Time on boards
- Boards served
- 3
- Current seats
- 3
- Board service
- 11 years
- Director since
- 2023
11 years of board service in total across 3 boards, counting each seat separately. Longest: PTC Therapeutics Inc., 3 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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Rocket Pharmaceuticals Inc. May 20, 202668.2%
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Rocket Pharmaceuticals Inc. June 18, 202569.9%
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PTC Therapeutics Inc. June 17, 202594.7%
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Rocket Pharmaceuticals Inc. June 13, 202499.6%
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Rocket Pharmaceuticals Inc. June 22, 202392.3%
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 |
|---|---|---|---|---|---|
| Aug 3, 2026 | Rocket Pharmaceuticals Inc. | Other | +150,000 | — | — |
| Jun 18, 2026 | Rocket Pharmaceuticals Inc. | Grant or award | +22,862 | — | — |
| Jan 2, 2026 | PTC Therapeutics Inc. | Grant or award | +4,000 | — | — |
| Sep 9, 2025 | PTC Therapeutics Inc. | Option exercise | +12,000 | $30.86 | $370,320 |
| Sep 9, 2025 | PTC Therapeutics Inc. | Open-market sale | −12,000 | $58.34 | $700,080 |
| Jun 18, 2025 | Rocket Pharmaceuticals Inc. | Grant or award | +30,000 | — | — |
| Jan 3, 2025 | PTC Therapeutics Inc. | Grant or award | +4,000 | — | — |
| May 8, 2024 | PTC Therapeutics Inc. | Gift | −1,650 | — | — |
| May 2, 2024 | Rocket Pharmaceuticals Inc. | Gift | −113,124 | — | — |
| May 2, 2024 | Rocket Pharmaceuticals Inc. | Gift | −59,716 | — | — |
| Apr 15, 2024 | Rocket Pharmaceuticals Inc. | Option exercise | +29,624 | $4.34 | $128,568 |
| Apr 15, 2024 | Rocket Pharmaceuticals Inc. | Open-market sale | −10,000 | $24.05 | $240,500 |
| Apr 12, 2024 | Rocket Pharmaceuticals Inc. | Option exercise | +70,000 | $4.34 | $303,800 |
| Apr 12, 2024 | Rocket Pharmaceuticals Inc. | Open-market sale | −59,716 | $24.22 | $1,446,322 |
| Apr 12, 2024 | Rocket Pharmaceuticals Inc. | Open-market sale | −10,284 | $25.16 | $258,745 |
Questions about David P. Southwell
What boards is David P. Southwell on?
David P. Southwell sits on the boards of PTC Therapeutics Inc., Rocket Pharmaceuticals Inc. and TScan Therapeutics Inc.
What company is David P. Southwell the CEO of?
David P. Southwell is Chief Executive Officer of TScan Therapeutics Inc.
How long has David P. Southwell served on boards?
Our records show at least 11 years of board service across 3 boards, the earliest from 2023.
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