Joshua T. Brumm
See Remarks at Dyne Therapeutics Inc.
Sits on 2 boards. Last updated September 28, 2026
Time on boards
- Boards served
- 2
- Current seats
- 2
- Board service
- 5 years
- Director since
- 2023
5 years of board service in total across 2 boards, counting each seat separately. Longest: Dyne 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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Dyne Therapeutics Inc. May 24, 202384.0%
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 |
|---|---|---|---|---|---|
| Sep 18, 2026 | Crescent Biopharma Inc. | Open-market sale | −7,837 | $16.71 | $130,956 |
| Sep 16, 2026 | Crescent Biopharma Inc. | Open-market sale | −1,610 | $17.90 | $28,819 |
| Jun 22, 2026 | Crescent Biopharma Inc. | Open-market sale | −42,305 | $17.99 | $761,067 |
| Dec 15, 2025 | Crescent Biopharma Inc. | Grant or award | +45,117 | — | — |
| Dec 15, 2025 | Crescent Biopharma Inc. | Grant or award | +10,000 | — | — |
| Mar 11, 2024 | Dyne Therapeutics Inc. | Option exercise | +50,000 | $5.54 | $277,000 |
| Mar 11, 2024 | Dyne Therapeutics Inc. | Open-market sale | −40,072 | $25.42 | $1,018,630 |
| Mar 11, 2024 | Dyne Therapeutics Inc. | Open-market sale | −9,928 | $26.10 | $259,121 |
| Mar 11, 2024 | Dyne Therapeutics Inc. | Open-market sale | −7,769 | $26.12 | $202,926 |
| Mar 11, 2024 | Dyne Therapeutics Inc. | Open-market sale | −8,618 | $25.93 | $223,465 |
| Mar 8, 2024 | Dyne Therapeutics Inc. | Option exercise | +153,931 | $5.54 | $852,778 |
| Mar 8, 2024 | Dyne Therapeutics Inc. | Option exercise | +209,412 | $5.54 | $1,160,142 |
| Mar 8, 2024 | Dyne Therapeutics Inc. | Open-market sale | −202,238 | $25.30 | $5,116,621 |
| Mar 8, 2024 | Dyne Therapeutics Inc. | Open-market sale | −160,670 | $26.72 | $4,293,102 |
| Mar 8, 2024 | Dyne Therapeutics Inc. | Open-market sale | −435 | $27.38 | $11,910 |
Questions about Joshua T. Brumm
What boards is Joshua T. Brumm on?
Joshua T. Brumm sits on the boards of Crescent Biopharma Inc. and Dyne Therapeutics Inc.
What company is Joshua T. Brumm the CEO of?
Joshua T. Brumm has been Chief Executive Officer of Crescent Biopharma Inc. since June 2025.
How long has Joshua T. Brumm served on boards?
Our records show at least 5 years of board service across 2 boards, the earliest from 2023.
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