| FORM 4 |
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 or Section 30(h) of the Investment Company Act of 1940 |
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| Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). | |||||||||||||||||
1. Name and Address of Reporting Person*
(Street)
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2. Issuer Name and Ticker or Trading Symbol
Apogee Therapeutics, Inc. [ APGE ] |
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
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3. Date of Earliest Transaction
(Month/Day/Year) 08/07/2026 | ||||||||||||||||||||||||||
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4. If Amendment, Date of Original Filed
(Month/Day/Year) |
6. Individual or Joint/Group Filing (Check Applicable Line)
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| Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned | ||||||||||
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| 1. Title of Security (Instr. 3) | 2. Transaction Date (Month/Day/Year) | 2A. Deemed Execution Date, if any (Month/Day/Year) | 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 | 08/07/2026 | M | 31,838 | A | $17 | 330,485 | I | By Fairmount Healthcare Fund II LP(1) | ||
| Common Stock | 08/07/2026 | M | 10,370 | A | $43.85 | 340,855 | I | By Fairmount Healthcare Fund II LP(1) | ||
| Common Stock | 51,166 | I | By Tomas Kiselak | |||||||
| Common Stock | 51,166 | I | By Peter Harwin | |||||||
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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities) | |||||||||||||||
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| 1. Title of Derivative Security (Instr. 3) | 2. Conversion or Exercise Price of Derivative Security | 3. Transaction Date (Month/Day/Year) | 3A. Deemed Execution Date, if any (Month/Day/Year) | 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 (Month/Day/Year) | 7. Title and Amount of Securities Underlying Derivative Security (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: 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) | $17 | 08/07/2026 | M | 31,838 | (2) | 07/13/2033 | Common Stock | 31,838 | $0 | 0 | D(3) | ||||
| Stock Option (Right to Buy) | $43.85 | 08/07/2026 | M | 10,370 | (4) | 06/05/2034 | Common Stock | 10,370 | $0 | 0 | D(3) | ||||
1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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1. Name and Address of Reporting Person*
(Street)
Relationship of Reporting Person(s) to Issuer
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| Explanation of Responses: |
| 1. Fairmount Funds Management LLC ("Fairmount") is the investment manager for Fairmount Healthcare Fund II L.P. The managers of Fairmount are Peter Harwin and Tomas Kiselak. Fairmount, Mr. Harwin, and Mr. Kiselak disclaim beneficial ownership of any of the reported securities, except to the extent of their pecuniary interest therein. |
| 2. This option represented the vested portion of the total right to purchase 47,758 shares of the Issuer's common stock, which vested in three approximately equal annual installments beginning on the first anniversary of the 7/13/2023 grant date. |
| 3. Under Mr. Harwin's arrangement with Fairmount Funds Management LLC (the "Adviser"), Mr. Harwin held the options reported herein for one or more investment vehicles managed by the Adviser (each, a "Fairmount Fund"). Mr. Harwin was obligated to turn over to the Adviser any net cash or stock received from the options for the benefit of such Fairmount Fund. Mr. Harwin therefore disclaimed beneficial ownership of the option and underlying common stock. |
| 4. This option represented the right to purchase 10,370 shares of the Issuer's common stock, which vested on the one-year anniversary of the 6/5/2024 grant date. |
| Remarks: |
| Fairmount and Fairmount Healthcare Fund II LP may each be deemed a director by deputization of the Issuer by virtue of the fact that Tomas Kiselak serves on the board of directors of the Issuer and is a Managing Member of Fairmount. |
| /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC | 08/11/2026 | |
| /s/ Tomas Kiselak, Managing Member of Fairmount Healthcare Fund II LP | 08/11/2026 | |
| /s/ Tomas Kiselak | 08/11/2026 | |
| /s/ Peter Harwin | 08/11/2026 | |
| ** Signature of Reporting Person | Date | |
| 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. | ||