Justin B. Klee
Co-Chief Executive Officer at Amylyx Pharmaceuticals Inc.
Sits on 1 board. Last updated September 28, 2026
Time on boards
- Boards served
- 1
- Current seats
- 1
- Board service
- 4 years
- Director since
- 2023
4 years of board service in total across 1 board, counting each seat separately. Longest: Amylyx Pharmaceuticals 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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Amylyx Pharmaceuticals Inc. June 5, 202597.5%
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 10, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −29,025 | $32.13 | $932,573 |
| Sep 10, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −1,439 | $33.16 | $47,717 |
| Aug 18, 2026 | Amylyx Pharmaceuticals Inc. | Grant or award | +60,039 | — | — |
| Mar 5, 2026 | Amylyx Pharmaceuticals Inc. | Grant or award | +248,865 | — | — |
| Mar 2, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −29,282 | $14.47 | $423,711 |
| Feb 2, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −15,500 | $14.69 | $227,695 |
| Jan 16, 2026 | Amylyx Pharmaceuticals Inc. | Option exercise | +2,847 | $7.57 | $21,552 |
| Jan 16, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −1,995 | $13.89 | $27,711 |
| Jan 15, 2026 | Amylyx Pharmaceuticals Inc. | Option exercise | +197,153 | $7.57 | $1,492,448 |
| Jan 15, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −136,193 | $13.58 | $1,849,501 |
| Jan 6, 2026 | Amylyx Pharmaceuticals Inc. | Open-market sale | −7,715 | $11.09 | $85,559 |
| Sep 30, 2025 | Amylyx Pharmaceuticals Inc. | Open-market sale | −29,775 | $14.37 | $427,867 |
| Sep 30, 2025 | Amylyx Pharmaceuticals Inc. | Open-market sale | −200 | $15.01 | $3,002 |
| Mar 31, 2025 | Amylyx Pharmaceuticals Inc. | Open-market sale | −21,490 | $3.46 | $74,355 |
| Mar 6, 2025 | Amylyx Pharmaceuticals Inc. | Grant or award | +180,118 | — | — |
Questions about Justin B. Klee
What boards is Justin B. Klee on?
Justin B. Klee sits on the board of Amylyx Pharmaceuticals Inc.
What company is Justin B. Klee the CEO of?
Justin B. Klee is Co-Chief Executive Officer of Amylyx Pharmaceuticals Inc.
How long has Justin B. Klee served on boards?
Our records show at least 4 years of board service across 1 board, the earliest from 2023.
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