COMPASS Pathways plc
COMPASS Pathways plc (CMPS) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · CMPS · as of Sep 30, 2024
Ownership Breakdown
140
Institutional Holders
▲ 9 vs Q2
$206.45M
Total Inst. Value
▲ $34.68M vs Q2
96.09M
Shares Outstanding
freeFloat 97.32%
32.77M
13F Shares Held
▲ 4.34M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
CMPS largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
CITADEL ADVISORS LLC pharmaceutical preparations | 5.41M | 7.92% | 7.92% | $34.11B | Nov 14, 2024 | ▲ 1.75M |
TCG CROSSOVER MANAGEMENT, LLC pharmaceutical preparations | 3.86M | 5.64% | 5.64% | $24.31B | Nov 14, 2024 | — held |
MILLENNIUM MANAGEMENT LLC pharmaceutical preparations | 3.76M | 5.49% | 5.49% | $23.67B | Nov 14, 2024 | ▲ 374.6K |
ARK INVESTMENT MANAGEMENT LLC pharmaceutical preparations | 2.01M | 2.93% | 2.93% | $12.63B | Oct 31, 2024 | ▼ 95.4K |
VIVO CAPITAL, LLC pharmaceutical preparations | 1.61M | 2.35% | 2.35% | $10.13B | Nov 13, 2024 | — held |
GMT CAPITAL CORP pharmaceutical preparations | 1.55M | 2.26% | 2.26% | $9.75B | Nov 14, 2024 | NEW |
PARADIGM BIOCAPITAL ADVISORS LP pharmaceutical preparations | 1.16M | 1.70% | 1.70% | $7.31B | Nov 14, 2024 | ▼ 1.18M |
LOGOS GLOBAL MANAGEMENT LP pharmaceutical preparations | 1.16M | 1.69% | 1.69% | $7.30B | Nov 14, 2024 | — held |
MORGAN STANLEY pharmaceutical preparations | 1.00M | 1.46% | 1.46% | $6.30B | May 14, 2025 | ▲ 918.1K |
AISLING CAPITAL MANAGEMENT LP pharmaceutical preparations | 964.5K | 1.41% | 1.41% | $6.08B | Nov 13, 2024 | — held |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
18
Increased
+5.28M shares7
New Positions
first time holders15
Decreased
−2.73M shares0
Sold Out
fully exitedNet shares change (top 50)
+2.55M
+5.28M / −2.73M
Net new holders
+10
7 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
CMPS insider trading · insider activity
Source: SEC Form 4
8
Buy transactions
0
Sell transactions
0.00
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Karydas Daphne director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
SANTINI GINO director | May 27, 2026 | Award | 30,158 | $11.85 | $357.4K | 30.2K | Form 4 ↗ |
Gover Justin D. director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
JONAS JEFFREY M director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
Riley Wayne Joseph director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
McQuade Robert director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
Norton David Y director | May 27, 2026 | Award | 21,110 | $11.85 | $250.2K | 21.1K | Form 4 ↗ |
Tregoning Kathleen director | May 27, 2026 | Award | 41,119 | $11.85 | $487.3K | 41.1K | Form 4 ↗ |
Nath Kabir Chief Executive Officer | Mar 26, 2026 | Award | 367,815 | $5.64 | $2.07M | 367.8K | Form 4 ↗ |
Nath Kabir Chief Executive Officer | Mar 26, 2026 | Award | 175,000 | — | — | 367.0K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
COMPASS Pathways plc (CMPS) is primarily owned by institutional investors, who hold approximately 34.1% of total shares outstanding. Company insiders own approximately 2.68%, while retail and public investors account for the remaining 63.21%.
The largest institutional shareholder of COMPASS Pathways plc is CITADEL ADVISORS LLC, holding approximately 5.41 million shares — equal to 7.92% of outstanding shares — as of September 30, 2024.
A total of 140 institutional investors currently hold CMPS stock, with a combined institutional value of approximately $206,454,265 as of the most recent 13F filing period.
Frequently asked questions
CMPS ownershipCOMPASS Pathways plc (CMPS) is primarily owned by institutional investors, who hold approximately 34.1% of shares. The largest shareholder is CITADEL ADVISORS LLC with a 7.92% stake. Company insiders hold 2.68%. Data sourced from SEC Form 13F as of September 30, 2024.