David E. I. Pyott

Sits on 3 boards. Last updated September 28, 2026

Time on boards

Boards served
3
Current seats
3
Board service
10 years
Director since
2023

10 years of board service in total across 3 boards, counting each seat separately. Longest: Alnylam Pharmaceuticals Inc., 3 years.

3 years ยท Since 2023
3 years ยท Since 2023
3 years ยท Since 2023

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, 2024 Alnylam Pharmaceuticals Inc. Option exercise +17,560 $88.95 $1,561,962
Jun 24, 2024 Alnylam Pharmaceuticals Inc. Option exercise +7,420 $70.20 $520,884
Jun 24, 2024 Alnylam Pharmaceuticals Inc. Option exercise +7,470 $71.99 $537,765
Jun 24, 2024 Alnylam Pharmaceuticals Inc. Open-market sale โˆ’17,560 $220.00 $3,863,200
Jun 24, 2024 Alnylam Pharmaceuticals Inc. Open-market sale โˆ’7,420 $221.00 $1,639,820
Jun 24, 2024 Alnylam Pharmaceuticals Inc. Open-market sale โˆ’7,470 $222.00 $1,658,340
May 21, 2024 BioMarin Pharmaceutical Inc. Grant or award +4,720 โ€” โ€”
May 23, 2023 BioMarin Pharmaceutical Inc. Grant or award +4,190 โ€” โ€”
Feb 23, 2023 Alnylam Pharmaceuticals Inc. Option exercise +136 โ€” โ€”

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