Subramanian Kals 4

4 · CarParts.com, Inc. · Filed Jan 20, 2026

Form 4

Period: 2026-01-16

Chief Technology Officer

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-01-16+39,167→ 324,523 total
Exercise/Conversion
Common Stock
[F2]
2026-01-16+18,750→ 343,273 total
Exercise/Conversion
Restricted Stock Units
[F1][F3]
2026-01-16−39,167→ 39,167 total
→ Common Stock (39,167 underlying)
Exercise/Conversion
Restricted Stock Units
[F2][F3]
2026-01-16−18,750→ 0 total
→ Common Stock (18,750 underlying)

Footnotes (3)

[F1]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.
[F2]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.
[F3]Not applicable.

Signature

/s/ Kals Subramanian|2026-01-20

Documents

1 file