William M. Cook

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: Mativ Holdings Inc., 3 years.

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
Mar 4, 2026 Axalta Coating Systems Ltd. Option exercise +5,832 โ€” โ€”
May 29, 2025 Mativ Holdings Inc. Open-market purchase +5,000 $5.84 $29,200
Feb 28, 2025 Axalta Coating Systems Ltd. Option exercise +6,157 โ€” โ€”
Nov 15, 2024 Mativ Holdings Inc. Open-market purchase +2,500 $12.45 $31,125
Feb 28, 2024 Axalta Coating Systems Ltd. Option exercise +6,711 โ€” โ€”
Sep 15, 2023 Mativ Holdings Inc. Open-market purchase +1,500 $15.52 $23,280
Sep 12, 2023 Axalta Coating Systems Ltd. Open-market purchase +1,500 $26.81 $40,215
Mar 14, 2023 Axalta Coating Systems Ltd. Open-market purchase +2,500 $29.55 $73,875
Feb 15, 2023 Axalta Coating Systems Ltd. Option exercise +6,939 โ€” โ€”

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