X0508 4 2023-08-04 0 0001301787 BlueLinx Holdings Inc. BXC 0001730821 Wamser R Andrew Jr 1950 SPECTRUM CIRCLE MARIETTA GA 30067 0 1 0 0 SVP & CHIEF FINANCIAL OFFICER 0 Restricted Stock Units 2023-08-04 4 A 0 10610 0.00 A Common Stock 10610 10610 D Restricted Stock Units 2023-08-04 4 A 0 3813 0.00 A Common Stock 3813 3813 D Each restricted stock unit represents a contingent right to receive one share of BlueLinx Holdings Inc. common stock. These are time-based restricted stock units that were granted to the Reporting Person pursuant to that certain Employment Agreement, dated July 6, 2023, between the Company and the Reporting Person. The units vest in three equal annual installments commencing on August 4, 2024. Vested shares will be delivered to the reporting person no later than 30 days after each vesting date. These are time-based restricted stock units that vest in three equal annual installments commencing on August 4, 2024. Vested shares will be delivered to the reporting person no later than 30 days after each vesting date. /s/ Kimberly Holladay, as attorney-in-fact for Andrew R. Wamser, Jr. 2023-08-08