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 * MPM BIOVENTURES V LLC   2. Issuer Name and Ticker or Trading Symbol Verastem, Inc. [VSTM] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner _____ Officer (give title below) __X__ Other (specify below) Former 10% stockholder (Last) (First) (Middle) C/O MPM ASSET MANAGEMENT, 200 CLARENDON STREET, 54TH FLOOR 3. Date of Earliest Transaction (Month/Day/Year) 02/01/2012 (Street) BOSTON, MA 02116 4. If Amendment, Date 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 (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 02/01/2012   C   1,933,333 A (1) 1,933,333 I By MPM BioVentures V, L.P. (2) Common Stoc 02/01/2012   P   100,000 (3) A $ 10 2,033,333 (4) I By Funds (2) (5)

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

Series A Preferred Stock

(1)

02/01/2012

C

4,000,000

(1)

(1)

Common Stock

1,142,857

$ 0

0

I

By MPM BioVentures V, L.P. (2)

Series B Preferred Stock

(1)

02/01/2012

C

2,500,000

(1)

(1)

Common Stock

714,286

$ 0

0

I

By MPM BioVentures V, L.P. (2)

Seriec C Preferred Stock

(1)

02/01/2012

C

266,666

(1)

(1)

Common Stock

76,190

$ 0

0

I

By MPM BioVentures V, L.P. (2)

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
MPM BIOVENTURES V LLC C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
MPM BIOVENTURES V GP LLC C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
EVNIN LUKE C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
Foley Todd C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
KAILIAN VAUGHN M C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
Scopa James Paul C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
St Peter Steven C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
Vander Vort John C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
MPM BIOVENTURES V, L.P. C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder
MPM ASSET MANAGEMENT INVESTORS BV5 LLC C/O MPM ASSET MANAGEMENT 200 CLARENDON STREET, 54TH FLOOR BOSTON, MA 02116				Former 10% stockholder

Signatures

/s/ Ansbert Gadicke, Member of MPM BioVentures V LLC		02/03/2012
**Signature of Reporting Person		Date
/s/ Ansbert Gadicke, Member of MPM BioVentures V LLC, the Managing Member of MPM BioVentures V GP LLC		02/03/2012
**Signature of Reporting Person		Date
/s/ Luke Evnin		02/03/2012
**Signature of Reporting Person		Date
/s/ Todd Foley		02/03/2012
**Signature of Reporting Person		Date
/s/ Vaughn M. Kailian		02/03/2012
**Signature of Reporting Person		Date
/s/ James Paul Scopa		02/03/2012
**Signature of Reporting Person		Date
/s/ Steven St. Peter		02/03/2012
**Signature of Reporting Person		Date
/s/ John Vander Vort		02/03/2012
**Signature of Reporting Person		Date
/s/ Ansbert Gadicke, Member of MPM BioVentures V LLC, the Managing Member of MPM BioVentures V GP LLC, the General Partner of MPM BioVentures V, L.P		02/03/2012
**Signature of Reporting Person		Date
/s/ Ansbert Gadicke, Member of MPM BioVentures V LLC, the Managing Member of MPM Asset Management Investors BV5 LLC		02/03/2012
**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)	Each share of preferred stock converted into approximately 0.29 shares of common stock upon the closing of the issuer's initial public offering. The shares had no expiration date.
(2)	MPM BioVentures V GP LLC ("MPM V GP") is the general partner of MPM BioVentures V, L.P. ("MPM V LP") and MPM BioVentures V LLC ("MPM V LLC") is the managing member of MPM V GP. Luke Evnin, Todd Foley, Ansbert Gadicke, Vaughn Kailian, James Scopa, Steven St. Peter and John Vander Vort are the members of MPM V LLC and share the power to vote, hold and dispose of the shares held by MPM V LP. Each reporting person disclaims beneficial ownership of the securities reported herein except to the extent of his or its respective pecuniary interest therein.
(3)	Shares were purchased as follows: 96,260 by MPM BioVentures V, L.P. and 3,740 by MPM Asset Management Investors BV5 LLC.
(4)	Shares are held as follows: 2,029,593 by MPM BioVentures V, L.P. and 3,740 by MPM Asset Management Investors BV5 LLC.
(5)	MPM BioVentures V LLC ("MPM V LLC") is the managing member of MPM Asset Management Investors BV5 LLC ("MPM Asset"). Luke Evnin, Todd Foley, Ansbert Gadicke, Vaughn Kailian, James Scopa, Steven St. Peter and John Vander Vort are the members of MPM V LLC and share the power to vote, hold and dispose of the shares held by MPM Asset. Each reporting person disclaims beneficial ownership of the securities reported herein except to the extent of his or its respective pecuniary interest therein.

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