SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person* MCGUIRE TERRANCE (Last) (First) (Middle) C/O PULMATRIX, INC., 990 HAYDEN AVE (Street) LEXINGTON MA 02421 (City) (State) (Zip)	2. Date of Event Requiring Statement (Month/Day/Year) 06/15/2015	3. Issuer Name and Ticker or Trading Symbol Pulmatrix, Inc. [ PULM ]
		4. Relationship of Reporting Person(s) to Issuer (Check all applicable) X Director X 10% Owner Officer (give title below) Other (specify below)	5. If Amendment, Date of Original Filed (Month/Day/Year)
			6. Individual or Joint/Group Filing (Check Applicable Line) Form filed by One Reporting Person X 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 Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: 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

1. Name and Address of Reporting Person* MCGUIRE TERRANCE (Last) (First) (Middle) C/O PULMATRIX, INC., 990 HAYDEN AVE (Street) LEXINGTON MA 02421 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer X Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Partners V, L.P. (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Partners Founders' Fund V, L.P. (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Partners Special Founders' Fund V, L.P. (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Partners Entrepreneurs' Fund V, L.P. (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* POLARIS VENTURE PARTNERS IV LP (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Management Co IV LLC (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Polaris Venture Management Co. V, L.L.C. (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* POLARIS VENTURE PARTNERS ENTREPRENEURS FUND IV LP (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

1. Name and Address of Reporting Person* Flint Jonathan A (Last) (First) (Middle) 1000 WINTER STREET SUITE 3350 (Street) WALTHAM MA 02451 (City) (State) (Zip) Relationship of Reporting Person(s) to Issuer Director X 10% Owner Officer (give title below) Other (specify below)

Explanation of Responses:

No securities are beneficially owned.

	/s/ Garrett Winslow, Attorney-in-Fact for Terrance McGuire.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Jonathan A. Flint.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. IV, L.L.C.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. IV, L.L.C., general partner of Polaris Venture Partners Entrepreneurs' Fund IV, L.P.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. IV, L.L.C., general partner of Polaris Venture Partners IV, L.P.	06/17/2015
	/s/ Garrett Winslow Attorney-in-Fact for Polaris Venture Management Co. V, L.L.C.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. V, L.L.C., general partner of Polaris Venture Partners Entrepreneurs' Fund V, L.P.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. V, L.L.C., general partner of Polaris Venture Partners V, L.P.	06/17/2015
	/s/ Garrett Winslow Attorney-in-Fact for Polaris Venture Management Co. V, L.L.C., general partner of Polaris Venture Partners Founders' Fund V, L.P.	06/17/2015
	/s/ Garrett Winslow, Attorney-in-Fact for Polaris Venture Management Co. V, L.L.C., general partner of Polaris Venture Partners Special Founders' Fund IV, L.P.	06/17/2015
	** 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).
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