point in time; therefore, the Company’s leadership structure may change in the future as circumstances may dictate. Mark A. Zwecker, a current member of our Board, continues to serve as the Independent Lead Director, a position he has held since February 2010. The Lead Director’s role includes: ● convening and chairing meetings of the non-employee directors as necessary from time to time and Board meetings in the absence of the Chairman of the Board; ● acting as liaison between directors, committee chairs and management; ● serving as an information source for directors and management; and ● carrying out responsibilities as the Board may delegate from time to time. 78 COMMITTEES OF THE BOARD Corporate Governance and Nominating Committee We have a separately-designated standing Corporate Governance and Nominating Committee (the “Governance and Nominating Committee”). Members of the Governance and Nominating Committee during 2025 were Joe R. Reeder (Chairperson), Thomas P. Bostick, Kerry C. Duggan and Zach P. Wamp. All members of the Nominating Committee are and were “independent” as that term is defined by current Nasdaq listing standards. The Corporate Governance and Nominating Committee has specific responsibilities which include: ● considering and making recommendations to the Board regarding the composition and chairmanship of the committees of our Board; ● developing and making recommendations to our Board regarding corporate governance guidelines which include policies and procedures that promote honest and ethical conduct and prohibit conflict of interest in business conduct; ● overseeing evaluations of the Board’s performance, including committees of the Board; and ● overseeing Company practices and initiatives with respect to environmental, social and governance matters. The Governance and Nominating Committee recommends to the Board of Directors candidates to fill vacancies on the Board and the nominees for election as directors at each annual meeting of stockholders. In making such recommendations, the Governance and Nominating Committee takes into account information provided to them from the candidates, as well as the Committee’s own knowledge and information obtained through inquiries to third parties to the extent the Committee deems appropriate. The Company’s Bylaws sets forth certain minimum director qualifications to qualify as a nominee for election as a director. To qualify for nomination or for election as a director, an individual must: ● be an individual at least 21 years of age who is not under legal disability; ● have the ability to be present, in person, at all regular and special meetings of the Board of Directors; ● not serve on the boards of more than three other publicly-held companies; ● satisfy the director qualification requirements of all environmental and nuclear commissions, boards or similar regulatory or law enforcement authorities to which the Company is subject so as not to cause the Company to fail to satisfy any of the licensing requirements imposed by any such authority; ● not be affiliated with, employed by or be a representative of, or have or acquire a material personal involvement with, or material financial interest in, any “Business Competitor” (as defined in the Bylaws); ● not have been convicted of a felony or of any misdemeanor involving moral turpitude; and ● have been nominated for election to the Board of Directors in accordance with the terms of the Bylaws. In addition to the minimum director qualifications as mentioned above, in order for any proposed nominee to be eligible to be a candidate for election to the Board of Directors, such candidate must deliver to the Governance and Nominating Committee a completed questionnaire with respect to the background, qualifications, stock ownership and independence of such proposed nominee. The Governance and Nominating Committee reviews each candidate’s qualifications to include considerations of: ● standards of integrity, personal ethics and values, commitment, and independence of thought and judgment; ● ability to represent the interests of the Company’s stockholders; ● ability to dedicate sufficient time, energy and attention to fulfill the requirements of the position; and ● diversity of skills and experience with respect to accounting and finance, management and leadership, business acumen, vision and strategy, charitable causes, business operations, and industry knowledge. 79 The Governance and Nominating Committee does not assign specific weight to any particular criteria, and no particular criterion is necessarily applicable to all prospective nominees. The Governance and Nominating Committee does not have a formal policy for the consideration of diversity in identifying nominees for directors. However, d iversity is one of the many factors taken into account when considering potential candidates to serve on the Board of Directors. The Company recognizes that diversity in professional and life experiences may include consideration of gender, race, cultural background or national origin, in identifying individuals who possess the qualifications that the Governance and Nominating Committee believes are important to be represented on the Board. The Company also views and values diversity from the perspective of professional and life experiences, as well as geographic location, representative of the markets in which we do business. The Company believes that the inclusion of diversity as one of many factors considered in selecting director nominees is consistent with the Company’s goal of creating a board of directors that best serves our needs and those of our shareholders. Stockholder Nominees The Governance and Nominating Committee will consider properly submitted stockholder nominations for candidates for membership on the Board from stockholders who meet each of the requirements set forth in the Bylaws, including, but not limited to, the requirements that any such stockholder own at least 1% of the Company’s shares of the Common Stock entitled to vote at the meeting on such election, has held such shares continuously for at least one full year, and continuously holds such shares through and including the time of the annual or special meeting. Nominations of persons for election to the Board may be made at any Annual Meeting of Stockholders, or at any Special Meeting of Stockholders called for the purpose of electing directors. Any stockholder nomination (“Proposed Nominee”) must comply with the requirements of the Company’s Bylaws and the Proposed Nominee must meet the minimum qualification requirements as discussed above. For a nomination to be made by a stockholder, such stockholder must provide advance written notice to the Governance and Nominating Committee, delivered to the Company’s principal executive office address (i) in the case of an Annual Meeting of Stockholders, no later than the 90 th day nor earlier than the 120 th day prior to the anniversary date of the immediately preceding Annual Meeting of Stockholders; and (ii) in the case of a Special Meeting of Stockholders called for the purpose of electing directors, not later than the 10 th day following the day on which public disclosure of the date of the Special Meeting of Stockholders is made. The Governance and Nominating Committee will evaluate the qualification of the Proposed Nominee and the Proposed Nominee’s disclosure and compliance requirements in accordance with the Company’s Bylaws. If the Board, upon the recommendation of the Governance and Nominating Committee, determines that a nomination was not made in accordance with the Company’s Bylaws, the Chairman of the Meeting shall declare the nomination defective, and it will be disregarded. Audit Committee We have a separately designated standing Audit Committee of our Board established in accordance with Section 3(a)(58)(A) of the Exchange Act. Members of the Audit Committee are Mark A. Zwecker (Chairperson), Joseph T. Grumski and Larry M. Shelton. Our Board has determined that each of our Audit Committee members is independent within the meaning of the rules of the Nasdaq. Additionally, our Board has also determined that all members of our Audit Committee are “audit committee financial experts” as defined by Item 407(d)(5)(ii) of Regulation S-K of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). The Audit Committee has also discussed with Grant Thornton, LLP, the Company’s independent registered accounting firm, the matters required to be discussed by Public Company Accounting Oversight Board (“PCAOB”) Auditing Standard No. 16 (Communications with Audit Committee). 80 Compensation and Stock Option Committee The Compensation and Stock Option Committee (the “Compensation Committee”) reviews and recommends to the Board the compensation and benefits of all of the Company’s officers and reviews general policy matters relating to compensation and benefits of the Company’s employees. The Compensation Committee also administers the Company’s stock option plans. The Compensation Committee has the sole authority to retain and terminate a compensation consultant, as well as to approve the consultant’s fees and other terms of engagement. It also has the authority to obtain advice and assistance from internal or external legal, accounting or other advisors. No compensation consultant was employed during 2025. Members of the Compensation Committee during 2025 were Joseph T. Grumski (Chairperson), Zach P. Wamp and Mark A. Zwecker. None of the members of the Compensation Committee has been or is an officer or employee of the Company or has had or has any relationship with the Company requiring disclosure under applicable Commission regulations. Strategic Advisory Committee We have a separately designated Strategic Advisory Committee (the “Strategic Committee”). The primary functions of the Strategic Committee are to investigate and evaluate strategic alternatives available to the Company and to work with management on long-range strategic planning and identification of potential new business opportunities. The members of the Strategic Advisory Committee are Dr. Louis F. Centofanti (Chairperson), Kerry C. Duggan, Joe R. Reeder, and Zach P. Wamp. Demand Review Committee The Demand Review Committee was established in March 2025 to review, analyze and evaluate shareholder demands and to make recommendations to the Board with respect to such demands. The Demand Review Committee is ad hoc, in that composition of the Demand Review Committee will necessarily change in response to specific shareholder demand and will meet at such times as necessary or advisable. The Board has adopted a written charter for each of the Audit Committee, the Compensation Committee, the Governance and Nominating Committee, the Strategic Advisory Committee, and the Demand Review Committee, each of which is available on our website at https://ir.perma-fix.com/governance-docs. EXECUTIVE OFFICERS OF THE REGISTRANT The following table sets forth, as of the date hereof, information concerning our executive officers: NAME AGE POSITION Mr. Mark Duff 63 President and CEO Mr. Ben Naccarato 63 Chief Financial Officer (“CFO”), EVP, and Secretary Mr. Troy Eshleman 56 Chief Operating Officer (“COO”) Dr. Louis Centofanti 88 EVP of Strategic Initiatives Mr. Richard Grondin 67 EVP of Hanford and International Waste Operations Mr. Mark Duff See “Director – Mark J. Duff” in this section for information on Mr. Duff. Mr. Ben Naccarato Mr. Naccarato has served as the Company’s CFO since February 2009. Mr. Naccarato joined the Company in September 2004, holding the position of Vice President of Finance for the Company’s Industrial Segment until May 2006, when he was named Vice President, Corporate Controller/Treasurer. Mr. Naccarato has over 38 years of experience in senior financial positions in the waste management and used oil industries. Mr. Naccarato was the CFO of a privately-held company in the fuel distribution and used waste oil industry from 2002 to 2004 and prior to that served in numerous senior financial roles in the waste management industry in both the US and Canada. Mr. Naccarato is a graduate of the University of Toronto with a Bachelor of Commerce and Finance Degree and is a Chartered Professional Accountant, Certified Management Accountant (CPA, CMA). Since March 2021, Mr. Naccarato has served as an independent director and as a member of the Audit Committee, the Compensation Committee, and the Strategic Initiatives Committee of PyroGenesis, Inc., a high-tech company involved in the design, development, manufacture and commercialization of advanced plasma processes and products and whose stock is listed for trading on the Toronto Stock Exchange. 81 Mr. Troy Eshleman Mr. Troy Eshleman was appointed to the position of COO by the Company’s Board effective January 23, 2025. Mr. Troy Eshleman was originally hired by the Company on January 6, 2025 as Vice President of Operations. Mr. Eshleman has more than 35 years’ experience in radioactive waste management facility operations, environmental remediation, hazardous and radioactive material logistics, and facility decommissioning. Mr. Eshleman specializes in commissioning commercially viable solutions to radioactive waste challenges and improving facility operational performance. Prior to joining the Company, Mr. Eshleman founded in 2019 and served until 2024 as the President of Oakleaf Environmental, Inc., a consulting firm specializing in mergers and acquisitions, business strategy and integration, and technical support to a variety of private equity and commercial clients, as well as the U.S Department of Energy, and Naval Reactors, the U.S. government office that has comprehensive responsibility for the safe and reliable operation of the United States Navy’s nuclear reactors. Mr. Eshleman was previously employed by EnergySolutions, Inc., a privately-held nuclear services company that is one of the largest processors of low level radioactive waste (LLW) in America, and its predecessor companies for 27 years in a variety of positions of increasing responsibility focused on the leadership of North American waste processing facility operations, nuclear power plant decommissioning, logistics, international project management, and business development roles, including as SVP of Corporate Business Development and Strategy, SVP of Commercial Waste Processing, SPV of Global Logistics, SVP of Decommissioning Operations, and SVP of EnergySolutions Italia S.r.l. Mr. Eshleman holds a B.S. in Civil Engineering Technology from the University of Pittsburgh. Dr. Louis Centofanti See “Director – Dr. Louis F. Centofanti” in this section for information on Dr. Centofanti. Mr. Richard Grondin Mr. Grondin was appointed to the position of EVP of Hanford and International Waste Operations by the Board of Directors effective January 23, 2025. Prior to his appointment to such office, Mr. Grondin previously served as the Company’s EVP of Waste Treatment Operations since July 2020. Since joining the Company in 2002, Mr. Grondin has held various positions within the Company’s Treatment Segment, including Vice President of Technical Services, Vice President/General Manager of the Perma-Fix Northwest Richland, Inc. Facility and Vice President of Western Operations. Mr. Grondin, a Project Management Professional, has over 35 years of management and technical experience in the highly regulated and specialized radioactive/hazardous waste management industry with the majority of his experience concentrated on managing start-up waste management processing and disposal facilities for four different organizations in the commercial and government sectors. Prior to joining the Company, Mr. Grondin held the position of Vice President of Mixed Waste Operations for Allied Technology Group in Richland, Washington; Vice President of Operations for Waste Control Specialists in Andrews Texas; and Technical Manager/Director of Operations for Rollins Environmental Services Facility in Deer Trail, Colorado. Mr. Grondin is recognized in the United States and Canada as an authority in hazardous and mixed waste treatment. Mr. Grondin has a Diploma of Collegial Studies in Pure and Applied Sciences from CEGEP of Amiante (Thetford-Mines, Canada) and Analytical Chemistry Techniques from CEGEP of Ahuntsic (Montreal, Canada), a Geography minor from Montreal University (Montreal, Canada) and a Certificate of Business Management from the School of Higher Commercial Studies from Montreal University (Montreal, Canada). Certain Relationships There are no family relationships between any of the directors or executive officers. Section 16(a) Beneficial Ownership Reporting Compliance Section 16(a) of the Exchange Act, and the regulations promulgated thereunder require our executive officers and directors and beneficial owners of more than 10% of our Common Stock to file reports of ownership and changes of ownership of our Common Stock with the Commission, and to furnish us with copies of all such reports. Based solely on a review of the copies of such reports furnished to us and written information provided to us, we believe that during 2025, all of our executive officers, directors, or beneficial owners of more than 10% of our Common Stock timely filed reports under Section 16(a) with the exception of Dr. Louis Centofanti, a Board member and an executive officer, who failed to timely file a Form 4 for two transactions. 82 Schelhammer Capital Bank AG, a banking institution regulated by the banking regulations of Austria, has represented to the Company that as of March 2, 2026, it holds of record as a nominee for, and as an agent of, certain accredited investors, 1,627,324 shares of our Common Stock. Schelhammer Capital Bank AG has also represented to the Company that none of the investors, individually or as a group, as the term “group” is defined under Rule 13d-5(b) of the Exchange Act, beneficially owns more than 4.9% of our Common Stock. Additionally, the investors for whom Schelhammer Capital Bank AG acts as nominee with respect to such shares maintain full voting and dispositive power over the Common Stock beneficially owned by such investors, and Schelhammer Capital Bank AG has neither voting nor investment power over such shares. Accordingly, Schelhammer Capital Bank AG believes that (i) it is not the beneficial owner, as such term is defined in Rule 13d-3 of the Exchange Act, of the shares of Common Stock registered in Schelhammer Capital Bank AG’s name because (a) Schelhammer Capital Bank AG holds the Common Stock as a nominee only, (b) Schelhammer Capital Bank AG has neither voting nor investment power over such shares, and (c) Schelhammer Capital Bank AG has not nominated or sought to nominate, and does not intend to nominate in the future, any person to serve as a member of our Board; and (ii) it is not required to file reports under Section 16(a) of the Exchange Act or to file either Schedule 13D or Schedule 13G in connection with the shares of our Common Stock registered in the name of Schelhammer Capital Bank AG. If the representations of, or information provided by Schelhammer Capital Bank AG, are incorrect or Schelhammer Capital Bank AG was historically acting on behalf of its investors as a group, rather than on behalf of each investor independent of other investors, then Schelhammer Capital Bank AG and/or the investor group would have become a beneficial owner of more than 10% of our Common Stock on February 9, 1996, as a result of the acquisition on such date of 1,100 shares of our Preferred Stock that were convertible into a maximum of 256,560 shares of our Common Stock. If either Schelhammer Capital Bank AG or a group of Schelhammer Capital Bank AG’s investors became a beneficial owner of more than 10% of our Common Stock on February 9, 1996, or at any time thereafter, and thereby required to file reports under Section 16(a) of the Exchange Act, then Schelhammer Capital Bank AG has failed to file a Form 3 or any Forms 4 or 5 since February 9, 1996. (See “Item 12 - Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters – Security Ownership of Certain Beneficial Owners” for a discussion of Schelhammer Capital Bank AG’s current record ownership of our securities). Code of Ethics Our Code of Business Conduct and Ethics (“Code of Ethics”), which applies to our Board and all our employees, including our CEO and our senior financial officers, complies with applicable SEC rules and Nasdaq listing standards. and is available on our website at https://ir.perma-fix.com/governance-docs. The provisions of the Code of Ethics that apply to the CEO and our senior financial officers, including our CFO and our chief accounting officer, complies with the requirements imposed by the Sarbanes-Oxley Act of 2002 and the rules issued thereunder for codes of ethics applicable to such officers. If any amendments are made to the Code of Ethics, or any grants of waivers are made to any provision of the Code of Ethics, that are applicable to our CEO and our senior financial officers, we will promptly disclose the amendment or waiver and nature of such amendment or waiver on our website at the same web address. Insider Trading Arrangements and Policies We have adopted a Stock Trading, Reporting & Blackout Policy governing the purchase, sale, and/or other disposition of our securities by directors, officers, and employees, that we believe are reasonably designed to promote compliance with insider trading laws, rules, and regulations, and listing standards applicable to us. A copy of our Stock Trading Policy is filed as Exhibit 19 to this Annual Report on Form 10-K for the year ended December 31, 2025, and is also available on our website at https://ir.perma-fix.com/governance-docs. 83 ITEM 11. EXECUTIVE COMPENSATION Summary Compensation The following table summarizes the total compensation of the Company’s named executive officers (“NEOs”) for the fiscal years ended December 31, 2025, 2024 and 2023. Name and Principal Position Year Salary Bonus Option Awards Non-Equity Incentive Plan Compensation All other Compensation Total Compensation ($) ($) ($) (1) ($) (2) ($) (3) ($) Mark Duff 2025 417,155 — — — 35,926 453,081 President and CEO 2024 417,155 — — — 39,306 456,461 2023 382,367 — 140,840 187,435 37,453 748,095 Ben Naccarato 2025 332,811 — — — 59,374 392,185 EVP and CFO 2024 332,811 — — — 52,359 385,170 2023 310,867 — 80,480 152,386 51,744 595,477 Dr. Louis Centofanti 2025 277,346 — — — 31,206 308,552 EVP of Strategic Initiatives 2024 277,346 — — — 28,910 306,256 2023 259,060 — 60,360 126,990 39,015 485,425 Richard Grondin 2025 312,729 — — — 46,953 359,682 EVP of Hanford and International Waste 2024 285,267 — — — 41,330 326,597 Operations (4) 2023 266,458 — 60,360 130,617 40,890 498,325 Troy Eshleman 2025 313,846 — 298,861 — 11,424 624,131 COO (5) (1) Reflects the aggregate grant date fair value of awards computed in accordance with Accounting Standards Codification (“ASC”) 718, “Compensation – Stock Compensation.” Assumptions used in the calculation of this amount are included in “Part II – Item 8 – Financial Statements and Supplementary Data – Notes to Consolidated Financial Statements - Note 6 – Capital Stock, Stock Plans, Warrants and Stock Based Compensation.” (2) Represents performance compensation earned under the Company’s Management Incentive Plans (“MIPs”). None of the named executive officers earned performance compensation under his respective MIP for 2025. The 2025 MIP for each individual in the table is described under the heading “2025 MIPs.” (3) The amount shown for 2025 includes a monthly automobile allowance, insurance premiums (health, disability and life) paid by the Company on behalf of the NEO, and 401(k) matching contributions. Name Insurance Premium Auto Allowance 401(k) match Total Mark Duff $ 19,301 $ 9,000 $ 7,625 $ 35,926 Ben Naccarato $ 42,624 $ 9,000 $ 7,750 $ 59,374 Dr. Louis Centofanti $ 14,581 $ 9,000 $ 7,625 $ 31,206 Richard Grondin $ 30,203 $ 9,000 $ 7,750 $ 46,953 Troy Eshleman $ 1,122 $ 8,654 $ 1,648 $ 11,424 (4) On January 23, 2025, the Board appointed Mr. Grondin as the Company’s EVP of Hanford and International Waste Operations. Mr. Grondin previously held the position of EVP of Waste Treatment Operations. Both positions are deemed executive officers of the Company. (5) Mr. Eshleman was appointed to the position of COO of the Company effective January 23, 2025. Mr. Eshleman was originally hired by the Company on January 6, 2025, as Vice President of Operations. 84 Outstanding Equity Awards at Fiscal Year-End The following table sets forth unexercised options held by the NEOs as of the fiscal year-end. Outstanding Equity Awards as of December 31, 2025 Option Awards Name Number of Securities Underlying Unexercised Options (#) Exercisable Number of Securities Underlying Unexercised Options (#) (1) Unexercisable Equity Incentive Plan Awards: Number of Securities Underlying Unexercised Unearned Options (#) Option Exercise Price ($) Option Expiration Date Mark Duff 40,000 (2) 10,000 (2) 7.005 10/14/2027 28,000 (3) 42,000 (3) 3.950 1/19/2029 Ben Naccarato 20,000 (2) 5,000 (2) 7.005 10/14/2027 16,000 (3) 24,000 (3) 3.950 1/19/2029 Dr. Louis Centofanti 16,000 (2) 4,000 (2) 7.005 10/14/2027 12,000 (3) 18,000 (3) 3.950 1/19/2029 Richard Grondin 5,000 (2)(5) 5,000 (2) 7.005 10/14/2027 — (3) 18,000 (3)(6) 3.950 1/19/2029 Troy Eshleman — (4) 50,000 (4) 10.700 1/23/2031 (1) Pursuant to each of the employment agreements between the Company and, respectively, Mark Duff, Ben Naccarato, Dr. Louis Centofanti, and Richard Grondin, each dated April 20, 2023, and the employment agreement between the Company and Mr. Eshleman, dated April 17, 2025, in the event of a change in control, death of the executive officer, the executive officer terminates his employment for “good reason” or the executive officer is terminated by the Company without cause, each outstanding option and award shall immediately become exercisable in full (see “Employment Agreements” below for further discussion of the events pursuant to which accelerated exercise of the respective NEO’s outstanding options can arise). (2) Incentive stock option granted on October 14, 2021, under the Company’s 2017 Stock Option Plan. The option has a contractual term of six years and vests at 20% per year over a five-year period, commencing on the first anniversary of the grant date. (3) Incentive stock option granted on January 19, 2023, under the Company’s 2017 Stock Option Plan. The option has a contractual term of six years and vests at 20% per year over a five-year period, commencing on the first anniversary of the grant date. (4) Incentive stock option granted on January 23, 2025, under the Company’s 2017 Stock Option Plan. The option has a contractual term of six years and vests at 20% per year over a five-year period, commencing on the first anniversary of the grant date. (5) On January 20, 2026, Mr. Grondin exercised the vested portion of the ISO granted to him on October 14, 2021, for the purchase of 5,000 shares (Option Shares) of the Company’s Common Stock at $7.005 per share. As permitted by the 2017 Stock Option Plan, Mr. Grondin elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company’s Common Stock on January 20, 2026, (as determined in accordance with the 2017 Stock Option Plan) was $13.71 per share, the Company withheld 2,555 shares of Common Stock ($35,025 divided by $13.71) to pay the aggregate exercise price of the option and issued 2,445 shares to Mr. Grondin. (6) On January 20, 2026, Mr. Grondin exercised the vested portion of the ISO granted to him on January 19, 2023, for the purchase of 6,000 shares (Option Shares) of the Company’s Common Stock at $3.95 per share. As permitted by the 2017 Stock Option Plan, Mr. Grondin elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company’s Common Stock on January 20, 2026, (as determined in accordance with the 2017 Stock Option Plan) was $13.71 per share, the Company withheld 1,729 shares of Common Stock ($23,700 divided by $13.71) to pay the aggregate exercise price of the option and issued 4,271 shares to Mr. Grondin. 85 Option Exercises The table below reflects options exercised by our NEOs in 2025: Name Number of Shares Acquired on Exercise (#) Value Realized on Exercise ($) Mark Duff 17,577 (1) $ 185,750 (1) Ben Naccarato 10,534 (2) $ 111,450 (2) Richard Grondin 1,906 (3) $ 21,575 (3) 3,906 (4) $ 44,220 (4) (1) On January 8, 2025, Mr. Duff exercised 100% of his ISO granted to him on January 17, 2019, under the Company’s 2017 Stock Plan for the purchase of up to 25,000 shares (Option Shares) of the Company’s Common Stock at $3.15 per share. As permitted by the 2017 Stock Option Plan, Mr. Duff elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $78,750. Since the fair market value of the Company’s Common Stock on January 8, 2025, (as determined in accordance with the 2017 Stock Option Plan) was $10.58 per share, the Company withheld 7,443 shares of Common Stock ($78,750 divided by $10.58) to pay the aggregate exercise price for the Option Shares and issued 17,557 shares to Mr. Duff. Realized value on this exercise was determined based on the difference between the (a) exercise price ($3.15) per share of the Option Shares multiplied by the 25,000 Option Shares exercised, and (b) the market value ($10.58) on the date of exercise of the Option Shares times the 25,000 Option Shares exercised. (2) On January 8, 2025, Mr. Naccarato exercised 100% of his ISO granted to him on January 17, 2019, under the Company’s 2017 Stock Option Plan for the purchase of up to 15,000 shares (Option Shares) of the Company’s Common Stock at $3.15 per share. As permitted by the 2017 Stock Option Plan, Mr. Naccarato elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $47,250. Since the fair market value of the Company’s Common Stock on January 8, 2025, (as determined in accordance with the 2017 Stock Option Plan) was $10.58 per share, the Company withheld 4,466 shares of Common Stock ($47,250 divided by $10.58) to pay the aggregate exercise price for the Option Shares and issued 10,534 shares to Mr. Naccarato. Realized value on this exercise was determined based on the difference between the (a) exercise price ($3.15) per share of the Option Shares multiplied by the 15,000 Option Shares exercised, and (b) the market value ($10.58) on the date of exercise of the Option Shares times the 15,000 Option Shares exercised. (3) On July 14, 2025, Mr. Grondin exercised the vested portion of the ISO granted to him on October 14, 2021, for the purchase of 5,000 shares (Option Shares) of the Company’s Common Stock at $7.005 per share. As permitted by the 2017 Stock Option Plan, Mr. Grondin elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $35,025. Since the fair market value of the Company’s Common Stock on July 14, 2025, (as determined in accordance with the 2017 Stock Option Plan) was $11.32 per share, the Company withheld 3,094 shares of Common Stock ($35,025 divided by $11.32) to pay the aggregate exercise price of the option and issued 1,906 shares to Mr. Grondin. Realized value on this exercise was determined based on the difference between the (a) exercise price ($7.005) per share of the Option Shares multiplied by the 5,000 Option Shares exercised, and (b) the market value ($11.32) on the date of exercise of the Option Shares times the 5,000 Option Shares exercised. (4) On July 14, 2025, Mr. Grondin exercised the vested portion of the ISO granted to him on January 19, 2023, for the purchase of 6,000 shares (Option Shares) of the Company’s Common Stock at $3.95 per share. As permitted by the 2017 Stock Option Plan, Mr. Grondin elected to pay the exercise price of the Option Shares by having the Company withhold from the Option Shares a number of shares having a fair market value equal to the aggregate exercise price of $23,700. Since the fair market value of the Company’s Common Stock on July 14, 2025, (as determined in accordance with the 2017 Stock Option Plan) was $11.32 per share, the Company withheld 2,094 shares of Common Stock ($23,700 divided by $11.32) to pay the aggregate exercise price of the option and issued 3,906 shares to Mr. Grondin. Realized value on this exercise was determined based on the difference between the (a) exercise price ($3.95) per share of the Option Shares multiplied by the 6,000 Option Shares exercised, and (b) the market value ($11.32) on the date of exercise of the Option Shares times the 6,000 Option Shares exercised. 86 Employment Agreements Each of Mark Duff, President and CEO; Ben Naccarato, EVP and CFO; and Dr. Louis Centofanti, EVP of Strategic Initiatives, has an employment agreement with the Company dated April 20, 2023. On January 23, 2025, the Board appointed Mr. Richard Grondin to the position of EVP of Hanford and International Waste Operations. Prior to his appointment to such office, Mr. Grondin previously served as the Company’s EVP of Waste Treatment Operations and, in connection therewith, also had an employment agreement with the Company dated April 20, 2023. Mr. Grondin remains an executive officer of the Company upon his appointment to the position of EVP of Hanford and International Waste Operations and, accordingly, his employment agreement dated April 20, 2023, was amended solely to reflect his new position. Additionally, in connection with the appointment of Troy Eshleman to the position of COO on January 23, 2025, the Company and the COO entered into an employment agreement on April 17, 2025 (each such employment agreement is individually an “Employment Agreement” and, collectively, the “Employment Agreements”). Each of the Employment Agreements terminates April 20, 2026 (the “Initial Term”) unless earlier terminated by the Company or by the executive officer. At the end of the Initial Term, each Employment Agreement will automatically be extended for one additional year, unless at least six months prior to the expiration of the Initial Term, the Company or the executive officer provides written notice not to extend the terms of the Employment Agreement. On September 29, 2025, the Company’s Compensation Committee, on behalf of the Company and its Board, notified each of the executive officers that his current Employment Agreement as disclosed above will not be extended. The Compensation Committee will make recommendations to the Company’s Board as to proposed modifications to each of the Employment Agreements. It is the Company’s intention to offer new employment agreements to the executive officers to be effective April 21, 2026. Each of the Employment Agreements, which are substantially identical except for compensation and the commencement date of the Initial Term in the case of the COO’s Employment Agreement, provides for a specified annual base salary, which annual salary may be increased from time to time, but not reduced, as determined by the Compensation Committee. In addition, each of the NEOs is entitled to participate in the Company’s broad-based benefits plans and to certain performance compensation payable under separate Management Incentive Plans (“MIPs”) as approved by the Company’s Compensation Committee and Board. The Company’s Compensation Committee and the Board approved individual 2026 MIPs on January 22, 2026, (which was effective January 1, 2026, and applicable for the 2026 fiscal year) for each of the executive officers: Mark Duff, Ben Naccarato, Dr. Louis Centofanti, Richard Grondin and Troy Eshleman (see discussion of each of the 2026 MIPs below under “2026 MIPs”). Pursuant to the Employment Agreements, if the executive officer’s employment is terminated due to death, disability or for cause (as defined in the agreements), the Company will pay to the executive officer or to his estate an amount equal to the sum of any unpaid base salary and accrued unused vacation time through the date of termination and any benefits due to the executive officer under any employee benefit plan (the “Accrued Amounts”) plus any performance compensation payable pursuant to the executive officer’s MIP with respect to the fiscal year immediately preceding the date of termination. In the event that the executive officer’s employment is terminated due to death, the Company will also pay a lump-sum payment (the “Cash Medical Continuation Benefit”) equal to eighteen times the monthly premium that would be required to be paid, pursuant to the Consolidated Omnibus Budget Reconciliation Act of 1985, as amended (“COBRA”), to continue group health coverage for the executive officer’s eligible covered dependents in effect on the date of the executive officer’s termination of employment, based on the premium for the first month of COBRA coverage. Such cash payment will be taxable and will be made regardless of whether the executive officer’s eligible covered dependents elect COBRA continuation coverage. 87 If the executive officer terminates his employment for “good reason” (as defined in the agreements) or is terminated by the Company without cause (including any such termination for “good reason” or without cause within 24 months after a Change in Control (as defined in the agreements), the Company will pay the executive officer Accrued Amounts, (a) two years of full base salary, plus (b) (i) two times the performance compensation (under the executive officer’s MIP) earned with respect to the fiscal year immediately preceding the date of termination provided the performance compensation earned with respect to the fiscal year immediately preceding the date of termination has not yet been paid, or (ii) if performance compensation earned with respect to the fiscal year immediately preceding the date of termination has already been paid to the executive officer, the executive officer will be paid an additional year of the performance compensation earned with respect to the fiscal year immediately preceding the date of termination, and (c) the Cash Medical Continuation Benefit. If the executive officer terminates his employment for a reason other than for good reason, the Company will pay to the executive officer an amount equal to the Accrued Amounts plus any performance compensation payable pursuant to the MIP applicable to such executive officer. Additionally, in the event of a Change in Control (as defined in the agreements), all outstanding stock options to purchase the common stock held by the executive officer will immediately become exercisable in full commencing on the date of termination through the original term of the options. In the event of the death of an executive officer, all outstanding stock options to purchase common stock held by the executive officer will immediately become exercisable in full commencing on the date of death, with such options exercisable for the lesser of the original option term or twelve months from the date of the executive officer’s death. In the event an executive officer terminates his employment for “good reason” (as defined in the agreements) or is terminated by the Company without cause, all outstanding stock options to purchase common stock held by the officer will immediately become exercisable in full commencing on the date of termination, with such options exercisable for the lesser of the original option term or within 60 days from the date of the executive officer’s date of termination. Severance benefits payable with respect to a termination (other than Accrued Amounts) shall not be payable until the termination constitutes a “separation from service” (as defined under Treasury Regulation Section 1.409A-1(h)). Potential Payments Upon Termination or Change in Control The following table sets forth the potential (estimated) payments and benefits to which each executive officer would be entitled upon termination of employment by the executive officer for “good reason” or by the Company “without cause,” or following a Change in Control of the Company, as specified under each of their respective Employment Agreements with the Company, assuming each circumstance described below occurred on December 31, 2025, the last day of our most recent fiscal year. Such potential payments include any Accrued Amounts (accrued base salary earned for 2025 but paid in 2026, as well as accrued unused vacation/sick time and other vested benefits under the Company plans in which the executive officer participates). The executive officer is not entitled to payment of any benefits upon termination for cause or resignation without good reason other than the Accrued Amounts. 88 By Executive for Good Reason or by Name and Principal Position Company Without Change in Control Potential Payment/Benefit Cause of the Company Mark Duff President and CEO Base salary and Accrued Amounts $ 851,050 (1) $ 851,050 (1) Performance compensation $ — (2) $ — (2) Stock Options $ 884,050 (3) $ 884,050 (3) Cash Medical Benefit Continuation $ 37,620 (4) $ 37,620 (4) Ben Naccarato EVP and CFO Base salary and Accrued Amounts $ 728,584 (1) $ 728,584 (1) Performance compensation $ — (2) $ — (2) Stock Options $ 485,225 (3) $ 485,225 (3) Cash Medical Benefit Continuation $ 62,172 (4) $ 62,172 (4) Dr. Louis Centofanti EVP of Strategic Initiatives Base salary and Accrued Amounts $ 725,585 (1) $ 725,585 (1) Performance compensation $ — (2) $ — (2) Stock Options $ 370,900 (3) $ 370,900 (3) Cash Medical Benefit Continuation $ 21,258 (4) $ 21,258 (4) Richard Grondin EVP of Hanford and International Waste Operations Base salary and Accrued Amounts $ 733,316 (1) $ 733,316 (1) Performance compensation $ — (2) $ — (2) Stock Options $ 211,370 (3) $ 211,370 (3) Cash Medical Benefit Continuation $ 43,074 (4) $ 43,074 (4) Troy Eshleman COO Base salary and Accrued Amounts $ 653,131 (1) $ 653,131 (1) Performance compensation $ — (2) $ — (2) Stock Options $ 94,500 (3) $ 94,500 (3) Cash Medical Benefit Continuation $ — (4) $ — (4) (1) Represents two times the base salary of the executive officer at December 31, 2025, plus “Accrued Amounts.” (2) Represents two times the performance compensation earned for fiscal year 2025. None of the NEOs earned performance compensation for fiscal 2025 (see “2025 MIPs” below). (3) Benefit is calculated based on the difference between the exercise price of each option and the market value of the Company’s Common Stock per share (as reported on the Nasdaq) at December 31, 2025, times the number of options outstanding at December 31, 2025. Benefit excludes options which were out-of-the-money at December 31, 2025, of which there were none. (4) Represents a lump-sum payment equal to eighteen times the monthly premium that would be required to be paid to continue group health coverage for the executive officer’s eligible covered dependents in effect on the date of the executive officer’s termination of employment as defined in the employment agreement, 2025 Executive Compensation Components For the fiscal year ended December 31, 2025, the principal components of compensation for executive officers were: ● base salary; ● performance-based incentive compensation; ● long term incentive compensation; ● retirement and other benefits; and ● perquisites. Based on the amounts set forth in the Summary Compensation table, during 2025, salary accounted for approximately 77.4% of the total compensation of our NEOs, while equity option awards and other compensation accounted for approximately 22.6% of the total compensation of the NEOs. 89 Base Salary The NEOs, other officers, and other employees of the Company receive a base annual salary. Base salary ranges for executive officers are determined for each executive based on his or her position and responsibility by using market data and comparisons to similar companies within the business segments in which the Company operates. During its review of base salaries for executives, the Compensation Committee primarily considers: ● market data and comparisons to similar companies within the business segments in which the Company operates; ● internal review of the executive’s compensation, both individually and relative to other officers; and ● individual performance of the executive. Salary levels are typically considered annually as part of the performance review process as well as upon a promotion or other change in job responsibility. Merit-based salary increases for executives are based on the Compensation Committee’s assessment of the individual’s performance. The base salary for the executives are set forth in their respective employment agreements, which annual salary may be increased from time to time, but not reduced, as determined by the Compensation Committee. On January 23, 2025, the Board appointed Mr. Richard Grondin as the Company’s EVP of Hanford and International Waste Operations, at an annual salary of $315,267. Prior to his appointment to such office, Mr. Grondin previously served as the Company’s EVP of Waste Treatment Operations. Additionally, on January 23, 2025, the Board appointed Mr. Troy Eshleman as the Company’s COO, at an annual salary of $320,000. Mr. Troy Eshleman was originally hired by the Company on January 6, 2025 as Vice President of Operations. Performance-Based Incentive Compensation The Compensation Committee has the latitude to design cash and equity-based incentive compensation programs to promote high performance and achievement of our corporate objectives by directors and the NEOs, encourage the growth of stockholder value and enable employees to participate in our long-term growth and profitability. The Compensation Committee may grant stock options and/or performance bonuses, subject to approvals by the Board. In granting these awards, the Compensation Committee may establish any conditions or restrictions it deems appropriate. In addition, the CEO has discretionary authority to grant stock options to certain executives or officers, subject to the approval of the Compensation Committee and the Board. The exercise price for each stock option granted is at or above the market price of our Common Stock on the date of grant. Stock options may be awarded to newly hired or promoted executives by the Compensation Committee, subject to Board approval. Grants of stock options to eligible newly hired executive officers are generally made at the next regularly scheduled Compensation Committee meeting following the hire date. 2025 MIPs On January 23, 2025, the Compensation Committee and the Board (with Mr. Mark Duff and Dr. Louis Centofanti abstaining) approved individual MIPs for the calendar year 2025 for each of the NEOs. Each of the MIPs was effective January 1, 2025. The performance compensation payable under each MIP was based upon meeting certain of the Company’s separate target objectives during 2025 as described in each of the MIPs below, provided, however, no performance compensation was to be paid for attaining any of the Company’s separate target objectives unless a minimum of 75% of the EBITDA (earnings before interest, taxes, depreciation and amortization) target objective was achieved. The Compensation Committee believes performance compensation payable under each of the MIPs should be based on achievement of at least 75% of EBITDA, a non-U.S. GAAP (accounting principles generally accepted in the United States of America) financial measurement, as the Company believes that this target provides a better indicator of operating performance as it excludes certain non-cash items. EBITDA has certain limitations as it does not reflect all items of income or cash flows that affect the Company’s financial performance under U.S. GAAP. In formulating such targets, the Compensation Committee and the Board considered 2024 results, the Board-approved budget for 2025, economic conditions, forecasts for 2025 government spending, as well as the Compensation Committee’s expectation for performance that in its estimation would warrant payment of incentive cash compensation. 90 Performance compensation amounts under the 2025 MIPs are to be paid on or about 90 days after year-end, or sooner, based on finalization of our audited financial statements for 2025. No compensation was earned under any of the MIPs for the NEOs in 2025. The Compensation Committee retains the right to modify, change or terminate each MIP and may adjust the various target amounts described below, at any time and for any reason. The total to be paid to the NEOs under the MIPs may not exceed 50% of the Company’s pre-tax net income prior to the calculation of performance compensation. The following schedules reflect performance compensation payable under each of the MIPs, along with a description of the target objectives. CEO MIP : Annualized Base Pay: $ 417,155 Performance Incentive Compensation Target (at 100% of Plan): $ 208,578 Total Annual Target Compensation (at 100% of Plan): $ 625,733 Perma-Fix Environmental Services, Inc. 2025 Management Incentive Plan CEO MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (7) $ 10,429 $ 20,858 $ 35,756 $ 50,655 $ 80,451 EBITDA (2) 62,572 125,146 214,537 303,927 482,708 Health & Safety (5) (7) 15,643 31,287 31,287 31,287 31,287 Permit & License Violations (6) (7) 15,643 31,287 31,287 31,287 31,287 $ 104,287 $ 208,578 $ 312,867 $ 417,156 $ 625,733 CFO MIP : Annualized Base Pay: $ 332,811 Performance Incentive Compensation Target (at 100% of Plan): $ 166,406 Total Annual Target Compensation (at 100% of Plan): $ 499,217 91 Perma-Fix Environmental Services, Inc. 2025 Management Incentive Plan CFO MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (7) $ 8,320 $ 16,641 $ 27,338 $ 36,847 $ 43,979 EBITDA (2) 62,401 124,805 164,029 221,082 263,872 70,721 141,446 191,367 257,929 307,851 Performance Target Achieved 100% 100% 100% 100% 100% Regulatory Filing (3) (7) 24,960 24,960 24,960 24,960 24,960 $ 95,681 $ 166,406 $ 216,327 $ 282,889 $ 332,811 EVP of Strategic Initiatives MIP: Annualized Base Pay: $ 277,346 Performance Incentive Compensation Target (at 100% of Plan): $ 138,673 Total Annual Target Compensation (at 100% of Plan): $ 416,019 Perma-Fix Environmental Services, Inc. 2025 Management Incentive Plan EVP of Strategic Initiatives MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (7) $ 6,934 $ 13,866 $ 22,782 $ 30,706 $ 36,649 EBITDA (2) 52,001 104,006 136,692 184,237 219,896 58,935 117,872 159,474 214,943 256,545 Performance Target Achieved 100% 100% 100% 100% 100% PFAS Gen 2 (4) (7) 20,801 20,801 20,801 20,801 20,801 $ 79,736 $ 138,673 $ 180,275 $ 235,744 $ 277,346 EVP of Hanford and International Waste Operations MIP: Annualized Base Pay: $ 315,267 Performance Incentive Compensation Target (at 100% of Plan): $ 157,634 Total Annual Target Compensation (at 100% of Plan): $ 472,901 92 Perma-Fix Environmental Services, Inc. 2025 Management Incentive Plan EVP OF HANFORD AND INTERNATIONAL WASTE OPERATIONS MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (7) $ 7,882 $ 15,763 $ 22,519 $ 31,527 $ 38,282 EBITDA (2) 47,289 94,581 135,114 189,160 229,695 Health & Safety (5) (7) 11,823 23,645 23,645 23,645 23,645 Permit & License Violations (6) (7) 11,823 23,645 23,645 23,645 23,645 $ 78,817 $ 157,634 $ 204,923 $ 267,977 $ 315,267 Chief Operating Officer MIP: Annualized Base Pay: $ 320,000 Performance Incentive Compensation Target (at 100% of Plan): $ 160,000 Total Annual Target Compensation (at 100% of Plan): $ 480,000 Perma-Fix Environmental Services, Inc. 2025 Management Incentive Plan CHIEF OPERATING OFFICER MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (7) $ 8,000 $ 16,000 $ 22,857 $ 32,000 $ 38,857 EBITDA (2) 48,000 96,000 137,143 192,000 233,143 Health & Safety (5) (7) 12,000 24,000 24,000 24,000 24,000 Permit & License Violations (6) (7) 12,000 24,000 24,000 24,000 24,000 $ 80,000 $ 160,000 $ 208,000 $ 272,000 $ 320,000 (1) Revenue was defined as the total consolidated third-party top line revenue as publicly reported in the Company’s 2025 financial statements. The percentage achieved was determined by comparing the actual consolidated revenue for 2025 to the Board-approved revenue target for 2025. (2) EBITDA was defined as earnings before interest, taxes, depreciation, and amortization from continuing and discontinued operations. The percentage achieved was determined by comparing the actual EBITDA to the Board-approved EBITDA target for 2025. (3) Regulatory Filing Incentive Target was based on meeting all deadlines (including allowable extensions granted by the Securities and Exchange Commission (“SEC”)) for the Form 10-K, Form 10-Q and 8-Ks required by SEC. (4) PFAS (Per- and polyfluoroalkyl substances) Gen 2 Target was based on startup of the Company’s generation 2 reactor with the ability to generate revenue in treatment of PFAS waste. (5) The Health and Safety Incentive target was based upon the actual number of Worker’s Compensation Lost Time Accidents (“WCLTA”), as provided by the Company’s Worker’s Compensation carrier. For the EVP of Hanford and International Waste Operations, the Health and Safety Incentive target was determined based on the actual number of WCLTA at the Company’s Perma-Fix Northwest Richland, Inc. facility and international operations. The Corporate Controller submitted a report on a quarterly basis documenting and confirming the number of WCLTA, supported by the Worker’s Compensation Loss Report provided by the Company’s carrier or broker. Such claims were identified on the loss report as “indemnity claims.” The following number of WCLTA and corresponding performance target thresholds was established for the annual Incentive Compensation Plan calculation for 2025. 93 EVP of Hanford and International CEO and COO Waste Operations Work Comp. Performance Work Comp. Performance Claim Number Target Achieved Claim Number Target Achieved 3 75%-89% 2 75%-89% 2 90%-110% 1 90%-110% 1 111%-129% 1 111%-129% 1 130-150% 1 130-150% 1 >150% 1 >150% (6) Permits or License Violations incentive was earned/determined according to the scale set forth below: An “official notice of non-compliance” was defined as an official communication during 2025 from a local, state, federal, or foreign regulatory authority alleging one or more violations of an otherwise applicable Environmental, Health or Safety requirement or permit provision, which resulted in a facility’s implementation of corrective action(s) which included a material financial obligation, as determined by the Company’s Board of Directors in their sole discretion, to the Company. For the EVP of Hanford and International Waste Operations, the permit or license violations incentive was earned/determined based on results from the Company’s Perma-Fix Northwest Richland, Inc. facility and international operations. EVP of Hanford and International CEO and COO Waste Operations Work Comp. Performance Work Comp. Performance Claim Number Target Achieved Claim Number Target Achieved 3 75%-89% 2 75%-89% 2 90%-110% 1 90%-110% 1 111%-129% 1 111%-129% 1 130-150% 1 130-150% 1 >150% 1 >150% (7) No performance incentive compensation was payable for the target objective unless a minimum of 75% of the EBITDA target objective was achieved. 2026 MIPs On January 22, 2026, the Compensation Committee and the Board (with Mr. Mark Duff and Dr. Louis Centofanti abstaining) approved individual MIPs for the calendar year 2026 for each of the NEOs. Each of the MIPs is effective January 1, 2026. The performance compensation payable under each MIP is based upon meeting certain of the Company’s separate target objectives during 2026 as described in each of the MIPs below, provided, however, no performance compensation is to be paid for attaining any of the Company’s separate target objectives unless a minimum of 75% of the EBITDA target objective is achieved. In formulating such targets, the Compensation Committee and the Board considered 2025 results, the Board-approved budget for 2026, economic conditions, forecasts for 2026 government spending, as well as the Compensation Committee’s expectation for performance that in its estimation would warrant payment of incentive cash compensation. Performance compensation amounts under the 2026 MIPs, if earned, are to be paid on or about 90 days after year-end, or sooner, based on finalization of our audited financial statements for 2026. The Compensation Committee retains the right to modify, change or terminate each MIP and may adjust the various target amounts described below, at any time and for any reason. 94 The total to be paid to the NEOs under the MIPs may not exceed 50% of the Company’s pre-tax net income prior to the calculation of performance compensation. The following schedules reflect performance compensation payable under each of the MIPs, along with a description of the target objectives. CEO MIP : Annualized Base Pay: $ 429,670 Performance Incentive Compensation Target (at 100% of Plan): $ 214,835 Total Annual Target Compensation (at 100% of Plan): $ 644,505 Perma-Fix Environmental Services, Inc. 2026 Management Incentive Plan CEO MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (8) $ 10,742 $ 21,484 $ 36,829 $ 52,174 $ 82,866 EBITDA (2) 64,449 128,901 220,973 313,045 497,189 Health & Safety (6) (8) 16,113 32,225 32,225 32,225 32,225 Permit & License Violations (7) (8) 16,113 32,225 32,225 32,225 32,225 $ 107,417 $ 214,835 $ 322,252 $ 429,669 $ 644,505 CFO MIP : Annualized Base Pay: $ 342,795 Performance Incentive Compensation Target (at 100% of Plan): $ 171,398 Total Annual Target Compensation (at 100% of Plan): $ 514,193 Perma-Fix Environmental Services, Inc. 2026 Management Incentive Plan CFO MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (8) $ 8,570 $ 17,140 $ 28,158 $ 37,952 $ 45,298 EBITDA (2) 64,273 128,548 168,949 227,714 271,787 72,843 145,688 197,107 265,666 317,085 Performance Target Achieved 100% 100% 100% 100% 100% Regulatory Filing (3) (8) 25,710 25,710 25,710 25,710 25,710 $ 98,553 $ 171,398 $ 222,817 $ 291,376 $ 342,795 95 EVP of Strategic Initiatives MIP: Annualized Base Pay: $ 285,666 Performance Incentive Compensation Target (at 100% of Plan): $ 142,833 Total Annual Target Compensation (at 100% of Plan): $ 428,499 Perma-Fix Environmental Services, Inc. 2026 Management Incentive Plan EVP of Strategic Initiatives MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (8) $ 7,142 $ 14,283 $ 23,465 $ 31,627 $ 37,749 EBITDA (2) 53,561 107,126 140,793 189,764 226,493 60,703 121,409 164,258 221,391 264,242 Performance Target Achieved 100% 100% 100% 100% 100% Perma-FAS Destruction Efficiency (4) (8) 10,712 10,712 10,712 10,712 10,712 Performance Standards and Operating Instructions (5) (8) 10,712 10,712 10,712 10,712 10,712 $ 82,127 $ 142,833 $ 185,682 $ 242,815 $ 285,666 EVP of Hanford and International Waste Operations MIP: Annualized Base Pay: $ 324,725 Performance Incentive Compensation Target (at 100% of Plan): $ 162,363 Total Annual Target Compensation (at 100% of Plan): $ 487,088 Perma-Fix Environmental Services, Inc. 2026 Management Incentive Plan EVP OF HANFORD AND INTERNATIONAL WASTE OPERATIONS MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (8) $ 8,118 $ 16,236 $ 23,195 $ 32,473 $ 39,431 EBITDA (2) 48,708 97,419 139,168 194,835 236,586 Health & Safety (6) (8) 12,177 24,354 24,354 24,354 24,354 Permit & License Violations (7) (8) 12,177 24,354 24,354 24,354 24,354 $ 81,180 $ 162,363 $ 211,071 $ 276,016 $ 324,725 96 Chief Operating Officer MIP: Annualized Base Pay: $ 329,600 Performance Incentive Compensation Target (at 100% of Plan): $ 164,800 Total Annual Target Compensation (at 100% of Plan): $ 494,400 Perma-Fix Environmental Services, Inc. 2026 Management Incentive Plan CHIEF OPERATING OFFICER MIP MATRIX Target Objectives Performance Target Achieved 75%-89% 90%-110% 111%-129% 130%-150% >150% Revenue (1) (8) $ 8,240 $ 16,480 $ 23,543 $ 32,960 $ 40,023 EBITDA (2) 49,440 98,880 141,257 197,760 240,137 Health & Safety (6) (8) 12,360 24,720 24,720 24,720 24,720 Permit & License Violations (7) (8) 12,360 24,720 24,720 24,720 24,720 $ 82,400 $ 164,800 $ 214,240 $ 280,160 $ 329,600 (1) Revenue is defined as the total consolidated third-party top line revenue as publicly reported in the Company’s 2026 financial statements. The percentage achieved is determined by comparing the actual consolidated revenue for 2026 to the Board-approved revenue target for 2026. (2) EBITDA is defined as earnings before interest, taxes, depreciation, and amortization from continuing and discontinued operations. The percentage achieved is determined by comparing the actual EBITDA to the Board-approved EBITDA target for 2026. (3) Regulatory Filing Incentive Target is based on meeting all deadlines (including allowable extension granted by the Securities and Exchange Commission (“SEC”)) for the Form 10-K, Form 10-Q and 8-Ks required by the SEC. (4) Perma-FAS Destruction Efficiency Target is defined as achieving Perma-FAS overall destruction efficiency production costs per unit equal to or less than a Board-approved per gallon costs. (5) PFAS Reactor Standards and Instruction Target is defined as development of final performance standards and operating instructions for both Gen 1 and Gen 2 reactors. (6) The Health and Safety Incentive target is based upon the actual number of WCLTA, as provided by the Company’s Worker’s Compensation carrier. For the EVP of Hanford and International Waste Operations, the Health and Safety Incentive target is determined based on the actual number of WCLTA at the Company’s Perma-Fix Northwest Richland, Inc. facility and international operations. The Corporate Controller will submit a report on a quarterly basis documenting and confirming the number of WCLTA, supported by the Worker’s Compensation Loss Report provided by the Company’s carrier or broker. Such claims will be identified on the loss report as “indemnity claims.” The following number of WCLTA and corresponding performance target thresholds is established for the annual Incentive Compensation Plan calculation for 2026. EVP of Hanford and International CEO and COO Waste Operations Work Comp. Performance Work Comp. Performance Claim Number Target Achieved Claim Number Target Achieved 3 75%-89% 2 75%-89% 2 90%-110% 1 90%-110% 1 111%-129% 1 111%-129% 1 130-150% 1 130-150% 1 >150% 1 >150% 97 (7) Permits or License Violations incentive is earned/determined according to the scale set forth below: An “official notice of non-compliance” is defined as an official communication during 2026 from a local, state, federal, or foreign regulatory authority alleging one or more violations of an otherwise applicable Environmental, Health or Safety requirement or permit provision, which results in a facility’s implementation of corrective action(s) which includes a material financial obligation, as determined by the Company’s Board of Directors in their sole discretion, to the Company. For the EVP of Hanford and International Waste Operations, the permit or license violations incentive is earned/determined based on results from the Company’s Perma-Fix Northwest Richland, Inc. facility and international operations. EVP of Hanford and International CEO and COO Waste Operations Work Comp. Performance Work Comp. Performance Claim Number Target Achieved Claim Number Target Achieved 3 75%-89% 2 75%-89% 2 90%-110% 1 90%-110% 1 111%-129% 1 111%-129% 1 130-150% 1 130-150% 1 >150% 1 >150% (8) No performance incentive compensation will be payable for the target objective unless a minimum of 75% of the EBITDA target objective is achieved. Long-Term Incentive Compensation Employee Stock Option Plans The 2017 Stock Option Plan (“2017 Plan”) encourages participants to focus on long-term performance and provides an opportunity for executive officers and certain designated key employees to increase their stake in the Company. Stock options succeed by delivering value to executives only when the value of our stock increases. The 2017 Plan authorizes the grant of non-qualified stock options (“NQSOs”) and incentive stock options (“ISOs”) for the purchase of our Common Stock. The 2017 Plan was adopted to: ● enhance the link between the creation of stockholder value and long-term executive incentive compensation; ● provide an opportunity for increased equity ownership by executives; and ● maintain competitive levels of total compensation. Stock option award levels are determined based on market data, vary among participants based on their positions with the Company and are granted generally at the Compensation Committee’s regularly scheduled July or August meeting. Newly hired or promoted executive officers who are eligible to receive options are generally awarded such options at the next regularly scheduled Compensation Committee meeting following their hire or promotion date. Options are awarded with an exercise price equal to or not less than the closing price of the Company’s Common Stock on the date of the grant as reported on the Nasdaq. In certain limited circumstances, the Compensation Committee may grant options to an executive at an exercise price in excess of the closing price of the Company’s Common Stock on the grant date. The Company’s NEOs have outstanding options from the Company’s 2017 Plan (See “Item 11 – Executive Compensation – Outstanding Equity Awards at Fiscal Year-End - Outstanding Equity Awards as of December 31, 2025,” for outstanding options under the 2017 Plan for each of our NEOs). 98 On January 23, 2025, in connection with the Board’s appointment of Mr. Troy Eshleman to the position of COO, the Compensation Committee and the Board approved the grant of an ISO for the purchase of up to 50,000 shares of the Company’s Common Stock to Mr. Eshleman. The ISO has a term of six years, and vests 20% per year over a five-year period commencing on the first anniversary date of grant. The exercise price of the ISO is $10.70 per share, which is equal to the closing price of the Company’s Common Stock on the date of grant as quoted on Nasdaq. In cases of termination of an executive officer’s employment due to death, by the executive for “good reason,” by the Company without cause, and due to a “change of control,” all outstanding stock options to purchase Common Stock held by the executive officer will immediately become exercisable in full (see further discussion of the exercisability term of these options in each of these circumstances in “EXECUTIVE COMPENSATION – Employment Agreements”). Otherwise, vesting of option awards ceases upon termination of employment and exercise right of the vested option amount ceases upon three months from termination of employment except in the case of retirement (subject to a six-month limitation) and disability (subject to a one-year limitation). Accounting for Stock-Based Compensation We account for stock-based compensation in accordance with ASC 718, “Compensation – Stock Compensation.” ASC 718 establishes accounting standards for entity exchanges of equity instruments for goods or services. It also addresses transactions in which an entity incurs liabilities in exchange for goods or services that are based on the fair value of the entity’s equity instruments or that may be settled by the issuance of those equity instruments. ASC 718 requires all stock-based payments to employees, including grants of employee stock options, to be recognized in the income statement based on their fair values. The Company uses the Black-Scholes option-pricing model to determine the fair value of stock-based awards, which requires subjective assumptions. Assumptions used to estimate the fair value of stock options granted include the exercise price of the award, the expected term, the expected volatility of the Company’s stock over the option’s expected term, the risk-free interest rate over the option’s expected term, and the expected annual dividend yield. We recognize stock-based compensation expense using a straight-line amortization method over the requisite period, which is the vesting period of the stock option grant. Retirement and Other Benefits 401(k) Plan The Company adopted the Perma-Fix Environmental Services, Inc. 401(k) Plan (the “401(k) Plan”) in 1992, which is intended to comply with Section 401 of the Internal Revenue Code and the provisions of the Employee Retirement Income Security Act of 1974. All full-time employees who have attained the age of 18 are eligible to participate in the 401(k) Plan. Eligibility is immediate upon employment but enrollment is only allowed during four quarterly open periods of January 1, Apri1 1, July 1, and October 1. Participating employees may make annual pretax contributions to their accounts up to 100% of their compensation, up to a maximum amount as limited by law. At our discretion, we may make matching contributions based on the employee’s elective contributions. Company contributions vest over a period of five years. In 2025, the Company contributed approximately $593,000 in 401(k) matching funds, of which approximately $32,400 was for our NEOs (see the “Summary Compensation” table in this section for 401(k) matching fund contributions made for the NEOs for 2025). Perquisites and Other Personal Benefits The Company provides executive officers with limited perquisites and other personal benefits (health/disability/life insurance/auto allowance) that the Company and the Compensation Committee believe are reasonable and consistent with its overall compensation program to better enable the Company to attract and retain superior employees for key positions. The Compensation Committee periodically reviews the levels of perquisites and other personal benefits provided to executive officers. 99 Compensation of Directors Directors who are employees receive no additional compensation for serving on the Board or its committee(s). In 2025, the Company provided the following annual compensation to each non-employee director for service on the Board and the committee(s) for which he/she serves: ● a quarterly fee of $11,500; ● an additional quarterly fee of $8,750 to the Chairman of the Board; ● an additional quarterly fee of $6,250 to the Chairman of the Audit Committee; ● an additional quarterly fee of $3,125 to the Chairman of each of the Compensation Committee, the Governance and Nominating Committee, and the Strategic Committee. The Chairman of the Board was not eligible to receive a quarterly fee for serving as the Chairman of any the aforementioned committees; ● an additional $1,250 to each Audit Committee member (excluding the Chairman of the Audit Committee); ● an additional quarterly fee of $500 to each member of the Compensation Committee, the Governance and Nominating Committee, and the Strategic Committee. Such fee was payable only if the member did not also serve as the Chairman of any other standing committees or as the Chairman of the Board; and ● a fee of $1,000 for each in-person board meeting attended and a $500 fee for meeting attendance via conference call; Each director may elect to have either 65% or 100% of such fees payable in Common Stock under the 2003 Outside Directors Stock Plan (the “2003 Outside Directors Plan”), with the balance, if any, payable in cash. Each non-employee director was also granted an NQSO to purchase 10,000 shares of Common Stock upon reelection with vesting of 25% per year, beginning on the first anniversary date of the grant, with each option having a 10-year term. As an executive officer of the Company, each Dr. Louis Centofanti and Mark Duff, is not eligible to receive compensation for his respective service as a director of the Company (See “Executive Compensation,” - “Summary Compensation” table for each of Dr. Centofanti’s and Mark Duff’s annual salary and other compensation as an employee of the Company). The table below summarizes compensation expenses recognized by the Company for director options and stock awards (resulting from fees earned) for the year ended December 31, 2025. The terms of the 2003 Plan are further described below under “2003 Outside Directors Plan.” Director Compensation Name Fees Earned or Paid In Cash Stock Awards Option Awards Non-Equity Incentive Plan Compensation Nonqualified Deferred Compensation Earnings All Other Compensation Total ($) (1) ($) (2) ($) (4) ($) ($) ($) ($) Thomas P. Bostick — 67,334 86,100 (3) — — — 153,434 Kerry C. Duggan 18,725 46,359 86,100 (3) — — — 151,184 Joseph T. Grumski — 91,334 86,100 (3) — — — 177,434 Joe R. Reeder — 81,335 86,100 (3) — — — 167,435 Larry M. Shelton 31,675 78,438 86,100 (3) — — — 196,213 Zach P. Wamp 19,425 48,094 86,100 (3) — — — 153,619 Mark A. Zwecker 26,600 65,866 86,100 (3) — — — 178,566 (1) Under the 2003 Outside Directors Plan, each director elects to receive 65% or 100% of the director’s fees in shares of our Common Stock. The amounts set forth above represent the portion of the director’s fees paid in cash and exclude the value of the director’s fee elected to be paid in Common Stock under the 2003 Outside Directors Plan, which values are included under “Stock Awards.” (2) The number of shares of Common Stock comprising stock awards granted under the 2003 Outside Directors Plan is calculated based on 75% of the closing market value of the Common Stock as reported on the Nasdaq on the business day immediately preceding the date that the quarterly fee is due. Such shares are fully vested on the date of grant. The value of the stock award is based on the market value of our Common Stock at each quarter end times the number of shares issuable under the award. The amount shown is the fair value of the Common Stock on the date of the award. (3) Reflects options granted under the Company’s 2003 Outside Directors Plan resulting from re-election to the Board on July 24, 2025. Options are for a 10-year period with an exercise price of $12.23 per share and vest 25% per year, beginning on the first anniversary date of the grant. The value of the option award for each outside director is calculated based on the fair value of the option per share (approximately $8.61) on grant date times the number of options granted, which was 10,000 for each director, pursuant to ASC 718, “Compensation – Stock Compensation.”. 100 (4) The following table reflects the aggregate number of outstanding NQSOs held by the Company’s directors as of December 31, 2025. As an employee of the Company or its subsidiaries, neither Dr. Centofanti nor Mark Duff is eligible to participate in the 2003 Outside Directors Plan. Options reflected below for each of Dr. Centofanti and Mark Duff were granted from the 2017 Plan as discussed previously: Options Outstanding at Name December 31, 2025 Dr. Louis Centofanti 50,000 Thomas P. Bostick 56,000 Mark J. Duff 120,000 Kerry C. Duggan 56,000 Joseph T. Grumski 58,400 Joe R. Reeder 42,500 Larry M. Shelton 62,000 Zach P. Wamp 63,200 Mark A. Zwecker 62,000 Total 570,100 2003 Outside Directors Plan We believe that it is important for our directors to have a personal interest in our success and growth and for their interests to be aligned with those of our stockholders; therefore, under our 2003 Outside Directors Plan, each outside director is granted a 10-year NQSO to purchase up to 20,000 shares of Common Stock on the date such director is initially elected to the Board, and receives on each re-election date a NQSO to purchase up to another 10,000 shares of our Common Stock, with the exercise price being the fair market value of the Common Stock preceding the option grant date. Common Stock shares subject to option granted vest at 25% per year, beginning on the first anniversary date of the grant and no option shall be exercisable after the expiration of ten years from the date the option is granted. As of December 31, 2025, options to purchase 402,500 shares of Common Stock were outstanding under the 2003 Outside Directors Plan, of which 227,500 were vested. As a member of the Board, each director may elect to receive either 65% or 100% of his or her director’s fee in shares of our Common Stock. The number of shares received by each director is calculated based on 75% of the fair market value of the Common Stock determined on the business day immediately preceding the date that the quarterly fee is due. The balance of each director’s fee, if any, is payable in cash. In 2025, fees earned by our outside directors totaled approximately $575,000. In the event of a “change of control” (as defined in the 2003 Outside Directors Plan) or by reason of the director’s death or Disability (as defined), each outstanding stock option and stock award shall immediately become exercisable in full notwithstanding the vesting or exercise provisions contained in the stock option agreement. ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT AND RELATED STOCKHOLDER MATTERS Security Ownership of Certain Beneficial Owners The table below sets forth information as to the shares of Common Stock beneficially owned as of March 2, 2026, by each person known by us to be the beneficial owners of more than 5% of any class of our voting securities. Amount and Percent Title Nature of of Name of Beneficial Owner of Class Ownership Class (1) BlackRock, Inc. (2) Common 1,006,818 5.43 % The Vanguard Group (3) Common 935,942 5.05 % (1) The number of shares and the percentage of outstanding Common Stock shown as beneficially owned by a person are based upon 18,547,539 shares of Common Stock outstanding on March 2, 2026, and the number of shares of Common Stock which such person has the right to acquire beneficial ownership of within 60 days. Beneficial ownership by our stockholders has been determined in accordance with the rules promulgated under Section 13(d) of the Exchange Act. 101 (2) This information is based on the Schedule 13G of BlackRock, Inc., a parent holding Company or control person in accordance with Rule 13d-1(b) (1) (ii) (G), filed with the Commission on November 8, 2024, disclosing that at September 30, 2024, BlackRock, Inc. had sole voting power over 1,002,992 shares and shared voting power over 0 share and sole dispositive power over all shares shown above. The address of BlackRock, Inc. is 50 Hudson Yards, New York, NY 10001. (3) This information is based on the Schedule 13G of the Vanguard Group., an investment advisor, filed with the Commission on October 30, 2025, disclosing that at September 30, 2025, the Vanguard Group had sole voting power over 0 share and shared voting power over 105,905 shares and sole dispositive power over 824,295 shares and shared dispositive power over 111,647 shares. The address of the Vanguard Group is 100 Vanguard Blvd., Malvern, PA 19355. Additionally, as of March 2, 2026, Schelhammer Capital Bank AG, a banking institution regulated by the banking regulations of Austria, has represented to the Company that it holds of record as a nominee for, and as an agent of, certain accredited investors, 1,627,324 shares of our Common Stock. None of the Common Stock held by Schelhammer Capital Bank AG for the account of any single investor represents more than 4.9% of our Common Stock and, to the best knowledge of Schelhammer Capital Bank AG, as far as stocks held by such investors in accounts with Schelhammer Capital Bank AG, none of such investors act together as a group or otherwise act in concert for the purpose of voting on matters subject to the vote of our stockholders or for purpose of disposition or investment of such stock. Additionally, the investors for whom Schelhammer Capital Bank AG acts as nominee with respect to such shares maintain full voting and dispositive power over the Common Stock beneficially owned by such investors, and Schelhammer Capital Bank AG has neither voting nor investment power over such shares. Accordingly, Schelhammer Capital Bank AG believes that (i) it is not the beneficial owner, as such term is defined in Rule 13d-3 of the Exchange Act, of the shares of Common Stock registered in Schelhammer Capital Bank AG’s name because (a) Schelhammer Capital Bank AG holds the Common Stock as a nominee only, (b) Schelhammer Capital Bank AG has neither voting nor investment power over such shares, and (c) Schelhammer Capital Bank AG has not nominated or sought to nominate, and does not intend to nominate in the future, any person to serve as a member of our Board; and (ii) it is not required to file reports under Section 16(a) of the Exchange Act or to file either Schedule 13D or Schedule 13G in connection with the shares of our Common Stock registered in the name of Schelhammer Capital Bank AG. Notwithstanding the previous paragraph, if Schelhammer Capital Bank AG’s representations to us described above are incorrect or if the investors for whom Schelhammer Capital Bank AG acts as nominee are acting as a group, then Schelhammer Capital Bank AG or a group of such investors could be a beneficial owner of more than 5% of our voting securities. If Schelhammer Capital Bank AG was deemed the beneficial owner of such shares, the following table sets forth information as to the shares of voting securities that Schelhammer Capital Bank AG may be considered to beneficially own on March 2, 2026: Name of Record Owner Title Of Class Amount and Nature of Ownership Percent Of Class (*) Schelhammer Capital Bank AG Common 1,627,324 (+) 8.77 % (*) This calculation is based upon 18,547,539 shares of Common Stock outstanding on March 2, 2026, plus the number of shares of Common Stock which Schelhammer Capital Bank AG, as agent for certain accredited investors, has the right to acquire within 60 days, which is none. (+) This amount is the number of shares that Schelhammer Capital Bank AG has represented to us that it holds of record as nominee for, and as an agent of, certain accredited investors. As of March 2, 2026, the date of Schelhammer Capital Bank AG’s representations to us, Schelhammer Capital Bank AG has no warrants or options to acquire, as agent for certain investors, additional shares of our Common Stock. Although Schelhammer Capital Bank AG is the record holder of the shares of Common Stock described in this note, Schelhammer Capital Bank AG has advised us that it does not believe it is a beneficial owner of the Common Stock or that it is required to file reports under Section 16(a) or Section 13(d) of the Exchange Act. Schelhammer Capital Bank AG has advised us that it (a) holds the Common Stock as a nominee only and that it does not exercise voting or investment power over the Common Stock held in its name and that no one investor for which it holds our Common Stock holds more than 4.9% of our issued and outstanding Common Stock and (b) has not nominated, and has not sought to nominate, and does not intend to nominate in the future, any person to serve as a member of our Board. Accordingly, we do not believe that Schelhammer Capital Bank AG is our affiliate. Schelhammer Capital Bank AG’s address is Goldschmiedgasse 3, A-1010 Wien, Austria. 102 Security Ownership of Management The following table sets forth information as to the shares of voting securities beneficially owned as of March 2, 2026, by each of our directors and NEOs and by all of our directors and NEOs as a group. Beneficial ownership has been determined in accordance with the rules promulgated under Section 13(d) of the Exchange Act. A person is deemed to be a beneficial owner of any voting securities for which that person has the right to acquire beneficial ownership within 60 days. Amount and Nature Name of Beneficial Owner (2) of Beneficial Owner (1) Percent of Class (1) Thomas P. Bostick (3) 78,838 (3) * Kerry C. Duggan (4) 36,767 (4) * Dr. Louis F. Centofanti (5) 314,365 (5) 1.69 % Joseph T. Grumski (6) 97,428 (6) * Joe R. Reeder (7) 253,501 (7) 1.37 % Larry M. Shelton (8) 230,394 (8) 1.24 % Zack P. Wamp (9) 89,730 (9) * Mark A. Zwecker (10) 279,519 (10) 1.50 % Mark Duff (11) 216,556 (11) 1.16 % Richard Grondin (12) 41,308 (12) * Ben Naccarato (13) 92,811 (13) * Troy Eshleman (14) 11,350 (14) * Directors and Executive Officers as a Group (12 persons) 1,742,567 (15) 9.20 % *Indicates beneficial ownership of less than one percent (1%). (1) The number of shares and the percentage of Common Stock shown as beneficially owned by a person are based up 18,547,529 shares of Common Stock outstanding on March 2, 2026, and the number of shares of Common Stock which such person has the right to acquire beneficial ownership of within 60 days. (2) The business address of each person, for the purposes hereof, is c/o Perma-Fix Environmental Services, Inc., 8302 Dunwoody Place, Suite 250, Atlanta, Georgia 30350. (3) LTG (ret.) Bostick has sole and voting and investment power over all shares shown, which include: (i) 47,838 shares of Common Stock held of record by LTG (ret.) Bostick, and (ii) options to purchase 31,000 shares which are immediately exercisable. (4) Ms. Duggan has sole and voting and investment power over all shares shown, which include: (i) 5,767 shares of Common Stock held of record by Ms. Duggan, and (ii) options to purchase 31,000 shares which are immediately exercisable. (5) These shares include (i) 217,565 shares held of record by Dr. Centofanti, (ii) immediately exercisable options to purchase 34,000 shares, and (iii) 62,800 shares held by Dr. Centofanti’s wife. Dr. Centofanti has sole voting and investment power over all such shares, except for the shares held by Dr. Centofanti’s wife, over which Dr. Centofanti shares voting and investment power. (6) Mr. Grumski has sole and voting and investment power over all shares shown, which include: (i) 64,028 shares of Common Stock held of record by Mr. Grumski, and (ii) options to purchase 33,400 shares which are immediately exercisable. 103 (7) Mr. Reeder has sole voting and investment power over all shares shown, which include: (i) 236,001 shares of Common Stock held of record, and (ii) options to purchase 17,500 shares which are immediately exercisable. (8) Mr. Shelton has sole voting and investment power over all shares shown, which include: (i) 193,394 shares of Common Stock held of record by Mr. Shelton, and (ii) options to purchase 37,000 shares which are immediately exercisable. (9) Mr. Wamp has sole voting and investment power over all shares shown, which include: (i) 51,530 shares of Common Stock held of record by Mr. Wamp, and (ii) options to purchase 38,200 shares which are immediately exercisable. (10) Mr. Zwecker has sole voting and investment power over all shares shown, which include: (i) 242,519 shares of Common Stock held of record by Mr. Zwecker, and (ii) options to purchase 37,000 shares which are immediately exercisable. (11) Mr. Duff has sole voting and investment power over all shares shown, which include: (i) 134,556 shares of Common Stock held of record by Mr. Duff, and (ii) immediately exercisable options to purchase 82,000 shares. (12) Mr. Grondin has sole voting and investment power over all shares reflected in the table which are 41,308 shares of Common Stock held of record by Mr. Grondin. (13) Mr. Naccarato has sole voting and investment power over all shares shown, which include: (i) 48,811 shares of Common Stock held of record by Mr. Naccarato, and (ii) immediately exercisable options to purchase 44,000 shares. (14) Mr. Eshleman has sole voting and investment power overall all shares shown, which include: 1,350 shares of Common Stock held of record by Mr. Eshleman, and (ii) immediately exercisable options to purchase 10,000 shares. (15) Amount includes options to purchase 395,100 shares which are immediately exercisable. Equity Compensation Plans The following table sets forth information as of December 31, 2025, with respect to our equity compensation plans. Equity Compensation Plan Plan Category Number of securities to be issued upon exercise of outstanding options warrants and rights Weighted average exercise price of outstanding options, warrants and rights Number of securities remaining available for future issuance under equity compensation plans (excluding securities reflected in column (a) (a) (b) (c) Equity compensation plans approved by stockholders 982,000 $ 7.04 134,971 (1) Equity compensation plans not approved by stockholders — — — Total 982,000 $ 7.04 134,971 (1) Includes (i) 83,971 shares available for grant under the 2003 Outside Directors Stock Plan and (ii) 51,000 shares available for issuance under the 2017 Stock Option Plan. On November 13, 2025, the Board approved an amendment to the Company’s 2017 Stock Option Plan to increase the number of shares authorized under the 2017 Plan by 600,000 shares, which is subject to the Company’s stockholders either at a special meeting of the Company’s stockholders or at the 2026 Annual Meeting of Stockholders, provided any such approval must be obtained within 12 months of the Board’s approval of the 600,000 shares. The amount noted in the column (c) does not include the 600,000 shares. 104 ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS, AND DIRECTOR INDEPENDENCE We describe below transactions to which we were a party during our last two fiscal years or to which we currently propose to be a party in the future, and in which: ● the amounts involved exceeded or will exceed the lesser of $120,000 or one percent of the average of our total assets at year-end for the last two completed fiscal years; and ● any of our directors, executive officers or beneficial owners of more than 5% of any class of our voting securities, or any member of the immediate family of the foregoing persons, had or will have a direct or indirect material interest. Audit Committee Review Our Audit Committee Charter provides for the review by the Audit Committee of any related party transactions, other than transactions involving an employment relationship with the Company, which are reviewed by the Compensation Committee. Although we do not have written policies for the review of related party transactions, the Audit Committee reviews transactions between the Company and its directors, executive officers, holders of more than 5% of any class of the Company’s voting securities, and their respective immediate family members. In reviewing a proposed transaction, the Audit Committee takes into account, among other factors it deems appropriate: (1) the extent of the related person’s interest in the transaction; (2) whether the transaction is on terms generally available to an unaffiliated third-party under the same or similar circumstances; (3) the cost and benefit to the Company; (4) the impact or potential impact on a director’s independence in the event the related party is a director, an immediate family member of a director or an entity in which a director is a partner, stockholder or executive officer; (5) the availability of other sources for comparable products or services; (6) the terms of the transaction; and (7) the risks to the Company. In addition, as applicable, the Audit Committee considers Section 144 of the Delaware General Corporation Law (“DGCL”) and the Company’s Code of Ethics. The provisions of Section 144 of the DGCL apply to transactions between the Company and any of its officers or directors, or any organization in which any such individual has a financial interest or serves as a director or officer (individually, a “Section 144 Related Party,” and, collectively, “Section 144 Related Parties”). Section 144 provides that a transaction between a corporation and any Section 144 Related Party will not be void or voidable solely because such transaction involves the corporation and the Section 144 Related Party, or solely because the Section 144 Related Party is present at or participates or votes in the meeting of the board or committee which authorizes the transaction, if the transaction (a) is approved in good faith after full disclosure of the material facts of the transaction by a majority vote of (i) the disinterested directors, or (ii) the stockholders, and (b) is fair as to the corporation as of the time it is authorized, approved, or ratified by the board, a committee or the stockholders. 105 Our Code of Ethics, which applies to our Board, all our employees (including our named executive officers or “NEOs”) and our senior financial officers, provides that such individuals must exhibit and promote honest and ethical conduct in connection with the performance of his or her duties for and on behalf of the Company, including the ethical handling of actual or apparent conflicts of interest involving such individual and the Company, by, among other considerations: ● not entering into a transaction that would result in a conflict of interest with what is in the best interest of the Company and that is reasonably likely to result in material personal gain to any such individuals or their affiliates; and ● not having a personal financial interest in any of the Company’s suppliers, customers or competitors that could cause divided loyalty as a result of having the ability to influence the Company’s decisions with that particular supplier or customer or actions to be taken by the Company that could materially benefit a competitor. Related party transactions are reviewed by the Audit Committee prior to the consummation of the transaction. With respect to a related party transaction arising between Audit Committee meetings, the CFO may present it to the Audit Committee Chairperson, who will review and may approve the related party transaction subject to ratification by the Audit Committee at the next scheduled meeting. Our Audit Committee shall approve only those transactions that, in light of known circumstances, are not inconsistent with the Company’s best interests. Related Party Transactions David Centofanti David Centofanti serves as our Vice President of Information Systems. For such position, he received annual compensation of $200,000 and $195,000 for the years 2025 and 2024, respectively. David Centofanti is the son of Dr. Louis F. Centofanti, our EVP of Strategic Initiatives, who is also a Board member. Board Independence Our Common Stock is listed on the Nasdaq Capital Market. Rule 5605 of the Nasdaq Marketplace Rules requires a majority of a listed company’s board of directors to be comprised of independent directors. In addition, the Nasdaq Marketplace Rules require that, subject to specified exceptions, each member of a listed company’s audit, compensation and nominating and corporate governance committees be independent under applicable provisions of the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Audit committee members must also satisfy independence criteria set forth in Rule 10A-3 under the Exchange Act, and compensation committee members must also satisfy the independence criteria set forth in Rule 10C-1 under the Exchange Act. Under Nasdaq Rule 5605(a)(2), a director will only qualify as an “independent director” if, in the opinion of our Board, that person does not have a relationship that would interfere with the exercise of independent judgment in carrying out the responsibilities of a director. In order to be considered independent for purposes of Rule 10A-3 under the Exchange Act, a member of an audit committee of a listed company may not, other than in his or her capacity as a member of the audit committee, the board of directors, or any other board committee, accept, directly or indirectly, any consulting, advisory, or other compensatory fee from the listed company or any of its subsidiaries or otherwise be an affiliated person of the listed company or any of its subsidiaries. In order to be considered independent for purposes of Rule 10C-1, the board must consider, for each member of a compensation committee of a listed company, all factors specifically relevant to determining whether a director has a relationship to such company which is material to that director’s ability to be independent from management in connection with the duties of a compensation committee member, including, but not limited to: the source of compensation of the director, including any consulting advisory or other compensatory fee paid by such company to the director; and whether the director is affiliated with the company or any of its subsidiaries or affiliates. Our Board annually reviews the composition of our Board of Directors and its committees and the independence of each director. Based upon information requested from and provided by each director concerning his/her background, employment and affiliations, including family relationships, our Board of Directors has determined that Ms. Kerry C. Duggan and each of Messrs. Thomas P. Bostick, Joseph T. Grumski, Joe R. Reeder, Larry M. Shelton, Zach P. Wamp and Mark A. Zwecker is an “independent director” as defined under the Nasdaq Marketplace Rules. Our Board of Directors has also determined that each member of our Audit Committee, consisting of Mark A. Zwecker (Chairperson), Joseph T. Grumski, and Larry M. Shelton, and each member of our Compensation and Stock Option Committee, consisting of Joseph T. Grumski (Chairperson), Zach P. Wamp, and Mark A. Zwecker, satisfy the independence standards for such committees established by the Commission and the Nasdaq Marketplace Rules, as applicable. In making such determination, our Board of Directors considered the relationships that each such non-employee director has with our Company and all other facts and circumstances our Board of Directors deemed relevant in determining independence, including the beneficial ownership of our capital stock by each non-employee director. 106 Our Board of Directors has determined that neither Dr. Louis Centofanti nor Mark J. Duff is deemed to be an “independent director” because of their employment as a senior executive officers of the Company. ITEM 14. PRINCIPAL ACCOUNTANT FEES AND SERVICES The following table reflects the aggregate fees for the audit and other services provided by Grant Thornton LLP, the Company’s independent registered public accounting firm, for fiscal years 2025 and 2024: Fee Type 2025 2024 Audit Fees (1) $ 644,000 $ 824,000 Tax Fees (2) 105,000 111,000 Total $ 749,000 $ 935,000 (1) Audit fees consist of audit work performed in connection with the annual financial statements, the reviews of unaudited quarterly financial statements, and work generally only the independent registered accounting firm can reasonably provide, such as consents and review of regulatory documents filed with the Securities and Exchange Commission (2) Fees for income tax planning, filing, and consulting. Engagement of the Independent Auditor To ensure that our independent registered public accounting firm is engaged only to provide audit and non-audit services that are compatible with maintaining its independence, the Audit Committee has a policy that requires the Committee to review and approve in advance all services to be provided by the Company’s independent accounting firm before the firm is engaged to provide those services. The Audit Committee considers non-audit services and fees when assessing auditor independence and determined that tax return preparation and other tax compliance services is compatible with maintaining our accounting firm’s independence. All services under the headings Audit Fees and Tax Fees were approved by the Audit Committee pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X of the Exchange Act. The Audit Committee’s pre-approval policy provides as follows: ● The Audit Committee will review and pre-approve on an annual basis all audits, audit-related, tax and other services, along with acceptable cost levels, to be performed by the independent accounting firm and any member of the independent accounting firm’s alliance network of firms and may revise the pre-approved services during the period based on later determinations. Pre-approved services typically include audits, quarterly reviews, regulatory filing requirements, consultation on new accounting and disclosure standards, employee benefit plan audits, reviews and reporting on management’s internal controls and specified tax matters. ● Any proposed service that is not pre-approved on the annual basis requires a specific pre-approval by the Audit Committee, including cost level approval. ● The Audit Committee may delegate pre-approval authority to one or more of the Audit Committee members. The delegated member must report to the Audit Committee, at the next Audit Committee meeting, any pre-approval decisions made. 107 PART IV ITEM 15. EXHIBITS AND FINANCIAL STATEMENT SCHEDULE The following documents are filed as a part of this report: (a)(1) Consolidated Financial Statements See Item 8 for the Index to Consolidated Financial Statements. (a)(2) Financial Statement Schedule Schedules are not required, are not applicable or the information is set forth in the consolidated financial statements or notes thereto. (a)(3) Exhibits The Exhibits listed in the Exhibit Index are filed or incorporated by reference as a part of this report. 108 SIGNATURES Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Perma-Fix Environmental Services, Inc. By /s/ Mark Duff Date March 24, 2026 Mark Duff Chief Executive Officer, President and Principal Executive Officer By /s/ Ben Naccarato Date March 24, 2026 Ben Naccarato Chief Financial Officer and Principal Financial Officer Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the registrant and in capacities and on the dates indicated. By /s/ Thomas P. Bostick Date March 24, 2026 Thomas P. Bostick, Director By /s/Dr. Louis F. Centofanti Date March 24, 2026 Dr. Louis F. Centofanti, Director By /s/Mark J. Duff Date March 24, 2026 Mark J. Duff, Director By /s/ Kerry C. Duggan Date March 24, 2026 Kerry C. Duggan, Director By /s/Joseph T. Grumski Date March 24, 2026 Joseph T. Grumski, Director By /s/ Joe R. Reeder Date March 24, 2026 Joe R. Reeder, Director By /s/ Larry M. Shelton Date March 24, 2026 Larry M. Shelton, Chairman of the Board By /s/ Zach P. Wamp Date March 24, 2026 Zach P. Wamp, Director By /s/ Mark A. Zwecker Date March 24, 2026 Mark A. Zwecker, Director 109 EXHIBIT INDEX Exhibit No. Description 3(i) Restated Certificate of Incorporation, as amended, of Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 3(i) to the Company’s Form 10-Q for Quarter ended March 31, 2021 filed on May 6, 2021. 3(ii) Second Amended and Restated Bylaws, as amended effective November 13, 2025, of Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 3(ii) to the Company’s 8-K filed on November 19, 2025. 4.1 Revised Second Amended and Restated Revolving Credit, Term Loan and Security Agreement referenced as Annex A in the Fifth Amendment, as incorporated by reference from Exhibit 4.2 to the Company’s Form 8-K filed on August 29, 2022. 4.2 Tenth Amendment to Second Amended and Restated Revolving Credit, Term Loan and Security Agreement dated March 11, 2025, between Perma-Fix Environmental Services, Inc. and PNC Bank, National Association, as incorporated by reference from Exhibit 4.7 to the Company’s Form 10-K for the year ended December 31, 2024, filed on March 13, 2025. 10.1 2003 Outside Directors’ Stock Plan of the Company, as incorporated by reference from Exhibit 10.1 to the Company’s 2019 Form 10-K filed on March 20, 2020. 10.2 First Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit 10.2 to the Company’s 2019 Form 10-K filed on March 20, 2020. 10.3 Second Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit 10.3 to the Company’s 2023 Form 10-K, filed on March 13, 2024. 10.4 Third Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit 10.4 to the Company’s 2023 Form 10-K, filed on March 13, 2024. 10.5 Fourth Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit 10.5 to the Company’s 2023 Form 10-K, filed on March 13, 2024. 10.6 Fifth Amendment to 2003 Outside Directors Stock Plan, as incorporated by reference from Exhibit A to the Company’s Proxy Statement for its 2021 Annual Meeting of Stockholders filed on June 10, 2021. 10.7 2017 Stock Option Plan, as incorporated by reference from Exhibit 10.7 to the Company’s 2023 Form 10-K, filed on March 13, 2024. 10.8 First Amendment to 2017 Stock Option Plan, as incorporated by reference from Appendix “A” to the Company’s Proxy Statement for its 2020 Annual Meeting of Stockholders filed on June 12, 2020. 10.9 Second Amendment to 2017 Stock Option Plan, as incorporated by reference from Appendix “A” to the Company’s Proxy Statement for it 2023 Annual Meeting of Stockholders filed on June 8, 2023. 10.10 Employment Agreement dated April 20, 2023, between Mark Duff, Chief Executive Officer, and Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 99.1 to the Company’s Form 8-K filed on April 26, 2023. 10.11 Employment Agreement dated April 20, 2023, between Ben Naccarato, Chief Financial Officer, and Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 99.2 to the Company’s Form 8-K filed on April 26, 2023. 10.12 Employment Agreement dated April 20, 2023, between Dr. Louis Centofanti, EVP of Strategic Initiatives, and Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 99.3 to the Company’s Form 8-K filed on April 26, 2023. 10.13 Employment Agreement dated April 20, 2023, between Richard Grondin, EVP of Waste Treatment Operations and Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 99.5 to the Company’s Form 8-K filed on April 26, 2023. 10.14 Memorandum amending Employment Agreement dated April 20, 2023, for EVP of Waste Treatment Operations, as incorporated by reference from Exhibit 99.7 to the Company’s Form 8-K filed January 29, 2025. 110 10.15 Employment Agreement dated April 17, 2025, between Troy Eshleman, Chief Operating Officer, and Perma-Fix Environmental Services, Inc., as incorporated by reference from Exhibit 99.1 to the Company’s Form 8-K filed on April 21, 2025. 10.16 2026 Incentive Compensation Plan for Chief Executive Officer, effective January 1, 2026, as incorporated by reference from Exhibit 10.1 to the Company’s Form 8-K filed on January 28, 2026. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.17 2026 Incentive Compensation Plan for Chief Financial Officer, effective January 1, 2026, as incorporated by reference from Exhibit 10.2 to the Company’s Form 8-K filed on January 28, 2026. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.18 2026 Incentive Compensation Plan for EVP of Strategic Initiatives, effective January 1, 2026, as incorporated by reference from Exhibit 10.3 to the Company’s Form 8-K filed on January 28, 2026. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.19 2026 Incentive Compensation Plan for EVP of Hanford and International Waste Operations, effective January 1, 2026, as incorporated by reference from Exhibit 10.4 to the Company’s Form 8-K filed on January 28, 2026. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LLIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.20 2026 Incentive Compensation Plan for Chief Operating Officer, effective January 1, 2026, as incorporated by reference from Exhibit 10.5 to the Company’s Form 8-K filed on January 28, 2026. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LLIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.21 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and Chief Executive Officer, dated October 14, 2021, as incorporated by reference from Exhibit 99.1 to the Company’s Form 8-K/A filed on October 20, 2021. 10.22 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and Chief Financial Officer, dated October 14, 2021, as incorporated by reference from Exhibit 99.2 to the Company’s Form 8-K/A filed on October 20, 2021. 10.23 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and EVP of Strategic Initiatives, dated October 14, 2021, as incorporated by reference from Exhibit 99.3 to the Company’s Form 8-K/A filed on October 20, 2021. 10.24 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and EVP of Waste Treatment Operations, dated October 14, 2021, as incorporated by reference from Exhibit 99.4 to the Company’s Form 8-K/A filed on October 20, 2021. 10.25 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and Chief Executive Officer, dated January 19, 2023, as incorporated by reference from Exhibit 99.6 to the Company’s Form 8-K filed on January 23, 2023. 10.26 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and Chief Financial Officer, dated January 19, 2023, as incorporated by reference from Exhibit 99.7 to the Company’s Form 8-K filed on January 23, 2023. 10.27 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and EVP of Strategic Initiatives, dated January 19, 2023, as incorporated by reference from Exhibit 99.8 to the Company’s Form 8-K filed on January 23, 2023. 10.28 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and EVP of Waste Treatment Operations, dated January 19, 2023, as incorporated by reference from Exhibit 99.10 to the Company’s Form 8-K filed on January 23, 2023. 10.29 Incentive Stock Option Agreement between Perma-Fix Environmental Services, Inc. and Chief Operating Officer, dated January 23, 2025, as incorporated by reference from Exhibit 99.6 to the Company’s Form 8-K filed on January 29, 2025. 111 10.30 Mixed Direct & Framework Contract for Services (Number -945711-IPR-2023), issued by European Commission to Perma-Fix Environmental Services, Inc. and Campoverde Srl, dated December 18, 2023, as incorporated by reference from Exhibit 10.35 to the Company’s 2023 Form 10-K, filed on March 13, 2024. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND WOULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IF PUBLICLY DISCLOSED. 10.31 Form of Placement Agents’ Warrants, as incorporated by reference from Exhibit 10.3 to the Company’s Form 8-K filed on May 24, 2024. 10.32 Form of Representative’s Warrants in connection with Underwriting Agreement, dated as of December 18, 2024, as incorporated by reference to exhibit 10.31 to the Company’s 2024 Form 10-K, filed on March 13, 2025. 10.33 Collective Bargaining Agreement between Perma-Fix Northwest Richland, Inc. and United Association of Plumbers and Steamfitters Local Union 598, Effective October 1, 2025, as incorporated by reference from Exhibit 10.1 to the Company’s Form 10-Q for the Quarter ended September 30, 2025, filed on November 10, 2025. CERTAIN INFORMATION WITHIN THIS EXHIBIT HAS BEEN EXCLUDED BECAUSE IT IS NOT MATERIAL AND COULD LIKELY CAUSE COMPETITIVE HARM TO THE COMPANY IS PUBLICLY DISCLOSED. 19 Insider Trading Policy and Procedures (Stock Trading, Report & Blackout Policy. 21.1 List of Subsidiaries 23.1 Consent of Grant Thornton, LLP 31.1 Certification by Mark Duff, Chief Executive Officer and Principal Executive Officer of the Company pursuant to Rule 13a-14(a) and 15d-14(a). 31.2 Certification by Ben Naccarato, Chief Financial Officer and Principal Financial Officer of the Company pursuant to Rule 13a-14(a) and 15d-14(a). 32.1 Certification by Mark Duff, Chief Executive Officer and Principal Executive Officer of the Company furnished pursuant to 18 U.S.C. Section 1350. 32.2 Certification by Ben Naccarato, Chief Financial Officer and Principal Financial Officer of the Company furnished pursuant to 18 U.S.C. Section 1350. 97 Perma-Fix Clawback Policy. 101.INS Inline XBRL Instance Document* 101.SCH Inline XBRL Taxonomy Extension Schema Document* 101.CAL Inline XBRL Taxonomy Extension Calculation Linkbase Document* 101.DEF Inline XBRL Taxonomy Extension Definition Linkbase Document* 101.LAB Inline XBRL Taxonomy Extension Labels Linkbase Document* 101.PRE Inline XBRL Taxonomy Extension Presentation Linkbase Document* 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) *Pursuant to Rule 406T of Regulation S-T, the Interactive Data File in Exhibit 101 hereto are deemed not filed or part of a registration statement or prospectus for purposes of Section 11 or 12 of the Securities Act of 1933, as amended, are deemed not filed for purpose of Section 18 of the Securities Exchange Act of 1934, as amended, and otherwise are not subject to liability under those sections. 112