What changed in this filing

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Item 1. Business

2026-02-20 compared with 2025-02-21 · 93 added, 87 removed, 330 unchanged (35% of the section changed)

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AdvanSix Inc.

is a diversified chemistry company playing a critical role in global supply chains, innovating and delivering essential products for our customers in a wide variety of end markets and applications that touch people’s lives, such as building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives and electronics.

Our reliable and sustainable supply of quality products emerges from the integrated value chain of our five U.S.-based manufacturing facilities.

AdvanSix strives to deliver best-in-class customer experiences and differentiated products in the industries of nylon solutions, plant nutrients and chemical intermediates, guided by our core values of Safety, Integrity, Accountability and Respect.

is an integrated chemistry company that produces essential materials for diverse end markets.

Our value chain of our five U.S.-based manufacturing facilities plays a critical role in global supply chains and enables us to innovate and deliver essential products for our customers across building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives, electronics and other end markets.

Guided by our core values of Safety, Integrity, Accountability and Respect, AdvanSix strives to deliver best-in-class customer experiences and differentiated products in the industries of nylon solutions, plant nutrients and chemical intermediates.

Our key product lines are as follows:

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Nylon 6 is a polymer resin which is a synthetic material used by our customers to produce fibers, filaments, engineered plastics and films that, in turn, are used in such end-products as carpets, automotive and electric components, sports apparel, food packaging and other industrial applications.

◦ Caprolactam – Caprolactam is the key monomer or building block used in the production of Nylon 6 resin.

We internally polymerize caprolactam into Aegis® Nylon 6 Resins, and we also market and sell the caprolactam that is not consumed internally to customers who use it to manufacture polymer resins to produce fibers, compounds and other nylon products.

◦ Caprolactam – Caprolactam is the key monomer used in the production of Nylon 6 resin.

We internally polymerize caprolactam into Aegis® Nylon 6 Resin, and we also market and sell the caprolactam that is not consumed internally to customers who use it to manufacture polymer resins to produce fibers, compounds and other nylon products.

Our Hopewell manufacturing facility is one of the world’s largest single-site producers of caprolactam as of December 31, 2025.

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Most significant is acetone which is used by our customers in the production of solvents, paints, coatings, adhesives, resins and herbicides.

Other intermediate chemicals that we manufacture, market and sell include phenol, alpha-methylstyrene ("AMS"), cyclohexanone, oximes, cyclohexanol, and alkyl and specialty amines.

Other intermediate chemicals that we manufacture, market and sell include phenol, alpha-methylstyrene ("AMS"), cyclohexanone, oximes, cyclohexanol, and alkyl-amines and specialty amines.

Additional end-products for intermediates include automotive components, and water treatment and pharmaceutical intermediates.

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* The Company transferred certain products between its Chemical Intermediates product line and its Plant Nutrients product line to align more closely with its current sales structure.

Historical information has been reclassified to reflect these changes for all periods presented in the Consolidated Financial Statements.

* In 2024, the Company transferred certain products between its Chemical Intermediates product line and its Plant Nutrients product line to align more closely with its current sales structure.

Historical information was reclassified to reflect these changes for all periods presented in the Consolidated Financial Statements.

Total revenue amounts were not impacted for either period.

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The majority of the phenol we manufacture is further processed at our Hopewell facility through an integrated series of unit operations, which also consume natural gas and sulfur, to primarily produce caprolactam and ammonium sulfate.

In 2024, approximately 59% of the caprolactam we produced at our facility in Hopewell, Virginia was shipped to our facility in Chesterfield, Virginia where it was polymerized into Aegis® Nylon 6 resins.

In 2025, approximately 53% of the caprolactam we produced at our facility in Hopewell, Virginia was shipped to our facility in Chesterfield, Virginia where it was polymerized into Aegis® Nylon 6 resin.

Manufacturing for our U.S.

Amines portfolio occurs at our two facilities located in Bucks, Alabama and Portsmouth, Virginia.

The below chart shows the end-markets for the Company's products:

The below chart shows the Company's integrated value chain:

Our integrated manufacturing process, our scale and the quantity and range of our products make us one of the most reliable and efficient manufacturers in our industry.

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Our logistics infrastructure enables a reliable intra-plant supply chain and consistent and timely delivery to our customers.

In addition, we strive to understand the product applications and end markets into which our products are sold, which helps us upgrade the quality, chemical properties and packaging of our products in ways which enable us to attract price premiums and greater demand.

In addition, we strive to understand the product applications and end markets into which our products are sold, which helps us upgrade the quality, chemical properties and packaging of our products to enable us to attract price premiums and greater demand.

AdvanSix serves approximately 375 customers annually, primarily in the United States, with global capabilities, spanning a wide variety of industries.

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Our scale provides operating and purchasing leverage and the opportunity to achieve stronger business performance than our competitors in several ways.

Most fundamentally, it enables us

to spread fixed and overhead costs across more pounds of production, thereby enabling us to produce caprolactam at a lower per pound cost than our competitors.

Most fundamentally, it enables us to spread fixed and overhead costs across more pounds of production, thereby enabling us to produce caprolactam at a lower per pound cost than our competitors.

Third, the location of our manufacturing operations in the United States affords us access to low-cost natural gas, which is a key raw material needed to manufacture the ammonia used in the production of caprolactam and ammonium sulfate as well as the source of energy for our manufacturing operations.

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We have also diversified and optimized our ammonium sulfate-based offerings to include a spray-grade adjuvant to support crop protection, as well as other specialty fertilizers and products for industrial use.

Sales of ammonium sulfate in 2024 were $458 million and represented 30% of our total sales.

Sales of plant nutrients' products in 2025 were $564 million and represented 37% of our total sales.

We are among the most significant suppliers of acetone to a variety of end markets in North America.

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The diversity of our sales portfolio helps to mitigate, to some extent, the cyclicality in our end markets.

Currently, we not only have leading positions across these diverse product lines but are also aligned to several favorable macro trends that are supporting growth across the portfolio including urbanization and aging infrastructure, digital transformation, global food production and resource scarcity, and a shift to green and performance chemicals.

We believe we are aligned to several favorable macro trends that are supporting growth across the portfolio including urbanization and aging infrastructure, digital transformation, global food production and resource scarcity, and a shift to green and performance chemicals.

In addition, our U.S.

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Technical Know-How, Customer Intimacy and Application Development Capabilities.

Intimate knowledge of our customers and end market applications, combined with our technical know-how, enables us to develop differentiated, higher quality products that are often valued higher by customers compared to commodity products.

Intimate knowledge of our customers and end market applications, combined with our technical know-how, enables us to develop differentiated, higher quality products that are

often valued higher by customers compared to commodity products.

Our technology talent consists of scientists and engineers with degrees in polymer and chemical synthesis, catalysis and chemical engineering, who work on driving unique offerings and developing new products across our diverse portfolio.

Our agronomists provide the latest scientific information on the importance of sulfur nutrition for crops and how to optimize the benefits of ammonium sulfate fertilizer to our global customers through a variety of channels including webinars, technical training sessions for retailers and direct grower meetings.

Our agronomist provides the latest scientific information on the importance of sulfur nutrition for crops and how to optimize the benefits of ammonium sulfate fertilizer to our global customers through a variety of channels including webinars, technical training sessions for retailers and direct grower meetings.

We also have a strategic focus around placing our various chemistry platforms into high-value applications.

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We believe that our dividend, which has grown since its initiation in 2021, serves as a dependable return of cash to our shareholders and fits very well within this framework supported by annual operating cash flow.

The timing, declaration, amount and payment of dividends to stockholders, if any, will be within the sole discretion of our Board of Directors (the "Board").

The timing, declaration, amount and payment of dividends to stockholders, if any, will be within the sole discretion of our Board of Directors ("Board").

All further capital allocation is discretionary where we fund growth and cost saving programs at robust returns, inorganic opportunities and share repurchases.

Our high-return growth and cost savings capital project pipeline target improvement in production rate, cost, quality and yield.

As an example, we are accelerating profitable growth through our multi-year SUSTAIN (Sustainable U.S.

Sulfate To Accelerate Increased Nutrition) program's planned expansion in granular ammonium sulfate production.

As an example, we are accelerating profitable growth through our multi-year SUSTAIN program's planned expansion in granular ammonium sulfate production.

We continue to pursue a highly-selective acquisition and alliance strategy to supplement our organic sales by broadening our customer base, developing our technology and product portfolios, and enhancing our cash flow profile and margin stability.

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and extruded into film for food and industrial packaging applications.

During 2024, approximately seven million metric tons of Nylon 6 resin were produced and consumed globally, with China and the rest of Asia containing approximately 67% of total global Nylon 6 production capacity and Western Europe and North America combined for approximately 14%.

Overall utilization of global production capacity was approximately 58%.

While global Nylon 6 production and utilization data reflect aggregate conditions across all regions, market dynamics and value chains have been operating more regionally in recent years.

During 2025, approximately 7.7 million metric tons of Nylon 6 resin were produced and consumed globally.

Utilization of Nylon 6 production capacity was approximately 56% in 2025, influenced by supply and demand fundamentals and operating rates in China and the rest of Asia, which represents nearly 80% of total Nylon 6 capacity.

In contrast, utilization rates in 2025 for caprolactam, the key building block for Nylon 6, were approximately 74% globally and over 80% in the United States reflecting more balanced regional supply and demand conditions.

Caprolactam utilization was also above 80% in China, which was comparatively higher than operating rates observed in Europe and the rest of Asia (55%-65% range).

Market growth typically tracks global GDP growth over the long-term but varies by end-use.

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We believe that Nylon 6 end market growth will continue to generally track global GDP over the long-term.

Carpet is the largest end-use for Nylon 6 in North America and has seen stable to declining demand growth for a number of

years reflecting shifts in consumer preferences to hard flooring versus soft and the previous substitution to lower-cost polyester.

Carpet is the largest end-use for Nylon 6 in North America and has seen stable to declining demand growth for a number of years reflecting shifts in consumer preferences to hard flooring versus soft and the previous substitution to lower-cost polyester.

The housing sector had seen an improving trend in recent years, however, residential construction markets have slowed through 2025 reflecting higher interest rates.

While Nylon 6 has a stronger presence in commercial carpet applications, including hospitality and office, where the material is preferred for its durability and performance characteristics, growth in both residential and commercial markets has been subdued.

A lower interest rate environment, in time, is expected to favorably impact building and construction, and we anticipate seeing a more meaningful impact translate across the fiber and filament chain in 2025.

While Nylon 6 has a stronger presence in commercial carpet applications, including hospitality, institutional and offices, where the material is preferred for its durability and performance characteristics, growth in both residential and commercial markets has been subdued.

A lower interest rate environment, in time, is expected to favorably impact building and construction, however, we expect continued weak demand through 2026.

Applications such as engineered plastics and packaging have potential to grow at faster rates given certain macrotrends.

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Despite long supply and demand fundamentals, estimated operating rates out of China remain at multi-year highs resulting in continued nylon exports to other regions, namely southeast Asia.

In North America, where we primarily participate, demand has been stable albeit on a lower base, with continued softness in building and construction offset by resilience in packaging and engineering plastics applications.

In North America, where we primarily participate, demand has been weak, with continued softness in building and construction, food packaging and engineering plastics applications used largely in the automotive industry.

Plant Nutrients.

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Nitrogen fertilizer pricing declined through 2023 amid lower energy costs and increases in global supply availability, but remained favorable relative to historical levels.

Pricing and spreads strengthened in 2024, which we believe is reflective of an increasingly recognized sulfur value proposition and observed growth in demand.

Pricing and spreads strengthened in 2024 and margins remained favorable in 2025 despite rising raw material inputs, which we believe is reflective of an increasingly recognized sulfur value proposition and observed growth in demand.

Our ammonium sulfate product is positioned with the added value proposition of sulfur nutrition to increase yields of key crops.

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The primary products are acetone, phenol, AMS, cyclohexanone and a range of alkyl and specialty amines.

Acetone and phenol represent approximately 58% and 10%, respectively, of our chemical intermediates sales.

Acetone global demand totals approximately eight million metric tons with the U.S.

Acetone and phenol represent

approximately 59% and 8%, respectively, of our chemical intermediates sales.

Acetone global demand totals approximately 7.6 million metric tons with the U.S.

representing approximately 13% of the global market.

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Industry-realized acetone prices over refinery grade propylene costs generally remain healthy and continued balanced to tight global supply and demand as lower global phenol operating rates continue to persist.

Looking forward, a lower interest rate environment in 2025 would likely support phenol demand in building and construction applications for both renovation and new builds.

Looking forward, further reductions in interest rates would likely support phenol demand in building and construction applications for both renovation and new builds.

Demand across the rest of the Chemical Intermediates portfolio is mixed overall though these products do represent platforms serving high-value applications in support of longer-term growth and profitability.

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For Nylon Solutions, we compete with integrated manufacturers such as BASF Corporation, UBE Corporation, DOMO Chemicals GmbH, Envalior, Highsun Group Holdings Ltd., and Sinopec Limited.

For Plant Nutrients, we compete with manufacturers such as Pasadena Commodities International

and Nutrien Ltd.

For Plant Nutrients, like Nylon, we compete with caprolactam/ammonium sulfate co-product manufacturers and direct ammonium sulfate producers such as Pasadena Commodities International and Nutrien Ltd.

For Chemical Intermediates, we compete with stand-alone phenol and acetone producers, such as INEOS Phenol and Altivia, and, with respect to our amines product line, our key alkyl amines U.S.-based competitor is Eastman Chemical Company.

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In 2025, 2024 and 2023, Nylon sales were 20%, 23% and 23% of our total sales, respectively.

We produce caprolactam, the key monomer or building block used in the production of Nylon 6 resin, at our Hopewell plant using phenol produced at our Frankford plant and sulfur and natural gas obtained from third-party suppliers.

We produce caprolactam, the key monomer used in the production of Nylon 6 resin, at our Hopewell plant using phenol produced at our Frankford plant and sulfur and natural gas obtained from third-party suppliers.

In 2025, caprolactam generated $271 million of sales.

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Our co-product competitors typically produce approximately two pounds or less of ammonium sulfate for each pound of caprolactam.

We currently target converting approximately 70% of the ammonium sulfate we produce into higher-value granular form and anticipate ongoing increases as we implement our SUSTAIN (Sustainable U.S.

We are targeting converting approximately 75% of the ammonium sulfate we produce into higher-value granular form by year end 2026 in connection with our SUSTAIN (Sustainable U.S.

Sulfate to Accelerate Increased Nutrition) program.

We also manufacture sulfuric acid, ammonia and carbon dioxide as part of our integrated operations at Hopewell and occasionally sell any excess material not consumed internally to customers externally.

We also manufacture and sell ammonia, sulfuric acid and carbon dioxide as part of our integrated operations at Hopewell.

We sell ammonium sulfate under the brand name Sulf-N®, and in 2025, our Plant Nutrients products generated $564 million of sales.

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The majority of the phenol we produce is used in production of caprolactam and other chemical intermediates at Hopewell.

Any remaining phenol is sold to customers for use in their product applications such as phenolic resins, alkyl phenols and Bisphenol A used for epoxy resins and polycarbonate.

Any remaining

phenol is sold to customers for use in their product applications such as phenolic resins, alkyl phenols and Bisphenol A used for epoxy resins and polycarbonate.

All our acetone is sold to customers for use in products such as methyl methacrylate, polycarbonate, epoxy resins, ketones and solvents used widely in automotive and construction, as well as agrochemicals.

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Through our U.S.

Amines sites, we also produce and sell alkyl and specialty amines which are used in agrochemical intermediates, water treatment and pharmaceutical applications.

Amines sites, we also produce and sell alkyl-amines and specialty amines which are used in agrochemical intermediates, water treatment and pharmaceutical applications.

Raw Materials

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Global supply and demand can significantly impact the price of our key raw materials, and historically prices have been cyclical.

We mitigate our exposure to commodity price risk primarily through the use of medium- and

long-term, formula-based price contracts with our suppliers and formula-based price agreements with customers which structurally pass through increases or decreases in raw material costs.

Prices for our key raw materials are typically on a monthly settlement basis for benzene, propylene and natural gas, or on a quarterly settlement basis for sulfur.

We mitigate our exposure to commodity price risk primarily through the use of medium- and long-term, formula-based price contracts with our suppliers and formula-based price agreements with customers which structurally pass through increases or decreases in raw material costs.

While formula or index-based pricing agreements are more common for benzene and propylene across our Nylon Solutions and Chemical Intermediates portfolio, a portion of our natural gas and sulfur exposure is also structurally passed through in certain customer agreements.

Sales in our Plant Nutrients business line are priced on a freely negotiated basis.

Sales, Marketing and Distribution

We have a sales force with global reach, long-standing customer relationships and deep expertise with our products, product applications and end markets.

We predominantly sell directly to our customers, primarily under contracts but also through spot transactions under purchase orders and through distributors.

In Nylon and Chemical Intermediates we predominantly sell directly to our customers, primarily under contracts but also through spot transactions under purchase orders and through distributors.

In Plant Nutrients, the majority of sales, while to long standing customers, are freely-negotiated transactions under purchase orders.

Our products are supported by our global logistics capability that we employ to ensure reliable and timely delivery to our customers while maximizing distribution resources and efficiency.

AdvanSix serves around 400 customers annually, primarily in the United States, with global capabilities, spanning a wide variety of industries.

AdvanSix serves approximately 375 customers annually, primarily in the United States, with global capabilities, spanning a wide variety of industries.

In 2025, the Company's 10 largest customers accounted for approximately 40% of total sales.

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We sell caprolactam and Nylon 6 resin to Shaw under a long-term agreement.

Sales to Shaw were 10% of our total sales for the year ended December 31, 2024, and 11% for the years ended December 31, 2023 and 2022.

Sales to Shaw were 10% of our total sales for the years ended December 31, 2025 and 2024, and 11% for the year ended December 31, 2023.

We typically sell to our other customers under master services agreements, with primarily one-year terms, or by purchase orders.

We have historically experienced low customer turnover.

We produce ammonium sulfate fertilizer continuously throughout the year as part of our manufacturing process, but quarterly sales fluctuate reflecting both geographical and product sales mix considerations based on the timing and length of the growing seasons in North and South America.

North American ammonium sulfate demand and pricing, particularly for our higher-value granular product, are typically strongest during second quarter fertilizer application and then typically decline seasonally with new season fill in the third quarter.

Ammonium sulfate industry prices in the U.S.

corn belt have declined approximately 10% from the second quarter to the third quarter, on average, since 2016.

Due to the ammonium sulfate fertilizer sales cycle, we occasionally build up higher inventory balances because our production is continuous and not tied to seasonal demand for fertilizers.

Our ammonium sulfate fertilizer product line experiences quarterly sales seasonality reflecting both geographical and product sales mix considerations based on the timing and length of the growing seasons in North and South America.

The North American fertilizer season typically runs from July, when the value chain begins restocking fertilizer, through June of the following year, when most application for the year’s planting is completed.

The new season fill begins in the third quarter and proceeds sequentially into the following spring, which is the peak period for crop fertilizer application.

As a result of this pattern, North American ammonium sulfate demand and pricing, particularly for our higher-value granular product, are typically strongest in the first half of the year through application for the spring crop and then decline in the second half of the year.

Ammonium sulfate industry prices in the corn belt have declined approximately 12% from the second quarter to the third quarter, on average, since 2016.

Due to the ammonium

sulfate fertilizer sales cycle, we occasionally build higher inventory balances because our production is continuous throughout the year and not tied to seasonal demand for fertilizers.

Sales of most of our other products have generally been subject to minimal, or no, seasonality.

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We sell our Nylon 6 resin under the Aegis® brand name and our ammonium sulfate fertilizer under the Sulf-N® brand name.

Chemical intermediates are sold under the brand names of Nadone®, Naxol® and EZ-Blox®.

We also benefit from technology covered by trade secrets, including know-how and other proprietary information relating to many of our products, processes and technologies.

We do not consider any individual patent, trademark or licensing or distribution rights related to a specific process or product to be of material importance in relation to our overall business.

In our judgment, our intellectual property rights are adequate for the conduct of our business.

We intend to continue taking steps as necessary to protect our intellectual property, including when appropriate, filing patent applications for inventions that are deemed important to our business.

We conduct R&D at technology centers with researchers at our manufacturing sites in Frankford, Pennsylvania and Chesterfield, Virginia.

Certain of our chemical intermediates are sold under the brand names of Nadone®, Naxol® and EZ-Blox®.

We also benefit from technology protected by trade secrets, know-hows and other proprietary measures particularly on aspects pertaining to product formulations, processes and technologies.

At the present time, we do not consider any individual patent, trademark or licensing or distribution rights related to a specific process or product to be of material importance in relation to our overall business.

In our judgment, our intellectual property rights are adequate for the conduct of our business and for sustained competitive advantages.

We intend to continue taking steps as necessary to protect our intellectual property, including when appropriate, filing patent applications for inventions that are deemed important to our business, defending our patent rights, and enforcing our exclusivity positions worldwide.

We conduct R&D at our technology center with researchers at our manufacturing site in Chesterfield, Virginia, although certain of our manufacturing technology-specific R&D activities are conducted on site where manufacturing takes place.

Regulation and Environmental Matters

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the Clean Air Act and the Clean Water Act, for protection of air and water resources;

the Toxic Substance Control Act (“TSCA”), for regulation of chemicals in commerce and reporting of potential known adverse effects.

the Toxic Substance Control Act, for regulation of chemicals in commerce and reporting of potential known adverse effects.

There are also numerous other federal, state, local and foreign laws and regulations governing materials transport and packaging, under which we may be designated as a potentially responsible party liable for cleanup costs associated with current operating sites and various hazardous waste sites.

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We have expended funds to comply with environmental laws and regulations and expect to continue to do so.

Our Frankford and Hopewell facilities are regulated facilities under the Maritime Transportation Security Act of 2002 (“MTSA”) due to the nature of our operations and the proximity of the facilities to adjacent waterways.

Our Frankford and Hopewell facilities are regulated facilities under the Maritime Transportation Security Act of 2002 due to the nature of our operations and the proximity of the facilities to adjacent waterways.

As a result, we are required to comply with numerous regulations administered by the Department of Homeland Security, including the development and implementation of compliant security procedures and protocols.

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We strive to represent the communities in which we operate, celebrate our differences, inspire belonging, and are tenacious in our pursuit of bringing out the best in people both individually and collectively.

Our Code of Conduct outlines our commitment to provide employees a workplace that is free from discrimination or harassment (specifically related to gender, race, disability, ethnicity, nationality, religion and sexual orientation) or personal behavior not conducive to a productive and inclusive work climate.

Our Code of Conduct outlines our commitment to provide employees a workplace that is free from discrimination or harassment (specifically related to gender, race,

disability, ethnicity, nationality, religion and sexual orientation) or personal behavior not conducive to a productive and inclusive work climate.

We believe it is important that each employee feels a sense of belonging and is valued as part of the organizational culture we are cultivating, and we feel it is important that each employee sees diverse representation across our AdvanSix team.

During 2024, we progressed a number of key actions to advance engagement and inclusion within the organization including focus group discussions, review of our talent pipeline and overall development programs.

We created a program in 2022 for inclusive leadership, ensuring our leaders understand and have the tools to create an inclusive environment where all can thrive.

Our third inclusive leadership cohort kicked off a full year of experiential learning in 2024.

Our third inclusive leadership cohort kicked off a full year of experiential learning commencing in 2024 and concluding in 2025.

AdvanSix also seeks to improve gender equality in the manufacturing industry, starting with supporting science, technology, engineering and math (STEM) education and work in related fields.

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AdvanSix is committed to pay equity for its employees and regularly performs reviews of its compensation practices to evaluate and maintain pay equity in several respects, including by gender, ethnicity and race.

At a national level, AdvanSix continues its participation as a patron level supporter of the American Institute of Chemical Engineers’ ("AIChE") “Doing a World of Good” initiative that actively supports five high priority pillars within the chemical engineering field that align closely with sustainability and environmental, social and governance ("ESG") focus including engagement and inclusion.

In addition, AdvanSix supports the Future of STEM Scholars Initiative ("FOSSI"), a national, industry-wide program which provides scholarships to students pursuing STEM degrees at Historically Black Colleges and Universities ("HBCUs") and connections to internships, leadership development and mentoring opportunities.

In 2025, we offered summer internships to our FOSSI scholars and two of our FOSSI graduates joined AdvanSix as full-time employees.

Employee Development

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The executive officers of AdvanSix, listed as follows, are appointed annually by the Board.

Gramm were each first appointed as an executive officer in 2016, Ms.

Slieter and Mr.

Kintiroglou were each appointed as executive officers in 2020, and Mr.

Manjeshwar was appointed as an executive officer in 2024.

There are no family relationships among them or our Board members.

Name, Age Position Business Experience

Chief Executive Officer and Director Prior to joining the Company, Ms.

President and Chief Executive Officer and Director

Kane has served as our President and Chief Executive Officer and as a Director since the spin-off in 2016.

Prior to being named to her current role, Ms.

Kane served as vice president and general manager of Honeywell Resins and Chemicals since October 2014.

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She served on the Board of Directors of the AIChE from 2019 through 2021.

Kane brings to the Board her extensive leadership experience as well as knowledge of AdvanSix’s business, industry, health, safety and environmental processes, and operations.

Siddharth Manjeshwar, 48

Senior Vice President and Chief Financial Officer Prior to joining the Company, Mr.

Manjeshwar served as Vice President, Corporate Treasurer and Investor Relations at Air Products.

Prior to that, Mr.

Manjeshwar served as Chief Financial Officer at FirstLight Power from 2018 through 2021, as Vice President, Corporate Finance and M&A, and Treasurer at Dynegy Inc.

from 2012 through 2018, and in investment banking roles at Deutsche Bank Securities, Inc.

and Barclays Capital/Lehman Brothers from 2005 through 2012.

Christopher Gramm, 56

Vice President and Interim Chief Financial Officer

Gramm has served as our Vice President and Interim Chief Financial Officer since July 2025.

Prior to being named to his current role, Mr.

Gramm served as the vice president, financial planning and analysis of AdvanSix since March 2025 and as vice president, controller and principal accounting officer of AdvanSix from the spin-off in 2016 through March 2025.

Before joining AdvanSix, Mr.

Gramm served in various roles of increasing responsibility at Honeywell.

He joined Honeywell in 1997 as a senior staff accountant.

From 1997 to March 2011, Mr.

Gramm held several positions at Honeywell, including controller and chief financial officer of various divisions focused on areas including specialty materials and resins and chemicals.

Beginning in March 2011, he was vice president and controller of the aerospace division at Honeywell.

Additionally, from August 2014 to November 2015, Mr.

Gramm served as vice president of finance for the integrated supply chain of the aerospace division at Honeywell.

Before joining Honeywell, Mr.

Gramm was a manager at Corning Life Sciences.

Kintiroglou, 47

Senior Vice President, General Counsel and Corporate Secretary Prior to being named to his current role, Mr.

Kintiroglou was the deputy general counsel of AdvanSix since the spin-off in 2016.

Senior Vice President, General Counsel and Corporate Secretary Mr.

Kintiroglou has served as our Senior Vice President, General Counsel and Corporate Secretary since 2020.

Prior to being named to his current role, Mr.

Kintiroglou served as the deputy general counsel of AdvanSix since the spin-off in 2016.

Before joining AdvanSix, he was a corporate and securities partner at Day Pitney LLP and a corporate and finance associate at Pillsbury Winthrop Shaw Pittman LLP and Pitney Hardin LLP.

Senior Vice President and Chief Human Resources Officer Prior to joining the Company, Ms.

Senior Vice President and Chief Human Resources Officer Ms.

Slieter has served as our Senior Vice President and Chief Human Resources Officer since 2020.

Prior to being named to her current role, Ms.

Slieter served as vice president of human resources of Honeywell International Inc.

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From 2015 through 2018, she served as vice president, human resources of the Honeywell UOP business.

Christopher Gramm, 55

Vice President, Controller Prior to joining the Company, Mr.

Gramm served as vice president and controller of the aerospace and corporate government compliance divisions at Honeywell.

He joined Honeywell in 1997 as a senior staff accountant.

Over the course of the period from 1997 to March 2011, Mr.

Gramm held several positions at Honeywell, including controller and chief financial officer of various divisions focused on areas including specialty materials and resins and chemicals.

Beginning in March 2011, he was vice president and controller of the aerospace division at Honeywell.

From August 2014 to November 2015, Mr.

Gramm served as vice president of finance for the integrated supply chain of the aerospace division at Honeywell.

Before joining Honeywell, Mr.

Gramm was a manager at Corning Life Sciences.

Other Information

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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.

What changed 10-K

Item 1. Business