Fulcrum Therapeutics's three largest insider shareholders as of September 29, 2026 are Capital Management, L.P. Ra (TenPercentOwner, 11.61Mn shares), Kevin Tang (TenPercentOwner, 7.08Mn shares), Capital Management, L.P. Ra (TenPercentOwner, 6.05Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Kevin Tang | TenPercentOwner | 0 | 7,080,945 | 7,080,945 | 35.9% | 20 Jul, 2026 |
| 2 | Capital Management, L.P. Ra | TenPercentOwner | 0 | 6,053,960 | 6,053,960 | 30.7% | 10 Dec, 2025 |
| 3 | Mark J Levin | Director, TenPercentOwner | 0 | 3,962,202 | 3,962,202 | 20.1% | 12 Nov, 2021 |
| 4 | Rock Ventures Iii, L.P. Third | TenPercentOwner | 1,962,202 | 0 | 1,962,202 | 9.9% | 15 Dec, 2022 |
| 5 | Robert J Gould | Interim President Ceo | 454,864 | 0 | 454,864 | 2.3% | 04 Feb, 2026 |
| 6 | Alex Sapir | Director, Officer | 193,360 | 0 | 193,360 | 1.0% | 08 Jul, 2024 |
| 7 | Greg Tourangeau | Principal Accounting Officer | 14,062 | 0 | 14,062 | 0.1% | 09 May, 2025 |
| 8 | Alan Ezekowitz | Director | 10,927 | 0 | 10,927 | 0.1% | 30 Jun, 2026 |
| 9 | Curtis Gale Oltmans | Chief Legal Officer | 10,252 | 0 | 10,252 | 0.1% | 17 Dec, 2025 |
Each row is that insider’s most recently reported position, from Form 4 filings over the last 60 months — which is why this total does not tie to the quarterly series above, where a quarter counts only the insiders who filed in it. Shares held through a fund or institutional portfolio are counted on the institutional ownership page instead.
| Date | Insider | Position | Transaction | Shares | Price | Value | Shares Held After | Ownership |
|---|---|---|---|---|---|---|---|---|
| 16 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 116,671 | $3.56 | $415.35K | 7,030,000 | Indirect |
| 17 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 50,945 | $3.52 | $179.33K | 7,080,945 | Indirect |
| 13 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 12,966 | $3.54 | $45.90K | 6,676,349 | Indirect |
| 14 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 53,651 | $3.56 | $191.00K | 6,730,000 | Indirect |
| 14 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 75,952 | $3.58 | $271.91K | 6,805,952 | Indirect |
| 15 Jul, 2026 | Kevin Tang | TenPercentOwner | Acquired P | 107,377 | $3.56 | $382.26K | 6,913,329 | Indirect |
| 30 Jun, 2026 | Katina Dorton | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Alan Ezekowitz | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | James A Geraghty | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Colin Hill | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Kate Haviland | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Robert J Gould | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Rachel K. King | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 30 Jun, 2026 | Sonja Banks | Director | Acquired A | 32,000 | $0.00 | $0 | 32,000 | Direct |
| 26 Jun, 2026 | Alan Ezekowitz | Director | Disposed S | 18,000 | $3.65 | $65.61K | 10,927 | Direct |
| 23 Apr, 2026 | Joshua Lehrer-Graiwer | Director | Acquired A | 64,000 | $0.00 | $0 | 64,000 | Direct |
| 02 Feb, 2026 | Robert J Gould | Director | Disposed S | 15,000 | $10.72 | $160.86K | 454,864 | Direct |
| 02 Feb, 2026 | Greg Tourangeau | Principal Accounting Officer | Acquired A | 57,000 | $0.00 | $0 | 57,000 | Direct |
| 02 Feb, 2026 | Alan A Musso | Chief Financial Officer | Acquired A | 170,000 | $0.00 | $0 | 170,000 | Direct |
| 02 Jan, 2026 | Robert J Gould | Director | Disposed S | 15,000 | $10.87 | $163.09K | 469,864 | Direct |