Alpha Cognition Inc.
ACOG- Exchange
- Nasdaq
- Industry
- Biological Products, (No Diagnostic Substances)
- SEC CIK
- 0001655923
In the last 90 days, Alpha Cognition Inc. insiders filed 5 open-market purchases and 0 sales; 26 institutions reported holding it in 13F filings for Q2 2026, worth $75.7M in total; no superinvestor holds it.
Holders of 5% or more of ACOG
Holders whose latest Schedule 13D or 13G filing reports 5% or more of Alpha Cognition Inc., largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Opaleye Management Inc. | 13G | 8.97%1.88M shares | New | Oct 3, 20251 filing | Oct 3, 2025 | SEC |
| Solas Capital Management, LLC | 13G | 8.70%1.39M shares | New | Feb 14, 20251 filing | Feb 14, 2025 | SEC |
| AWM Investment Company, Inc. | 13G/A | 6.50%1.04M shares | −0.60 ppfrom 7.10% | Feb 13, 20252 filings | Feb 13, 2025 | SEC |
| Besser James E | 13G | 6.20%1.00M shares | New | Jan 31, 20251 filing | Jan 31, 2025 | SEC |
| Ikarian Capital, LLC | 13G | 6.00%967.9K shares | New | Feb 14, 20251 filing | Feb 14, 2025 | SEC |
| Funicular Funds, LP | 13G | 5.40%868.4K shares | New | Apr 16, 20251 filing | Apr 16, 2025 | SEC |
Stakes are as of each holder's latest filing. Holders whose last filing was in the old format (before December 18, 2024) have no stake on record and are not listed, and after an acquisition or delisting holders usually stop filing.
13D and 13G filings
7 Schedule 13D and 13G filings on Alpha Cognition Inc., newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Oct 3, 20254:05 PM ET | Opaleye Management Inc.and 2 others | 13G | 8.97%1.88M shares | New | Oct 1, 2025 | SEC |
| Apr 16, 20253:18 PM ET | Funicular Funds, LPand 2 others | 13G | 5.40%868.4K shares | New | Apr 9, 2025 | SEC |
| Feb 14, 20251:07 PM ET | Ikarian Capital, LLCand 1 other | 13G | 6.00%967.9K shares | New | Dec 31, 2024 | SEC |
| Feb 14, 202512:54 PM ET | Solas Capital Management, LLCand 1 other | 13G | 8.70%1.39M shares | New | Dec 31, 2024 | SEC |
| Feb 13, 20253:50 PM ET | AWM Investment Company, Inc. | 13G/A | 6.50%1.04M shares | −0.60 ppfrom 7.10% | Dec 31, 2024 | SEC |
| Feb 13, 20253:39 PM ET | AWM Investment Company, Inc. | 13G | 7.10%606.1K shares | New | Dec 31, 2024 | SEC |
| Jan 31, 20256:17 PM ET | Besser James Eand 1 other | 13G | 6.20%1.00M shares | New | Jan 15, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell Alpha Cognition Inc. shares.
No Form 144 notices for Alpha Cognition Inc. are on file.