As of September 29, 2026, Solid Biosciences's top three insider holders are Advisors Llc Perceptive (Director, 11.83Mn shares), Capital Life Sciences Investors, Llc Bain (TenPercentOwner, 5.03Mn shares), Capital Management, L.P. Adage (TenPercentOwner, 4.25Mn shares).
| # | Insider | Position | Direct | Indirect | Total | Share of Insiders | Last Filed |
|---|---|---|---|---|---|---|---|
| 1 | Advisors Llc Perceptive | Director, TenPercentOwner | 0 | 11,833,539 | 11,833,539 | 39.1% | 21 Feb, 2025 |
| 2 | Capital Life Sciences Investors, Llc Bain | TenPercentOwner | 0 | 5,034,582 | 5,034,582 | 16.7% | 21 Feb, 2025 |
| 3 | Capital Management, L.P. Adage | TenPercentOwner | 0 | 4,248,084 | 4,248,084 | 14.0% | 19 Feb, 2025 |
| 4 | Capital Management, L.P. Ra | Director, TenPercentOwner | 0 | 4,192,216 | 4,192,216 | 13.9% | 12 Jan, 2024 |
| 5 | Adam Koppel | Director, TenPercentOwner | 0 | 4,034,582 | 4,034,582 | 13.3% | 12 Jan, 2024 |
| 6 | Alexander Cumbo | President And Ceo | 235,405 | 0 | 235,405 | 0.8% | 18 Feb, 2026 |
| 7 | Ian F Smith | Director | 138,145 | 0 | 138,145 | 0.5% | 07 Jul, 2026 |
| 8 | David T Howton | Chief Operating Officer | 105,077 | 0 | 105,077 | 0.3% | 18 Feb, 2026 |
| 9 | Kevin Tan | Cfo Treasurer | 99,422 | 0 | 99,422 | 0.3% | 18 Feb, 2026 |
| 10 | Gabriel Brooks | Chief Medical Officer | 95,029 | 0 | 95,029 | 0.3% | 18 Feb, 2026 |
| 11 | Jessie Hanrahan | Chief Regulatory Officer | 74,318 | 0 | 74,318 | 0.2% | 18 Feb, 2026 |
| 12 | Paul Herzich | Chief Technology Officer | 72,638 | 0 | 72,638 | 0.2% | 18 Feb, 2026 |
| 13 | Ilan Ganot | Ceo President | 0 | 27,474 | 27,474 | 0.1% | 18 Feb, 2026 |
| 14 | Carl Ashley Morris | Chief Scientific Officer | 19,760 | 0 | 19,760 | 0.1% | 31 Jan, 2023 |
| 15 | Joel Solomon Zev Schneider | Chief Operating Officer | 15,752 | 0 | 15,752 | 0.1% | 15 Mar, 2022 |
| 16 | Jennifer Marlowe | Cso | 6,998 | 0 | 6,998 | 0.0% | 05 Dec, 2023 |
| 17 | Clare Kahn | Director | 2,960 | 0 | 2,960 | 0.0% | 13 Mar, 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 |
|---|---|---|---|---|---|---|---|---|
| 02 Jul, 2026 | Ian F Smith | Director | Acquired M | 3,440 | — | — | 138,145 | Direct |
| 02 Jul, 2026 | Ian F Smith | Director | Disposed M | 3,440 | $0.00 | $0 | 6,880 | Direct |
| 10 Jun, 2026 | Lynne Marie Sullivan | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Adam Leo Stone | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Ian F Smith | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Martin I Freed | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Georgia Keresty | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Advisors Llc Perceptive | Director, TenPercentOwner | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Indirect |
| 10 Jun, 2026 | Sukumar Nagendran | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Clare Kahn | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 10 Jun, 2026 | Ilan Ganot | Director | Acquired A | 77,500 | $0.00 | $0 | 77,500 | Direct |
| 02 Apr, 2026 | Ian F Smith | Director | Acquired M | 3,441 | — | — | 134,705 | Direct |
| 02 Apr, 2026 | Ian F Smith | Director | Disposed M | 3,441 | $0.00 | $0 | 10,320 | Direct |
| 09 Mar, 2026 | Advisors Llc Perceptive | Director, TenPercentOwner | Acquired A | 8,912,655 | $5.61 | $49.99Mn | 8,912,655 | Indirect |
| 13 Feb, 2026 | Ilan Ganot | Director | Acquired M | 4,861 | — | — | 30,132 | Indirect |
| 13 Feb, 2026 | Kevin Tan | Cfo Treasurer | Acquired M | 10,625 | — | — | 104,826 | Direct |
| 13 Feb, 2026 | Alexander Cumbo | President And Ceo | Acquired M | 30,031 | — | — | 252,049 | Direct |
| 13 Feb, 2026 | David T Howton | Chief Operating Officer | Acquired M | 14,687 | — | — | 112,546 | Direct |
| 13 Feb, 2026 | Jessie Hanrahan | Chief Regulatory Officer | Acquired M | 8,125 | — | — | 78,452 | Direct |
| 13 Feb, 2026 | Paul Herzich | Chief Technology Officer | Acquired M | 7,187 | — | — | 76,254 | Direct |