Sec Form 3 Filing - Bisker-Leib Vered @ Compass Therapeutics, Inc. - 2020-06-17

FORM 3 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 Bisker-Leib Vered 2. Issuer Name and Ticker or Trading Symbol Compass Therapeutics, Inc. [ NONE] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) Chief Operating Officer (Last) (First) (Middle) C/O COMPASS THERAPEUTICS, INC., 245 FIRST STREET, 3RD FLOOR 3. Date of Earliest Transaction (MM/DD/YY) 06/17/2020 (Street) CAMBRIDGE,, MA02142 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 513,401 D ( 1 )

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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Bisker-Leib Vered C/O COMPASS THERAPEUTICS, INC. 245 FIRST STRE ET, 3RD FLOOR CAMBRIDGE,, MA02142 Chief Operating Officer Signatures /s/ Vered Bisker-Leib 06/23/2020 Signature of Reporting Person Date

Explanation of Responses:

( 1 )410,530 of these shares of common stock underlie unvested restricted stock awards that are subject to a right of repurchase in favor of the issuer, which vest as follows: restricted stock award granted on February 22, 2018, 2,618.3125 shares vest per month with shares fully vested on February 28, 2022, restricted stock award granted on February 22, 2018, shares fully vest upon the satisfaction of performance conditions, restricted stock award granted on July 3, 2019, 2,693.9792 shares vest per month with shares fully vested on July 31, 2023, and restricted stock award granted on December 20, 2019, 25% cliff on December 20, 2020; 4,074.417 shares vest per month thereafter with shares fully vested on December 31, 2023.

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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