Jack L. Wyszomierski

Sits on 2 boards. Last updated September 28, 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: Exelixis Inc., 3 years.

Exelixis Inc. Director
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 3, 2025 Exelixis Inc. Open-market sale โˆ’7,535 $43.09 $324,683
May 29, 2025 Exelixis Inc. Grant or award +9,812 โ€” โ€”
May 14, 2025 SiteOne Landscape Supply Inc. Grant or award +1,125 โ€” โ€”
Feb 28, 2025 Exelixis Inc. Option exercise +15,874 $20.50 $325,417
Feb 28, 2025 Exelixis Inc. Open-market sale โˆ’8,768 $37.80 $331,430
Jun 4, 2024 Exelixis Inc. Open-market sale โˆ’8,287 $22.00 $182,314
May 31, 2024 Exelixis Inc. Grant or award +18,838 โ€” โ€”
May 13, 2024 Exelixis Inc. Option exercise +11,686 $19.57 $228,695
May 13, 2024 Exelixis Inc. Open-market sale โˆ’10,923 $21.37 $233,425
May 7, 2024 SiteOne Landscape Supply Inc. Grant or award +865 โ€” โ€”
Jun 1, 2023 Exelixis Inc. Grant or award +20,718 โ€” โ€”
May 11, 2023 SiteOne Landscape Supply Inc. Grant or award +878 โ€” โ€”
Mar 10, 2023 Exelixis Inc. Option exercise +40,000 $6.30 $252,000
Mar 10, 2023 Exelixis Inc. Open-market sale โˆ’15,300 $16.61 $254,133

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