Sec Form 4 Filing - FRIEDMAN MICHAEL R. @ Galera Therapeutics, Inc. - 2026-05-15

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 FRIEDMAN MICHAEL R. 2. Issuer Name and Ticker or Trading Symbol Galera Therapeutics, Inc. [ GRTX] 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 GALERA THERAPEUTICS, INC., 101 LINDENWOOD DRIVE, SUITE 225 3. Date of Earliest Transaction (MM/DD/YY) 05/15/2026 (Street) MALVERN, PA19355 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 05/15/2026 C 2,989,399 A 8,326,269 I See Footnote ( 2 ) Common Stock 08/03/2026 D 41,631 ( 3 ) D 0 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 Series B Preferred Stock ( 1 ) 05/15/2026 C 2,989.399 ( 1 ) ( 1 ) Common Stock 2,989,399 $ 0 0 I See Footnote ( 2 ) Stock Option (Right to Buy) $ 8.2 ( 3 ) 08/03/2026 D 480 ( 3 ) ( 4 )( 6 ) 02/23/2035 Common Stock 480 ( 3 ) ( 4 ) ( 6 ) 0 D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other FRIEDMAN MICHAEL R. C/O GALERA THERAPEUTICS, INC. 101 LINDENWOOD DRIVE, SUITE 225 MALVERN, PA19355 X Signatures /s/ J. Mel Sorensen, Attorney-in-Fact for Michael Friedman 08/05/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )On February 12, 2026, Galera Therapeutics, Inc. ("Galera") filed a Certificate of Amendment (the "Amendment") to the Certificate of Designation of Preferences, Rights, and Limitations of Series B Non-Voting Convertible Preferred Stock. The Amendment provided that, in the sole discretion of Galera's board of directors, Galera may elect to convert, in whole or in part, outstanding shares of Series B Non-Voting Convertible Preferred Stock ("Series B Preferred Stock") into a number of shares of Galera common stock calculated based on the Conversion Ratio (defined as 1,000 shares of Galera common stock issuable upon the conversion of each share of Series B Preferred Stock) (a "Mandatory Conversion"). On May 15, 2026, Galera effected a Mandatory Conversion of Series B Preferred Stock, including shares of Series B Preferred Stock held by the Reporting Person. The shares of Series B Preferred Stock had no expiration date. ( 2 )These securities are held by Equity Trust Company, Custodian FBO Michael Friedman Roth IRA. ( 3 )These numbers have been adjusted to reflect the 1-for-200 reverse stock split (the "Reverse Stock Split") Galera Therapeutics, Inc. ("Galera") effected on July 12, 2026. ( 4 )Pursuant to an Agreement and Plan of Merger, dated as of April 14, 2026 (the "Merger Agreement"), by and among Galera, Obsidian Therapeutics, Inc. ("Obsidian"), Gazelle Parent, Inc. ("Parent"), Onyx MergerSub, Inc., a wholly owned subsidiary of Parent ("Obsidian Merger Sub"), and Gazelle Merger Subsidiary, Inc., a wholly owned subsidiary of Parent ("Galera Merger Sub"), on August 3, 2026, Galera merged with and into Galera Merger Sub, with Galera surviving as a wholly owned subsidiary of Parent (the "Galera Merger"), and Obsidian merged with and into Obsidian Merger Sub, with Obsidian surviving as a wholly owned subsidiary of Parent (the "Obsidian Merger" and, together with the Galera Merger, the "Mergers"). ( 5 )At the effective time of the Galera Merger (the "Galera Effective Time"), each outstanding share of Galera common stock (excluding any shares of Galera common stock held by stockholders who had exercised and perfected appraisal rights for such shares) was converted into the right to receive 0.7019 shares of Parent common stock (the "Galera Exchange Ratio"). ( 6 )At the Galera Effective Time, each outstanding Galera stock option with an exercise price per share less than $15.62 (each, an "In-the-Money Option"), which was the closing trading price of a share of Galera common stock on the last full trading day on which the Galera common stock was traded prior to the date of the Galera Effective Time, became fully vested and was converted into shares of Parent common stock determined by (i) multiplying the number of shares of Galera common stock underlying the In-the-Money Option by the Galera Exchange Ratio (rounded down to the nearest whole share) then (ii) subtracting the number of shares of Parent common stock with a value equal to the exercise price and withholding taxes each required to be paid with respect to the net exercise of the In-the-Money Option, calculated pursuant to the formula set forth in Section 2.6(i) of the Merger Agreement.

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