COMPASS Pathways plc
CMPS- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001816590
No open-market purchases or sales by COMPASS Pathways plc insiders were filed in the last 90 days; 224 institutions reported holding it in 13F filings for Q2 2026, worth $1.28B in total; ARK Invest is the only superinvestor holding it.
Holders of 5% or more of CMPS
Holders whose latest Schedule 13D or 13G filing reports 5% or more of COMPASS Pathways plc, largest stake first. The change is against the holder's previous filing.
| Holder | Latest form | Stake | Change | First filed | Latest filing | Filing |
|---|---|---|---|---|---|---|
| Deep Track Capital, LP | 13G | 9.99%9.27M shares | New | Jan 17, 20251 filing | Jan 17, 2025 | SEC |
| RTW Investments, LP | 13G/A | 9.90%9.47M shares | +1.60 ppfrom 8.30% | May 15, 20252 filings | Aug 14, 2025 | SEC |
| ATAI Life Sciences N.V. | 13D/A | 6.00%5.79M shares | −1.50 ppfrom 7.50% | Mar 5, 20252 filings | Oct 29, 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
16 Schedule 13D and 13G filings on COMPASS Pathways plc, newest first, including old-format filings without a stake.
| Filed (ET) | Filer | Form | Stake | Change | Event date | Filing |
|---|---|---|---|---|---|---|
| Feb 17, 20264:46 PM ET | AtaiBeckley Inc. | 13D/A | 4.96%4.76M shares | –Below 5% | Jan 21, 2026 | SEC |
| Nov 14, 20256:37 PM ET | Vivo Opportunity Fund Holdings, L.P.and 3 others | 13G/A | 3.20%3.17M shares | −3.40 ppfrom 6.60%Below 5% | Sep 30, 2025 | SEC |
| Nov 14, 20254:37 PM ET | Nantahala Capital Management, LLCand 2 others | 13G/A | 3.57%3.48M shares | −2.66 ppfrom 6.23%Below 5% | Sep 30, 2025 | SEC |
| Oct 29, 20256:15 PM ET | ATAI Life Sciences N.V.and 1 other | 13D/A | 6.00%5.79M shares | −1.50 ppfrom 7.50% | Oct 27, 2025 | SEC |
| Aug 14, 20255:35 PM ET | RTW Investments, LPand 1 other | 13G/A | 9.90%9.47M shares | +1.60 ppfrom 8.30% | Jun 30, 2025 | SEC |
| Aug 14, 20255:09 PM ET | TCG Crossover GP I, LLCand 4 others | 13G/A | 3.90%3.86M shares | –Below 5% | Jun 30, 2025 | SEC |
| Aug 14, 20254:40 PM ET | Nantahala Capital Management, LLCand 2 others | 13G | 6.23%5.93M shares | New | Jun 30, 2025 | SEC |
| May 15, 20258:32 AM ET | Vivo Opportunity Fund Holdings, L.P.and 3 others | 13G/A | 6.60%6.35M shares | – | Mar 31, 2025 | SEC |
| May 15, 20258:00 AM ET | RTW Investments, LPand 1 other | 13G | 8.30%7.88M shares | New | Mar 31, 2025 | SEC |
| May 7, 20254:00 PM ET | Integrated Core Strategies (US) LLCand 3 others | 13G/A | 3.00%2.77M shares | −0.70 ppfrom 3.70%Below 5% | Mar 31, 2025 | SEC |
| Apr 15, 20258:24 AM ET | Goldsmith George Jayand 1 other | 13G/A | 2.40%2.24M shares | −0.20 ppfrom 2.60%Below 5% | Mar 31, 2025 | SEC |
| Mar 5, 20254:36 PM ET | ATAI Life Sciences N.V.and 1 other | 13D/A | 7.50%6.91M shares | – | Mar 5, 2025 | SEC |
| Feb 14, 20256:32 PM ET | Citadel Advisors LLCand 6 others | 13G/A | 1.70%1.17M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 13, 20259:42 PM ET | Goldsmith George Jayand 1 other | 13G/A | 2.60%2.37M shares | –Below 5% | Dec 31, 2024 | SEC |
| Feb 6, 20254:07 PM ET | Integrated Core Strategies (US) LLCand 3 others | 13G/A | 3.70%3.41M shares | –Below 5% | Dec 31, 2024 | SEC |
| Jan 17, 20254:02 PM ET | Deep Track Capital, LPand 2 others | 13G | 9.99%9.27M shares | New | Jan 10, 2025 | SEC |
Form 144: proposed insider sales
Notices from officers, directors and other affiliates planning to sell COMPASS Pathways plc shares.
No Form 144 notices for COMPASS Pathways plc are on file.