As of May 22, 2026, the three largest insider holders of SLDB are Advisors Llc Perceptive (Director, 11.83Mn shares), Advisors Llc Perceptive (Director, 11.83Mn shares), Advisors Llc Perceptive (Director, 11.83Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Advisors Llc Perceptive | - | 0 | 11,833,539 | 21 Feb, 2025 |
| Capital Life Sciences Investors, Llc Bain | - | 0 | 5,034,582 | 21 Feb, 2025 |
| Capital Management, L.P. Adage | - | 0 | 4,248,084 | 19 Feb, 2025 |
| Capital Management, L.P. Ra | - | 0 | 4,192,216 | 12 Jan, 2024 |
| Adam Koppel | - | 0 | 4,034,582 | 12 Jan, 2024 |
| Joel Solomon Zev Schneider | Chief Operating Officer | 236,270 | 0 | 15 Mar, 2022 |
| Alexander Cumbo | President And Ceo | 235,405 | 0 | 18 Feb, 2026 |
| Ian F Smith | - | 134,705 | 0 | 02 Apr, 2026 |
| David T Howton | Chief Operating Officer | 105,077 | 0 | 18 Feb, 2026 |
| Kevin Tan | Cfo Treasurer | 99,422 | 0 | 18 Feb, 2026 |
| Ilan Ganot | Ceo President | 99,297 | 0 | 29 Jan, 2026 |
| Gabriel Brooks | Chief Medical Officer | 95,029 | 0 | 18 Feb, 2026 |
| Jessie Hanrahan | Chief Regulatory Officer | 74,318 | 0 | 18 Feb, 2026 |
| Advisors Llc Perceptive | - | 0 | 73,107 | 06 Dec, 2022 |
| Paul Herzich | Chief Technology Officer | 72,638 | 0 | 18 Feb, 2026 |
| Ilan Ganot | Ceo President | 0 | 27,474 | 18 Feb, 2026 |
| Carl Ashley Morris | Chief Scientific Officer | 19,760 | 0 | 31 Jan, 2023 |
| Jennifer Marlowe | Cso | 6,998 | 0 | 05 Dec, 2023 |
| Clare Kahn | - | 2,960 | 0 | 13 Mar, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 02 Apr, 2026 | Ian F Smith | Common Stock | A | 3,441 | - | 134,705 | D | M |
| 02 Apr, 2026 | Ian F Smith | Restricted Stock Units | D | 3,441 | $0.00 | 10,320 | D | M |
| 09 Mar, 2026 | Advisors Llc Perceptive | Pre-Funded Warrant (right to buy) | A | 8,912,655 | $5.61 | 8,912,655 | I | A |
| 13 Feb, 2026 | Gabriel Brooks | Common Stock | A | 10,937 | - | 95,029 | D | M |
| 13 Feb, 2026 | Ilan Ganot | Common Stock | A | 4,861 | - | 30,132 | I | M |
| 13 Feb, 2026 | Jessie Hanrahan | Common Stock | A | 8,125 | - | 78,452 | D | M |
| 13 Feb, 2026 | Paul Herzich | Common Stock | A | 7,187 | - | 76,254 | D | M |
| 13 Feb, 2026 | Alexander Cumbo | Common Stock | A | 30,031 | - | 252,049 | D | M |
| 13 Feb, 2026 | Kevin Tan | Common Stock | A | 10,625 | - | 104,826 | D | M |
| 13 Feb, 2026 | David T Howton | Common Stock | A | 14,687 | - | 112,546 | D | M |
| 18 Feb, 2026 | Jessie Hanrahan | Common Stock | D | 4,134 | $5.82 | 74,318 | D | S |
| 18 Feb, 2026 | Ilan Ganot | Common Stock | D | 2,658 | $5.82 | 27,474 | I | S |
| 18 Feb, 2026 | Alexander Cumbo | Common Stock | D | 16,644 | $5.82 | 235,405 | D | S |
| 18 Feb, 2026 | Paul Herzich | Common Stock | D | 3,616 | $5.82 | 72,638 | D | S |
| 18 Feb, 2026 | Kevin Tan | Common Stock | D | 5,404 | $5.82 | 99,422 | D | S |
| 18 Feb, 2026 | David T Howton | Common Stock | D | 7,469 | $5.82 | 105,077 | D | S |
| 13 Feb, 2026 | Alexander Cumbo | Restricted Stock Units | D | 30,031 | $0.00 | 60,063 | D | M |
| 13 Feb, 2026 | Gabriel Brooks | Restricted Stock Units | D | 10,937 | $0.00 | 21,876 | D | M |
| 13 Feb, 2026 | Paul Herzich | Restricted Stock Units | D | 7,187 | $0.00 | 14,376 | D | M |
| 13 Feb, 2026 | Kevin Tan | Restricted Stock Units | D | 10,625 | $0.00 | 21,250 | D | M |