Donal L. Mulligan

Sits on 3 boards. Last updated September 28, 2026

Time on boards

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

11 years of board service in total across 3 boards, counting each seat separately. Longest: Energizer Holdings Inc., 3 years.

3 years ยท Since 2023
Herbalife Ltd. Director
3 years ยท Since 2023
Tennant Company Director
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
Jan 2, 2025 Energizer Holdings Inc. Option exercise +4,709 โ€” โ€”
May 8, 2024 Tennant Company Grant or award +1,073 โ€” โ€”
May 3, 2024 Herbalife Ltd. Open-market purchase +30,000 $9.65 $289,500
May 3, 2024 Herbalife Ltd. Grant or award +15,657 โ€” โ€”
Feb 27, 2024 Tennant Company Option exercise +2,358 $65.12 $153,553
Feb 27, 2024 Tennant Company Open-market sale โˆ’2,358 $110.00 $259,380
Oct 3, 2023 Tennant Company Option exercise +1,765 $64.20 $113,313
Oct 3, 2023 Tennant Company Open-market sale โˆ’1,765 $73.94 $130,504
May 4, 2023 Herbalife Ltd. Grant or award +11,029 โ€” โ€”
May 3, 2023 Tennant Company Grant or award +1,447 โ€” โ€”
Apr 3, 2023 Tennant Company Option exercise +2,320 $46.59 $108,089
Apr 3, 2023 Tennant Company Open-market sale โˆ’2,320 $68.38 $158,642
Feb 22, 2023 Herbalife Ltd. Open-market purchase +15,000 $19.32 $289,800
Jan 3, 2023 Energizer Holdings Inc. Option exercise +3,561 โ€” โ€”
Nov 21, 2022 Herbalife Ltd. Gift โˆ’15,000 โ€” โ€”

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