SEC Form 4 · Updated Daily
SLDB
— SOLID BIOSCIENCES INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P. | 10%+ Owner · Director | 11,897,896 | 2026-06-22 | — |
| Kolchinsky Peter | 10%+ Owner · Director | 11,897,896 | 2026-06-22 | — |
| Shah Rajeev M. | 10%+ Owner · Director | 11,897,896 | 2026-06-22 | — |
| RA Capital Healthcare Fund LP | 10%+ Owner · Director | 11,897,896 | 2026-06-22 | — |
| PERCEPTIVE ADVISORS LLC | 10%+ Owner | 11,833,539 | 2025-02-19 | P |
| Perceptive Xontogeny Venture Fund, LP | 10%+ Owner · Director | 11,833,539 | 2025-02-19 | P |
| EDELMAN JOSEPH | 10%+ Owner | 11,833,539 | 2025-02-19 | P |
| PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | 10%+ Owner | 11,833,539 | 2025-02-19 | P |
| Ultragenyx Pharmaceutical Inc. | 10%+ Owner · Director | 7,825,797 | 2020-10-22 | — |
| BCLS SB Investco, LP | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| Bain Capital Life Sciences Investors II, LLC | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| Bain Capital Life Sciences Fund II, L.P. | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| BCLS II Investco, LP | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| Bain Capital Life Sciences Partners, LP | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| BCLS II Investco (GP), LLC | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| BCIP Life Sciences Associates, LP | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| Bain Capital Life Sciences Investors, LLC | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| BCLS II Equity Opportunities, LP | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| BCLS II Equity Opportunities GP, LLC | 10%+ Owner | 5,034,582 | 2025-02-19 | P |
| Gross Phillip | 10%+ Owner | 4,248,084 | 2025-02-18 | P |
| Adage Capital Management, L.P. | 10%+ Owner | 4,248,084 | 2025-02-18 | P |
| Atchinson Robert | 10%+ Owner | 4,248,084 | 2025-02-18 | P |
| RA Capital Nexus Fund, L.P. | 10%+ Owner · Director | 4,192,216 | 2024-01-11 | P |
| Koppel Adam | 10%+ Owner · Director | 4,034,582 | 2024-01-11 | A |
| Arnold Matthew Bennett | Director | 3,933,429 | 2020-12-10 | A |
| LEWIS JOSEPH | 10%+ Owner | 3,923,272 | 2019-03-04 | — |
| Braslyn Ltd. | 10%+ Owner | 3,923,272 | 2019-03-04 | — |
| MVA Investors, LLC | 10%+ Owner | 3,923,272 | 2019-03-04 | — |
| Boxer Asset Management Inc. | 10%+ Owner | 3,923,272 | 2019-03-04 | — |
| Boxer Capital, LLC | 10%+ Owner | 3,648,272 | 2019-03-26 | S |
| Perceptive Venture Advisors, LLC | 10%+ Owner · Director | 3,422,826 | 2022-12-02 | A |
| JPMC Strategic Investments II Corp | Reporting Owner | 3,031,601 | 2018-01-25 | — |
| JPMORGAN CHASE & CO | 10%+ Owner | 3,031,601 | 2018-01-25 | — |
| Hayeem Gilad David | 10%+ Owner | 1,948,991 | 2018-08-22 | G |
| Ziolkowski Jennifer Lynn | Officer | 339,109 | 2021-01-27 | M |
| Quiroz Jorge Armando | Officer | 267,042 | 2018-12-03 | S |
| Cumbo Alexander | Director · Officer | 252,049 | 2026-02-13 | M |
| Schneider Joel Solomon Zev | Officer | 251,542 | 2022-03-14 | S |
| Amorrortu Pedro Alvaro | Officer | 168,739 | 2018-12-03 | S |
| HERSCHA LYNETTE | Officer | 166,000 | 2020-07-27 | M |
| SMITH IAN F | Director | 141,585 | 2026-10-02 | M |
| Howton David T | Officer | 112,546 | 2026-02-13 | M |
| Tan Kevin | Officer | 104,826 | 2026-02-13 | M |
| Brooks Gabriel | Officer | 101,615 | 2026-10-18 | M |
| Hanrahan Jessie | Officer | 78,452 | 2026-02-13 | M |
| Herzich Paul | Officer | 76,254 | 2026-02-13 | M |
| Freed Martin I | Director | 53,763 | 2019-07-25 | A |
| Nagendran Sukumar | Director | 34,258 | 2019-07-25 | A |
| Ganot Ilan | Director | 30,132 | 2026-02-13 | M |
| Morris Carl Ashley | Officer | 20,201 | 2023-01-27 | M |
| Marlowe Jennifer | Officer | 11,888 | 2023-12-02 | M |
| Zarur Juan Andrey | Director | 10,189 | 2019-05-08 | S |
| Kahn Clare | Director | 2,960 | 2025-03-11 | P |
| Stone Adam Leo | Director | 0 | 2018-01-25 | — |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-19 | Brooks Gabriel | Open-market sale | 4,374 | $5.62 | 97,241 |
| 2026-10-18 | Brooks Gabriel | Option exercise (derivative) | 9,750 | $0.00 | 9,750 |
| 2026-10-18 | Brooks Gabriel | Option exercise | 9,750 | — | 101,615 |
| 2026-10-02 | SMITH IAN F | Option exercise (derivative) | 3,440 | $0.00 | 3,440 |
| 2026-10-02 | SMITH IAN F | Option exercise | 3,440 | — | 141,585 |
| 2026-10-01 | Ganot Ilan | Grant / award (derivative) | 150,000 | $0.00 | 150,000 |
| 2026-07-02 | SMITH IAN F | Option exercise (derivative) | 3,440 | $0.00 | 6,880 |
| 2026-07-02 | SMITH IAN F | Option exercise | 3,440 | — | 138,145 |
| 2026-06-22 | RA CAPITAL MANAGEMENT, L.P. | — | — | — | 109,661 |
| 2026-06-22 | RA CAPITAL MANAGEMENT, L.P. | — | — | — | 28,569 |
| 2026-06-22 | RA CAPITAL MANAGEMENT, L.P. | — | — | — | 11,897,896 |
| 2026-06-22 | Shah Rajeev M. | — | — | — | 109,661 |
| 2026-06-22 | Shah Rajeev M. | — | — | — | 28,569 |
| 2026-06-22 | Shah Rajeev M. | — | — | — | 11,897,896 |
| 2026-06-22 | RA Capital Healthcare Fund LP | — | — | — | 109,661 |
| 2026-06-22 | RA Capital Healthcare Fund LP | — | — | — | 28,569 |
| 2026-06-22 | RA Capital Healthcare Fund LP | — | — | — | 11,897,896 |
| 2026-06-22 | Kolchinsky Peter | — | — | — | 109,661 |
| 2026-06-22 | Kolchinsky Peter | — | — | — | 28,569 |
| 2026-06-22 | Kolchinsky Peter | — | — | — | 11,897,896 |
| 2026-06-10 | Stone Adam Leo | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Sullivan Lynne Marie | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Kahn Clare | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Freed Martin I | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Keresty Georgia | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | EDELMAN JOSEPH | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | PERCEPTIVE ADVISORS LLC | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Ganot Ilan | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | SMITH IAN F | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-06-10 | Nagendran Sukumar | Grant / award (derivative) | 77,500 | $0.00 | 77,500 |
| 2026-04-02 | SMITH IAN F | Option exercise (derivative) | 3,441 | $0.00 | 10,320 |
| 2026-04-02 | SMITH IAN F | Option exercise | 3,441 | — | 134,705 |
| 2026-03-09 | PERCEPTIVE LIFE SCIENCES MASTER FUND LTD | Grant / award (derivative) | 8,912,655 | $5.61 | 8,912,655 |
| 2026-03-09 | EDELMAN JOSEPH | Grant / award (derivative) | 8,912,655 | $5.61 | 8,912,655 |
| 2026-03-09 | PERCEPTIVE ADVISORS LLC | Grant / award (derivative) | 8,912,655 | $5.61 | 8,912,655 |
| 2026-02-18 | Tan Kevin | Open-market sale | 5,404 | $5.82 | 99,422 |
| 2026-02-18 | Brooks Gabriel | Open-market sale | 0 | $5.82 | 89,466 |
| 2026-02-18 | Howton David T | Open-market sale | 7,469 | $5.82 | 105,077 |
| 2026-02-18 | Herzich Paul | Open-market sale | 3,616 | $5.82 | 72,638 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.