Sec Form 5 Filing - ELMS STEVE @ Marker Therapeutics, Inc. - 2020-12-31

FORM 5 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 ELMS STEVE 2. Issuer Name and Ticker or Trading Symbol Marker Therapeutics, Inc. [ MRKR] 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 MARKER THERAPEUTICS, INC., 3200 SOUTHWEST FREEWAY, SUITE 2240 3. Date of Earliest Transaction (MM/DD/YY) 12/31/2020 (Street) HOUSTON, TX77027 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 05/19/2020 A 17,022 ( 1 ) A $ 0 17,022 D Common Stock 2,000,000 I See footnote ( 2 )

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 ELMS STEVE C/O MARKER THERAPEUTICS, INC. 3200 SOUTHWEST FREEWAY, SUITE 2240 HOUSTON, TX77027 X Signatures /s/ Michael Loiacono, Attorney-in-Fact 02/12/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents the portion of the annual board retainer for each non-employee director payable in immediately vested common stock under theCompany's 2014 Omnibus Stock Ownership Plan, as amended and based on the closing price of $2.35 per share, on the day immediatelypreceding the date of the Company's 2019 annual meeting. ( 2 )The reportable securities are directly owned by Aisling Capital IV, LP ("Aisling"). The Reporting Person is a managing member of the general partner of the general partner of Aisling and may be deemed to share voting and dispositive power over the shares owned by Aisling. The Reporting Person disclaims beneficial ownership except to the extent of his pecuniary interest therein, and the inclusion of these securities herein shall not be deemed an admission of beneficial ownership for purposes of Section 16 or for any other purpose.

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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