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CarParts.com (PRTS) COO discloses RSU vesting and tax share withholding

Filing Impact
(Neutral)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

CarParts.com Chief Operating Officer Michael Huffaker reported the vesting and settlement of restricted stock units. On December 5, 2025, 36,667 RSUs granted on December 5, 2022 vested and were converted into the same number of common shares at an exercise price of $0 under the company’s 2016 Equity Incentive Plan, bringing his direct holdings to 330,565 shares.

On December 8, 2025, 23,547 of these common shares were withheld by the company at $0.44 per share to satisfy tax withholding obligations arising from the RSU settlement. After these transactions, Huffaker directly owned 307,018 shares of CarParts.com common stock.

Positive

  • None.

Negative

  • None.
Insider Huffaker Michael
Role Chief Operating Officer
Type Security Shares Price Value
Tax Withholding Common Stock 23,547 $0.44 $10K
Exercise Restricted Stock Units 36,667 $0.00 --
Exercise Common Stock 36,667 $0.00 --
Holdings After Transaction: Common Stock — 307,018 shares (Direct); Restricted Stock Units — 0 shares (Direct)
Footnotes (1)
  1. The Restricted Stock Units (RSU) were granted to the Reporting Person on December 5, 2022 under 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 December 5, 2025, the third, and last, anniversary of the grant date. Represents shares of common stock that have been withheld by the Company to satisfy tax withholding obligations in connection with the net settlement of vested Restricted Stock Units. Not applicable.
Form 4 Insider Transactions: What Each Field Means →
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
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
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*
Huffaker Michael
(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 Operating Officer
3. Date of Earliest Transaction (Month/Day/Year)
12/05/2025
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 12/05/2025 M(1) 36,667 A $0 330,565 D
Common Stock 12/08/2025 F(2) 23,547 D $0.44 307,018 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 (3) 12/05/2025 M 36,667 (1) (1) Common Stock 36,667 $0 0 D
Explanation of Responses:
1. The Restricted Stock Units (RSU) were granted to the Reporting Person on December 5, 2022 under 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 December 5, 2025, the third, and last, anniversary of the grant date.
2. Represents shares of common stock that have been withheld by the Company to satisfy tax withholding obligations in connection with the net settlement of vested Restricted Stock Units.
3. Not applicable.
/s/ Michael Huffaker 12/08/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

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

The Chief Operating Officer, Michael Huffaker, reported the vesting and settlement of 36,667 restricted stock units into common shares on December 5, 2025, followed by share withholding to cover taxes.

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

On December 5, 2025, 36,667 restricted stock units vested and were converted into 36,667 shares of CarParts.com common stock at an exercise price of $0.

Why were 23,547 CarParts.com (PRTS) shares disposed of on December 8, 2025?

The 23,547 shares shown as disposed of on December 8, 2025 were withheld by the company at $0.44 per share to satisfy tax withholding obligations related to the vested restricted stock units.

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

Following the RSU vesting and the tax-related share withholding, Chief Operating Officer Michael Huffaker directly owned 307,018 shares of CarParts.com common stock.

When were the COO’s restricted stock units originally granted and under which plan?

The restricted stock units were granted on December 5, 2022 under the CarParts.com, Inc. 2016 Equity Incentive Plan, with one-third vesting on December 5, 2025, the third and final anniversary of the grant date.

Was the CarParts.com (PRTS) insider filing made by more than one reporting person?

No. The filing indicates that it is a Form filed by one reporting person, covering only Chief Operating Officer Michael Huffaker.