Key facts
- This page summarizes Fairmount Funds Management LLC's Form 4 filing for Apogee Therapeutics, Inc. (APGE).
- 4 reported transactions and 8 derivative rows are listed below.
- Accepted by SEC: 11 Aug 2026, 16:30.
Fairmount Funds Management LLC - 07 Aug 2026 Form 4 Insider Report for Apogee Therapeutics, Inc. (APGE)
- Reporting relationship
- Director
- Issuer ticker
- APGE
- Reported as of
- 07 Aug 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 11 Aug 2026, 16:30:25 UTC
- Prior SEC filing
- 20 Jul 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
Source evidence
Original filing metadata and source links for verification.
4 source fields
Reporting owner
1 detail
Key filing fact
Fairmount Funds Management LLC filed Form 4 for Apogee Therapeutics, Inc. (APGE) on 11 Aug 2026.
Change
- Previous filing in this sequence was filed on 20 Jul 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (4)
CIK 0001802528
Primary reporting owner
Fairmount Funds Management LLC
- Relationship
- Director
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Funds Management LLC
- Signature date
- 11 Aug 2026
CIK 0001769651
Fairmount Healthcare Fund II L.P.
- Relationship
- Director
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak, Managing Member of Fairmount Healthcare Fund II LP
- Signature date
- 11 Aug 2026
CIK 0001830177
Kiselak Tomas
- Relationship
- Director
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Tomas Kiselak
- Signature date
- 11 Aug 2026
CIK 0001663607
Harwin Peter Evan
- Relationship
- Director
- Address
- 200 BARR HARBOR DRIVE, SUITE 400, WEST CONSHOHOCKEN
- Signature
- /s/ Peter Harwin
- Signature date
- 11 Aug 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +31,838
- Change %
- +11%
- Price
- $17.00*
- Shares after
- 330,485
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +31,838
- Change %
- +11%
- Price
- $17.00*
- Shares after
- 330,485
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +31,838
- Change %
- +11%
- Price
- $17.00*
- Shares after
- 330,485
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +31,838
- Change %
- +11%
- Price
- $17.00*
- Shares after
- 330,485
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +10,370
- Change %
- +3.1%
- Price
- $43.85*
- Shares after
- 340,855
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +10,370
- Change %
- +3.1%
- Price
- $43.85*
- Shares after
- 340,855
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +10,370
- Change %
- +3.1%
- Price
- $43.85*
- Shares after
- 340,855
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
transaction
Common Stock
Options Exercise
- Transaction value
- Shares
- +10,370
- Change %
- +3.1%
- Price
- $43.85*
- Shares after
- 340,855
- Date
- 07 Aug 2026
- Ownership
- By Fairmount Healthcare Fund II LP
- Footnotes
- F1
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Tomas Kiselak
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Tomas Kiselak
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Tomas Kiselak
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Tomas Kiselak
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Peter Harwin
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Peter Harwin
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Peter Harwin
APGE
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 51,166
- Date
- 07 Aug 2026
- Ownership
- By Peter Harwin
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -31,838
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 31,838
- Exercise price
- $17.00
- Footnotes
- F2, F3
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -31,838
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 31,838
- Exercise price
- $17.00
- Footnotes
- F2, F3
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -31,838
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 31,838
- Exercise price
- $17.00
- Footnotes
- F2, F3
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -31,838
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 31,838
- Exercise price
- $17.00
- Footnotes
- F2, F3
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,370
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,370
- Exercise price
- $43.85
- Footnotes
- F3, F4
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,370
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,370
- Exercise price
- $43.85
- Footnotes
- F3, F4
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,370
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,370
- Exercise price
- $43.85
- Footnotes
- F3, F4
APGE
transaction
Derivative
Stock Option (Right to Buy)
Options Exercise
- Transaction value
- Shares
- -10,370
- Change %
- -100%
- Price
- $0.000000*
- Shares after
- 0
- Date
- 07 Aug 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 10,370
- Exercise price
- $43.85
- Footnotes
- F3, F4
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 4 footnotes
Footnote F1
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.
Footnote F2
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.
Footnote F3
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.
Footnote F4
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.
SEC 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.