A. Brooke Seawell

Sits on 2 boards. Last updated September 27, 2026

Time on boards

Boards served
2
Current seats
2
Board service
7 years
Director since
2023

7 years of board service in total across 2 boards, counting each seat separately. Longest: Tenable Holdings Inc., 3 years.

3 years ยท Since 2023
3 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 25, 2026 NVIDIA Corporation Grant or award +1,211 โ€” โ€”
May 13, 2026 Tenable Holdings Inc. Option exercise +6,062 โ€” โ€”
Mar 17, 2026 NVIDIA Corporation Gift โˆ’530 โ€” โ€”
Dec 15, 2025 Tenable Holdings Inc. Option exercise +115,000 $9.66 $1,110,900
Dec 15, 2025 Tenable Holdings Inc. Open-market sale โˆ’115,000 $24.82 $2,854,300
Dec 2, 2025 NVIDIA Corporation Open-market sale โˆ’12,728 $183.93 $2,341,061
Nov 24, 2025 NVIDIA Corporation Gift โˆ’520,000 โ€” โ€”
Sep 9, 2025 Tenable Holdings Inc. Open-market sale โˆ’15,000 $30.80 $462,000
Sep 4, 2025 Tenable Holdings Inc. Open-market sale โˆ’4,622 $30.12 $139,215
Aug 29, 2025 NVIDIA Corporation Gift โˆ’1,200,000 โ€” โ€”
Jul 14, 2025 NVIDIA Corporation Open-market sale โˆ’5,984 $162.67 $973,417
Jul 14, 2025 NVIDIA Corporation Open-market sale โˆ’22,798 $163.63 $3,730,437
Jul 14, 2025 NVIDIA Corporation Open-market sale โˆ’16,326 $164.62 $2,687,586
Jul 14, 2025 NVIDIA Corporation Open-market sale โˆ’3,684 $165.14 $608,376
Jul 11, 2025 NVIDIA Corporation Open-market sale โˆ’2,562 $164.21 $420,706

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