Fulcrum Therapeutics Inc
Ownership
Ownership Structure
Who owns Fulcrum Therapeutics Inc (FULC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 83.1% of the shares are freely tradable; institutional investors hold 116.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Nantahala Capital Management, LLC | 14.34 | 10,950,080 | +259.0 | 06/30/2026 |
| BlackRock Inc | 11.55 | 8,824,259 | +63.7 | 06/30/2026 |
| EcoR1 Capital, LLC | 8.58 | 6,549,866 | +0.0 | 06/30/2026 |
| TANG CAPITAL MANAGEMENT LLC | 8.54 | 6,521,412 | +0.0 | 06/30/2026 |
| Suvretta Capital Management, LLC | 4.82 | 3,680,921 | -43.9 | 06/30/2026 |
| D. E. Shaw & Co LP | 3.99 | 3,044,385 | +87.5 | 06/30/2026 |
| Citadel Advisors Llc | 3.54 | 2,704,505 | +109.2 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.53 | 2,697,216 | +0.2 | 06/30/2026 |
| Jane Street Group LLC | 2.90 | 2,217,498 | +614.4 | 06/30/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Vanguard MStar Total Stk Mkt Idx Invest | 2.72 | 2,074,332 | +0.0 | 09/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Tang Kevin | 10% Owner | 7,080,945 | 26,199,497 $ | Jul 17, 2026 | indirect |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Jul 17, 2026 | Tang Kevin | 10% Owner | Buy | 50,945 | 3.52 | 179,326 |
| Jul 16, 2026 | Tang Kevin | 10% Owner | Buy | 116,671 | 3.56 | 415,349 |
| Jul 15, 2026 | Tang Kevin | 10% Owner | Buy | 107,377 | 3.56 | 382,262 |
| Jul 14, 2026 | Tang Kevin | 10% Owner | Buy | 75,952 | 3.58 | 271,908 |
| Jul 14, 2026 | Tang Kevin | 10% Owner | Buy | 53,651 | 3.56 | 190,998 |
| Jul 13, 2026 | Tang Kevin | 10% Owner | Buy | 12,966 | 3.54 | 45,900 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: October 30, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.