SLDB
Solid Biosciences LLC
NASDAQ: SLDB · HEALTHCARE · BIOTECHNOLOGY
$7.68
+5.69% today
Updated 2026-06-04
Market cap
$817.13M
P/E ratio
—
P/S ratio
3.65x
EPS (TTM)
$-1.92
Dividend yield
—
52W range
$4 – $9
Volume
1.8M
Solid Biosciences LLC (SLDB) Insider transactions
Net insider activity
Net buying (11,330,458 shares)
Buy transactions
49
Sell transactions
51
All transactions
| Date | Insider | Title | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 2026-04-02 | SMITH, IAN F | Director | Sale | 3,441 | — | — |
| 2026-04-02 | SMITH, IAN F | Director | Buy | 3,441 | — | — |
| 2026-03-09 | PERCEPTIVE, ADVISORS LLC | Director, 10% Owner | Buy | 8,912,655 | $5.61 | $49.99M |
| 2026-02-18 | TAN, KEVIN | CFO & Treasurer | Sale | 5,404 | $5.82 | $31469.11 |
| 2026-02-18 | HOWTON, DAVID T | Chief Operating Officer | Sale | 7,469 | $5.82 | $43494.23 |
| 2026-02-18 | HERZICH, PAUL | Chief Technology Officer | Sale | 3,616 | $5.82 | $21057.05 |
| 2026-02-18 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 4,134 | $5.82 | $24073.52 |
| 2026-02-18 | GANOT, ILAN | Director | Sale | 2,658 | $5.82 | $15478.33 |
| 2026-02-18 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 16,644 | $5.82 | $96923.01 |
| 2026-02-18 | BROOKS, GABRIEL | Chief Medical Officer | Sale | — | $5.82 | — |
| 2026-02-13 | TAN, KEVIN | CFO & Treasurer | Sale | 10,625 | — | — |
| 2026-02-13 | TAN, KEVIN | CFO & Treasurer | Buy | 10,625 | — | — |
| 2026-02-13 | HOWTON, DAVID T | Chief Operating Officer | Sale | 14,687 | — | — |
| 2026-02-13 | HOWTON, DAVID T | Chief Operating Officer | Buy | 14,687 | — | — |
| 2026-02-13 | HERZICH, PAUL | Chief Technology Officer | Sale | 7,187 | — | — |
| 2026-02-13 | HERZICH, PAUL | Chief Technology Officer | Buy | 7,187 | — | — |
| 2026-02-13 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 8,125 | — | — |
| 2026-02-13 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 8,125 | — | — |
| 2026-02-13 | GANOT, ILAN | Director | Sale | 4,861 | — | — |
| 2026-02-13 | GANOT, ILAN | Director | Buy | 4,861 | — | — |
| 2026-02-13 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 30,031 | — | — |
| 2026-02-13 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 30,031 | — | — |
| 2026-02-13 | BROOKS, GABRIEL | Chief Medical Officer | Sale | 10,937 | — | — |
| 2026-02-13 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 10,937 | — | — |
| 2026-02-04 | TAN, KEVIN | CFO & Treasurer | Sale | 14,783 | $6.44 | $95230.61 |
| 2026-02-04 | HOWTON, DAVID T | Chief Operating Officer | Sale | 18,894 | $6.44 | $121713.26 |
| 2026-02-04 | HERZICH, PAUL | Chief Technology Officer | Sale | 10,905 | $6.44 | $70248.92 |
| 2026-02-04 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 12,348 | $6.44 | $79544.58 |
| 2026-02-04 | GANOT, ILAN | Director | Sale | 7,205 | $6.44 | $46413.89 |
| 2026-02-04 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 48,913 | $6.44 | $315092.65 |
| 2026-02-04 | BROOKS, GABRIEL | Chief Medical Officer | Sale | 12,616 | $6.44 | $81271.01 |
| 2026-02-02 | TAN, KEVIN | CFO & Treasurer | Sale | 26,837 | $6.44 | $172747.09 |
| 2026-02-02 | HOWTON, DAVID T | Chief Operating Officer | Sale | 37,771 | $6.44 | $243128.15 |
| 2026-02-02 | HERZICH, PAUL | Chief Technology Officer | Sale | 26,250 | $6.44 | $168968.63 |
| 2026-02-02 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 26,535 | $6.44 | $170803.14 |
| 2026-02-02 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 80,258 | $6.44 | $516612.72 |
| 2026-02-02 | BROOKS, GABRIEL | Chief Medical Officer | Sale | 28,335 | $6.44 | $182389.56 |
| 2026-01-31 | TAN, KEVIN | CFO & Treasurer | Sale | 33,075 | — | — |
| 2026-01-31 | TAN, KEVIN | CFO & Treasurer | Buy | 33,075 | — | — |
| 2026-01-31 | HOWTON, DAVID T | Chief Operating Officer | Sale | 42,275 | — | — |
| 2026-01-31 | HOWTON, DAVID T | Chief Operating Officer | Buy | 42,275 | — | — |
| 2026-01-31 | HERZICH, PAUL | Chief Technology Officer | Sale | 24,675 | — | — |
| 2026-01-31 | HERZICH, PAUL | Chief Technology Officer | Buy | 24,675 | — | — |
| 2026-01-31 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 27,625 | — | — |
| 2026-01-31 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 27,625 | — | — |
| 2026-01-31 | GANOT, ILAN | Director | Sale | 15,000 | — | — |
| 2026-01-31 | GANOT, ILAN | Director | Buy | 15,000 | — | — |
| 2026-01-31 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 100,400 | — | — |
| 2026-01-31 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 100,400 | — | — |
| 2026-01-31 | BROOKS, GABRIEL | Chief Medical Officer | Sale | 28,225 | — | — |
| 2026-01-31 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 28,225 | — | — |
| 2026-01-29 | TAN, KEVIN | CFO & Treasurer | Buy | 93,500 | — | — |
| 2026-01-29 | TAN, KEVIN | CFO & Treasurer | Buy | 56,647 | — | — |
| 2026-01-29 | TAN, KEVIN | CFO & Treasurer | Sale | 56,646 | — | — |
| 2026-01-29 | TAN, KEVIN | CFO & Treasurer | Buy | 187,000 | — | — |
| 2026-01-29 | TAN, KEVIN | CFO & Treasurer | Buy | 56,646 | — | — |
| 2026-01-29 | HOWTON, DAVID T | Chief Operating Officer | Buy | 105,100 | — | — |
| 2026-01-29 | HOWTON, DAVID T | Chief Operating Officer | Buy | 79,341 | — | — |
| 2026-01-29 | HOWTON, DAVID T | Chief Operating Officer | Sale | 79,341 | — | — |
| 2026-01-29 | HOWTON, DAVID T | Chief Operating Officer | Buy | 210,200 | — | — |
| 2026-01-29 | HOWTON, DAVID T | Chief Operating Officer | Buy | 79,341 | — | — |
| 2026-01-29 | HERZICH, PAUL | Chief Technology Officer | Buy | 85,000 | — | — |
| 2026-01-29 | HERZICH, PAUL | Chief Technology Officer | Buy | 54,925 | — | — |
| 2026-01-29 | HERZICH, PAUL | Chief Technology Officer | Sale | 54,925 | — | — |
| 2026-01-29 | HERZICH, PAUL | Chief Technology Officer | Buy | 170,000 | — | — |
| 2026-01-29 | HERZICH, PAUL | Chief Technology Officer | Buy | 54,925 | — | — |
| 2026-01-29 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 95,000 | — | — |
| 2026-01-29 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 54,925 | — | — |
| 2026-01-29 | HANRAHAN, JESSIE | Chief Regulatory Officer | Sale | 54,925 | — | — |
| 2026-01-29 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 190,000 | — | — |
| 2026-01-29 | HANRAHAN, JESSIE | Chief Regulatory Officer | Buy | 54,925 | — | — |
| 2026-01-29 | GANOT, ILAN | Director | Buy | 35,450 | — | — |
| 2026-01-29 | GANOT, ILAN | Director | Buy | 70,900 | — | — |
| 2026-01-29 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 254,900 | — | — |
| 2026-01-29 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 169,401 | — | — |
| 2026-01-29 | CUMBO, ALEXANDER | Director, President and CEO | Sale | 169,401 | — | — |
| 2026-01-29 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 509,850 | — | — |
| 2026-01-29 | CUMBO, ALEXANDER | Director, President and CEO | Buy | 169,401 | — | — |
| 2026-01-29 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 103,750 | — | — |
| 2026-01-29 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 58,847 | — | — |
| 2026-01-29 | BROOKS, GABRIEL | Chief Medical Officer | Sale | 58,847 | — | — |
| 2026-01-29 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 207,450 | — | — |
| 2026-01-29 | BROOKS, GABRIEL | Chief Medical Officer | Buy | 58,847 | — | — |
| 2026-01-28 | GANOT, ILAN | Director | Sale | 191 | $6.59 | $1258.69 |
| 2026-01-27 | GANOT, ILAN | Director | Sale | 3,884 | — | — |
| 2026-01-27 | GANOT, ILAN | Director | Sale | 389 | — | — |
| 2026-01-27 | GANOT, ILAN | Director | Buy | 3,884 | — | — |
| 2026-01-27 | GANOT, ILAN | Director | Buy | 389 | — | — |
| 2026-01-13 | TAN, KEVIN | CFO & Treasurer | Sale | 5,704 | $5.27 | $30060.08 |
| 2026-01-09 | TAN, KEVIN | CFO & Treasurer | Sale | 11,250 | — | — |
| 2026-01-09 | TAN, KEVIN | CFO & Treasurer | Buy | 11,250 | — | — |
| 2026-01-06 | SMITH, IAN F | Director | Sale | 4,573 | — | — |
| 2026-01-06 | SMITH, IAN F | Director | Buy | 4,573 | — | — |
| 2026-01-05 | GANOT, ILAN | Director | Sale | 1,053 | $5.43 | $5717.79 |
| 2026-01-03 | GANOT, ILAN | Director | Sale | 2,994 | — | — |
| 2026-01-03 | GANOT, ILAN | Director | Buy | 2,994 | — | — |
| 2026-01-02 | SMITH, IAN F | Director | Buy | 18,012 | — | — |
| 2026-01-02 | SMITH, IAN F | Director | Buy | 13,761 | — | — |
| 2025-12-03 | HOWTON, DAVID T | Chief Operating Officer | Sale | 4,932 | $5.11 | $25202.52 |
| 2025-12-03 | HERZICH, PAUL | Chief Technology Officer | Sale | 2,701 | $5.11 | $13802.11 |
Frequently asked questions
Are SLDB insiders buying or selling?
Over the transactions on record, SLDB insiders have been net sellers, with about $2.57M in stock sold across 51 sales, against 1 open-market purchase.
Does insider selling at SLDB mean the stock will fall?
Not by itself. Most executive selling is pre-scheduled through 10b5-1 plans filed months in advance, and insiders sell for diversification, taxes, and liquidity far more often than out of any view on the price. Insider buying is the stronger signal, especially when several insiders buy around the same time, because there is usually only one reason to put personal cash into the stock.
Which SLDB insiders are selling the most?
Recent selling is concentrated in a few names. CUMBO, ALEXANDER accounts for the largest share on record, with about $928628.38 sold. Selling by one or two individuals matters less than broad selling across the whole leadership team, which is the pattern worth watching.