Helene Gail Sandford

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
3 years
Director since
2023

3 years of board service in total across 1 board, counting each seat separately. Longest: Rigetti Computing Inc., 3 years.

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
Oct 17, 2025 Rigetti Computing Inc. Open-market sale โˆ’62,000 $44.89 $2,783,180
Sep 19, 2025 Rigetti Computing Inc. Open-market sale โˆ’1 $26.98 $27
Sep 19, 2025 Rigetti Computing Inc. Open-market sale โˆ’17,634 $24.75 $436,442
Sep 12, 2025 Rigetti Computing Inc. Open-market sale โˆ’7,773 $17.09 $132,841
Sep 12, 2025 Rigetti Computing Inc. Open-market sale โˆ’2,649 $18.19 $48,185
Sep 12, 2025 Rigetti Computing Inc. Open-market sale โˆ’11,935 $19.27 $229,987
Sep 12, 2025 Rigetti Computing Inc. Open-market sale โˆ’2,643 $19.92 $52,649
Jun 10, 2025 Rigetti Computing Inc. Open-market sale โˆ’47,648 $11.19 $533,181
Jun 10, 2025 Rigetti Computing Inc. Grant or award +14,902 โ€” โ€”
Sep 17, 2024 Rigetti Computing Inc. Open-market sale โˆ’43,200 $0.82 $35,424
Sep 11, 2024 Rigetti Computing Inc. Open-market sale โˆ’23,162 $0.75 $17,372
Jun 18, 2024 Rigetti Computing Inc. Grant or award +142,857 โ€” โ€”
Jun 15, 2023 Rigetti Computing Inc. Grant or award +113,821 โ€” โ€”

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