Alexander Cumbo
President and CEO at Solid Biosciences Inc.
Sits on 4 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 4
- Current seats
- 4
- Board service
- 6 years
- Director since
- 2023
6 years of board service in total across 4 boards, counting each seat separately. Longest: Solid Biosciences Inc., 2 years.
Chief executive roles
Shareholder support
Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
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Solid Biosciences Inc. June 12, 202594.9%
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
| Date | Company | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Feb 18, 2026 | Solid Biosciences Inc. | Open-market sale | −16,644 | $5.82 | $96,868 |
| Feb 13, 2026 | Solid Biosciences Inc. | Option exercise | +30,031 | — | — |
| Feb 4, 2026 | Solid Biosciences Inc. | Open-market sale | −48,913 | $6.44 | $315,000 |
| Feb 2, 2026 | Solid Biosciences Inc. | Open-market sale | −80,258 | $6.44 | $516,862 |
| Jan 31, 2026 | Solid Biosciences Inc. | Option exercise | +100,400 | — | — |
| Jan 29, 2026 | Solid Biosciences Inc. | Option exercise | +169,401 | — | — |
| Dec 3, 2025 | Solid Biosciences Inc. | Open-market sale | −10,808 | $5.11 | $55,229 |
| Dec 2, 2025 | Solid Biosciences Inc. | Option exercise | +28,612 | — | — |
| Feb 14, 2025 | Solid Biosciences Inc. | Open-market sale | −11,365 | $3.96 | $45,005 |
| Feb 13, 2025 | Solid Biosciences Inc. | Option exercise | +30,031 | — | — |
| Dec 3, 2024 | Solid Biosciences Inc. | Open-market sale | −11,114 | $5.60 | $62,238 |
| Dec 2, 2024 | Solid Biosciences Inc. | Option exercise | +28,612 | — | — |
| Dec 4, 2023 | Solid Biosciences Inc. | Open-market sale | −11,757 | $2.77 | $32,567 |
| Dec 2, 2023 | Solid Biosciences Inc. | Option exercise | +28,612 | — | — |
Questions about Alexander Cumbo
What boards is Alexander Cumbo on?
Alexander Cumbo sits on the boards of Climb Bio Inc., Solid Biosciences Inc., Stoke Therapeutics Inc. and Vor Biopharma Inc.
What company is Alexander Cumbo the CEO of?
Alexander Cumbo is President and CEO of Solid Biosciences Inc.
How long has Alexander Cumbo served on boards?
Our records show at least 6 years of board service across 4 boards, the earliest from 2023.
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