AdvanSix Inc. 10-K

Item 8. Financial Statements and Supplementary Data Report of Independent Registered Public Accounting Firm To the Board of Directors and Stockholders of AdvanSix Inc. Opinions on the Financial Statements and Internal Control over Financial Reporting We have audited the accompanying consolidated balance sheets of AdvanSix Inc. and its subsidiaries (the "Company") as of December 31, 2025 and 2024, and the related consolidated statements of operations, of comprehensive income, of stockholders’ equity and of cash flows for each of the three years in the period ended December 31, 2025, including the related notes (collectively referred to as the "consolidated financial statements"). We also have audited the Company's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the consolidated financial statements referred to above present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025 in conformity with accounting principles generally accepted in the United States of America. Also in our opinion, the Company maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the COSO. Basis for Opinions The Company's management is responsible for these consolidated financial statements, for maintaining effective internal control over financial reporting, and for its assessment of the effectiveness of internal control over financial reporting, included in Management’s Report on Internal Control over Financial Reporting appearing under Item 9A. Our responsibility is to express opinions on the Company’s consolidated financial statements and on the Company's internal control over financial reporting based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB. We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud, and whether effective internal control over financial reporting was maintained in all material respects. Our audits of the consolidated financial statements included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. Our audit of internal control over financial reporting included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, and testing and evaluating the design and operating effectiveness of internal control based on the assessed risk. Our audits also included performing such other procedures as we considered necessary in the circumstances. We believe that our audits provide a reasonable basis for our opinions. Definition and Limitations of Internal Control over Financial Reporting A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s 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 preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with 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 financial statements. Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. 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. Critical Audit Matters 41 The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates. Revenue Recognition – Transfer of Control As described in Notes 2 and 3 to the consolidated financial statements, the Company recorded $1,522 million in sales for the year ended December 31, 2025, of which a significant portion has transfer of control to the customer through commercially acceptable shipping terms. Sales of the Company’s products to customers are made under a purchase order, and in certain cases in accordance with the terms of a master services agreement. Management considers the performance obligation satisfied at the point in time when control of the product is transferred to the customer, which is indicated by shipment of the product and transfer of title and risk of loss to the customer. Transfer of control to the customer occurs through various modes of shipment, including trucks, railcars, and vessels, and follows a variety of commercially acceptable shipping point terms pursuant to the arrangement with the customer. The principal considerations for our determination that performing procedures relating to revenue recognition – transfer of control is a critical audit matter are a high degree of auditor subjectivity and effort in performing procedures and evaluating audit evidence relating to the determination of the point in time when control of the product was transferred to the customer and thus revenue was recognized. Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included testing the effectiveness of controls relating to the revenue recognition process, including controls over the point in time when control of the product was transferred to the customer. These procedures also included, among others, (i) testing sales transactions based on comparing data points such as invoice amount, invoice date, shipment date, price, and quantity; (ii) for a sample of data points, testing the completeness and accuracy of the data points used by management by obtaining and inspecting source documents, such as master sales agreements, purchase orders, invoices, proof of shipment and subsequent cash receipts; and (iii) for a sample of sales transactions before and subsequent to December 31, 2025, testing when control of the product was transferred to the customer by obtaining and inspecting source documents, such as purchase orders and proof of shipment. /s/ PricewaterhouseCoopers LLP Florham Park, NJ February 20, 2026 We have served as the Company’s auditor since 2015. 42 ADVANSIX INC. CONSOLIDATED STATEMENTS OF OPERATIONS (Dollars in thousands, except share and per share amounts) Years Ended December 31, 2025 2024 2023 Sales $ 1,522,233 $ 1,517,557 $ 1,533,599 Costs, expenses and other: Cost of goods sold 1,357,293 1,364,621 1,368,511 Selling, general and administrative expenses 104,750 94,023 95,538 Interest expense, net 8,481 11,311 7,485 Other non-operating (income) expense, net ( 2,722 ) 2,027 ( 7,158 ) Total costs, expenses and other 1,467,802 1,471,982 1,464,376 Income before taxes 54,431 45,575 69,223 Income tax expense 5,145 1,426 14,600 Net income $ 49,286 $ 44,149 $ 54,623 Earnings per common share Basic $ 1.83 $ 1.65 $ 2.00 Diluted $ 1.80 $ 1.62 $ 1.95 Weighted average common shares outstanding Basic 26,901,046 26,828,338 27,302,254 Diluted 27,327,449 27,255,213 28,007,630 The accompanying Notes to Consolidated Financial Statements are an integral part of this statement. 43 ADVANSIX INC. CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Dollars in thousands) Years Ended December 31, 2025 2024 2023 Net income $ 49,286 $ 44,149 $ 54,623 Foreign exchange translation adjustment 34 ( 109 ) 63 Cash-flow hedges 7 — ( 150 ) Pension obligation adjustments 2,985 10,223 140 Other comprehensive income, net of tax 3,026 10,114 53 Comprehensive income $ 52,312 $ 54,263 $ 54,676 The accompanying Notes to Consolidated Financial Statements are an integral part of this statement. 44 ADVANSIX INC. CONSOLIDATED BALANCE SHEETS (Dollars in thousands, except share and per share amounts) December 31, 2025 2024 ASSETS Current assets: Cash and cash equivalents $ 19,766 $ 19,564 Accounts and other receivables – net 154,102 145,673 Inventories – net 236,495 212,386 Taxes receivable 21,605 503 Other current assets 8,639 8,990 Total current assets 440,607 387,116 Property, plant and equipment – net 963,718 917,858 Operating lease right-of-use assets 164,494 153,438 Goodwill 56,192 56,192 Intangible assets 40,095 43,144 Other assets 41,042 37,172 Total assets $ 1,706,148 $ 1,594,920 LIABILITIES Current liabilities: Accounts payable $ 284,016 $ 228,761 Accrued liabilities 45,945 47,264 Operating lease liabilities – short-term 44,354 42,493 Income taxes payable 1,100 1,047 Deferred income and customer advances 14,536 37,538 Total current liabilities 389,951 357,103 Deferred income taxes 154,061 145,299 Operating lease liabilities – long-term 121,201 111,400 Line of credit – long-term 215,000 195,000 Other liabilities 10,719 11,468 Total liabilities 890,932 820,270 COMMITMENTS AND CONTINGENCIES (Note 11) STOCKHOLDERS' EQUITY Common stock, par value $ 0.01 ; 200,000,000 shares authorized; 33,177,824 shares issued and 26,864,035 outstanding at December 31, 2025; 32,989,165 shares issued and 26,737,036 outstanding at December 31, 2024 332 330 Preferred stock, par value $ 0.01 ; 50,000,000 shares authorized; 0 shares issued and outstanding at December 31, 2025 and 2024 — — Treasury stock at par ( 6,313,789 shares at December 31, 2025; 6,252,129 shares at December 31, 2024) ( 63 ) ( 63 ) Additional paid-in capital 142,932 136,872 Retained earnings 663,019 631,541 Accumulated other comprehensive income 8,996 5,970 Total stockholders' equity 815,216 774,650 Total liabilities and stockholders' equity $ 1,706,148 $ 1,594,920 The accompanying Notes to Consolidated Financial Statements are an integral part of this statement. 45 ADVANSIX INC. CONSOLIDATED STATEMENTS OF CASH FLOWS (Dollars in thousands) Years Ended December 31, 2025 2024 2023 Cash flows from operating activities: Net income $ 49,286 $ 44,149 $ 54,623 Adjustments to reconcile net income to net cash provided by operating activities: Depreciation and amortization 79,740 76,176 73,010 (Gain) loss on disposal of assets ( 81 ) 773 1,281 Deferred income taxes 7,821 ( 8,991 ) ( 9,347 ) Stock-based compensation 6,821 7,854 8,313 Amortization of deferred financing fees 597 618 618 Operational asset adjustments — 1,200 ( 4,472 ) Changes in assets and liabilities, net of business acquisitions: Accounts and other receivables ( 8,395 ) 18,411 21,489 Inventories ( 24,109 ) ( 555 ) 3,286 Taxes receivable ( 21,102 ) 931 8,337 Accounts payable 52,866 ( 30,610 ) ( 20,756 ) Income taxes payable 53 ( 6,986 ) 8,003 Accrued liabilities ( 808 ) 2,426 ( 5,569 ) Deferred income and customer advances ( 23,002 ) 21,860 ( 18,752 ) Other assets and liabilities 3,176 8,157 ( 2,514 ) Net cash provided by operating activities 122,863 135,413 117,550 Cash flows from investing activities: Expenditures for property, plant and equipment ( 116,445 ) ( 133,722 ) ( 107,377 ) Other investing activities ( 6,169 ) ( 9,180 ) ( 3,520 ) Net cash used for investing activities ( 122,614 ) ( 142,902 ) ( 110,897 ) Cash flows from financing activities: Borrowings from line of credit 370,500 406,000 437,000 Repayments of line of credit ( 350,500 ) ( 381,000 ) ( 382,000 ) Payment of line of credit facility fees ( 478 ) — — Principal payments of finance leases ( 1,002 ) ( 1,011 ) ( 938 ) Dividend payments ( 17,176 ) ( 17,135 ) ( 16,657 ) Purchase of treasury stock ( 1,658 ) ( 10,428 ) ( 46,151 ) Issuance of common stock 267 859 876 Net cash used for financing activities ( 47 ) ( 2,715 ) ( 7,870 ) Net change in cash and cash equivalents 202 ( 10,204 ) ( 1,217 ) Cash and cash equivalents at beginning of period 19,564 29,768 30,985 Cash and cash equivalents at the end of period $ 19,766 $ 19,564 $ 29,768 Supplemental non-cash investing activities: Capital expenditures included in accounts payable $ 26,670 $ 23,645 $ 22,660 Supplemental cash activities: Cash paid for interest $ 6,760 $ 10,828 $ 7,086 Cash paid for income taxes, net of refund $ 15,129 $ 16,591 $ 7,594 The accompanying Notes to Consolidated Financial Statements are an integral part of this statement. 46 ADVANSIX INC. CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY (Dollars in thousands) Common Stock Additional Paid-In Capital Retained Earnings Treasury Stock Accumulated Other Comprehensive Income (Loss) Total Equity Shares Amount Balance at December 31, 2022 31,977,593 $ 320 $ 174,585 $ 567,517 $ ( 45 ) $ ( 4,197 ) $ 738,180 Net Income — — — 54,623 — — 54,623 Comprehensive income Foreign exchange translation adjustments — — — — — 63 63 Cash-flow hedges — — — — — ( 150 ) ( 150 ) Pension obligation adjustments — — — — — 140 140 Other comprehensive income, net of tax — — — — — 53 53 Issuance of common stock 621,353 6 870 — — — 876 Acquisition of treasury shares ( 1,317,402 shares) — — ( 46,138 ) — ( 13 ) — ( 46,151 ) Stock-based compensation — — 8,313 — — — 8,313 Dividends — — 416 ( 17,073 ) — — ( 16,657 ) Balance at December 31, 2023 32,598,946 326 138,046 605,067 ( 58 ) ( 4,144 ) 739,237 Net Income — — — 44,149 — — 44,149 Comprehensive income Foreign exchange translation adjustments — — — — — ( 109 ) ( 109 ) Cash-flow hedges — — — — — — — Pension obligation adjustments — — — — — 10,223 10,223 Other comprehensive income, net of tax — — — — — 10,114 10,114 Issuance of common stock 390,219 4 855 — — — 859 Acquisition of treasury shares ( 453,654 shares) — — ( 10,423 ) — ( 5 ) — ( 10,428 ) Stock-based compensation — — 7,854 — — — 7,854 Dividends — — 540 ( 17,675 ) — — ( 17,135 ) Balance at December 31, 2024 32,989,165 330 136,872 631,541 ( 63 ) 5,970 774,650 Net Income — — — 49,286 — — 49,286 Comprehensive income Foreign exchange translation adjustments — — — — — 34 34 Cash-flow hedges — — — — — 7 7 Pension obligation adjustments — — — — — 2,985 2,985 Other comprehensive income, net of tax — — — — — 3,026 3,026 Issuance of common stock 188,659 2 265 — — — 267 Acquisition of treasury shares ( 61,660 shares) — — ( 1,658 ) — — — ( 1,658 ) Stock-based compensation — — 6,821 — — — 6,821 Dividends — — 632 ( 17,808 ) — — ( 17,176 ) Balance at December 31, 2025 33,177,824 $ 332 $ 142,932 $ 663,019 $ ( 63 ) $ 8,996 $ 815,216 The accompanying Notes to Consolidated Financial Statements are an integral part of this statement. 47 ADVANSIX INC. NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (Dollars in thousands, except share and per share amounts or unless otherwise noted) Note 1. Organization, Operations and Basis of Presentation Description of Business AdvanSix Inc. (“AdvanSix,” the “Company,” “we,” "us" or “our”) 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. We evaluated segment reporting in accordance with Accounting Standards Codification Topic (“ASC”) 280. We concluded that AdvanSix is a single operating segment and a single reportable segment based on the operating results available which are evaluated regularly by the chief operating decision maker (“CODM”) to make decisions about resource allocation and performance assessment on a consolidated basis. Our larger manufacturing sites are vertically integrated and leverage cross-plant resources, including centralized supply chain and procurement functions. This production process uses one key raw material, cumene, as the input to products produced for sale through the sales channels and end markets the Company serves. Production rates and output volumes are managed across locations to align with the overall Company operating plan. AdvanSix operates through five U.S.-based manufacturing sites located in Frankford, Pennsylvania, Chesterfield, Virginia, Hopewell, Virginia, Portsmouth, Virginia and Bucks, Alabama. The Company's headquarters is located in Parsippany, New Jersey. Corporate History On October 1, 2016, Honeywell International Inc. (“Honeywell”) completed the separation of AdvanSix. The separation was completed by Honeywell distributing (the "Distribution") all of the then outstanding shares of common stock of AdvanSix on October 1, 2016 (the “Distribution Date”) through a dividend in kind of AdvanSix common stock, par value $ 0.01 per share, to holders of Honeywell common stock as of the close of business on the record date of September 16, 2016 who held their shares through the Distribution Date. Basis of Presentation Unless the context otherwise requires, references in these Notes to the Consolidated Financial Statements to “we,” “us,” “our,” “AdvanSix” and the “Company” refer to AdvanSix Inc. and its consolidated subsidiaries after giving effect to the Spin-Off. All intercompany transactions have been eliminated. Note 2. Summary of Significant Accounting Policies Accounting Principles – The financial statements and accompanying Notes are prepared in accordance with accounting principles generally accepted in the United States of America. The following is a description of AdvanSix’s significant accounting policies. Principles of Consolidation – The Consolidated Financial Statements include the accounts of AdvanSix and all of its subsidiaries in which a controlling financial interest is maintained. Our consolidation policy requires equity investments that we exercise significant influence over but do not control the investee and are not the primary beneficiary of the investee’s activities to be accounted for using the equity method. All intercompany transactions and balances are eliminated in consolidation. Cash and Cash Equivalents – Cash and cash equivalents include cash on hand and on deposit and highly liquid, temporary cash investments with an original maturity to the Company of three months or less. We reduce cash and extinguish liabilities when the creditor receives our payment and we are relieved of our obligation for the liability when checks clear the Company’s bank account. Liabilities to creditors to whom we have issued checks that remain outstanding aggregated $ 4.9 million at December 31, 2025 and are included in Cash and cash equivalents and Accounts payable in the Consolidated Balance Sheets. 48 Fair Value Measurement – ASC 820, Fair Value Measurement defines fair value as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date (exit price). The three-tier hierarchy for inputs used in measuring fair value, which prioritizes the inputs used in the methodologies of measuring fair value for assets and liabilities, is as follows: Level 1 Unadjusted quoted prices in active markets for identical assets or liabilities Level 2 Unadjusted quoted prices in active markets for similar assets or liabilities, or Unadjusted quoted prices for identical or similar assets or liabilities in markets that are not active, or Inputs other than quoted prices that are observable for the asset or liability Level 3 Unobservable inputs for the asset or liability Financial and non-financial assets and liabilities are classified in their entirety based on the lowest level of input that is significant to the fair value measurement. The pension plan assets are invested in collective investment trust funds, mutual funds and pooled separate accounts. The collective investment trust funds and pooled separate accounts are measured at fair value using the net asset value per share practical expedient and have not been classified in the fair value hierarchy. The alternative equity investments are classified as Level 1 in the fair value hierarchy disclosure. The Company’s Consolidated Balance Sheets include Cash and cash equivalents, Accounts receivable and Accounts payable all of which are recorded at amounts which approximate fair value. The Company also has assets that are required to be recorded at fair value on a non-recurring basis. These assets are evaluated when certain triggering events occur (including a decrease in estimated future cash flows) that indicate the asset should be evaluated for impairment. Goodwill and indefinite lived intangible assets must be evaluated at least annually. Derivative Financial Instruments – We minimize our risks from interest and foreign currency exchange rate fluctuations through our normal operating and financing activities and, when deemed appropriate, through the use of derivative financial instruments. Derivative financial instruments are used to manage risk and are not used for trading or other speculative purposes. Derivative financial instruments that qualify for hedge accounting must be designated and effective as a hedge of the identified risk exposure at the inception of the contract. Accordingly, changes in fair value of the derivative contract must be highly correlated with changes in fair value of the underlying hedged item at inception of the hedge and over the life of the hedge contract. The Company currently has no derivative financial instruments. Commodity Price Risk Management – The Company's exposure to market risk for commodity prices can result in changes in our cost of production. We primarily mitigate our exposure to commodity price risk by using long-term, formula-based price contracts with our suppliers and formula-based price agreements with customers. Our customer agreements provide for price adjustments based on relevant market indices and raw material prices, and generally they do not include take-or-pay terms. Instead, each customer agreement, the majority of which have a term of at least one year, is typically determined by monthly or quarterly volume estimates. We may also enter into forward commodity contracts with third parties designated as hedges of anticipated purchases of several commodities. The Company currently has no forward commodity contracts. Credit and Market Risk Management – The Company manages its exposure to counterparty credit risk through specific minimum credit standards, diversification of counterparties, and procedures to monitor concentrations of credit risk. The Company continually monitors the creditworthiness of its customers to which it grants credit terms in the normal course of business. The terms and conditions of credit sales are designed to mitigate or eliminate concentrations of credit risk with any single customer . The Company did not have any customers with significant concentrations of trade accounts receivable – net at December 31, 2025 and 2024. Allowance for doubtful accounts is calculated based upon the Company's estimate of expected credit losses over the life of exposure based upon both historical information as well as future expected losses. Inventories – Substantially all of the Company's inventories are valued at the lower of cost or market using the last-in, first-out (“LIFO”) method. The Company includes spare and other parts in inventory which are used in support of production or production facilities operations and are valued based on weighted average cost. Inventories valued at LIFO amounted to $ 225.3 million and $ 196.5 million at December 31, 2025 and 2024, respectively. Had such LIFO inventories been valued at current costs, their carrying values would have been approximately $ 80.1 million and $ 64.1 million higher at December 31, 2025 and 2024. Inventories valued at FIFO amounted to $ 11.2 million and $ 15.9 million at December 31, 2025 and 2024, respectively. Property, Plant, Equipment – Property, plant, equipment asset values are recorded at cost, including any asset retirement obligations, less accumulated depreciation. For financial reporting, the straight-line method of depreciation is used over the estimated 49 useful lives of 10 to 40 years for buildings and improvements and 3 to 35 years for machinery and equipment. Our machinery and equipment includes (1) assets used in short production cycles or subject to high corrosion, such as instrumentation, controls and insulation systems with useful lives of 3 to 30 years, (2) standard plant assets, such as boilers and railcars, with useful lives ranging from 3 to 30 years and (3) major process equipment that can be used for long durations with effective preventative maintenance and repair, such as cooling towers, compressors, tanks and turbines with useful lives ranging from 3 to 35 years. Recognition of the fair value of obligations associated with the retirement of tangible long-lived assets is required when there is a legal obligation to incur such costs. Upon initial recognition of a liability, the cost is capitalized as part of the related long-lived asset and depreciated over the corresponding asset’s useful life. Repairs and maintenance, including planned major maintenance, are expensed as incurred. Costs which materially add to the value of the asset or prolong its useful life are capitalized and the replaced assets are retired. Long-Lived Assets – The Company evaluates the recoverability of the carrying amount of long-lived assets (including property, plant and equipment and intangible assets with determinable lives) whenever events or changes in circumstances indicate that the carrying amount of an asset may not be fully recoverable. The Company evaluates events or changes in circumstances based on several factors including operating results, business plans and forecasts, general and industry trends, and economic projections and anticipated cash flows. An impairment is assessed when the undiscounted expected future cash flows derived from the asset group are less than its carrying amount. Impairment losses are measured as the amount by which the carrying value of an asset group exceeds its fair value and are recognized in the Consolidated Statements of Operations. The Company also evaluates the estimated useful lives of long-lived assets if circumstances warrant and revises such estimates based on current events. Goodwill – The Company had goodwill of $ 56.2 million at December 31, 2025 and 2024. Goodwill is subject to impairment testing annually on the last day of our October close, or whenever events or changes in circumstances indicate that the carrying amount may not be fully recoverable. To determine if goodwill is potentially impaired, we have the option to perform a qualitative assessment to determine whether it is more likely than not that the fair value is less than the carrying value. The Company’s practice is to perform a quantitative impairment assessment at least every three years. Under the qualitative assessment, the Company considers several factors, including the enterprise value from the previous quantitative test and the excess of fair value over carrying value from such test, macroeconomic conditions (including changes in interest rates and discount rates), industry and market considerations, recent and projected financial performance of the Company, as well as other factors. The Company has concluded that, as of the fourth quarter of 2025, it is not more likely than not that an impairment of the goodwill balances exists. Our qualitative analysis reflects our best estimates of the impacts of the cyclical nature of the industries in which we operate, as well as the cycles of fluctuating supply and demand for each of our products resulting in changes in selling prices and margins. It is possible that in the future there may be changes in industry trends, estimates and assumptions, including the timing and amount of future cash flows, margins, growth rates, market participant assumptions, comparable benchmark companies and related multiples and discount rates, which could impact estimates of fair value. Significant and adverse changes to any one or more of the above-noted estimates and assumptions could result in an impairment. Finite-Lived Intangible Assets – Other intangible assets with determinable lives consist of customer relationships, trademarks, patents and other intangibles and are amortized over their estimated useful lives, ranging from 5 to 20 years. Revenue Recognition – The Company recognizes revenue upon the transfer of control of goods or services to customers at amounts that reflect the consideration expected to be received. AdvanSix primarily recognizes revenues when title and control of the product transfers from the Company to the customer. Outbound shipping costs incurred by the Company are not included in revenues but are reflected as freight expense in Cost of goods sold in the Consolidated Statements of Operations. Sales of our products to customers are made under a purchase order, and in certain cases in accordance with the terms of a master services agreement. These agreements typically contain formula-based pass-through pricing tied to key feedstock materials and volume ranges, but often do not specify the goods, including the quantities thereof, to be transferred. Certain master services agreements (including with respect to our largest customer) may contain minimum purchase volumes which can be satisfied by the customer on a periodic basis by choosing from various products offered by the Company. In these cases, a performance obligation is created when a customer submits a purchase order for a specific product at a specified price, typically providing for delivery within the next 60 days. Management considers the performance obligation with respect to such purchase order satisfied at the point in time when control of the product is transferred to the customer, which is indicated by shipment of the product and transfer of title and risk of loss to the customer. Transfer of control to the customer occurs through various modes of shipment, including trucks, railcars, and vessels, and generally follows commercially acceptable shipping point terms pursuant to the arrangement with the customer. In more limited circumstances, the Company recognizes revenue from sales of products that are subject to inventory consignment agreements, and transfer of control generally occurs when the customer pulls product from the consignment inventory location. Variable 50 consideration is estimated for future volume rebates and early pay discounts on certain products and product returns. The Company records variable consideration as an adjustment to the sale transaction price. Since variable consideration is generally settled within one year, the time value of money is not significant. The Company applies the practical expedient in Topic 606 and does not include disclosures regarding remaining performance obligations that have original expected durations of one year or less, or amounts for variable consideration allocated to wholly-unsatisfied performance obligations or wholly-unsatisfied distinct goods that form part of a single performance obligation, if any. The Company also utilizes the practical expedient in Topic 606 and does not include an adjustment for the effects of a significant financing component given the expected period duration of one year or less. Environmental – The Company accrues costs related to environmental matters when it is probable that we have incurred a liability related to an event or site and the amount can be reasonably estimated. Deferred Income and Customer Advances – AdvanSix typically has an annual pre-buy program for ammonium sulfate that is classified as deferred income and customer advances in the Consolidated Balance Sheets. Customers pay cash in advance to reserve capacity for ammonium sulfate to guarantee product availability during peak planting season. The Company recognizes a customer advance liability when cash is received for the advanced buy. Revenue is then recognized and the customer advance is relieved upon title transfer of ammonium sulfate. Trade Receivables and Allowance for Credit Losses – Trade accounts receivables are recorded at the invoiced amount as a result of transactions with customers. AdvanSix maintains allowances for credit losses for estimated losses based on a customer’s inability to make required payments. AdvanSix estimates anticipated losses from doubtful accounts based on days past due, as measured from the contractual due date and historical collection history and incorporates changes in economic conditions that may not be reflected in historical trends such as customers in bankruptcy, liquidation or reorganization. Receivables are written-off against the allowance for credit losses when they are determined uncollectible. Such determination includes analysis and consideration of the particular conditions of the account, including time intervals since last collection, customer performance against agreed upon payment plans, success of outside collection agencies activity, solvency of customer and any bankruptcy proceedings. Research and Development – AdvanSix conducts research and development (“R&D”) activities, which consist primarily of the development of new products and product applications consisting primarily of labor costs and depreciation and maintenance costs. R&D costs are charged to expense as incurred. Such costs are included in costs of goods sold and were $ 8.7 million, $ 8.8 million, and $ 9.8 million for the years ended December 31, 2025, 2024 and 2023, respectively. Debt Issuance Costs – Debt issuance costs are capitalized as a component of Other assets and are amortized through interest expense over the related term. Stock-Based Compensation Plans – The principal awards issued under our stock-based compensation plans, which are described in "Note 14. Stock-Based Compensation Plans" to the Consolidated Financial Statements included in Item 8 of this Form 10-K, are non-qualified stock options, performance stock units and restricted stock units. The cost for such awards is measured at the grant date based on the fair value of the award. The value of the portion of the award that is ultimately expected to vest, including the impact of the Company's anticipated performance against certain metrics for performance stock units, is recognized as expense over the requisite service periods (generally the vesting period of the equity award) and is included in selling, general and administrative expenses. Estimates of future performance are utilized to determine the underlying expense for shares expected to vest. Forfeitures are estimated at the time of grant to recognize expense for those awards that are expected to vest and are based on our historical forfeiture rates. Dividend Equivalents – If a dividend is authorized by the Board for stockholders of common stock, holders of unvested RSUs and unvested PSUs will have their accounts credited with dividend equivalents in the form and in an amount equal to the dividend that the holder would have received had the shares underlying the RSUs and PSUs been distributed at the time that such dividend was paid. Dividend equivalents are subject to the same vesting, forfeiture, performance and payment restrictions as the respective equity award for which it is attributable. Since the dividend equivalents are forfeitable, there is no impact on the basic earnings per share calculation. Pension Benefits – We have a defined benefit plan covering certain employees primarily in the U.S. The benefits are accrued over the employees’ service periods. We use actuarial methods and assumptions in the valuation of defined benefit obligations and the determination of net periodic pension income or expense. Differences between actual and expected results or changes in the value of defined benefit obligations and fair value of plan assets, if any, are not recognized in earnings as they occur but rather systematically over subsequent periods when net actuarial gains or losses are in excess of 10% of the greater of the fair value of plan assets or the plan’s projected benefit obligation. 51 Foreign Currency Translation – Assets and liabilities of subsidiaries operating outside the United States with a functional currency other than U.S. dollars are translated into U.S. dollars using year-end exchange rates. Sales, costs and expenses are translated at the average exchange rates in effect during the year. Foreign currency translation gains and losses are included as a component of Accumulated other comprehensive income (loss) in our Consolidated Balance Sheets. Income Taxes – We account for income taxes pursuant to the asset and liability method which requires us to recognize current tax liabilities or receivables for the amount of taxes we estimate are payable or refundable for the current year and deferred tax assets and liabilities for the expected future tax consequences attributable to temporary differences between the financial statement carrying amounts and their respective tax bases of assets and liabilities and the expected benefits of net operating loss and credit carryforwards. Deferred tax assets and liabilities are measured using enacted tax rates expected to apply to taxable income in the years in which those temporary differences are expected to be recovered or settled. The effect on deferred tax assets and liabilities of a change in tax rates is recognized in operations in the period enacted. A valuation allowance is provided when it is more likely than not that a portion or all of a deferred tax asset will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the reversal of deferred tax liabilities during the period in which related temporary differences become deductible. We apply the provisions of ASC 740 related to the accounting for uncertainty in income taxes recognized in an enterprise’s consolidated financial statements. ASC 740 prescribes a comprehensive model for the financial statement recognition, measurement, presentation and disclosure of uncertain tax positions taken or expected to be taken in income tax returns. The benefit of tax positions taken or expected to be taken in our income tax returns are recognized in the financial statements if such positions are more likely than not of being sustained upon examination by taxing authorities. Differences between tax positions taken or expected to be taken in a tax return and the benefit recognized and measured pursuant to the interpretation are referred to as “unrecognized benefits.” A liability is recognized (or amount of net operating loss carryover or amount of tax refundable is reduced) for an unrecognized tax benefit because it represents an enterprise’s potential future obligation to the taxing authority for a tax position that was not recognized as a result of applying the provisions of ASC 740. Interest costs and related penalties related to unrecognized tax benefits are required to be calculated, if applicable. Our policy is to classify tax related interest and penalties, if any, as a component of income tax expense. No interest or penalties related to unrecognized income tax benefits were recorded during the years ended December 31, 2025, 2024 and 2023. As of December 31, 2025 and 2024, no liability for unrecognized tax benefits was required to be reported. We do not expect any significant changes in our unrecognized tax benefits in the next year. Leases – The Company enters into agreements to lease transportation equipment, storage facilities, office space, dock access and other equipment. Operating leases have initial terms of up to 20 years with some containing renewal options subject to customary conditions. An arrangement is considered to be a lease if the agreement conveys the right to control the use of the identified asset in exchange for consideration. Operating leases, which are reported as Operating lease right-of-use assets, and Operating lease liabilities – short-term and Operating lease liabilities – long-term are included in our Consolidated Balance Sheets. Finance leases are included as a component of Property, plant and equipment – net, Accounts payable and Other liabilities in our Consolidated Balance Sheets. The Company elected the following practical expedients available in Topic 842: • the package of three expedients which allows the Company to not re-assess (i) whether any expired or existing contracts are, or contain, leases, (ii) lease classification for any expired or existing leases, and (iii) initial direct costs for any expired or existing leases; • the short-term lease practical expedient, which allows the Company to exclude leases with an initial term of 12 months or less ("short-term leases") from recognition in the Consolidated Balance Sheets; • the bifurcation of lease and non-lease components practical expedients, which did not require the Company to bifurcate lease and non-lease components for real estate leases; and • the land easements practical expedient, which allows the Company to carry forward the accounting treatment for land easements on existing agreements. Earnings Per Share – Basic earnings per share is based on the weighted average number of common shares outstanding. Diluted earnings per share is based on the weighted average number of common shares outstanding and all dilutive potential common shares outstanding. Treasury Stock – The Company has elected to account for treasury stock purchased under the constructive retirement method. For shares repurchased in excess of par, the Company will allocate the excess value to additional paid-in capital. 52 Use of Estimates – The preparation of the Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts in the Consolidated Financial Statements and related disclosures in the accompanying Notes. Actual results could differ from those estimates. Estimates and assumptions are periodically reviewed and the effects of changes are reflected in the Consolidated Financial Statements in the period they are determined to be necessary. Reclassifications – Certain prior period amounts have been reclassified for consistency with the current period presentation. Recent Accounting Pronouncements – The Company considers the applicability and impact of all Accounting Standards Updates (“ASUs”) issued by the Financial Accounting Standards Board (“FASB”). ASUs not discussed below were assessed and determined to be either not applicable or are expected to have minimal impact on our consolidated financial position or results of operations. On December 4, 2025, the FASB issued ASU No. 2025-10: Accounting for Government Grants Received by Business Entities. The amendments in this ASU establish the accounting for a government grant received. The amendments require that a grant received should not be recognized until (1) it is probable that (a) an entity will comply with conditions attached to the grant and (b) the grant will be received and (2) an entity meets the recognition guidance for a grant related to an asset or to income. The amendments require that a grant related to an asset be recognized on the balance sheet as the entity incurs the related costs for which the grant is intended to compensate, either as (1) deferred income (the deferred income approach) or (2) an adjustment to the cost basis in determining the carrying amount of the asset (the cost accumulation approach). A grant related to income and a grant related to an asset for which the deferred income approach is elected should be recognized in earnings on a systematic and rational basis over the periods in which an entity recognizes as expenses the costs for which the grant is intended to compensate. The amendments require that an entity present a grant related to income and a grant related to an asset for which the deferred income is elected as part of earnings either (1) separately under a general heading such as other income or (2) deducted from the related expense. In addition, the amendments require that an entity provide disclosures, including the nature of the government grant received, the accounting policies used to account for the grant, and significant terms and conditions of the grant. For public business entities, this update is effective for annual reporting periods beginning after December 15, 2028, and interim reporting periods within those annual reporting periods. Early adoption is permitted in both interim and annual reporting periods in which financial statements have not yet been issued or made available for issuance. The amendments in this ASU require that a business entity apply the guidance using a modified prospective approach, a modified retrospective approach or a retrospective approach to all government grants through a cumulative effect adjustment to the opening balance of retained earnings as of the beginning of the earliest period presented. The Company is evaluating the pronouncement and does not expect adoption to have a material impact on its consolidated financial position or results of operations. On December 8, 2025, the FASB issued ASU No. 2025-11: Interim Reporting (Topic 270), Narrow Scope Improvements. The amendments in this ASU provide a comprehensive list of interim disclosures that are required by GAAP. The amendments also clarify the applicability of Topic 270, the types of interim reporting, and the form and content of interim financial statements in accordance with GAAP to enhance consistency in interim reporting for all entities. The update is effective for interim reporting periods within annual reporting periods beginning after December 15, 2027 for public business entities. Early adoption is permitted. The amendments in this update can be applied either prospectively or retrospectively to any or all prior periods presented in the financial statements. The Company is evaluating the pronouncement and does not expect adoption to have a material impact on its consolidated financial position or results of operations. In August 2025, the FASB issued ASU 2025-05, Financial Instruments – Credit Losses (Topic 326): Practical Expedient for Measuring Expected Credit Losses on Certain Financial Assets. The amendments in this ASU provide a simplified approach for estimating credit losses on certain financial assets, including current accounts receivable, by permitting entities to elect a practical expedient when measuring expected credit losses. Under current guidance, when estimating expected credit losses, an entity must (1) consider not only historical loss experience but also adjust that information to reflect current conditions and reasonable and supportable forecasts and (2) include a measure of expected credit loss even if that risk is remote. The amendments in this ASU allow an entity, as a practical expedient, to: (1) Assume that current conditions as of the balance sheet date will remain unchanged over the remaining life of the financial asset; and (2) continue to adjust historical loss information to reflect current conditions to the extent that historical information does not already do so. The amendments are effective for annual reporting periods beginning after December 15, 2025, and interim reporting periods within those annual periods. Early adoption is permitted in any interim or annual period for which financial statements have not yet been issued or made available for issuance. The Company is currently evaluating the impact of this ASU on its consolidated financial statements and related disclosures. In November 2024, the FASB issued ASU 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses. The amendments in this ASU require disclosure, in the notes to the financial statements, of specified information about certain costs and expenses. The amendments require that at each interim and annual reporting period an entity will: (1) disclose the amounts of (a) purchases of inventory, (b) employee compensation, (c) depreciation, (d) intangible asset amortization, and (e) depreciation, depletion, and amortization recognized as part of oil-and gas-producing activities (or other amounts of depletion expense) included in each relevant expense caption. A relevant expense caption is an expense caption presented on the face of the income statement within continuing operations that contains any of the expense 53 categories listed in (a)-(e); (2) include certain amounts that are already required to be disclosed under current generally accepted accounting principles (GAAP) in the same disclosure as other disaggregation requirements; (3) disclose a qualitative description of the amounts remaining in relevant expense captions that are not separately disaggregated quantitatively; and (4) disclose the total amount of selling expense and, in annual reporting periods, an entity's definition of selling expense. The guidance is effective for annual reporting periods beginning after December 15, 2026, and interim reporting periods beginning after December 15, 2027. Early adoption is permitted. The amendments in this ASU should be applied either (1) prospectively to financial statements issued for reporting periods after the effective date of this ASU or (2) retrospectively to any or all prior periods presented in the financial statements. The Company is evaluating the pronouncement and does not expect adoption to have a material impact on the Company's consolidated financial position or results of operations. In December 2023, the FASB issued ASU 2023-09, Income Taxes (Topic 740): Improvements to Income Tax Disclosures. The amendments in this ASU require that public business entities, on an annual basis, disclose specific categories in the rate reconciliation and provide additional information for reconciling items that are equal to or greater than 5 percent of the amount computed by multiplying pretax income (or loss) by the applicable statutory income tax rate. The amendments also require that the Company disclose the following (net of refunds received): (1) the amount of income taxes paid disaggregated by federal (national), state, and foreign taxes and (2) the amount of income taxes paid disaggregated by individual jurisdictions in which income taxes paid is equal to or greater than 5 percent of total income taxes paid. Additionally, the amendments in this update eliminate the requirement for all entities to disclose the nature and estimate of the range of the reasonably possible change in the unrecognized tax benefits balance in the next 12 months or to make a statement that an estimate of the range cannot be made, and remove the requirement to disclose the cumulative amount of each type of temporary difference when a deferred tax liability is not recognized because of the exceptions to comprehensive recognition of deferred taxes related to subsidiaries and corporate joint ventures. This pronouncement is effective for annual periods beginning after December 31, 2024. The Company adopted ASU 2023-09 retrospectively in its Annual Report on Form 10-K effective December 31, 2025. In November 2023, the FASB issued ASU 2023-07, Segment Reporting (Topic 280). The amendments in this ASU require incremental disclosures about the Company's reportable segments, but do not change the definition of a segment or the guidance for determining reportable segments. The incremental disclosures should include (1) significant segment expenses that are regularly provided to the CODM and included within each reported measure of segment profit or loss, (2) an amount for other segment items by reportable segment and a description of its composition, (3) profit or loss and assets currently required by Topic 280 in interim periods, (4) clarification if the CODM uses more than one measure of a segment’s profit or loss in assessing segment performance and deciding how to allocate resources and (5) the title and position of the CODM and an explanation of how the CODM uses the reported measure(s) of segment profit or loss in assessing segment performance and deciding how to allocate resources. The guidance is effective for public entities with fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024. Early adoption is permitted. Additionally, public entities should apply the amendments retrospectively to all prior periods presented in the financial statements, unless impractical. The Company adopted ASU 2023-07 effective December 31, 2024, which did not have any impact on the Company's consolidated financial position or results of operations upon adoption. Note 3. Revenue AdvanSix serves approximately 375 customers annually, primarily in the United States, spanning a wide variety of industries worldwide. For 2025, 2024 and 2023, the Company's ten largest customers accounted for approximately 40 %, 38 % and 39 % of total sales, respectively. We typically sell to customers under master services agreements, with primarily one-year terms, or by purchase orders. We have historically experienced low customer turnover and have an average customer relationship of approximately 20 years. Our largest customer is Shaw Industries Group Inc. ("Shaw"), a significant consumer of caprolactam and Nylon 6 resin. 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 years ended December 31, 2025 and 2024, and 11 % for the year ended December 31, 2023. The Company’s revenue by product line, and related approximate percentage of total sales for 2025, 2024 and 2023 were as follows: Years Ended December 31, 2025 2024 2023 Nylon $ 309,678 20 % $ 348,501 23 % $ 356,632 23 % Caprolactam 271,370 18 % 276,303 18 % 298,375 20 % Plant Nutrients* 563,688 37 % 458,152 30 % 477,929 31 % Chemical Intermediates* 377,497 25 % 434,601 29 % 400,663 26 % $ 1,522,233 100 % $ 1,517,557 100 % $ 1,533,599 100 % 54 * 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. The Company’s revenues by geographic area, and related approximate percentage of total sales for 2025, 2024 and 2023 were as follows: Years Ended December 31, 2025 2024 2023 United States $ 1,309,755 86 % $ 1,304,971 86 % $ 1,250,094 82 % International* 212,478 14 % 212,586 14 % 283,505 18 % Total $ 1,522,233 100 % $ 1,517,557 100 % $ 1,533,599 100 % * Predominantly Latin America and Canada. Deferred Income and Customer Advances The Company defers revenues when cash payments are received in advance of our performance. Customer advances relate primarily to sales from the ammonium sulfate business. Below is a roll-forward of Deferred income and customer advances for the twelve months ended December 31, 2025: Deferred Income and Customer Advances 2025 Opening balance January 1, 2024 $ 37,538 Additional cash advances 14,318 Less amounts recognized in revenues ( 37,320 ) Ending balance December 31, 2025 $ 14,536 The Company expects to recognize as revenue the December 31, 2025 ending balance of Deferred income and customer advances within one year or less. Note 4. Income Taxes Years Ended December 31, 2025 2024 2023 Income before taxes U.S. $ 54,354 $ 45,497 $ 69,055 Non-U.S. 77 78 168 $ 54,431 $ 45,575 $ 69,223 Income taxes Income tax expense (benefit) consists of: Years Ended December 31, 2025 2024 2023 Current Provision (benefit): Federal $ ( 4,954 ) $ 7,525 $ 20,707 State 2,263 2,865 3,159 Non-U.S. 22 23 47 Total current provision (benefit) $ ( 2,669 ) $ 10,413 $ 23,913 Deferred Provision (benefit): Federal $ 6,516 $ ( 8,192 ) $ ( 8,886 ) State 1,298 ( 795 ) ( 427 ) Total deferred provision (benefit) 7,814 ( 8,987 ) ( 9,313 ) Total income tax expense $ 5,145 $ 1,426 $ 14,600 55 Upon adoption of ASU 2023-09, Improvements to Income Tax Disclosures, as described in Note 2, Recent Accounting Pronouncements, the U.S. federal statutory income tax rate is reconciled to the effective income tax rate as follows. ASU 2023-09 has been retrospectively adopted and the table below has been updated for all periods presented: Years Ended December 31, 2025 2024 2023 Amount Percentage Amount Percentage Amount Percentage U.S. federal statutory income tax rate $ 11,431 21.0 % $ 9,570 21.0 % $ 14,536 21.0 % U.S. state income taxes, net of federal income tax effect (a) 2,798 5.1 % 1,635 3.6 % 2,157 3.1 % Foreign tax effects 6 — % 6 — % 14 — % Effect of cross-border tax laws: Foreign derived intangible income deduction — — % ( 384 ) ( 0.8 ) % ( 842 ) ( 1.2 ) % Other 2 — % 4 — % ( 21 ) — % Tax Credits: Energy credits ( 9,702 ) ( 17.8 ) % ( 9,748 ) ( 21.4 ) % — — % Research and development tax credits ( 624 ) ( 1.2 ) % ( 433 ) ( 1.0 ) % ( 935 ) ( 1.4 ) % Other ( 28 ) — % ( 29 ) ( 0.1 ) % ( 30 ) ( 0.1 ) % Nontaxable or nondeductible items: Executive compensation limitations 1,455 2.7 % 1,774 3.9 % 697 1.0 % Excess tax benefits of equity compensation ( 399 ) ( 0.7 ) % ( 959 ) ( 2.1 ) % ( 1,003 ) ( 1.3 ) % Other 206 0.4 % ( 10 ) — % 27 — % Effective income tax rate $ 5,145 9.5 % $ 1,426 3.1 % $ 14,600 21.1 % (a) During the year ended December 31, 2023, states taxes in South Carolina and West Virginia made up the majority (greater than 50%) of the tax effect in this category. During the year ended December 31, 2024, states taxes in Alabama, Georgia, Kentucky and Michigan made up the majority (greater than 50%) of the tax effect in this category. During the year ended December 31, 2025, states taxes in Delaware, Iowa, Minnesota and Pennsylvania made up the majority (greater than 50%) of the tax effect in this category. Upon adoption of ASU 2023-09, cash paid for income taxes, net of refunds, during the years ended December 31, 2025, 2024, and 2023 were as follows: Income Taxes Paid and Refunds: Years Ended December 31, 2025 2024 2023 Federal taxes paid, net of refunds $ 12,900 $ 15,383 $ 6,006 State and local taxes paid, net of refunds 2,220 1,189 1,548 Foreign taxes paid, net of refunds 9 19 40 Income taxes paid, net of refunds $ 15,129 $ 16,591 $ 7,594 The Company's effective income tax rate differs from the U.S. statutory rate of 21% due to state taxes and executive compensation limitations which generally increase the effective income tax rate. Research tax credits, excess tax benefits of equity compensation and the foreign derived intangible income deduction recorded in a period generally decrease the effective income tax rate. Additionally, the Company's effective income tax rate for 2024 and 2025 was less than the U.S. Federal statutory rate of 21% due to Internal Revenue Code (IRC) Section 45Q tax credits of approximately $ 9.7 million claimed in each of those years for credits generated in tax periods 2018, 2019 and 2020. IRC Section 45Q allows a taxpayer to receive a tax credit for carbon capture and utilization at its facilities. For certain utilization projects, the 45Q tax credit requires approval by the Internal Revenue Service (IRS) of a life-cycle assessment ("LCA") prior to claiming the tax credits. The Company received approval for its 2018 LCA in November 2024, which the Company was able to rely on for 2018 through 2020. Approximately $ 18.1 million of the 45Q tax credits claimed for these periods are reflected in Taxes receivable as of December 31, 2025. The Company continues to pursue IRC section 45Q tax credits for the periods after 2020. The Company's effective income tax rate for 2023 approximated the U.S. Federal statutory rate of 21%. Increases to the effective income tax rate due primarily to state taxes and executive compensation limitations, were materially offset by research tax credits, excess tax benefits of equity compensation and the foreign-derived intangible income deduction. On July 4, 2025, the One Big Beautiful Bill Act (the "Act") was enacted into law, which includes numerous tax provisions affecting businesses, including the reinstatement of full expensing of domestic research and experimental expenditures, modification of the 56 limitation on business interest and making permanent full expensing for certain business property. These provisions resulted in an approximately $ 9 million reduction in cash taxes in our financial results for the period ended December 31, 2025. As of December 31, 2025 and 2024, there were no unrecognized tax benefits recorded by the Company. Although there are no unrecognized income tax benefits, when applicable, the Company’s policy is to report interest expense and penalties related to unrecognized income tax benefits in the income tax provision. The Company is subject to taxation in the United States and various states and foreign jurisdictions. The Company is currently under audit for U.S. federal tax purposes for periods 2018 through 2021. Tax periods 2022 through 2025 remain open under the statute of limitations and are subject to examination by the tax authorities. There are no current state or foreign tax examinations; however, tax years 2021 through 2025 generally remain open under the statute of limitations and are subject to examination by the tax authorities. Deferred tax assets (liabilities) The tax effects of temporary differences which give rise to future income tax benefits and expenses are as follows: December 31, 2025 2024 Deferred tax assets: Net operating loss $ 98 $ 92 Accruals and reserves 6,399 4,317 Capitalization of research expenses 459 7,787 Inventory 22,545 17,346 Operating lease liability 39,921 36,931 Equity compensation 2,799 2,899 Other 46 — Total gross deferred tax assets 72,267 69,372 Less: Valuation Allowance — — Total deferred tax assets $ 72,267 $ 69,372 Deferred tax liabilities: Property, plant & equipment $ ( 169,962 ) $ ( 163,991 ) Intangibles ( 12,678 ) ( 10,857 ) Operating lease asset ( 39,665 ) ( 36,822 ) Pension obligation ( 1,135 ) ( 421 ) Other ( 2,888 ) ( 2,580 ) Total deferred tax liabilities ( 226,328 ) ( 214,671 ) Net deferred taxes $ ( 154,061 ) $ ( 145,299 ) The net deferred taxes are primarily related to U.S. operations. The Company has no material state net operating losses (NOL) carryforwards and no material federal or state tax credit carryforwards remaining as of December 31, 2025. We believe that the state NOL and tax credit carryforwards and other deferred tax assets are more likely than not to be realized and we have no t recorded a valuation allowance against the deferred tax assets. The Company's accounting policy is to record the tax impacts of Global intangible low-taxed income as a period cost. As of December 31, 2025 and 2024, there were no material undistributed earnings of the Company's non-U.S. subsidiaries and, as such, we have not provided a deferred tax liability for undistributed earnings. Note 5. Accounts and Other Receivables – Net 57 December 31, 2025 2024 Accounts receivables $ 153,059 $ 141,273 Other 1,438 4,982 Total accounts and other receivables 154,497 146,255 Less – allowance for credit losses ( 395 ) ( 582 ) Total accounts and other receivables – net $ 154,102 $ 145,673 The roll-forward of allowance for credit losses are summarized in the table below: Balance at Beginning of Year Charged / (Credited) to Costs Charged to Other Accounts (1) Bad Debt Write-Offs (1) Balance at End of Year Year ended December 31, 2025 $ 582 $ ( 128 ) $ — $ ( 59 ) $ 395 Year ended December 31, 2024 833 ( 893 ) 228 414 582 Year ended December 31, 2023 594 458 47 ( 266 ) 833 (1) No Impact to Statement of Operations Note 6. Inventories December 31, 2025 2024 Raw materials $ 116,248 $ 99,320 Semi-finished and finished goods 167,498 145,169 Spares and other 32,877 31,948 316,623 276,437 Reduction to LIFO cost basis ( 80,128 ) ( 64,051 ) Total inventories $ 236,495 $ 212,386 Substantially all of the Company’s inventories at December 31, 2025 and 2024 are valued at the lower of cost or market using the LIFO method. However, approximately 5 % was valued at average cost using the first-in, first-out (“FIFO”) method at December 31, 2025. The excess of replacement cost over the carrying value of total inventories subject to LIFO was $ 61.3 million and $ 57.5 million at December 31, 2025 and 2024, respectively. Note 7. Property, Plant, Equipment – Net December 31, 2025 2024 Land and improvements $ 11,761 $ 11,761 Machinery and equipment 1,799,142 1,698,835 Buildings and improvements 254,999 244,761 Construction in progress 75,756 95,053 2,141,658 2,050,410 Less – accumulated depreciation ( 1,177,940 ) ( 1,132,552 ) Total property, plant, equipment – net $ 963,718 $ 917,858 Capitalized interest was $ 6,783 , $ 5,666 and $ 3,375 for the years ended December 31, 2025, 2024 and 2023, respectively. Depreciation expense was $ 74,377 , $ 70,750 and $ 67,528 for the years ended December 31, 2025, 2024 and 2023, respectively. Note 8. Leases We determine if an arrangement is a lease at inception. Operating leases, which are reported as Operating lease right-of-use assets ("ROU"), Operating lease liabilities – short-term, and Operating lease liabilities – long-term are included in our Consolidated Balance 58 Sheets. Finance leases are included in Property, plant and equipment – net, Accounts payable, and Other liabilities in our Consolidated Balance Sheets. ROU assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Operating lease ROU assets and liabilities are recognized at commencement date based on the present value of lease payments over the lease term. As most of our leases do not provide an implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. We use the implicit rate when readily determinable. The operating lease ROU asset also includes any lease pre-payments made and excludes lease incentives. Our lease terms may include options to extend or terminate the lease and, when it is reasonably certain that such an option will be exercised, it is included in the determination of the corresponding assets and liabilities. Short-term leases are not recognized on our Consolidated Balance Sheets. Lease expense for all operating lease payments is recognized on a straight-line basis over the lease term. We have lease agreements with lease and non-lease components, which are generally accounted for separately. Additionally, for certain equipment leases, we apply a portfolio approach to effectively account for the operating lease ROU assets and liabilities. The Company has entered into agreements to lease transportation equipment, storage facilities, office space, dock access and other equipment. The operating leases have initial terms of up to 20 years with some containing renewal options subject to customary conditions. The term and length of the various agreements, as well as the timing of any renewals, will impact the ROU asset calculation and related liability. The components of lease expense were as follows: Years Ended December 31, 2025 2024 2023 Finance lease cost: Amortization of right-of-use asset $ 1,027 $ 1,036 $ 932 Interest on lease liabilities 149 163 106 Total finance lease cost 1,176 1,199 1,038 Operating lease cost 53,748 43,517 47,148 Short-term lease cost 4,181 6,647 5,415 Total lease cost $ 59,105 $ 51,363 $ 53,601 Supplemental cash flow information related to leases was as follows: Years Ended December 31, 2025 2024 Cash paid for amounts included in the measurement of lease liabilities: Operating cash flows from operating leases $ 52,782 $ 43,188 Operating cash flows from finance leases 149 124 Financing cash flows from finance leases 1,002 1,011 Non-cash information: Right-of-use assets obtained in exchange for lease obligations: Operating leases 12,375 72,361 Finance leases 684 1,218 Supplemental balance sheet information related to leases was as follows: 59 Years Ended December 31, 2025 2024 Operating Leases Operating lease right-of-use assets $ 164,494 $ 153,438 Operating lease liabilities – short term 44,354 42,493 Operating lease liabilities – long term 121,201 111,400 Total operating lease liabilities $ 165,555 $ 153,893 Finance Leases Property, plant and equipment – gross $ 2,707 $ 4,131 Accumulated depreciation ( 592 ) ( 1,771 ) Property, plant and equipment – net $ 2,115 $ 2,360 Accounts payable $ 945 $ 897 Other liabilities 1,194 1,549 Total finance lease liabilities $ 2,139 $ 2,446 Weighted Average Remaining Lease Term Operating leases 7.0 years 7.2 years Finance leases 2.5 years 3.1 years Weighted Average Discount Rate Operating leases 6.46 % 6.16 % Finance leases 6.61 % 6.92 % Maturities of lease liabilities are as follows: Year Ending December 31, Operating Leases Finance Leases 2026 $ 54,516 $ 1,064 2027 43,399 768 2028 36,925 433 2029 22,324 50 2030 16,506 15 Thereafter 38,516 — Total lease payments 212,186 2,330 Less imputed interest ( 46,631 ) ( 191 ) Total $ 165,555 $ 2,139 As of December 31, 2025, we have no additional operating or finance leases that have not yet commenced. Note 9. Long-term Debt and Credit Agreement The Company’s debt consisted of the following at December 31,: 2025 2024 Total term loan outstanding $ — $ — Amounts outstanding under the Revolving Credit Facility 215,000 195,000 Total outstanding indebtedness 215,000 195,000 Less: amounts expected to be repaid within one year — — Total long-term debt due after one year $ 215,000 $ 195,000 At December 31, 2025, the Company assessed the Revolving Credit Facility (defined below) and determined that such amounts approximated fair value. The fair values of the debt are based on quoted inactive market prices and are therefore classified as Level 2 within the valuation hierarchy. 60 Credit Agreement On October 27, 2021, the Company completed a refinancing of the Second Amended and Restated Credit Agreement by entering into a new Credit Agreement (the “Credit Agreement”), among the Company, the lenders party thereto, the swing line lenders party thereto, the letter of credit issuers party thereto and Truist Bank, as administrative agent, which provides for a new senior secured revolving credit facility in an aggregate principal amount of $ 500 million (the “Revolving Credit Facility”). Borrowings under the Revolving Credit Facility are subject to customary borrowing conditions. The Revolving Credit Facility had a scheduled maturity date of October 27, 2026 (which was extended pursuant to an October 2025 amendment, as described in more detail below. The Credit Agreement permits the Company to utilize up to $ 40 million of the Revolving Credit Facility for the issuance of letters of credit and up to $ 40 million for swing line loans. The Company has the option to establish a new class of term loans and/or increase the amount of the Revolving Credit Facility in an aggregate principal amount for all such incremental term loans and increases of the Revolving Credit Facility of up to the sum of (x) $ 175 million plus (y) an amount such that the Company’s Consolidated First Lien Secured Leverage Ratio (as defined in the Credit Agreement) would not be greater than 2.75 to 1.00, in each case, to the extent that any one or more lenders, whether or not currently party to the Credit Agreement, commits to be a lender for such amount or any portion thereof. Borrowings under the Credit Agreement bear interest at a rate equal to either the sum of a base rate plus a margin ranging from 0.25 % to 1.25 % or the sum of an Adjusted Term SOFR rate plus a margin ranging from 1.25 % to 2.25 %, with either such margin varying according to the Company’s Consolidated Leverage Ratio (as defined in the Credit Agreement). The Company is also required to pay a commitment fee in respect of unused commitments under the Revolving Credit Facility, if any, at a rate ranging from 0.15 % to 0.35 % per annum depending on the Company’s Consolidated Leverage Ratio. Substantially all tangible and intangible assets of the Company and its domestic subsidiaries are pledged as collateral to secure the obligations under the Credit Agreement. The Credit Agreement contains customary covenants limiting the ability of the Company and its subsidiaries to, among other things, pay cash dividends, incur debt or liens, redeem or repurchase stock of the Company, enter into transactions with affiliates, make investments, make capital expenditures, merge or consolidate with others or dispose of assets. The Credit Agreement also contains financial covenants that require the Company to maintain a Consolidated Interest Coverage Ratio (as defined in the Credit Agreement) of not less than 3.00 to 1.00 and to maintain a Consolidated Leverage Ratio of 3.75 to 1.00 or less (subject to the Company’s option to elect a consolidated leverage ratio increase in connection with certain acquisitions). If the Company does not comply with the covenants in the Credit Agreement, the lenders may, subject to customary cure rights, require the immediate payment of all amounts outstanding under the Revolving Credit Facility. We were in compliance with all of our covenants at December 31, 2025. On October 23, 2025, the Company entered into Amendment No. 2 (the “Amendment”) to the Credit Agreement (as further amended by the Amendment, the “Amended Credit Agreement”), among the Company, the guarantors, the lenders party thereto and Truist Bank, as administrative agent. Pursuant to the Amendment, the Credit Agreement was amended to, among other things: (i) extend the maturity date of the Revolving Credit Facility for participating Revolving Credit Lenders, as defined in the Amended Credit Agreement, in an aggregate principal amount of $ 452 million to the earlier of (x) October 27, 2027 and (y) the date of the termination in whole of the Revolving Credit Facility, pursuant to the terms of the Amended Credit Agreement, and (ii) effect certain other conforming changes and modifications consistent with the foregoing. The remaining $ 48 million under the Revolving Credit Facility that was not extended will continue to mature on the earlier of (x) October 27, 2026 and (y) the date of the termination in whole of the Revolving Credit Facility, pursuant to the terms of the Amended Credit Agreement. Note 10. Postretirement Benefit Obligations Defined Contribution Benefit Plan On January 1, 2017, the Company established a defined contribution plan which covers all eligible U.S. employees. Our plan allows eligible employees to contribute a portion of their cash compensation to the plan to save for their future retirement needs. The Company matches 50 % or 75 % of the first 8 % of contributions for employees covered by a collective bargaining agreement, dependent upon the terms of the respective collective bargaining agreement and matches 75 % of the first 8 % of the employee’s contribution election for all other employees. The plan’s matching contributions vest after three years of service with the Company. The Company may also provide an additional discretionary retirement savings contribution which is at the sole discretion of the Company. The Company made contributions to the defined contribution plan of $ 6.7 million, $ 6.8 million and $ 6.0 million for the years ended December 31, 2025, 2024 and 2023, respectively. Defined Benefit Pension Plan 61 Prior to the Spin-Off certain of our employees participated in a defined benefit pension plan (the “Shared Plan”) sponsored by Honeywell which includes participants of other Honeywell subsidiaries and operations. We accounted for our participation in the Shared Plan as a multi-employer benefit plan. Accordingly, we did not record an asset or liability to recognize the funded status of the Shared Plan. The related pension expense was allocated based on annual service cost of active participants and reported within Costs of goods sold and Selling, general and administrative expenses in the Statements of Operations. As of the date of separation from Honeywell, these employees’ entitlement to benefits in Honeywell’s plans was frozen and they will accrue no further benefits in Honeywell’s plans. Honeywell retained the liability for benefits payable to eligible employees, which are based on age, years of service and average pay upon retirement. Upon consummation of the Spin-Off, AdvanSix employees who were participants in a Honeywell defined benefit pension plan became participants in the AdvanSix defined benefit pension plan (“AdvanSix Retirement Earnings Plan”). The AdvanSix Retirement Earnings Plan has the same benefit formula as the Honeywell defined benefit pension plan. Moreover, vesting service, benefit accrual service and compensation credited under the Honeywell defined benefit pension plan apply to the determination of pension benefits under the AdvanSix Retirement Earnings Plan. Benefits earned under the AdvanSix Retirement Earnings Plan shall be reduced by the value of benefits accrued under the Honeywell plans. The following tables summarize the balance sheet impact, including the benefit obligations, assets and funded status associated with the AdvanSix Retirement Earnings Plan. Change in benefit obligation: 2025 2024 2023 Benefit obligation at January 1, $ 87,288 $ 93,270 $ 80,174 Service Cost 3,961 4,877 4,906 Interest Cost 4,684 4,524 4,048 Actuarial losses (gains) 5,782 ( 12,285 ) 6,636 Benefits Paid ( 3,510 ) ( 3,098 ) ( 2,494 ) Benefit obligation at December 31, $ 98,205 87,288 93,270 Change in plan assets: Fair value of plan assets at January 1, 89,039 86,084 77,362 Actual return on plan assets 15,683 6,053 11,216 Benefits paid ( 3,510 ) ( 3,098 ) ( 2,494 ) Fair value of plan assets at December 31, 101,212 89,039 86,084 Under (Over)-Funded status of plan $ ( 3,007 ) $ ( 1,751 ) $ 7,186 Amounts recognized in Balance Sheet consists of: Accrued pension liabilities-current (1) $ — $ — $ 3,526 Accrued pension liabilities-noncurrent (2) — — 3,660 Pension asset-noncurrent (3) ( 3,007 ) ( 1,751 ) — Total pension liabilities (assets) recognized $ ( 3,007 ) $ ( 1,751 ) $ 7,186 (1) Included in accrued liabilities on Balance Sheet (2) Included in postretirement benefit obligations on Balance Sheet (3) Included in other assets on Balance Sheet Pension amount recognized in accumulated other comprehensive loss (income) associated with the Company's pension plan are as follows for: Years Ended December 31, 2025 2024 2023 Transition obligation $ — $ — $ — Prior service cost — — — Net actuarial gain ( 18,658 ) ( 14,725 ) ( 1,271 ) Pension amount recognized in other comprehensive income: $ ( 18,658 ) $ ( 14,725 ) $ ( 1,271 ) The components of net periodic benefit cost and other amounts recognized in other comprehensive income for our pension plan include the following components: 62 Years Ended December 31, 2025 2024 2023 Net periodic pension cost (benefit) Service cost $ 3,961 $ 4,877 $ 4,906 Interest cost 4,684 4,524 4,048 Expected return on plan assets ( 5,038 ) ( 4,884 ) ( 4,396 ) Recognition of actuarial gain ( 930 ) — — Net periodic Pension Cost 2,677 4,517 4,558 Other changes in benefits obligations recognized in other comprehensive loss (income) Actuarial gain ( 3,933 ) ( 13,455 ) ( 184 ) Total recognized in other comprehensive income ( 3,933 ) ( 13,455 ) ( 184 ) Total net periodic pension cost (benefit) recognized in Other comprehensive income $ ( 1,256 ) $ ( 8,938 ) $ 4,374 The estimated actuarial gain that was amortized from accumulated other comprehensive income (loss) into net periodic benefit cost was $ 0.9 million in 2025 and nil in 2024 and 2023. Significant actuarial assumptions used in determining the benefit obligations and net periodic benefit cost for our pension plan were as follows: Key actuarial assumptions used to determine benefit obligations at December 31, 2025 2024 2023 Effective discount rate for benefit obligation 5.6 % 5.8 % 5.1 % Expected annual rate of compensation increase 2.8 % 2.9 % 2.9 % Key actuarial assumptions used to determine the net periodic benefit cost for the years ended December 31, 2025 2024 2023 Effective discount rate for service cost 5.8 % 5.1 % 5.3 % Effective discount rate for interest cost 5.5 % 4.9 % 5.1 % Expected long-term rate of return 6.5 % 6.5 % 6.5 % Expected annual rate of compensation increase 2.9 % 2.9 % 2.9 % The discount rate for our pension plan reflects the current rate at which the associated liabilities could be settled at the measurement date of December 31 of a given year. To determine discount rates for our pension plan, we use a modeling process that involves matching the expected cash outflows of our benefit plan to a yield curve constructed from a portfolio of high quality, fixed-income debt instruments. We use the single weighted-average yield of this hypothetical portfolio as a discount rate benchmark. The long-term expected rate of return on funded assets is developed by using forward-looking long-term return assumptions for each asset class. Management incorporates the expected future investment returns on current and planned asset allocations using information from external investment consultants as well as management judgment. A single rate is then calculated as the weighted average of the target asset allocation percentages and the long-term return assumption for each asset class. The accumulated benefit obligation for our pension plan was $ 89.9 million, $ 79.7 million and $ 81.3 million as of December 31, 2025, 2024 and 2023, respectively. Benefit payments, including amounts to be paid from Company assets, and reflecting expected future service, as appropriate, are expected to be paid during the following years: 2026 $ 4,407 2027 5,069 2028 5,516 2029 6,146 2030 6,646 Thereafter 39,201 Our general funding policy for our pension plan is to contribute amounts at least sufficient to satisfy regulatory funding standards. The Company was no t required to make pension plan contributions during the years ended December 31, 2025, 2024 and 2023. Earnings 63 from our investments were sufficient to satisfy pension funding requirements under the AdvanSix Retirement Earnings Plan during these periods. The Company expects to make pension plan contributions during 2026 sufficient to satisfy pension funding requirements estimated to be approximately $ 3 million, as well as evaluate contributions in future years sufficient to satisfy pension funding requirements in those periods. The pension plan assets are invested through a master trust fund. The strategic asset allocation for the trust fund is selected by the Company's Investment Committee reflecting the results of comprehensive asset and liability modeling. The Investment Committee establishes strategic asset allocation percentage targets and appropriate benchmarks for significant asset classes with the aim of achieving a prudent balance between return and risk. The target asset allocation percent for the Company's pension plan assets is summarized as follows: Years Ended December 31, 2025 2024 Cash and cash equivalents 3 % 3 % US and non-US equity securities 36 % 44 % Fixed income/ real estate/ other securities 32 % 33 % Alternative equity 29 % 20 % Total Pension Assets 100 % 100 % Fixed income and other securities include investment grade securities covering the Treasury, agency, asset-backed, mortgage-backed and credit sectors of the U.S. Bond Market, as well as listed real estate companies and real estate investment trusts located in both developed and emerging markets. Fair Value at December 31, Fair Value Measurements 2025 2024 2023 Level 1 Investments Mutual Fund $ 31,582 $ — $ — Investments valued using NAV per share Emerging Markets Region Equities 6,214 5,184 4,839 International Region Equities 18,821 17,618 16,975 United States Equities 14,906 41,235 38,324 United States Bonds 27,677 22,034 22,988 Real Estate 1,414 1,360 1,391 Cash Fund 598 1,608 1,567 Total Pension Plan Assets at Fair Value $ 101,212 $ 89,039 $ 86,084 The pension plan assets are invested in collective investment trust funds, mutual funds and pooled separate accounts, as shown above. The collective investment trust funds and pooled separate accounts are measured at fair value using the net asset value ("NAV") per share practical expedient and have not been classified in the fair value hierarchy. The mutual funds are classified as Level 1 in the fair value hierarchy. Note 11. Commitments and Contingencies Litigation The Company is subject to a number of lawsuits, investigations and disputes, some of which involve substantial amounts claimed, arising out of the conduct of the Company or other third-parties in the normal and ordinary course of business. A liability is recognized for any contingency that is probable of occurrence and reasonably estimable. The Company continually assesses the likelihood of adverse judgments or outcomes in these matters, as well as potential ranges of possible losses (taking into consideration any insurance recoveries), based on an analysis of each matter with the assistance of legal counsel and, if applicable, other experts. Given the uncertainty inherent in such lawsuits, investigations and disputes, the Company does not believe it is possible to develop estimates of reasonably possible loss in excess of current accruals for these matters. Considering the Company’s past experience and 64 existing accruals, the Company does not expect the outcome of these matters, either individually or in the aggregate, to have a material adverse effect on the Company’s Consolidated Balance Sheets, results of operations or cash flows. Potential liabilities are subject to change due to new developments, changes in settlement strategy or the impact of evidentiary requirements, which could cause the Company to pay damage awards or settlements (or become subject to equitable remedies) that could have a material adverse effect on the Company’s consolidated results of operations, balance sheet and/or operating cash flows in the periods recognized or paid. We assumed from Honeywell all health, safety and environmental (“HSE”) liabilities and compliance obligations related to the past and future operations of our current business, as well as all HSE liabilities associated with our three current manufacturing locations and the other locations used in our current operations, including any cleanup or other liabilities related to any contamination that may have occurred at such locations in the past. Honeywell retained all HSE liabilities related to former business locations or the operation of our former businesses. Although we have ongoing environmental remedial obligations at certain of our facilities, in the past three years, the associated remediation costs have not been material, and we do not expect our known remediation costs to be material for 2026. Unconditional Purchase Obligations In the normal course of business, the Company makes commitments to purchase goods with various vendors which are consistent with our expected requirements and generally relate to cumene, sulfur and natural gas as well as a long-term agreement for loading, unloading and the handling of a portion of our ammonium sulfate export volumes. Future minimum payments for these unconditional purchase obligations as of December 31, 2025 are as follows (dollars in thousands): Year Amount 2026 $ 171,479 2027 152,036 2028 148,201 2029 144,876 2030 9,441 Thereafter 90,000 $ 716,033 Note 12. Changes in Accumulated Other Comprehensive Income (Loss) The components of accumulated other comprehensive income (loss) are as follows: 65 Currency Translation Adjustment Postretirement Benefit Obligations Adjustment Changes in Fair Value of Effective Cash Flow Hedges Accumulated Other Comprehensive Income (loss) Balance at December 31, 2022 $ ( 5,098 ) $ 758 $ 143 $ ( 4,197 ) Other comprehensive income (loss) 63 184 ( 197 ) 50 Amounts reclassified from accumulated other comprehensive income (loss) — — — — Income tax expense (benefit) — ( 44 ) 47 3 Current period change 63 140 ( 150 ) 53 Balance at December 31, 2023 ( 5,035 ) 898 ( 7 ) ( 4,144 ) Other comprehensive income (loss) ( 109 ) 13,454 — 13,345 Amounts reclassified from accumulated other comprehensive income (loss) — — — — Income tax expense (benefit) — ( 3,231 ) — ( 3,231 ) Current period change ( 109 ) 10,223 — 10,114 Balance at December 31, 2024 ( 5,144 ) 11,121 ( 7 ) 5,970 Other comprehensive income (loss) 34 3,933 — 3,967 Amounts reclassified from accumulated other comprehensive income (loss) — — — — Income tax expense (benefit) — ( 948 ) 7 ( 941 ) Current period change 34 2,985 7 3,026 Balance at December 31, 2025 $ ( 5,110 ) $ 14,106 $ — $ 8,996 Note 13. Earnings Per Share The details of the earnings per share calculations for the years ended December 31, 2025, 2024 and 2023 are as follows: Years Ended December 31, 2025 2024 2023 Basic Net Income $ 49,286 $ 44,149 $ 54,623 Weighted average common shares outstanding 26,901,046 26,828,338 27,302,254 EPS – Basic $ 1.83 $ 1.65 $ 2.00 Years Ended December 31, 2025 2024 2023 Diluted Net Income $ 49,286 $ 44,149 $ 54,623 Weighted average common shares outstanding – Basic 26,901,046 26,828,338 27,302,254 Dilutive effect of unvested equity awards 426,403 426,875 705,376 Weighted average common shares outstanding – Diluted 27,327,449 27,255,213 28,007,630 EPS – Diluted $ 1.80 $ 1.62 $ 1.95 66 Diluted EPS is computed based upon the weighted average number of common shares outstanding for the year plus the dilutive effect of common stock equivalents using the treasury stock method and the average market price of our common stock for the year. The diluted EPS calculations exclude the effect of stock options when the options’ assumed proceeds exceed the average market price of the common shares during the period. For the years ended December 31, 2025, 2024 and 2023, stock options of 950,283 , 834,288 and 475,359 , respectively, were anti-dilutive and excluded from the computations of dilutive EPS. In September 2017, the Board of Directors (the "Board") adopted the AdvanSix Inc. Deferred Compensation Plan (the “DCP”), effective January 1, 2018. Pursuant to the DCP, our directors may elect to defer their cash retainer fees and allocate their deferrals to the AdvanSix stock unit fund. Each unit allocated under the stock unit fund represents the economic equivalent of one share of common stock. Units are paid out in shares of AdvanSix common stock upon distribution. As of December 31, 2025, a total of 80,850 units were allocated to the AdvanSix stock unit fund under the DCP. On May 4, 2018, the Company announced that the Board authorized a share repurchase program of up to $ 75 million of the Company’s common stock. On February 22, 2019, the Company announced that the Board authorized a share repurchase program of up to an additional $ 75 million of the Company's common stock, which was in addition to the remaining capacity available under the May 2018 share repurchase program. Repurchases may be made, from time to time, on the open market, including through the use of trading plans intended to qualify under Rule 10b5-1 of the Exchange Act of 1934, as amended. The size and timing of these repurchases will depend on pricing, market and economic conditions, legal and contractual requirements and other factors. The share repurchase program has no expiration date and may be modified, suspended or discontinued at any time. The par value of the shares repurchased is applied to Treasury stock and the excess of the purchase price over par value is applied to Additional paid in capital. During 2025, the Company had repurchased 61,660 shares of common stock, all of which were withheld to cover the tax withholding obligations in connection with the vesting awards, for an aggregate of $ 1.7 million at a weighted average market price of $ 26.90 per share. The purchase of shares reduces the weighted average number of shares outstanding in the basic and diluted earnings per share calculations. Note 14. Stock-Based Compensation Plans On September 8, 2016, prior to the Spin-Off, our Board adopted, and Honeywell, as our sole stockholder, approved, the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, and the material terms of performance-based compensation were approved by the Company's stockholders for tax purposes at our 2017 annual meeting of stockholders (the "Original Plan"). The Original Plan was amended and restated as the 2016 Stock Incentive Plan of AdvanSix Inc. and its Affiliates, as Amended and Restated, which was approved by stockholders of the Company at the Annual Meetings of Stockholders held on June 23, 2020 and subsequently on June 15, 2022 (the “Equity Plan”). As a result, no further grants will be made under the Original Plan. The Equity Plan provides for the grant of stock options, stock appreciation rights, performance awards, restricted stock units, restricted stock, other stock-based awards and non-share-based awards. The maximum aggregate number of shares of our common stock that may be issued under all stock-based awards granted under the Equity Plan is 2,594,395 , subject to adjustment in accordance with the terms of the Equity Plan. Under the Equity Plan, the shares underlying all full-value awards, including those granted to non-employee directors, will be counted against the share reserve on a 1.55 -for-one basis. Shares underlying stock option awards and SARs will be counted against the share reserve on a one -for-one basis. Under the terms of the Equity Plan, there were approximately 1,300,000 shares of AdvanSix common stock available for future grants of full-value awards at December 31, 2025. Restricted Stock Units – The Company may grant RSUs to key management employees and directors that generally vest over periods ranging from 1 to 3 years. In the event cash dividends are paid to shareholders of common stock, dividend equivalents accrue on all unvested RSUs. Dividend equivalents are subject to the same termination and vesting terms as the underlying RSU. Upon vesting, the RSUs and related dividend equivalents entitle the holder to receive one share of AdvanSix common stock for each RSU and dividend equivalent at time of vesting and are payable in AdvanSix common stock upon vesting. The fair value of all stock-settled RSUs is based upon the market price of the underlying common stock as of the grant date. The following table summarizes information about RSU activity related to the Equity Plan: 67 Number of Restricted Stock Units (In Thousands) Weighted Average Grant Date Fair Value (Per Share) Non-vested at December 31, 2022 396 $ 25.53 Granted 178 34.75 Vested ( 218 ) 15.83 Forfeited ( 19 ) 38.92 Non-vested at December 31, 2023 337 35.97 Granted 320 25.77 Vested ( 150 ) 28.52 Forfeited ( 47 ) 33.53 Non-vested at December 31, 2024 460 31.53 Granted 314 26.01 Vested ( 156 ) 32.36 Forfeited ( 85 ) 29.99 Non-vested at December 31, 2025 533 $ 28.28 As of December 31, 2025, there was approximately $ 6.3 million of total unrecognized compensation cost related to non-vested RSUs granted under the Equity Plan which is expected to be recognized over a weighted-average period of 1.1 years. The following table summarizes information about the income statement impact from RSUs for the Years Ended December 31, 2025, 2024 and 2023: Years Ended December 31, 2025 2024 2023 Compensation expense $ 6,193 $ 5,670 $ 4,049 Future income tax benefit recognized $ 2,037 $ 1,186 $ 1,107 Stock Options – The exercise price, term and other conditions applicable to each option granted under the Equity Plan are generally determined by the Compensation Committee of the Board. The exercise price of stock options is set on the grant date and may not be less than the fair market value per share of our stock on that date. The fair value is recognized as an expense over the employee’s requisite service period (generally the vesting period of the award). Options generally vest over periods ranging from 1 to 3 years. The following table summarizes information about the income statement impact from stock options for the years ended December 31, 2025, 2024 and 2023. Years Ended December 31, 2025 2024 2023 Compensation expense $ 162 $ 822 $ 1,651 Future income tax benefit recognized $ 613 $ 1,498 $ 1,215 The fair value related to stock options granted was determined using Black-Scholes option pricing model and the weighted average assumptions are shown in the table below: Years Ended December 31, Key Black-Scholes Assumptions 2025 2024 2023 Risk-free interest rate — % — % 4.1 % Expected term (years) 0 0 6 Volatility — % — % 46.5 % Dividend yield — % — % 1.4 % Fair value per stock option $ — $ — $ 18.04 The fair value of each option award is estimated on the date of grant using the Black-Scholes option pricing model. Volatility is determined based on the average volatility of peer companies with similar option terms. The expected term is determined using a 68 simplified approach, calculated as the mid-point between the vesting period and the contractual term of the award. The risk-free interest rate is determined based upon the yield of an outstanding U.S. Treasury note with a term equal to the expected term of the option granted. No stock options were awarded during 2025. The following table summarizes information about stock option activity related to the Equity Plan: Number of Shares (In Thousands) Weighted Average Exercise Price (Per Share) Weighted Average Remaining Contractual Term (Years) Aggregate Intrinsic Value Outstanding at December 31, 2022 883 27.97 6.81 $ 8,870 Exercisable at December 31, 2022 578 $ 27.49 6.06 $ 6,082 Granted 86 41.15 Exercised ( 9 ) 28.14 Forfeited — — Expired ( 3 ) 33.27 Outstanding at December 31, 2023 957 29.26 6.17 $ 4,446 Exercisable at December 31, 2023 728 $ 26.47 5.46 $ 4,412 Granted — — Exercised ( 24 ) 17.96 Forfeited ( 8 ) 40.43 Expired ( 8 ) 36.12 Outstanding at December 31, 2024 917 29.40 5.16 $ 3,536 Exercisable at December 31, 2024 828 $ 28.20 4.87 $ 3,536 Granted — — Exercised ( 17 ) 14.29 Forfeited ( 5 ) 40.42 Expired ( 65 ) 34.38 Outstanding at December 31, 2025 830 29.25 4.18 $ 654 Exercisable at December 31, 2025 805 $ 28.86 4.08 $ 654 The aggregate intrinsic values in the table above represent the total pre-tax intrinsic value (the difference between the Company’s closing stock price on the last trading day of the year and the exercise price, multiplied by the number of in-the-money options) that would have been received had all option holders exercised their in-the-money options at year-end. The amount changes based on the fair market value of the Company’s stock. As of December 31, 2025, there was no unrecognized stock-based compensation expense related to stock options that is expected to be recognized over a weighted average period of approximately 0.2 years. Performance Stock Units – The Company may issue PSUs to key senior management employees which, upon vesting, convert one -for-one to AdvanSix common stock. In the event cash dividends are paid to shareholders of common stock, dividend equivalents will accrue on all unvested PSUs. Dividend equivalents are subject to the same termination, vesting and performance terms as the underlying PSU award. The actual number of shares an employee receives for each PSU and related dividend equivalent depends on the Company’s performance against certain metrics, including cumulative Earnings Per Share and average annual Return on Investment goals over three-year performance and vesting periods. Commencing with the 2021 awards, a market-based factor has the potential to increase or decrease the performance award by 10 %. This metric is calculated based upon how the Company's Total Shareholder Return compared to that of its peer group over the vesting period. Each grantee is granted a target level of PSUs and may earn between 0 % and 200 % of the target level depending on the Company’s performance against the financial goals. 69 The following table summarizes information about PSU activity related to the Equity Plan: Number of Performance Stock Units (In Thousands) Weighted Average Grant Date Fair Value (Per Share) Non-vested at December 31, 2022 395 $ 23.04 Granted 93 42.63 Vested ( 193 ) 14.29 Forfeited ( 1 ) 38.84 Non-vested at December 31, 2023 294 37.77 Granted 144 28.00 Vested ( 108 ) 30.37 Forfeited ( 33 ) 35.86 Non-vested at December 31, 2024 297 35.95 Performance adjustment ( 83 ) 41.67 Granted 143 29.85 Vested — — Forfeited ( 41 ) 32.60 Non-vested at December 31, 2025 316 $ 32.14 The fair value of the PSUs is principally based on the fair market value of the Company’s stock at the grant date. The number of underlying shares to be issued will be based on actual performance achievement over the performance period. The accrual of compensation costs is based on our estimate of the probable expected value of the award. The fair value of each PSU grant is amortized monthly into compensation expense on a straight-line basis over a vesting period of 36 months. Changes in expected probable value are recorded as compensation expense on a catch-up basis in the month in which the change is identified. Any remaining balance is amortized monthly into compensation expense on a straight-line basis over the remaining vesting period. The Company assumes that forfeitures will be minimal, and estimates forfeitures at time of issuance, which results in a reduction in compensation expense. As the payout of PSUs includes dividend equivalents, no separate dividend yield assumption is required in calculating the fair value of the PSUs. The Company initiated a dividend during the fourth quarter of 2021. As of December 31, 2025, there was approximately $ 3.7 million of total unrecognized compensation cost related to non-vested PSUs granted under the Equity Plan which is expected to be recognized over a weighted-average period of 1.3 years. The following table summarizes information about the income statement impact from PSUs for the year ended December 31, 2025, 2024 and 2023. Years Ended December 31, 2025 2024 2023 Compensation expense $ 368 $ 1,411 $ 2,612 Future income tax benefit recognized $ 148 $ 216 $ 703 Note 15. Goodwill and Intangible Assets Intangible assets with finite lives acquired through a business combination are recorded at fair value, less accumulated amortization. Customer relationships and trade-names are amortized on a straight-line basis over their expected useful lives of 15 to 20 years and 5 years, respectively. Goodwill There was no change in the carrying amount of goodwill for the year ended December 31, 2025. Finite-Lived Intangible Assets Intangible assets subject to amortization were as follows: 70 December 31, 2025 December 31, 2024 Gross Carrying Amount Accumulated Amortization Net Book Value Gross Carrying Amount Accumulated Amortization Net Book Value Customer relationships $ 36,820 $ ( 7,572 ) $ 29,248 $ 36,820 $ ( 5,666 ) $ 31,154 Licenses 18,451 ( 7,842 ) 10,609 18,451 ( 6,919 ) 11,532 Trade names 1,100 ( 862 ) 238 1,100 ( 642 ) 458 Total $ 56,371 $ ( 16,276 ) $ 40,095 $ 56,371 $ ( 13,227 ) $ 43,144 For each of the years ended December 31, 2025 and 2024, the Company recorded amortization expense on intangible assets of $ 3.0 million. The estimated aggregate amortization expense for each of the next five years is as follows: Year Amount 2026 $ 3,049 2027 2,866 2028 2,829 2029 2,829 2030 2,829 Note 16. Supplier Finance Programs The Company has entered into a supply chain finance program with a financial intermediary providing participating suppliers the option to be paid by the intermediary earlier than the original invoice due date. AdvanSix’s responsibility is limited to making payments to the intermediary based upon payment terms negotiated with the suppliers, regardless of whether the intermediary pays the supplier in advance of the original due date. The Company’s payment terms with suppliers are consistent, regardless of whether a vendor participates in the supply chain finance program or not. All related agreements are terminable by either party upon at least 30 days’ notice. The total amount due to the financial intermediaries to settle supplier invoices under all of its supplier finance programs at December 31, 2025 and 2024, are as follows (in thousands): December 31, 2025 2024 Confirmed obligations outstanding at the beginning of the period $ 19,155 $ 17,076 Invoices confirmed during the period 51,992 62,933 Confirmed invoices paid during the period ( 62,154 ) ( 60,854 ) Confirmed obligations outstanding at the end of the period $ 8,993 $ 19,155 These amounts outstanding are included in Accounts payable . Note 17. Segment Related Information The Company has concluded that it is a single operating segment and a single reportable segment: chemical manufacturing. Its larger manufacturing sites are vertically integrated and leverage cross-plant resources, including centralized supply chain and procurement functions. This production process uses one key raw material, cumene, as the input to products produced for sale through the sales channels and end markets the Company serves. Production rates and output volumes are managed across locations to align with the Company’s overall operating plan. Additionally, the Company’s operating results, which are evaluated regularly to make decisions about resource allocation and performance assessment by the CODM, our CEO and President, are on a consolidated basis. The chemical manufacturing segment derives its revenues by innovating and delivering essential products in the industries of nylon solutions, plant nutrients, and chemical intermediates to its customers in a wide variety of end markets and applications, such as building and construction, fertilizers, agrochemicals, plastics, solvents, packaging, paints, coatings, adhesives and electronics. The CODM’s performance assessment and resource allocation for the chemical manufacturing segment is based on net income which is also reported on the income statement as net income, the measure of segment assets which is also reported on the balance sheet as total assets, and capital expenditures which is also reported in the statement of cash flows. 71 The CODM uses net income generated from segment assets in deciding whether to reinvest profits into the segment or into other parts of the entity, such as for acquisitions or to pay dividends. The CODM also uses net income to monitor budget versus actual results. Monitoring budgeted versus actual results is used in assessing performance of the segment and in establishing management’s compensation. Lastly, the CODM uses capital expenditures to estimate the cash-generating potential and cash requirements of the segment. Significant expense information reviewed by the CODM was as follows (in thousands): Years Ended December 31, 2025 2024 2023 Revenue $ 1,522,233 $ 1,517,557 $ 1,533,599 Less: Variable costs of goods sold * 663,871 691,300 711,169 Plant costs 500,596 487,671 470,457 Freight and distribution costs 184,172 176,849 177,095 Selling, general, and administrative expense 104,750 94,023 95,538 Other segment items ** 19,558 23,565 24,717 Segment net income $ 49,286 $ 44,149 $ 54,623 *Variable costs of goods sold includes the raw material costs associated with volumes sold during the period as well as insurance settlement proceeds, when applicable. **Other segment items include research and development expense, interest income and expense, capitalized interest, other non-operating expense, and income tax expense. Note 18. Subsequent Events As announced on February 20, 2026, the Board declared a quarterly cash dividend of $ 0.16 per share on the Company's common stock, payable on March 23, 2026 to stockholders of record as of the close of business on March 9, 2026. 72 Item 9. Changes in and Disagreements with Accountants on Accounting and Financial Disclosure Not Applicable.