Briggs Morrison

Sits on 4 boards. Last updated September 27, 2026

Time on boards

Boards served
4
Current seats
4
Board service
12 years
Director since
2023

12 years of board service in total across 4 boards, counting each seat separately. Longest: Syndax Pharmaceuticals Inc., 3 years.

Syndax Pharmaceuticals Inc. Director ยท President, Head of R&D
3 years ยท Since 2023
Arvinas Inc. Director
3 years ยท Since 2023
3 years ยท Since 2023
1 year ยท Since 2025

Shareholder support

Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

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
Jun 24, 2026 Arvinas Inc. Grant or award +15,527 โ€” โ€”
Mar 6, 2026 Arvinas Inc. Open-market purchase +20,000 $13.40 $268,000
Sep 22, 2025 Arvinas Inc. Open-market purchase +30,000 $7.57 $227,100
Jun 25, 2025 Arvinas Inc. Grant or award +16,025 โ€” โ€”
May 29, 2024 Arvinas Inc. Grant or award +5,899 โ€” โ€”
Feb 7, 2024 Syndax Pharmaceuticals Inc. Grant or award +17,000 โ€” โ€”
Aug 9, 2023 Syndax Pharmaceuticals Inc. Option exercise +52,855 $8.77 $463,538
Aug 9, 2023 Syndax Pharmaceuticals Inc. Open-market sale โˆ’52,855 $18.27 $965,661
Jul 10, 2023 Syndax Pharmaceuticals Inc. Option exercise +52,855 $8.77 $463,538
Jul 10, 2023 Syndax Pharmaceuticals Inc. Open-market sale โˆ’52,855 $20.40 $1,078,242
Jun 15, 2023 Arvinas Inc. Grant or award +4,121 โ€” โ€”
Jun 9, 2023 Syndax Pharmaceuticals Inc. Option exercise +24,582 $6.38 $156,833
Jun 9, 2023 Syndax Pharmaceuticals Inc. Option exercise +28,273 $8.77 $247,954
Jun 9, 2023 Syndax Pharmaceuticals Inc. Open-market sale โˆ’24,582 $21.18 $520,647
Jun 9, 2023 Syndax Pharmaceuticals Inc. Open-market sale โˆ’28,273 $21.18 $598,822

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