Quick Takeaways
- Fairmount Funds Management LLC filed SCHEDULE 13D/A for Apogee Therapeutics, Inc. Common Stock, $0.00001 par value (APGE).
- Disclosed ownership: 10%.
- Date of event: 26 Mar 2026.
Fairmount Funds Management LLC - 26 Mar 2026 SCHEDULE 13D/A Report for Apogee Therapeutics, Inc. Common Stock, $0.00001 par value (APGE)
- Filing Manager
- Fairmount Funds Management LLC
- Reporting Manager
- Peter Evan Harwin
- Symbol
- APGE
- Shares outstanding
- 67,717,457 shares
- Disclosed Ownership
- 6,764,974 shares
- Ownership
- 10%
- Form type
- SCHEDULE 13D/A
- Filing time
- 27 Mar 2026, 17:30:11 UTC
- Date of event
- 26 Mar 2026
- Previous filing
- 22 Jan 2026
- SEC
- View on sec.gov
Quoteable Key Fact
"Fairmount Funds Management LLC disclosed 10% ownership in Apogee Therapeutics, Inc. Common Stock, $0.00001 par value (APGE) on 26 Mar 2026."
What Changed
- Previous schedule filing date: 22 Jan 2026.
- Current filing was accepted on 27 Mar 2026, 17:30.
Why This Matters
- This page explains what this Schedule 13D/13G filing tells you before manager-level rows.
- You can verify ownership claims directly against the original SEC filing.
Source Evidence
Backed by Schedule 13D/13G
See Original Filing
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
Reporting Managers (4)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Fairmount Funds Management LLC | 9.8% | 6,666,332 | 0 | 6,666,332 | /s/ Peter Harwin | Peter Harwin, Managing Member | 0001802528 |
| Fairmount Healthcare Fund II L.P. | 9.8% | 6,666,332 | 0 | 6,666,332 | /s/ Peter Harwin | Peter Harwin, Managing Member | 0001769651 |
| Peter Evan Harwin | 10% | 6,764,974 | 93,374 | 6,671,600 | /s/ Peter Harwin | Peter Harwin | 0001663607 |
| Tomas Kiselak | 10% | 6,764,974 | 93,374 | 6,671,600 | /s/ Tomas Kiselak | Tomas Kiselak | 0001830177 |