Quick Takeaways
- Adage Capital Management, L.P. filed SCHEDULE 13G/A for Amylyx Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (AMLX).
- Disclosed ownership: 9.9%.
- Date of event: 30 Jun 2025.
Adage Capital Management, L.P. - 30 Jun 2025 SCHEDULE 13G/A Report for Amylyx Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (AMLX)
- Filing Manager
- Adage Capital Management, L.P.
- Reporting Manager
- Adage Capital Management, L.P.
- Symbol
- AMLX
- Shares outstanding
- 89,159,068 shares
- Disclosed Ownership
- 8,800,000 shares
- Ownership
- 9.9%
- Form type
- SCHEDULE 13G/A
- Filing time
- 12 Aug 2025, 09:07:03 UTC
- Date of event
- 30 Jun 2025
- Previous filing
- 12 May 2025
- Next filing
- 13 Nov 2025
- SEC
- View on sec.gov
Quoteable Key Fact
"Adage Capital Management, L.P. disclosed 9.9% ownership in Amylyx Pharmaceuticals, Inc. Common Stock, $0.0001 par value per share (AMLX) on 30 Jun 2025."
What Changed
- Previous schedule filing date: 12 May 2025.
- Current filing was accepted on 12 Aug 2025, 09:07.
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.
Official SEC Source
Backed by Schedule 13D/13G
Beneficial ownership values are sourced from the original SEC Schedule 13D/13G filing.
See Original FilingReporting Managers (3)
| Name | Ownership | Shares Owned | sole voting power | shared voting power | Signature | Title | CIK |
|---|---|---|---|---|---|---|---|
| Adage Capital Management, L.P. | 9.9% | 8,800,000 | 0 | 8,800,000 | /s/ Robert Atchinson | By: Adage Capital Partners LLC, its General Partner, By: Robert Atchinson, its Managing Member | |
| Robert Atchinson | 9.9% | 8,800,000 | 0 | 8,800,000 | /s/ Robert Atchinson | Robert Atchinson, individually | |
| Phillip Gross | 9.9% | 8,800,000 | 0 | 8,800,000 | /s/ Phillip Gross | Phillip Gross, individually |