Sec Form 4 Filing - Lee David Sung @ MOTORCAR PARTS OF AMERICA INC - 2025-09-24

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

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Lee David Sung 2. Issuer Name and Ticker or Trading Symbol MOTORCAR PARTS OF AMERICA INC [ MPAA] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) CFO (Last) (First) (Middle) 2929 CALIFORNIA STREET 3. Date of Earliest Transaction (MM/DD/YY) 09/24/2025 (Street) TORRANCE, CA90503 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 09/24/2025 M 17,421 ( 1 ) A $ 0 72,344 D Common Stock 09/24/2025 M 5,452 ( 2 ) A $ 0 77,796 D Common Stock 09/24/2025 F 12,021 ( 3 ) D $ 17.41 65,775 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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 Performance Based Stock Unit $ 0 09/24/2025 M 17,421 ( 4 ) 06/30/2026 Common Stock 17,421 $ 0 17,422 D Performance Based Stock Units $ 0 09/24/2025 M 5,452 ( 4 ) 07/31/2028 Common Stock 5,452 $ 0 10,904 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Lee David Sung 2929 CALIFORNIA STREET TORRANCE, CA90503 CFO Signatures /s/ David Lee 09/26/2025 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Shares earned under the performance based stock units (PSUs) granted on June 19, 2023. ( 2 )Shares earned under the PSUs granted on June 20, 2025. ( 3 )Used to pay taxes upon vesting of PSUs. ( 4 )These PSUs vested based on the Company achieving a 30 trading-day trailing average market closing price of at least $15 per share for the 30 trading-day period that ended on September 24, 2025.

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).

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