X0508 4 2026-01-16 0001378950 CarParts.com, Inc. PRTS 0001956633 Huffaker Michael 2050 W. 190TH STREET, SUITE 400 TORRANCE CA 90504 true Chief Operating Officer false Common Stock 2026-01-16 4 M 0 43630 0 A 447314 D Common Stock 2026-01-16 4 M 0 18750 0 A 466064 D Restricted Stock Units 2026-01-16 4 M 0 43630 0 D Common Stock 43630 43630 D Restricted Stock Units 2026-01-16 4 M 0 18750 0 D Common Stock 18750 0 D The Restricted Stock Units (RSU) were granted to the Reporting Person on January 16, 2024 pursuant to the CarParts.com, Inc. 2016 Equity Incentive Plan. Thirty-three and a third percent of the shares of stock subject to the RSU vested on January 16, 2026, the second anniversary of the grant date, and the remainder of the shares subject to the RSU will vest on the next, and thus last, anniversary of the grant date, subject to such Reporting Person's service to the Company through such date. The Restricted Stock Units (RSUs) were granted to the Reporting Person on January 16, 2024 pursuant to the CarParts.com, Inc. 2016 Equity Incentive Plan. Fifty percent of the RSUs vested on the first anniversary of the grant date on January 16, 2025, and the remainder of the RSUs vested in equal installments each quarter thereafter, including herein on January 16, 2026, the second anniversary of the grant date and final vesting. Not applicable. /s/ Michael Huffaker 2026-01-20