Sec Form 4 Filing - HENNER DENNIS @ Imago BioSciences, Inc. - 2023-01-11

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

OMB APPROVAL OMB Number: 3235-0287 Expires: November 30, 2011 Estimated average burden hours per response... 0.5

1. Name and Address of Reporting Person HENNER DENNIS 2. Issuer Name and Ticker or Trading Symbol Imago BioSciences, Inc. [ IMGO] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) X __ Director _____ 10% Owner _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) C/O IMAGO BIOSCIENCES, INC., 303 TWIN DOLPHIN DRIVE, 6TH FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 01/11/2023 (Street) REDWOOD CITY, CA94065 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 01/11/2023 U 26,095 D $ 36 0 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) $ 15.65 01/11/2023 D 11,904 ( 1 ) 05/31/2032 Common Stock 11,904 ( 1 ) 0 D( 2 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other HENNER DENNIS C/O IMAGO BIOSCIENCES, INC. 303 TWIN DOLPHIN DRIVE, 6TH FLOOR REDWOOD CITY, CA94065 X Signatures /s/Hugh Y. Rienhoff, as Attorney-in-fact for Dennis Henner 01/11/2023 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On November 19, 2022, the Issuer entered into an Agreement and Plan of Merger (the "Merger Agreement"), by and among the Issuer, Merck Sharpe & Dohme LLC and M-Inspire Merger Sub, Inc., providing for the merger of M-Inspire Merger Sub, Inc. with and into the Issuer (the "Merger"), with the Issuer surviving as a wholly owned subsidiary of Merck Sharpe & Dohme LLC. Pursuant to the Merger Agreement, each option to purchase common stock of the Issuer, whether vested or unvested, outstanding immeditately prior to the effective time of the Merger, was exchanged for a cash payment equal to (x) the aggregate number of shares of the Issuer's common stock subject to such option, multiplied by (y) the excess, if any, of $36.00 over the per share exercise price under such option. ( 2 )The Reporting Person disclaims beneficial ownership of these securities and the inclusion of the securities in this report shall not be deemed an admission of beneficial ownership for purposes of Section 16 or any other purpose. The Reporting Person is an employee of Blackstone Inc. or one of its affiliates ("Blackstone"). Pursuant to arrangements between the Reporting Person and Blackstone, the Reporting Person is required to transfer to Blackstone any and all compensation received in connection with his directorship for any company Blackstone invests in or advises.

Remarks: Mr. Henner, an Executive Advisor to Blackstone or one of its affiliates, is a member of the board of directors of the Issuer. Mr. Henner disclaims beneficial ownership of any securities of the Issuer that may be deemed to be beneficially owned by affiliates of Blackstone.

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.