David E. I. Pyott

Sits on 4 boards. Last updated September 28, 2026

Time on boards

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

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

3 years · Since 2023
3 years · Since 2023
3 years · Since 2023
8 months · Since 2026

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
Sep 15, 2026 Tarsus Pharmaceuticals Inc. Option exercise +201 — —
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Option exercise +3,830 — —
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Open-market sale −921 $297.71 $274,191
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Open-market sale −1,175 $298.91 $351,219
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Open-market sale −1,222 $299.87 $366,441
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Open-market sale −495 $300.72 $148,856
Jun 1, 2026 Alnylam Pharmaceuticals Inc. Open-market sale −17 $302.65 $5,145
May 20, 2026 Alnylam Pharmaceuticals Inc. Grant or award +671 — —
Apr 24, 2026 Tarsus Pharmaceuticals Inc. Option exercise +1,383 — —
May 8, 2025 Alnylam Pharmaceuticals Inc. Grant or award +775 — —
Mar 24, 2025 Alnylam Pharmaceuticals Inc. Option exercise +7,440 $88.95 $661,788
Mar 24, 2025 Alnylam Pharmaceuticals Inc. Open-market sale −7,440 $299.00 $2,224,560
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

Questions about David E. I. Pyott

What boards is David E. I. Pyott on?

David E. I. Pyott sits on the boards of Alnylam Pharmaceuticals Inc., BioMarin Pharmaceutical Inc., Pliant Therapeutics Inc. and Tarsus Pharmaceuticals Inc.

How long has David E. I. Pyott served on boards?

Our records show at least 11 years of board service across 4 boards, the earliest from 2023.

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