Sec Form 4 Filing - FORMELA JEAN FRANCOIS @ Ikena Oncology, Inc. - 2021-03-30

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 FORMELA JEAN FRANCOIS 2. Issuer Name and Ticker or Trading Symbol Ikena Oncology, Inc. [ IKNA] 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 IKENA ONCOLOGY, INC., 645 SUMMER STREET, SUITE 101 3. Date of Earliest Transaction (MM/DD/YY) 03/30/2021 (Street) BOSTON, MA02210 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 03/30/2021 C 2,901,609 A 2,901,609 I See Footnote ( 2 ) Common Stock 03/30/2021 C 1,099,118 A 1,268,213 I See Footnote ( 3 ) Common Stock 03/30/2021 C 749,634 A 749,634 I See Footnote ( 4 )

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 Series B Preferred Stock ( 1 ) 12/21/2020 A( 5 ) 5,362,888 ( 1 ) ( 1 ) Common Stock 749,634 $ 1.3985 5,362,888 I See Footnote ( 4 ) Series A Preferred Stock ( 1 ) 03/30/2021 C 9,499,999 ( 1 ) ( 1 ) Common Stock 1,327,927 ( 1 ) 0 I See Footnote ( 2 ) Series A-1 Preferred Stock ( 1 ) 03/30/2021 C 11,258,117 ( 1 ) ( 1 ) Common Stock 1,573,682 ( 1 ) 0 I See Footnote ( 2 ) Series A-2 Preferred Stock ( 1 ) 03/30/2021 C 7,863,094 ( 1 ) ( 1 ) Common Stock 1,099,118 ( 1 ) 0 I See Footnote ( 3 ) Series B Preferred Stock ( 1 ) 03/30/2021 C 5,362,888 ( 1 ) ( 1 ) Common Stock 749,634 ( 1 ) 0 I See Footnote ( 4 )

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other FORMELA JEAN FRANCOIS C/O IKENA ONCOLOGY, INC. 645 SUMMER STREET, SUITE 101 BOSTON, MA02210 X Signatures /s/ Ommer Chohan, as Attorney-in-Fact for Jean Francois Formela 04/01/2021 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Each share of Series A Preferred Stock, Series A-1 Preferred Stock, Series A-2 Preferred Stock and Series B Preferred Stock (together, the "Preferred Stock") was convertible at any time at the holder's election and automatically upon the closing of the Issuer's initial public offering. The Preferred Stock converted into Common Stock on a one-for-7.154 basis upon the closing of the Issuer's initial public offering without payment or additional consideration. The Preferred Stock had no expiration date. ( 2 )These shares are held directly by Atlas Venture Fund X, L.P. ("Atlas X"). Atlas Venture Associates X, L.P. ("Associates X") is the general partner of Atlas X. Atlas Venture Associates X, LLC ("Associates X LLC") is the general partner of Associates X. The Reporting Person is a member of Associates X LLC and disclaims Section 16 beneficial ownership of such shares, except to the extent of his pecuniary interest therein, if any. ( 3 )These shares are held directly by Atlas Venture Fund XI, L.P. ("Atlas XI"). Atlas Venture Associates XI, L.P. ("Associates XI") is the general partner of Atlas XI. Atlas Venture Associates XI, LLC ("Associates XI LLC") is the general partner of Associates XI. The Reporting Person is a member of Associates XI LLC and disclaims Section 16 beneficial ownership of such shares, except to the extent of his pecuniary interest therein, if any. ( 4 )These shares are held directly by Atlas Venture Opportunity Fund I, L.P. ("Atlas Opportunity I"). Atlas Venture Associates Opportunity I, L.P. ("Associates I") is the general partner of Atlas Opportunity I. Atlas Venture Associates Opportunity I, LLC ("Associates I LLC") is the general partner of Associates I. The Reporting Person is a member of Associates I LLC and disclaims Section 16 beneficial ownership of such shares, except to the extent of his pecuniary interest therein, if any. ( 5 )This transaction occurred prior to the Issuer's initial public offering and is being reported on Form 4 solely for purposes of compliance with Rule 16a-2(a) under the Securities Exchange Act of 1934, as amended. The securities covered by such transaction were previously included on the Reporting Person's Form 3.

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