Stephen P. Mawer

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
2 years
Director since
2024

2 years of board service in total across 1 board, counting each seat separately. Longest: Calumet Inc., 1 year.

Calumet Inc. Director
1 year ยท Since 2024

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
Jul 9, 2026 Calumet Inc. Option exercise +13,780 โ€” โ€”
Jul 9, 2026 Calumet Inc. Shares withheld for tax โˆ’5,512 โ€” โ€”
Mar 9, 2026 Calumet Inc. Option exercise +27,806 โ€” โ€”
Mar 9, 2026 Calumet Inc. Shares withheld for tax โˆ’12,589 โ€” โ€”
Jun 24, 2025 Calumet Inc. Option exercise +7,403 โ€” โ€”
Jun 24, 2025 Calumet Inc. Open-market sale โˆ’2,962 โ€” โ€”
Apr 22, 2025 Calumet Inc. Open-market sale โˆ’3,655 $9.29 $33,955
Mar 24, 2025 Calumet Inc. Open-market sale โˆ’3,655 $12.88 $47,076
Mar 11, 2025 Calumet Inc. Option exercise +169,937 โ€” โ€”
Mar 11, 2025 Calumet Inc. Shares withheld for tax โˆ’75,873 โ€” โ€”
Mar 6, 2025 Calumet Inc. Open-market sale โˆ’3,655 $12.64 $46,199
Jan 17, 2025 Calumet Inc. Option exercise +46,572 โ€” โ€”
Jan 17, 2025 Calumet Inc. Open-market sale โˆ’18,629 โ€” โ€”

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