55 unchanged sentences
Restated Articles of Organization of the Registrant
−Removed: Articles of Amendment to Restated Articles of Organization, as filed with the Secretary of State of Massachusetts on May 18, 2001
−Removed: Articles of Amendment to Restated Articles of Organization, as filed with the Secretary of State of Massachusetts on May 16, 2002
Second Amended and Restated By-Laws of the Registrant
+Added: Amendments to Second Amended and Restated By-Laws of the Registrant
Specimen certificate representing the Common Stock
3 unchanged sentences
Form of Global Note (included with Exhibit 4.3)
+Added: Indenture, dated February 4, 2026, by and among the Registrant, the guarantors listed therein and U.S.
+Added: Bank Trust Company, National Association, as trustee
+Added: Form of Global Note (included with Exhibit 4.5)
Credit Agreement, dated as of August 17, 2022, by and among the Registrant, the lenders and letter of credit issuers party thereto and JPMorgan Chase Bank, N.A., as administrative agent and collateral agent
2 unchanged sentences
Third Amendment to Credit Agreement, dated as of February 13, 2024, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and each lender and letter of credit issuer party thereto
−Removed: Fourth Amendment to Credit Agreement, dated as of July 23, 2024, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and each lender and letter of credit issuer party thereto
−Removed: Fifth Amendment to Credit Agreement, dated as of January 24, 2025, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and each lender and letter of credit issuer party thereto
+Added: Fourth Amendment to Credit Agreement, dated as of July 23, 2024, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and each lender thereto
+Added: Fifth Amendment to Credit Agreement, dated as of January 24, 2025, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A., as administrative agent, and each lender party thereto
+Added: Sixth Amendment to Credit Agreement, dated as of February 4, 2026, by and among the Registrant, as parent borrower, the other loan parties party thereto, JPMorgan Chase Bank, N.A.
+Added: Morgan SE, as administrative agent, JPMorgan Chase Bank, N.A., as collateral agent, and each lender and letter of credit issuer party thereto
2022 Stock Incentive Plan
Form of Restricted Stock Unit Agreement for Non-Employee Directors under the 2022 Stock Incentive Plan for 2025-2026
−Removed: Form of Restricted Stock Unit Agreement for Non-Employee Directors under the 2022 Stock Incentive Plan for 2025
Form of Restricted Stock Unit Agreement for Employees under the 2022 Stock Incentive Plan for 2023
−Removed: Form of Restricted Stock Unit Agreement for Employees under the 2022 Stock Incentive Plan for 2023
Form of Restricted Stock Unit Agreement for Employees under the 2022 Stock Incentive Plan for 2024-2026 (Standard)
11 unchanged sentences
Lee and the Registrant
−Removed: Employment Agreement, effective August 1, 2016, between Seth Bagshaw and the Registrant
−Removed: Amendment, dated October 29, 2018, to Employment Agreement, effective August 1, 2016, by and between Seth Bagshaw and the Registrant
Employment Agreement, effective August 1, 2016, between Kathleen Burke and the Registrant, as amended on October 29, 2018
29 unchanged sentences
and (v) the Notes to Consolidated Financial Statements.
−Removed: The following materials from MKS Instruments, Inc.’s Annual Report on Form 10-K for the year ended December 31, 2024, are formatted in XBRL (Extensible Business Reporting Language):
−Removed: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations and Comprehensive (Loss) Income, (iii) the Consolidated Statements of Stockholders’ Equity, (iv) the Consolidated Statements of Cash Flows, and (v) Notes to Consolidated Financial Statements.
−Removed: (1) Incorporated by reference to the Registration Statement on Form S-4 (File No.
−Removed: 333-49738), filed with the Securities and Exchange Commission on November 13, 2000.
−Removed: (2) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2001 (File No.
−Removed: 000-23621), filed with the Securities and Exchange Commission on August 14, 2001.
−Removed: (3) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2002 (File No.
−Removed: 000-23621), filed with the Securities and Exchange Commission on August 13, 2002.
+Added: The following materials from MKS Inc.’s Annual Report on Form 10-K for the year ended December 31, 2025, are formatted in XBRL (Extensible Business Reporting Language):
+Added: (i) the Consolidated Balance Sheets, (ii) the Consolidated Statements of Operations and Comprehensive Income (Loss), (iii) the Consolidated Statements of Stockholders’ Equity, (iv) the Consolidated Statements of Cash Flows, and (v) Notes to Consolidated Financial Statements.
(1) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
+Added: 000-23621), filed with the Securities and Exchange Commission on May 15, 2025.
+Added: (2) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
000-23621), filed with the Securities and Exchange Commission on December 3, 2024.
+Added: (3) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2025 (File No.
+Added: 000-23621), filed with the Securities and Exchange Commission on August 7, 2025.
(4) Incorporated by reference to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2019 (File No.
3 unchanged sentences
(6) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
+Added: 000-23621), filed with the Securities and Exchange Commission on February 5, 2026.
+Added: (7) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
000-23621), filed with the Securities and Exchange Commission on August 17, 2022.
11 unchanged sentences
333-264817), filed with the Securities and Exchange Commission on May 10, 2022.
−Removed: (14) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
−Removed: 000-23621), filed with the Securities and Exchange Commission on May 11, 2022.
(14) Incorporated by reference to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2024 (File No.
+Added: 000-23621), filed with the Securities and Exchange Commission on February 25, 2025.
+Added: (15) Incorporated by reference to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2022 (File No.
000-23621), filed with the Securities and Exchange Commission on March 14, 2023.
13 unchanged sentences
000-23621), filed with the Securities and Exchange Commission on August 7, 2019.
−Removed: (24) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2019 (File No.
−Removed: 000-23621), filed with the Securities and Exchange Commission on August 7, 2019.
(24) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
000-23621), filed with the Securities and Exchange Commission on October 29, 2021.
+Added: (25) Incorporated by reference to the Registrant’s Current Report on Form 8-K (File No.
+Added: 000-23621), filed with the Securities and Exchange Commission on May 8, 2024.
+Added: (26) Incorporated by reference to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 (File No.000-23621), filed with the Securities and Exchange Commission on February 23, 2021.
(27) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended June 30, 2024 (File No.
000-23621), filed with the Securities and Exchange Commission on August 8, 2024.
−Removed: (27) Incorporated by reference to the Registrant’s Annual Report on Form 10-K for the year ended December 31, 2020 (File No.000-23621), filed with the Securities and Exchange Commission on February 23, 2021.
(28) Incorporated by reference to the Registrant’s Quarterly Report on Form 10-Q for the quarter ended September 30, 2024 (File No.
5 unchanged sentences
Not applicable.
−Removed: MKS Instruments, Inc.
SCHEDULE II - VALUATION AND QUALIFYING ACCOUNTS
3 unchanged sentences
Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this annual report on Form 10-K for the fiscal year ended December 31, 2025 to be signed on its behalf by the undersigned, thereunto duly authorized on the 24th day of February 2026.
−Removed: MKS INSTRUMENTS, INC.
/s/ John T.C.
10 unchanged sentences
/s/ Ramakumar Mayampurath
−Removed: Executive Vice President, Chief Financial Officer and Treasurer
+Added: Executive Vice President and Chief Financial Officer
(Principal Financial Officer)
17 unchanged sentences
February 24, 2026
−Removed: /s/ Michelle M.
−Removed: February 25, 2025
Compared sentence by sentence after normalising whitespace, quotation marks, case and digits, so re-formatting and restated figures do not read as changed language. Wording changes appear as one removal and one addition. The current filing and the prior one are authoritative.