FORM 3
        	UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES
	OMB APPROVAL
OMB Number: 3235-0104
Estimated average burden
hours per response... 0.5	
                      	Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940	                      	

1. Name and Address of Reporting Person *

Berg David P	2. Date of Event Requiring Statement (MM/DD/YYYY)
9/17/2015 
	3. Issuer Name and Ticker or Trading Symbol

Planet Fitness, Inc. [PLNT]	
(Last)        (First)        (Middle)

C/O PLANET FITNESS, INC., 26 FOX RUN ROAD	4. Relationship of Reporting Person(s) to Issuer (Check all applicable)

__ X __ Director                            _____ 10% Owner
_____ Officer (give title below)          _____ Other (specify below)	
(Street)

NEWINGTON, NH 03801       

(City)              (State)              (Zip)	5. If Amendment, Date Original Filed (MM/DD/YYYY)

	6. Individual or Joint/Group Filing (Check Applicable Line)

_ X _ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person	

Table I - Non-Derivative Securities Beneficially Owned	
1.Title of Security
(Instr. 4)	2. Amount of Securities Beneficially Owned
(Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)	4. Nature of Indirect Beneficial Ownership
(Instr. 5)	

Table II - Derivative Securities Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities)	
1. Title of Derivate Security
(Instr. 4)	2. Date Exercisable and Expiration Date
(MM/DD/YYYY)	3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)	4. Conversion or Exercise Price of Derivative Security	5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)	6. Nature of Indirect Beneficial Ownership
(Instr. 5)	
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares				

Explanation of Responses:	

Remarks:
Justin Vartanian is signing on behalf of Mr. Berg pursuant to a Power of Attorney dated September 10, 2015, which is attached hereto as an exhibit.	
No securities are beneficially owned.	

Reporting Owners	
Reporting Owner Name / Address	Relationships	
	Director	10% Owner	Officer	Other	
Berg David P
C/O PLANET FITNESS, INC.
26 FOX RUN ROAD
NEWINGTON, NH 03801	X				

Signatures		
/s/ Justin Vartanian, attorney-in-fact		9/17/2015	
** 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 5(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 control number.	

                                POWER OF ATTORNEY

        The undersigned hereby constitutes and appoints Dorvin Lively, Richard
Moore, and Justin Vartanian, with full power of substitution, as the
undersigned's true and lawful attorney-in-fact to:

        (1)     prepare, execute in the undersigned's name and on the
                undersigned's behalf, and submit to the U.S. Securities and
                Exchange Commission (the "SEC") a Form ID, including amendments
                thereto, and any other documents necessary or appropriate to
                obtain codes and passwords enabling the undersigned to make
                electronic filings with the SEC of reports required by Section
                16(a) of the Securities Exchange Act of 1934, as amended, or any
                rule or regulation of the SEC;

        (2)     execute for and on behalf of the undersigned, in the
                undersigned's capacity as officer and/or director of Planet
                Fitness, Inc. (the "Company"), Forms 3, 4, and 5 in accordance
                with Section 16(a) of the Securities Exchange Act of 1934, as
                amended, and the rules thereunder;

        (3)     do and perform any and all acts for and on behalf of the
                undersigned that may be necessary or desirable to complete and
                execute any such Form 3, 4, or 5, complete and execute any
                amendment or amendments thereto, and timely file such form with
                the SEC and any stock exchange or similar authority; and

        (4)     take any other action of any type whatsoever in connection with
                the foregoing that, in the opinion of such attorney-in-fact, may
                be of benefit to, in the best interest of, or legally required
                by, the undersigned, it being understood that the documents
                executed by such attorney-in-fact on behalf of the undersigned
                pursuant to this Power of Attorney shall be in such form and
                shall contain such terms and conditions as such attorney-in-fact
                may approve in such attorney-in-fact's discretion.

        The undersigned hereby grants to each such attorney-in-fact full power
and authority to do and perform any and every act and thing whatsoever
requisite, necessary, or proper to be done in the exercise of any of the rights
and powers herein granted, as fully to all intents and purposes as the
undersigned might or could do if personally present, with full power of
substitution or revocation, hereby ratifying and confirming all that such
attorney-in-fact, or such attorney-in-fact's substitute or substitutes, shall
lawfully do or cause to be done by virtue of this power of attorney and the
rights and powers herein granted. The undersigned acknowledges that the
foregoing attorney-in-fact, in serving in such capacity at the request of the
undersigned, is not assuming, nor is the Company assuming, any of the
undersigned's responsibilities to comply with Section 16 of the Securities
Exchange Act of 1934, as amended.

        This Power of Attorney shall remain in full force and effect until the
undersigned is no longer required to file Forms 3, 4, and 5 with respect to the
undersigned's holdings of and transactions in securities issued by the Company,
unless earlier revoked by the undersigned in a signed writing delivered to the
foregoing attorney-in-fact.

                  [Remainder of page intentionally left blank]

        IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of 10th September, 2015.

                                        /s/ David Berg
                                        ----------------------------------------
                                        David Berg