Sandra Horning

Sits on 4 boards. Last updated September 27, 2026

Time on boards

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

13 years of board service in total across 4 boards, counting each seat separately. Longest: Moderna Inc., 3 years.

Moderna Inc. Director
3 years ยท Since 2023
3 years ยท Since 2023
3 years ยท Since 2023
2 years ยท Since 2023

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 18, 2026 Revolution Medicines Inc. Grant or award +1,191 โ€” โ€”
Apr 30, 2026 Moderna Inc. Option exercise +16,233 โ€” โ€”
Apr 30, 2026 Gilead Sciences Inc. Grant or award +1,146 โ€” โ€”
Jun 26, 2025 Revolution Medicines Inc. Grant or award +3,142 โ€” โ€”
May 7, 2025 Gilead Sciences Inc. Grant or award +1,516 โ€” โ€”
Apr 30, 2025 Moderna Inc. Option exercise +979 โ€” โ€”
Jun 20, 2024 Revolution Medicines Inc. Grant or award +4,800 โ€” โ€”
Nov 9, 2023 Revolution Medicines Inc. Grant or award +52,291 โ€” โ€”
Nov 9, 2023 Revolution Medicines Inc. Grant or award +27,696 โ€” โ€”
Nov 9, 2023 Revolution Medicines Inc. Grant or award +10,500 โ€” โ€”
May 3, 2023 Gilead Sciences Inc. Grant or award +1,887 โ€” โ€”
Apr 28, 2023 Moderna Inc. Option exercise +670 โ€” โ€”

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