Sec Form 4 Filing - Paterson Dan @ Verastem, Inc. - 2021-08-12

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 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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1. Name and Address of Reporting Person Paterson Dan 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 X __ Officer (give title below) _____ Other (specify below) President and COO (Last) (First) (Middle) C/O VERASTEM, INC., 117 KENDRICK ST.,, SUITE 500 3. Date of Earliest Transaction (MM/DD/YY) 08/12/2021 (Street) NEEDHAM, MA02494 4. If Amendment, Date Original Filed (MM/DD/YY) 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 (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 08/12/2021 F 50,244 D $ 2.87 333,779( 1 ) D Common Stock 193,129( 2 ) I By The Paterson 1996 Living Trust( 3 ) Common Stock 12/15/2021 A 181,500( 4 ) A $ 0 515,279 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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 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 Stock Option (Right to Buy) $ 2.36 12/15/2021 A 368,500 ( 5 ) 12/15/2031 Common Stock 368,500 $ 0 368,500 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Paterson Dan C/O VERASTEM, INC., 117 KENDRICK ST., SUITE 500 NEEDHAM, MA02494 President and COO Signatures /s/ Robert E. Gagnon, Attorney-in-Fact 12/17/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )The total reflects the disposition of 50,244 shares sold by the Issuer to satisfy statutory withholding requirements and an additional reduction of 46,442 shares previously withheld by the Issuer to satisfy statutory withholding requirements, in each case upon vesting of restricted stock units and a reduction of 128,684 shares transferred to the Paterson 1996 Living Trust. The total also reflects 3,333 shares purchased under the Issuer's Employee Stock Purchase Plan. ( 2 )The total reflects the receipt from Daniel Patterson of a transfer of 138,683 shares, inclusive of 9,999 shares purchased under the Issuer's Employee Stock Purchase Plan. ( 3 )The Reporting Person is the trustee of The Paterson 1996 Living Trust. The Reporting Person disclaims beneficial ownership of these securities except to the extent of his pecuniary interest therein. ( 4 )Represents restricted stock units ("RSUs") granted to the Reporting Person under the Issuer's 2021 Equity Incentive Plan. Each RSU represents the contingent right to receive one share of Common Stock. The RSUs vest as to 25% of the RSUs on the first anniversary of December 15, 2021 (the "RSU Grant Date") and as to an additional 6.25% of the RSUs at the end of each successive three-month period following the first anniversary of the RSU Grant Date until the fourth anniversary of the RSU Grant Date (with the number of RSUs vesting on each vesting date rounded down to the nearest whole RSU, except with respect to the final vesting date on which all remaining unvested RSUs shall vest), provided that the Reporting Person continues to serve as an employee of or other service provider to the Issuer on each such vesting date. ( 5 )The option vests as to 25% of the shares on the first anniversary of December 15, 2021 (the "Option Grant Date") and as to an additional 6.25% of the shares at the end of each successive three-month period following the first anniversary of the Option Grant Date until the fourth anniversary of the Option Grant Date (with the number of shares vesting on each vesting date rounded down to the nearest whole share, except with respect to the final vesting date on which all remaining unvested shares shall vest), provided that the Reporting Person continues to serve as an employee of or other service provider to the Issuer on each such vesting 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).

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