SLDB insider buying – Solid Biosciences Inc.
11 insider purchases since 2016 worth $128.1M by 9 different insiders. Last 12 months: 0 purchases, $0. Most recent filing: 2025-02-21.
Same time range as the chart above - each mark sits under the week of the trade. Circles = purchases (height = price paid, size = amount), red triangles = open-market sales of $50k+. Prices as reported, not adjusted for later stock splits. 6 older purchases (before the 5-year window) are listed in the table below.
Purchases are open-market buys (SEC Form 4, code "P") - insiders paying with their own money. Sales are open-market sales (code "S") of $50,000 or more; many sales are pre-planned (Rule 10b5-1) or made for taxes and diversification. Each row links to the original filing.
Bought, sold, still holding?
| Insider | Bought | First / last buy | Sold since 2016 | Holds now* | Status |
|---|---|---|---|---|---|
| EDELMAN JOSEPH Director | $35.1M 2× · 7,608,695 sh | 2021-03-23 2025-02-19 | – | 11,833,539 shares as of 2025-02-21 | Holds - never sold |
| PERCEPTIVE ADVISORS LLC Director | $29.7M 2× · 3,842,581 sh | 2018-01-30 2019-07-25 | – | 6,749,803 shares as of 2019-07-29 | Holds - never sold |
| Perceptive Xontogeny Venture Fund, LP Director | $18.9M 1× · 3,410,713 sh | 2024-01-11 2024-01-11 | – | 6,833,539 shares as of 2024-01-12 | Holds - never sold |
| Shah Rajeev M. Director | $16.0M 1× · 1,000,000 sh | 2018-01-30 2018-01-30 | – | 8,709,882 shares as of 2020-12-14 | Holds - never sold |
| Kolchinsky Peter Director | $12.7M 1× · 2,206,685 sh | 2021-03-19 2021-03-19 | – | 10,916,567 shares as of 2021-03-23 | Holds - never sold |
| RA Capital Nexus Fund, L.P. Director | $5.0M 1× · 904,160 sh | 2024-01-11 2024-01-11 | – | 4,192,216 shares as of 2024-01-12 | Holds - never sold |
| Koppel Adam Director | $4.8M 1× · 300,000 sh | 2018-01-30 2018-01-30 | – | 4,034,582 shares as of 2024-01-12 | Holds - never sold |
| BCLS SB Investco, LP 10% Owner | $4.0M 1× · 1,000,000 sh | 2025-02-19 2025-02-19 | – | 5,034,582 shares as of 2025-02-21 | Holds - never sold |
| Atchinson Robert 10% Owner | $1.9M 1× · 252,545 sh | 2025-02-18 2025-02-18 | – | 4,248,084 shares as of 2025-02-19 | Holds - never sold |
* Shares held after the insider's most recent SEC filing for this company (all share classes, direct and indirect). If an insider stops filing, later changes are not known.
Insider buying and selling by year
| Year | Purchases | Bought | Buyers | Sales | Sold |
|---|---|---|---|---|---|
| 2026 | 0 | – | – | 13 | $2.3M |
| 2025 | 3 | $26.1M | 3 | 1 | $55,229 |
| 2024 | 2 | $23.9M | 2 | 1 | $62,238 |
| 2021 | 2 | $27.7M | 2 | 3 | $479,571 |
| 2019 | 1 | $13.1M | 1 | 5 | $5.1M |
| 2018 | 3 | $37.3M | 3 | 5 | $4.0M |
Insider purchases
| Filed | Insider | Role | Shares | Avg price | Value | Holdings | Filing |
|---|---|---|---|---|---|---|---|
| 2025-02-21 | EDELMAN JOSEPH | Director | 5,000,000 | $4.03 | $20.1M | +73.2% | SEC |
| 2025-02-21 | BCLS SB Investco, LP | 10% Owner | 1,000,000 | $4.03 | $4.0M | +24.8% | SEC |
| 2025-02-19 | Atchinson Robert | 10% Owner | 252,545 | $7.56 | $1.9M | +6.3% | SEC |
| 2024-01-12 | RA Capital Nexus Fund, L.P. | Director | 904,160 | $5.53 | $5.0M | +27.5% | SEC |
| 2024-01-12 | Perceptive Xontogeny Venture Fund, LP | Director | 3,410,713 | $5.53 | $18.9M | +99.6% | SEC |
| 2021-03-23 | EDELMAN JOSEPH | Director | 2,608,695 | $5.75 | $15.0M | +24.1% | SEC |
| 2021-03-23 | Kolchinsky Peter | Director | 2,206,685 | $5.75 | $12.7M | +25.3% | SEC |
| 2019-07-29 | PERCEPTIVE ADVISORS LLC | Director | 2,822,581 | $4.65 | $13.1M | +71.9% | SEC |
| 2018-02-01 | Koppel Adam | Director | 300,000 | $16.00 | $4.8M | +17.8% | SEC |
| 2018-01-30 | Shah Rajeev M. | Director | 1,000,000 | $16.00 | $16.0M | +59.2% | SEC |
| 2018-01-30 | PERCEPTIVE ADVISORS LLC | Director | 1,020,000 | $16.22 | $16.5M | +35.1% | SEC |
Insider sales
| Filed | Insider | Role | Shares | Avg price | Value | Type | Filing |
|---|---|---|---|---|---|---|---|
| 2026-02-18 | Cumbo Alexander | CEO | 16,644 | $5.82 | $96,868 | Sale | SEC |
| 2026-02-06 | Tan Kevin | CFO | 14,783 | $6.44 | $95,203 | Sale | SEC |
| 2026-02-06 | Howton David T | Officer | 18,894 | $6.44 | $121,677 | Sale | SEC |
| 2026-02-06 | Herzich Paul | Officer | 10,905 | $6.44 | $70,228 | Sale | SEC |
| 2026-02-06 | Hanrahan Jessie | Officer | 12,348 | $6.44 | $79,521 | Sale | SEC |
| 2026-02-06 | Cumbo Alexander | CEO | 48,913 | $6.44 | $315,000 | Sale | SEC |
| 2026-02-06 | Brooks Gabriel | Officer | 12,616 | $6.44 | $81,247 | Sale | SEC |
| 2026-02-02 | Tan Kevin | CFO | 26,837 | $6.44 | $172,830 | Sale | SEC |
| 2026-02-02 | Howton David T | Officer | 37,771 | $6.44 | $243,245 | Sale | SEC |
| 2026-02-02 | Herzich Paul | Officer | 26,250 | $6.44 | $169,050 | Sale | SEC |
| 2026-02-02 | Hanrahan Jessie | Officer | 26,535 | $6.44 | $170,885 | Sale | SEC |
| 2026-02-02 | Cumbo Alexander | CEO | 80,258 | $6.44 | $516,862 | Sale | SEC |
| 2026-02-02 | Brooks Gabriel | Officer | 28,335 | $6.44 | $182,477 | Sale | SEC |
| 2025-12-04 | Cumbo Alexander | CEO | 10,808 | $5.11 | $55,229 | Sale | SEC |
| 2024-12-04 | Cumbo Alexander | CEO | 11,114 | $5.60 | $62,238 | Sale | SEC |
Showing the latest 15 of 28 sales of $50,000+ since 2016.
Compiled automatically from public SEC filings. Not investment advice. Get every new insider purchase in the daily report.
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