MarineMax holder sells 447K shares, keeps 6.1%

A shareholder group trimmed its MarineMax (HZO) stake by 447,045 shares and now reports holding about 6.1% of the company’s outstanding common stock.

Rhea-AI Filing Summary

MARINEMAX INC (HZO) is the subject of this Amendment No. 5 to a Schedule 13D filed by a group of reporting persons led by Matsuba Limited and related entities. Between August 27, 2026 and September 4, 2026, the group sold an aggregate of 447,045 shares of common stock in multiple open-market transactions at weighted average prices ranging from $52.1226 to $52.2008 per share, excluding commissions.

As of this amendment, Matsuba Limited is the record owner of 1,343,635 shares of MarineMax common stock, representing approximately 6.1% of the outstanding common stock, based on 22,086,746 shares outstanding as of July 20, 2026 as reported by the company. The other reporting persons may be deemed to beneficially own these shares through their relationships, but each disclaims beneficial ownership except to the extent of its pecuniary interest.

Key Figures

Shares sold in recent transactions: 447,045 shares Shares sold August 27, 2026: 700 shares at $52.2000 Shares sold August 31, 2026: 1,345 shares at $52.2008 +5 more

8 metrics

Shares sold in recent transactions 447,045 shares Aggregate sales between August 27, 2026 and September 4, 2026

Shares sold August 27, 2026 700 shares at $52.2000 Weighted average price per share, excluding commissions

Shares sold August 31, 2026 1,345 shares at $52.2008 Weighted average price per share, excluding commissions

Shares sold September 3, 2026 221,000 shares at $52.1226 Weighted average price per share, excluding commissions

Shares sold September 4, 2026 224,000 shares at $52.1512 Weighted average price per share, excluding commissions

Current reported holdings 1,343,635 shares Matsuba Limited’s record ownership as of Amendment No. 5

Ownership percentage 6.1% Portion of MarineMax outstanding common stock represented by 1,343,635 shares

Shares outstanding baseline 22,086,746 shares MarineMax common stock outstanding as of July 20, 2026 per Form 10-Q

Key Terms

beneficially own, dispositive power, voting power, open market, +1 more

5 terms

beneficially own regulatory

"may be deemed to directly or indirectly beneficially own such shares"

Beneficially own means having the economic rights and risks of a security—such as the right to receive dividends, sell the shares, or profit from price changes—whether or not your name appears on the official share register. Think of it like renting a car: you use it and reap the benefits even if the title lists someone else. Investors care because beneficial ownership determines who truly controls value, must be disclosed under securities rules, and can signal potential influence or trading activity that affects a stock’s price.

dispositive power regulatory

"For information on the Reporting Persons' powers to vote and dispose"

Dispositive power is the authority to decide the final outcome of an asset, legal claim, contract, or corporate action — in effect the power to dispose of or resolve something. For investors it matters because whoever holds that authority can determine who gets paid, who controls an asset or vote, and how risks and returns are allocated; think of it like holding the key that lets you lock in the winner or loser in a deal.

voting power regulatory

"For information on the Reporting Persons' powers to vote and dispose"

Voting power is the ability shareholders have to influence a company's major decisions—like electing the board, approving mergers, or changing corporate rules—based on the voting rights attached to the shares they hold. For investors it matters because greater voting power is like holding more keys to a building: it gives you a stronger say over management choices and the company’s strategy, which can affect future value and risk.

open market financial

"sold an aggregate of 447,045 shares of Common Stock in the open market"

An open market is a system where buying and selling of goods, services, or financial assets happen freely without restrictions or special controls. For investors, it means they can trade assets easily and quickly, which helps determine fair prices based on supply and demand. This environment encourages transparency and competition, making it easier to buy or sell with confidence.

Schedule 13D regulatory

"previously filed a statement on Schedule 13D to report the acquisition"

A Schedule 13D is a legal document that investors file with regulators when they buy a large enough stake in a company to potentially influence its management or decisions. It provides details about the investor’s intention, ownership stake, and plans, helping other investors understand who is gaining control and what their motives might be.

FAQ

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

What change in ownership of MARINEMAX INC (HZO) is disclosed in this Schedule 13D/A?

The reporting persons sold an aggregate of 447,045 shares of MarineMax common stock between August 27 and September 4, 2026, in multiple open-market transactions at weighted average prices slightly above $52 per share, excluding commissions.

How many MARINEMAX INC (HZO) shares does the reporting group now hold?

As of Amendment No. 5, Matsuba Limited is the record owner of 1,343,635 shares of MarineMax common stock. The filing states this position represents approximately 6.1% of the company’s outstanding common stock.

What percentage of MARINEMAX INC (HZO) does the reporting group beneficially own?

The filing reports that 1,343,635 shares represent approximately 6.1% of MarineMax’s outstanding common stock, based on 22,086,746 shares outstanding as of July 20, 2026, as reported in MarineMax’s Form 10-Q filed July 23, 2026.

On which dates did the MARINEMAX INC (HZO) shareholder group sell shares and at what prices?

The group sold shares on August 27, 2026 (700 shares at a weighted average $52.2000), August 31, 2026 (1,345 shares at $52.2008), September 3, 2026 (221,000 shares at $52.1226), and September 4, 2026 (224,000 shares at $52.1512), excluding commissions.

Who are the main reporting persons in this MARINEMAX INC (HZO) Schedule 13D/A amendment?

Reporting persons include Matsuba Limited, Vox Ventures B.V., PPF Group a.s., AMALAR HOLDING s., and Renata Kellnerova. Matsuba Limited is the record owner of the 1,343,635 shares, and the others may be deemed to beneficially own them through their relationships.

Have there been other MARINEMAX INC (HZO) share transactions by the group in the past 60 days?

The filing states that, other than the 447,045-share open-market sales described for August 27–September 4, 2026, there have been no other transactions in MarineMax common stock by the reporting persons during the past 60 days.

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

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Available on EDGAR 09/08/2026 - 09:45 PM Accepted by SEC EDGAR 09/08/2026 - 09:45 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13D

Under the Securities Exchange Act of 1934

(Amendment No. 5)

MARINEMAX INC

(Name of Issuer)

Common Stock, par value $0.001 per share

(Title of Class of Securities)

567908108

(CUSIP Number)

Scott Levi
White & Case LLP, 1221 Avenue of the Americas
New York, NY, 10020-1095
212 819 8320

(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)

09/03/2026

(Date of Event Which Requires Filing of This Statement)

If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.

The information required on the remainder of this cover page shall not be deemed to be "filed" for the purpose of Section 18 of the Securities Exchange Act of 1934 ("Act") or otherwise subject to the liabilities of that section of the Act but shall be subject to all other provisions of the Act (however, see the Notes).

schemaVersion:

SCHEDULE 13D

CUSIP Number(s): 567908108

1

Name of reporting person

Kellnerova Renata

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

CZECH REPUBLIC

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,343,635.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,343,635.00

11

Aggregate amount beneficially owned by each reporting person

1,343,635.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.1 %

14

Type of Reporting Person (See Instructions)

IN

SCHEDULE 13D

CUSIP Number(s): 567908108

1

Name of reporting person

AMALAR HOLDING s.r.o.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

CZECH REPUBLIC

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,343,635.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,343,635.00

11

Aggregate amount beneficially owned by each reporting person

1,343,635.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.1 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

CUSIP Number(s): 567908108

1

Name of reporting person

PPF Group a.s.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

CZECH REPUBLIC

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,343,635.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,343,635.00

11

Aggregate amount beneficially owned by each reporting person

1,343,635.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.1 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

CUSIP Number(s): 567908108

1

Name of reporting person

Vox Ventures B.V.

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

AF

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

NETHERLANDS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,343,635.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,343,635.00

11

Aggregate amount beneficially owned by each reporting person

1,343,635.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.1 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

CUSIP Number(s): 567908108

1

Name of reporting person

Matsuba Limited

2

Check the appropriate box if a member of a Group (See Instructions)

(a)
(b)

3

SEC use only

4

Source of funds (See Instructions)

WC

5

Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)

6

Citizenship or place of organization

CYPRUS

Number of Shares Beneficially Owned by Each Reporting Person With:

7	Sole Voting Power 0.00
8	Shared Voting Power 1,343,635.00
9	Sole Dispositive Power 0.00
10	Shared Dispositive Power 1,343,635.00

11

Aggregate amount beneficially owned by each reporting person

1,343,635.00

12

Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)

13

Percent of class represented by amount in Row (11)

6.1 %

14

Type of Reporting Person (See Instructions)

CO

SCHEDULE 13D

Item 1.	Security and Issuer
(a)	Title of Class of Securities: Common Stock, par value $0.001 per share
(b)	Name of Issuer: MARINEMAX INC
(c)	Address of Issuer's Principal Executive Offices: 501 Brooker Creek, Boulevard, Oldsmar, FLORIDA , 34677.
Item 4.	Purpose of Transaction
	Item 4 of the Schedule 13D is hereby amended and supplemented to include the following: Between August 27, 2026 and September 4, 2026, the Reporting Persons sold an aggregate of 447,045 shares of Common Stock in the open market in multiple transactions, as follows: 700 shares on August 27, 2026 at prices within a range less than one dollar (with a weighted average price of $52.2000); 1,345 shares on August 31, 2026 at prices within a range less than one dollar (with a weighted average price of $52.2008); 221,000 shares on September 3, 2026 at prices within a range less than one dollar (with a weighted average price of $52.1226); and 224,000 shares on September 4, 2026 at prices within a range less than one dollar (with a weighted average price of $52.1512). Such price amounts exclude commissions paid in per share prices. The Reporting Persons undertake to provide the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within such ranges.
Item 5.	Interest in Securities of the Issuer
(a)	Item 5(a) of the Schedule 13D is hereby amended and restated by replacing it with the following: As of the date of this Amendment No. 5, Matsuba Limited is the owner of record of 1,343,635 shares of Common Stock, representing approximately 6.1% of the outstanding Common Stock (based on 22,086,746 shares outstanding as of July 20, 2026, as reported on the Issuer's quarterly report on Form 10-Q filed July 23, 2026). Each Reporting Person, as a result of the relationships previously described in Item 2, may be deemed to directly or indirectly beneficially own such shares, and each disclaims beneficial ownership except to the extent of its respective pecuniary interest therein.
(b)	Item 5(b) of the Schedule 13D is hereby amended and restated by replacing it with the following: For information on the Reporting Persons' powers to vote and dispose of such shares, see rows 7 to 10 of the cover pages to this Schedule 13D/A.
(c)	Item 5(c) of the Schedule 13D is hereby amended and restated by replacing it with the following: Other than the transaction described in Item 4 above, there have been no transactions by the Reporting Persons in the Common Stock effected during the past 60 days.
(d)	Item 5(d) of the Schedule 13D is hereby amended and restated by replacing it with the following: To the best knowledge of the Reporting Persons, no one other than the Reporting Persons and their respective members, shareholders and affiliates has the right to receive or the power to direct the receipt of dividends from, or the proceeds from the sale of, the Common Stock reported herein as beneficially owned by the Reporting Persons.
(e)	Item 5(e) of the Schedule 13D is hereby amended and restated by replacing it with the following: Not applicable.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Kellnerova Renata

Signature:	/s/ Lubomir Kral
Name/Title:	Lubomir Kral, Attorney-in-Fact
Date:	09/08/2026

AMALAR HOLDING s.r.o.

Signature:	/s/ Lubomir Kral
Name/Title:	Lubomir Kral, Attorney-in-Fact
Date:	09/08/2026

PPF Group a.s.

Signature:	/s/ Lubomir Kral
Name/Title:	Lubomir Kral, Attorney-in-Fact
Date:	09/08/2026

Vox Ventures B.V.

Signature:	/s/ Lubomir Kral
Name/Title:	Lubomir Kral, Attorney-in-Fact
Date:	09/08/2026

Matsuba Limited

Signature:	/s/ Lubomir Kral
Name/Title:	Lubomir Kral, Attorney-in-Fact
Date:	09/08/2026