Malibu Boats CFO reports tax RSU share withholdings

Malibu Boats, Inc. Chief Financial Officer David Scott Black reported routine tax-related share withholdings tied to vesting of restricted stock units.

Rhea-AI Filing Summary

Malibu Boats, Inc. Chief Financial Officer David Scott Black reported routine tax-related share withholdings tied to vesting of restricted stock units. On May 6, 2026, a total of 1,282 shares of Class A Common Stock were disposed of at $25.00 per share under transaction code F, which reflects shares withheld to satisfy tax liabilities rather than open-market sales.

Footnotes explain that these withholdings occurred in connection with the vesting of 360 shares from a grant dated November 6, 2023, 2,921 shares from a grant dated May 6, 2024, 331 shares from a grant dated November 4, 2024, and 1,254 shares from a grant dated November 21, 2025.

Insider Trade Summary

Exercise Price or Tax Liability: 1,282 shares

Exercise Price or Tax Liability 4 txns

Insider Black David Scott

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise Price or Tax Liability	Class A Common Stock	107	$25.00	$3K
Exercise Price or Tax Liability	Class A Common Stock	788	$25.00	$20K
Exercise Price or Tax Liability	Class A Common Stock	81	$25.00	$2K
Exercise Price or Tax Liability	Class A Common Stock	306	$25.00	$8K

Holdings After Transaction: Class A Common Stock — 26,156 shares (Direct)

Footnotes (4)

1. F1. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 360 shares under a restricted stock unit award granted on November 6, 2023.
2. F2. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 2,921 shares under a restricted stock unit award granted on May 6, 2024.
3. F3. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 331 shares under a restricted stock unit award granted on November 4, 2024.
4. F4. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 1,254 shares under a restricted stock unit award granted on November 21, 2025.

Key Figures

Tax-withholding shares: 1,282 shares Withholding price: $25.00 per share Transaction 1 shares: 306 shares +4 more

7 metrics

Tax-withholding shares 1,282 shares Total shares withheld for taxes on May 6, 2026

Withholding price $25.00 per share Price used for all tax-withholding dispositions

Transaction 1 shares 306 shares Class A Common Stock withheld under code F

Transaction 2 shares 81 shares Class A Common Stock withheld under code F

Transaction 3 shares 788 shares Class A Common Stock withheld under code F

Transaction 4 shares 107 shares Class A Common Stock withheld under code F

RSU vesting amount 2,921 shares Shares vesting from May 6, 2024 RSU grant

Key Terms

restricted stock unit, tax withholding purposes, Class A Common Stock, Form 4

4 terms

restricted stock unit financial

"in connection with the vesting of 360 shares under a restricted stock unit award"

A restricted stock unit is a promise from a company to give an employee shares of stock after certain conditions are met, like staying with the company for a set amount of time. It’s like earning a bonus that turns into company stock once you’ve proven your commitment, making it a way to motivate and reward employees.

tax withholding purposes financial

"shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection"

Class A Common Stock financial

"The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

Form 4 regulatory

"INSIDER FILING DATA (Form 4):"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider activity did Malibu Boats (MBUU) CFO David Scott Black report?

Malibu Boats CFO David Scott Black reported tax-related share dispositions, not open-market trades. On May 6, 2026, 1,282 shares of Class A Common Stock were withheld at $25.00 per share to cover tax obligations arising from restricted stock unit vesting.

Were the MBUU insider transactions open-market sales of stock?

No, the reported MBUU insider transactions were not open-market sales. They were Form 4 code F transactions, meaning shares of Class A Common Stock were withheld at $25.00 per share solely to satisfy tax liabilities from restricted stock unit vesting.

How many Malibu Boats (MBUU) shares were withheld for taxes in this Form 4?

A total of 1,282 Malibu Boats Class A Common Stock shares were withheld for taxes. These code F transactions occurred on May 6, 2026 at $25.00 per share and reflect tax-withholding dispositions linked to multiple restricted stock unit awards.

Which restricted stock unit (RSU) awards are referenced in the Malibu Boats CFO filing?

The filing references RSU awards granted on November 6, 2023, May 6, 2024, November 4, 2024, and November 21, 2025. Shares from these awards vested, and a portion of the resulting Class A Common Stock was withheld to cover associated tax obligations.

Does this Malibu Boats (MBUU) Form 4 indicate a change in the CFO’s investment view?

The Form 4 reflects routine tax-withholding dispositions rather than discretionary buying or selling. All four transactions use code F, meaning shares were withheld to satisfy tax liabilities on vesting RSUs, which generally carries limited information about the executive’s investment outlook.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 05/07/2026 - 08:30 AM Learn about SEC filing dates

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^*

Black David Scott

(Last) (First) (Middle)

5075 KIMBERLY WAY

(Street)

LOUDON TENNESSEE 37774

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief Financial Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/06/2026

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)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	05/06/2026		F(1)		107	D	$25	27,331	D
Class A Common Stock	05/06/2026		F(2)		788	D	$25	26,543	D
Class A Common Stock	05/06/2026		F(3)		81	D	$25	26,462	D
Class A Common Stock	05/06/2026		F(4)		306	D	$25	26,156	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

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 360 shares under a restricted stock unit award granted on November 6, 2023.

2. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 2,921 shares under a restricted stock unit award granted 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 331 shares under a restricted stock unit award granted on November 4, 2024.

4. The shares of the Issuer's Class A Common Stock were withheld for tax withholding purposes in connection with the vesting of 1,254 shares under a restricted stock unit award granted on November 21, 2025.

Remarks:

	David S. Black, /S/ Brooke Zinter as attorney-in-fact	05/07/2026
	** 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)