CarParts.com (PRTS) CTO reports RSU vesting into common shares

Rhea-AI Filing Summary

CarParts.com, Inc. Chief Technology Officer Kals Subramanian reported the vesting and settlement of previously granted restricted stock units into common stock on January 16, 2026 under the company’s 2016 Equity Incentive Plan.

One RSU grant from January 16, 2024 delivered 39,167 shares of common stock as one-third of that award vested on the second anniversary of the grant, with the remaining portion scheduled to vest on the next and final anniversary, subject to continued service. A second 2024 RSU grant delivered 18,750 shares of common stock upon final vesting on the same date.

Both RSU conversions were reported at a price of $0 per share, reflecting the nature of RSU settlements rather than open-market purchases. Following these transactions, Subramanian directly owned 343,273 shares of CarParts.com common stock.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Subramanian Kals

(Last) (First) (Middle)

2050 W. 190TH STREET, SUITE 400

(Street)

TORRANCE CA 90504

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
CarParts.com, Inc. [ PRTS ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Technology Officer

3. Date of Earliest Transaction (Month/Day/Year)
01/16/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	01/16/2026		M(1)		39,167	A	$0	324,523	D
Common Stock	01/16/2026		M(2)		18,750	A	$0	343,273	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units(1)	(3)	01/16/2026		M			39,167	(3)	(3)	Common Stock	39,167	$0	39,167	D
Restricted Stock Units(2)	(3)	01/16/2026		M			18,750	(3)	(3)	Common Stock	18,750	$0	0	D

Explanation of Responses:

1. 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.

2. 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.

3. Not applicable.

	/s/ Kals Subramanian	01/20/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transaction did CarParts.com (PRTS) report for its CTO?

CarParts.com reported that Chief Technology Officer Kals Subramanian settled previously granted restricted stock units (RSUs) into shares of common stock on January 16, 2026 under the company’s 2016 Equity Incentive Plan.

How many CarParts.com (PRTS) shares did the CTO receive from RSU vesting?

On January 16, 2026, one RSU grant delivered 39,167 shares of common stock and another grant delivered 18,750 shares of common stock, all as part of scheduled RSU vesting.

What is the vesting schedule of the CTO’s CarParts.com RSUs reported here?

For the first RSU grant dated January 16, 2024, 33⅓% vested on January 16, 2026, with the remainder vesting on the next and final anniversary, subject to continued service. For the second 2024 RSU grant, 50% vested on January 16, 2025 and the balance vested in quarterly installments through January 16, 2026, which was the final vesting.

At what price were the CarParts.com RSUs converted into common stock?

Both RSU settlements into CarParts.com common stock were reported at an exercise or conversion price of $0 per share, which is typical for RSU vesting rather than market purchases.

How many CarParts.com (PRTS) shares does the CTO own after these transactions?

After the reported RSU vesting and settlement transactions on January 16, 2026, Kals Subramanian directly owned 343,273 shares of CarParts.com common stock.

Were these CarParts.com CTO transactions direct or indirect holdings?

The filing shows that the resulting holdings of CarParts.com common stock and the RSU positions reported after the transactions are held directly (D) by Kals Subramanian, with no indirect ownership nature indicated.