Ownership Submission
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 OF SECURITIES

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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(Print or Type Responses)
1. Name and Address of Reporting Person *
MCGILL WILLIAM H JR
   2. Issuer Name and Ticker or Trading Symbol
MARINEMAX INC [HZO] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
__X__ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Executive Chairman
(Last)
(First)
(Middle)
2600 MCCORMICK DRIVE, SUITE 200		 3. Date of Earliest Transaction (Month/Day/Year)
09/30/2018
(Street)

CLEARWATER, FL 33759		 4. If Amendment, Date Original Filed(Month/Day/Year)
 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 (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
Common Stock 09/30/2018   M   5,468 A $ 0 212,210 D  
Common Stock 09/30/2018   F   2,152 D $ 21.25 210,058 D  
Common Stock 09/30/2018   M   11,695 A $ 0 221,753 D  
Common Stock 09/30/2018   F   4,602 D $ 21.25 217,151 D  
Common Stock 09/30/2018   M   9,794 A $ 0 226,945 D  
Common Stock 09/30/2018   F   3,854 D $ 21.25 223,091 D  
Common Stock 09/30/2018   M   12,000 A $ 0 235,091 D  
Common Stock 09/30/2018   F   2,922 D $ 21.25 232,169 D  
Common Stock 09/30/2018   M   42,925 A $ 0 275,094 D  
Common Stock 09/30/2018   F   15,601 D $ 21.25 260,990 (1) D  

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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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 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
Restricted Stock Units (2) 09/30/2018   M     5,468   (3)   (3) Common Stock 5,468 $ 0 0 D  
Restricted Stock Units (2) 09/30/2018   M     11,695   (4)   (4) Common Stock 11,695 $ 0 11,699 D  
Restricted Stock Units (2) 09/30/2018   M     9,794   (5)   (5) Common Stock 9,794 $ 0 19,618 D  
Performance Based Restricted Stock Units (2) 09/30/2018   M     12,000   (6)   (6) Common Stock 12,000 $ 0 0 D  
Performance Based Restricted Stock Units (2) 09/30/2018   M     42,925   (7)   (7) Common Stock 42,925 $ 0 0 D  

Reporting Owners

Reporting Owner Name / Address Relationships
 Director  10% Owner  Officer  Other
MCGILL WILLIAM H JR
2600 MCCORMICK DRIVE
SUITE 200
CLEARWATER, FL 33759		   X     Executive Chairman  

Signatures

 Anthony E. Cassella, Jr., Attorney-in-Fact for William H. McGill, Jr.   10/02/2018
**Signature of Reporting Person Date

Explanation of Responses:

* 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).
(1) Includes 1,497 shares acquired under the MarineMax Employee Stock Purchase Plan on various dates during Q3 of fiscal 2018.
(2) Each restricted stock unit represents a contingent right to receive one share of Marinemax, Inc. Common Stock.
(3) The restricted stock units vested in three annual installments beginning on September 30, 2016.
(4) The restricted stock units vested in three annual installments beginning on September 30, 2017.
(5) The restricted stock units vested in three annual installments beginning on September 30, 2018.
(6) The performance-based restricted stock units vest on September 30, 2018. These units were awarded based on performance criteria established on November 15, 2014 and tied to inventory management and operations during fiscal 2017.
(7) The performance-based restricted stock units vest on September 30, 2018. These units were awarded based on performance criteria established on November 12, 2015 and tied to inventory management and operations during fiscal 2016.

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