CarParts.com (PRTS) director Lisa Costa awarded 186,717 cash-settled RSUs

Filing Impact

(Neutral)

Filing Sentiment

(Neutral)

Form Type

Rhea-AI Filing Summary

Costa Lisa reported acquisition or exercise transactions in this Form 4 filing.

CarParts.com director Lisa Costa received a compensation grant of 186,717 cash-settled restricted stock units (RSUs). Each RSU represents a right to receive cash equal to the fair market value of one share of common stock on the vesting date. The RSUs vest on the 2027 annual shareholder meeting date, provided her service with the company continues through that time. Following this grant, she holds 186,717 RSUs directly.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Costa Lisa

Role null

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	186,717	$0.00	--

Holdings After Transaction: Restricted Stock Units — 186,717 shares (Direct, null)

Footnotes (1)

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Key Figures

RSUs granted: 186,717 RSUs RSUs outstanding after grant: 186,717 RSUs Exercise/Conversion price: $0.00 per unit +1 more

4 metrics

RSUs granted 186,717 RSUs Grant of cash-settled restricted stock units to director

RSUs outstanding after grant 186,717 RSUs Total RSUs held directly by Lisa Costa following transaction

Exercise/Conversion price $0.00 per unit Cash-settled RSUs granted at no exercise price

Vesting condition 2027 annual shareholder meeting date RSUs vest if service continues through that meeting

Key Terms

Restricted Stock Units, cash-settled RSUs, fair market value, vesting date, +1 more

5 terms

Restricted Stock Units financial

"Reflects cash-settled RSUs. Each RSU represents a contingent right to receive an amount in cash"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

cash-settled RSUs financial

"Reflects cash-settled RSUs. Each RSU represents a contingent right to receive an amount in cash"

fair market value financial

"equal to the fair market value of one share of the Issuer's common stock"

The price a willing buyer and a willing seller would agree on for an asset or security when neither is under pressure and both have access to the same information. Think of it as the market’s neutral estimate of what something is worth, like the price two neighbors would settle on for a car after comparing similar listings. Investors care because fair market value guides buying and selling decisions, tax reporting, portfolio valuation, and how accurately company assets are reflected in financial statements.

vesting date financial

"equal to the fair market value of one share ... on the applicable vesting date"

annual shareholder meeting financial

"The RSUs shall vest on the 2027 annual shareholder meeting date"

A yearly gathering where a company’s owners (shareholders) and its leaders meet to review performance, approve key decisions like electing directors, and vote on issues such as executive pay or major policy changes. Think of it as an annual town hall for people who own part of the business: investors use it to ask questions, influence direction through votes, and gauge management’s plans and transparency, all of which can affect the stock’s outlook.

Form 4 Insider Transactions: What Each Field Means →

05/19/2026 - 08:18 PM

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^*

Costa Lisa

(Last)

(First)

(Middle)

C/O CARPARTS.COM, INC.

4910 AIRPORT PLAZA DRIVE, SUITE 300

(Street)

LONG BEACH

CALIFORNIA

90815

(City)

(State)

(Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/19/2026

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

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

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

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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)

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)
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)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
Restricted Stock Units	⁽¹⁾	05/19/2026		A		186,717		⁽¹⁾	⁽¹⁾	Common Stock	186,717	$0	186,717	D

Explanation of Responses:

1. Reflects cash-settled RSUs. Each RSU represents a contingent right to receive an amount in cash equal to the fair market value of one share of the Issuer's common stock on the applicable vesting date. The RSUs shall vest on the 2027 annual shareholder meeting date, as long as the Reporting Person's service with the Company has not previously ended.

	/s/ Lisa Costa	05/19/2026
	** 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.
* Form 4: SEC 1474 (03-26)

Source: View Original Filing on SEC EDGAR

FAQ

What did CarParts.com (PRTS) director Lisa Costa report in this Form 4?

Lisa Costa reported receiving 186,717 cash-settled restricted stock units as compensation. These RSUs are linked to CarParts.com common stock value but pay out in cash, not shares, if they vest as scheduled.

How many RSUs did Lisa Costa receive from CarParts.com (PRTS)?

She received 186,717 restricted stock units in this award. Each RSU represents a right to a cash amount equal to one share’s fair market value on the vesting date, assuming service conditions are satisfied.

When do Lisa Costa’s CarParts.com (PRTS) RSUs vest?

The RSUs are scheduled to vest on the 2027 annual shareholder meeting date. Vesting requires that Lisa Costa’s service with CarParts.com continues through that meeting, making this a time-based, service-contingent award.

Are Lisa Costa’s CarParts.com (PRTS) RSUs settled in stock or cash?

These restricted stock units are explicitly described as cash-settled RSUs. Upon vesting, each RSU pays an amount in cash equal to the fair market value of one share of CarParts.com common stock on the applicable vesting date.

Did Lisa Costa buy or sell CarParts.com (PRTS) shares in this Form 4?

No open-market purchases or sales were reported. The filing only shows a grant of 186,717 cash-settled restricted stock units as compensation, with no share buying or selling activity disclosed in this transaction.