X0306 4 2021-03-09 0 0001378950 CarParts.com, Inc. PRTS 0001761840 Peker Lev 2050 W. 190TH STREET, SUITE 400 TORRANCE CA 90504 1 1 0 0 Chief Executive Officer Common Stock 2021-03-09 4 A 0 494339 0 A 691293 D Common Stock 2021-03-10 4 A 0 494339 0 A 1185632 D Common Stock 38869 I By IRA Common Stock 56000 I By Spouse's IRA On December 30, 2019, the Reporting Person was granted a number of performance-vesting restricted stock shares, with the payout ranging from 0 to 200% of target based on the Company's 2020 Adjusted EBITDA achievement ("performance criteria"). Following certification by the Compensation Committee of the Issuer of the applicable payout, the Reporting Person vested 555,660 (1/2 on March 9, 2021 and 1/2 on March 10, 2021) of the shares, and because the performance criteria has been satisfied, an additional 433,018 shares (out of the total shares reported above) will vest in quarterly installments over the following 2 years provided the reporting person remains an employee of the Company through such dates. /s/ Lev Peker 2021-03-11