Insiders / Cumbo Alexander
Cumbo Alexander
CIK 1685994personinsider
Companies
1
First seen
Feb 2, 2026
Last activity
Feb 18, 2026
Companies
| Company | Shares held | Latest |
|---|---|---|
| Solid Biosciences Inc. · SLDB | 235,405 | — |
All securities held
3 positions · latest reported per filing
| Company | Security | Shares |
|---|---|---|
| Solid Biosciences Inc. | Common Stock | 235,405 |
| Solid Biosciences Inc. | Employee Stock Option (Right to Buy)Derivative | 509,850 |
| Solid Biosciences Inc. | Restricted Stock UnitsDerivative | 60,063 |
Activity
InsidersInstitutions
This person's insider trades (Form 4), across every company.| Date | Action | Company | Value | Shares Δ | Position after | Impact |
|---|---|---|---|---|---|---|
| Feb 2, 2026 | Sell | SLDB Solid Biosciences Inc. Common Stock | $516.6K | -80K -22.85% | 270,931 0.25% of shares | medium |
| Feb 4, 2026 | Sell | SLDB Solid Biosciences Inc. Common Stock | $315.1K | -49K -18.05% | 222,018 0.21% of shares | medium |
| Feb 18, 2026 | Sell | SLDB Solid Biosciences Inc. Common Stock | $96.9K | -17K -6.60% | 235,405 0.22% of shares | low |
| Feb 13, 2026 | Exercise | SLDB Solid Biosciences Inc. Restricted Stock Units | — | -30K -33.33% | 60,063 0.06% of shares | low |
| Feb 13, 2026 | Exercise | SLDB Solid Biosciences Inc. Common Stock | — | +30K +13.53% | 252,049 0.24% of shares | low |
| Jan 31, 2026 | Exercise | SLDB Solid Biosciences Inc. Restricted Stock Units | — | -100K -25.00% | 301,200 0.28% of shares | low |
| Jan 29, 2026 | Grant | SLDB Solid Biosciences Inc. Restricted Stock Units | — | +255K | 254,900 0.24% of shares | low |
| Jan 29, 2026 | Grant | SLDB Solid Biosciences Inc. Employee Stock Option (Right to Buy) | — | +510K | 509,850 0.48% of shares | low |
| Jan 29, 2026 | Exercise | SLDB Solid Biosciences Inc. Performance Stock Units | — | -169K -100.00% | 0 0.00% of shares | low |
| Jan 31, 2026 | Exercise | SLDB Solid Biosciences Inc. Common Stock | — | +100K +40.03% | 351,189 0.33% of shares | low |