Sec Form 4 Filing - Black David Scott @ MALIBU BOATS, INC. - 2023-11-06

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 Black David Scott 2. Issuer Name and Ticker or Trading Symbol MALIBU BOATS, INC. [ MBUU] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Interim CFO (Last) (First) (Middle) 5075 KIMBERLY WAY 3. Date of Earliest Transaction (MM/DD/YY) 11/06/2023 (Street) LOUDON, TN37774 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 Class A Common Stock 11/06/2023 F( 1 ) 52 D $ 46.65 1,734 ( 2 ) D Class A Common Stock 11/06/2023 F( 3 ) 48 D $ 46.65 1,686 ( 2 ) D Class A Common Stock 11/06/2023 F( 4 ) 36 D $ 46.65 1,650 ( 2 ) D Class A Common Stock 11/06/2023 F( 5 ) 19 D $ 46.65 1,631 ( 2 ) D Class A Common Stock 11/06/2023 A( 6 ) 2,162 A $ 0 3,793 ( 2 ) 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Black David Scott 5075 KIMBERLY WAY LOUDON, TN37774 Interim CFO Signatures DAVID S. BLACK, /s/ Matthew M. Googe as attorney-in-fact 11/08/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 213 shares under a restricted stock unit award granted on November 3, 2020. ( 2 )Includes 196 restricted stock units vesting on November 6, 2024, 231 restricted stock units vesting in three substantially equal semi-annual installments beginning on May 6, 2024, 573 restricted stock units vesting in four substantially equal semi-annual installments beginning on May 6, 2024 and 2,162 restricted stock units vesting in six substantially equal semi-annual installments beginning on May 6, 2024 ( 3 )The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 196 shares under a restricted stock unit award granted on November 3, 2021. ( 4 )The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 78 shares under a restricted stock unit award granted on May 6, 2022. ( 5 )The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 144 shares under a restricted stock unit award granted on November 3, 2022. ( 6 )The reporting person was issued an equity award of 2,162 stock units on November 6, 2023, vesting in six substantially equal semi-annual installments beginning on May 6, 2024, in consideration of services performed for the Issuer in fiscal 2023.

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).

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