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).

1. Name and Address of Reporting Person* Fleming Alison B (Last) (First) (Middle) C/O COLLEGIUM PHARMACEUTICAL, INC. 780 DEDHAM STREET, SUITE 800 (Street) CANTON MA 02021 (City) (State) (Zip)	2. Issuer Name and Ticker or Trading Symbol COLLEGIUM PHARMACEUTICAL, INC [ COLL ]	5. Relationship of Reporting Person(s) to Issuer (Check all applicable) Director 10% Owner X Officer (give title below) Other (specify below) Chief Technology Officer
	3. Date of Earliest Transaction (Month/Day/Year) 04/02/2018
	4. If Amendment, Date of 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

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	04/02/2018		M		4,225	A	$0.28	53,541	D
Common Stock	04/02/2018		M		3,917	A	$0.28	57,458	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
Stock option (right to purchase)	$0.28	04/02/2018		M			4,225	(1)	03/05/2024	Common Stock	4,225	$0	0	D
Stock option (right to purchase)	$0.28	04/02/2018		M			3,917	(2)	03/05/2024	Common Stock	3,917	$0	0	D

Explanation of Responses:

1. 4,225 option shares are exercisable. The option, initially representing a right to purchase a total of 15,623 shares, vested and became exercisable in equal installments (rounded up to the nearest whole share of common stock) on a monthly basis over a four-year period commencing on March 5, 2014, subject to the reporting person's continued service with the issuer.

2. 3,917 option shares are exercisable. The option, initially representing a right to purchase a total of 14,492 shares, vested and became exercisable over a four-year period commencing on March 5, 2014. Twenty-five percent (25%) of the option vested and became exercisable on March 5, 2015 and the balance vested in equal monthly installments (rounded up to the nearest whole share of common stock) at the end of each monthly period over the remaining three years of the four-year period, subject to the reporting person's continued service with the issuer.

Remarks:

	/s/ Paul Brannelly as Attorney-In-Fact For Alison B. Fleming	04/04/2018
	** 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.