William F. Griffin Jr.

Sits on 1 board. Last updated September 28, 2026

Time on boards

Boards served
1
Current seats
1
Board service
3 years
Director since
2023

3 years of board service in total across 1 board, counting each seat separately. Longest: Argan Inc., 3 years.

Argan Inc. 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
Jun 22, 2026 Argan Inc. Open-market sale โˆ’20,000 $760.43 $15,208,600
Jun 18, 2026 Argan Inc. Open-market sale โˆ’30,000 $725.85 $21,775,500
Jun 12, 2026 Argan Inc. Open-market sale โˆ’50,000 $643.46 $32,173,000
Dec 5, 2025 Argan Inc. Other โˆ’140,976 โ€” โ€”
Dec 5, 2025 Argan Inc. Other +140,976 โ€” โ€”
Dec 1, 2025 Argan Inc. Other โˆ’5,000 โ€” โ€”
Dec 1, 2025 Argan Inc. Other +5,000 โ€” โ€”
Aug 5, 2025 Argan Inc. Other โˆ’80,000 โ€” โ€”
Aug 5, 2025 Argan Inc. Other +80,000 โ€” โ€”
May 13, 2025 Argan Inc. Other โˆ’25,000 โ€” โ€”
May 13, 2025 Argan Inc. Other +25,000 โ€” โ€”
May 9, 2025 Argan Inc. Other โˆ’25,000 โ€” โ€”
May 9, 2025 Argan Inc. Other +25,000 โ€” โ€”
Apr 18, 2025 Argan Inc. Option exercise +3,371 โ€” โ€”
Apr 10, 2025 Argan Inc. Other โˆ’130,000 โ€” โ€”

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