
Form10-K ☑ANNUAL REPORT PURSUANT TO SECTION13OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year endedDecember 28, 2024OR ☐TRANSITION REPORT PURSUANT TOSECTION13 OR 15(d)OF THE SECURITIES EXCHANGE ACT OF 1934For the transition period from___________to ___________ Commission file number:001-32383 BlueLinx Holdings Inc. (Exact name of registrant as specified in its charter) 77-0627356(I.R.S. EmployerIdentification No.) 30067(Zip Code) Registrant’s telephone number, including area code:770-953-7000Securities registered pursuant to Section12(b) of the Act Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule405 of the Securities Act.YesoNo☑ Indicate by check mark if the registrant is not required to file reports pursuant to Section13 or Section15(d) of the Act.YesoNo☑ 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 Act of 1934 during thepreceding 12months (or for such shorter period that the registrant was required to file such reports), and (2)has been subject to such filing requirements for the past90days.Yes☑Noo Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule405 of RegulationS-T(§232.405 of this chapter) during the preceding 12months (or for such shorter period that the registrant was required to submit such files).Yes☑Noo Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerginggrowth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule12b-2 of theExchange Act. Large accelerated filer☑Accelerated filer☐Non-accelerated filer☐Smaller reporting company☐Emerging growth company☐ If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revisedfinancial accounting standards provided pursuant to Section 13(a) of the Exchange Act.☐ Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control overfinancial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report.☑ If securities are registered pursuant to Section 12(b) of registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of theregistrant included in the fling reflect the correction of an error to previously issued financial statements.☐ Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of theregistrant’s executive officers during the relevant recovery period pursuant to §232.10D-1(b).☐ Indicate by check mark whether the registrant is a shell company (as defined in Rule12b-2 of the Act).Yes☐ The aggregate market value of the registrant’s common stock held by non-affiliates of the registrant as of June 29, 2024, was $785,683,882, based on the closing priceon the New York Stock Exchange of $93.09 per share on June28, 2024. As of February14, 2025, the registrant had8,294,928shares of common stock outstanding. DOCUMENTS INCORPORATED BY REFERENCE Specifically identified portions of Part III of this Annual Report on Form 10-K incorporate by reference to the registrant’s definitive Proxy Statement for the 2025annual meeting of shareholders, to be filed with the Securities and Exchange Commission within 120 days of the close of the fiscal year ended December28, 2024. BLUELINX HOLDINGS INC.ANNUAL REPORT ON FORM10-KFor the fiscal year ended December28, 2024 TABLE OF CONTENTS PART I BusinessRisk FactorsUnresolved Staff CommentsCybersecurityPropertiesLegal ProceedingsMine Safety Disclosures ITEM 1ITEM 1AITEM 1BITEM 1CITEM 2ITEM 3ITEM 4 PART II Market for Registrant’s Common Equity, Related Stockholder Matters, and Issuer Purchases of EquitySecurities24[Reserved]25Management’s Discussion and Analysis of Financial Condition and Results of Operations26Quantitative and Qualitative Disclosures about Market Risk36Financial Statements and Supplementary Data37Changes in and DisagreementsWithAccountants on Accounting and Financial Disclosure75Controls and Procedures75Other Information77Disclosure Regarding Foreign Jurisdictions that Prevent Inspections77 ITEM 5 ITEM 6ITEM 7ITEM 7AITEM 8ITEM 9ITEM 9AITEM 9BITEM 9C PART III Directors, Executive Officers, and Corporate Governance78Executive Compensation78Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters78Certain Relationships and Related Transactions, and Director Inde