(Mark One) QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 For the quarterly period ended March31, 2026 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934 For the transition period fromtoCommission file number 1-10258 Tredegar Corporation(Exact Name of Registrant as Specified in Its Charter) Virginia(State or Other Jurisdiction ofIncorporation or Organization) 1100 Boulders ParkwayRichmond, Virginia(Address of Principal Executive Offices) Securities registered pursuant to Section 12(b) of the Act: Title of each classTrading Symbol(s)Name of each exchange on which registeredCommon stock, no par valueTGNew York Stock Exchange Indicate by check mark whether the registrant (1)has filed all reports required to be filed by Section13 or 15(d) of the Securities Exchange Actof 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject tosuch filing requirements for the past 90 days.YesNo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant toRule 405 of Regulation S-T (232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required tosubmit such files).YesNo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reportingcompany, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and“emerging growth company” in Rule 12b-2 of the Exchange Act. LargeacceleratedfilerAccelerated filerSmallerreportingcompanyNon-accelerated filerEmerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complyingwith any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Exchange Act).Yes☐No The number of shares of Common Stock, no par value, outstanding as of May1, 2026: 35,016,819 Tredegar CorporationTable of Contents Part IFinancial InformationItem1.Financial StatementsCondensed Consolidated Balance Sheets (unaudited)Condensed Consolidated Statements of Income (Loss) (unaudited)Condensed Consolidated Statements of Comprehensive Income (Loss) (unaudited)Condensed Consolidated Statements of Cash Flows (unaudited)Condensed Consolidated Statements of Shareholders' Equity (unaudited)Notes to the Condensed Consolidated Financial Statements (unaudited)Item2.Management's Discussion and Analysis of Financial Condition and Results of OperationsItem3.Quantitative and Qualitative Disclosures About Market RiskItem4.Controls and Procedures PartIIOther InformationItem 1A.Risk FactorsItem 5.Other InformationItem6.Exhibits Tredegar CorporationCondensed Consolidated Statements of Income (Loss)(In Thousands, Except Per Share Data)(Unaudited) See accompanying notes to the condensed consolidated financial statements. Tredegar CorporationCondensed Consolidated Statements of Shareholders’ Equity(In Thousands, Except Share and Per Share Data)(Unaudited) See accompanying notes to the condensed consolidated financial statements. TREDEGAR CORPORATIONNOTES TO THE CONDENSED CONSOLIDATED FINANCIAL STATEMENTS(Unaudited) 1. BASIS OF PRESENTATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Tredegar Corporation is engaged, through its subsidiaries, in the manufacture of aluminum extrusions and polyethylene andpolypropylene plastic films. Unless the context requires otherwise, all references herein to “Tredegar,” “the Company,” “we,” “us” or“our” are to Tredegar Corporation and its consolidated subsidiaries. In the opinion of management, the accompanying condensedconsolidated financial statements of the Company contain all adjustments necessary to state fairly, in all material respects, Tredegar’scondensed consolidated financial position as of March31, 2026, the condensed consolidated results of operations for the three monthsended March31, 2026 and 2025, the condensed consolidated cash flows for the three months ended March31, 2026 and 2025, and thecondensed consolidated changes in shareholders’ equity for the three months ended March31, 2026 and 2025, in accordance with U.S.generally accepted accounting principles (“GAAP”). All such adjustments, unless otherwise detailed in the notes to the condensedconsolidated financial statements, are deemed to be of a normal, recurring nature. The Company operates on a calendar fiscal year except for the Aluminum Extrusions segment, which operates on a 52/53-weekfiscal year basis.As such, the fiscal first quarter for 2026 and 2025 for this segment references 13-week periods ended March 29,2026 and