William F. Griffin Jr.

William F. Griffin Jr.: Director · GEMMA, NON-EXECUTIVE CHAIRMAN at Argan. What William F. Griffin Jr. holds in an AI or semiconductor company tracked on Silicon Floor, from their SEC filings, broken down: the shares held and how, then any restricted shares, options or other rights declared.

Argan (AGX)

William F. Griffin Jr. holds 40,976 Argan shares (0.29% of the company), worth about $16.1M at the last price, according to the Form 4 of Jun 22, 2026.

• Shares held: 40,976 (0.29%), $16.1M — Held through trusts (William F Griffin Jr GRAT II dtd Oct 6, 2025).
• Share units: 3,339 (0.02%), $1.3M — Argan promised them as pay: each unit becomes a share when it vests, if its conditions are met. No vote until then.

Declarations

• Argan (AGX) — Form 4 of Jun 22, 2026 (GEMMA, NON-EXECUTIVE CHAIRMAN): open-market sale of 30,000 at $725.85; open-market sale of 20,000 at $760.43; 40,976 shares after 0001384123-26-000006
• Argan (AGX) — Form 4 of Jun 12, 2026 (GEMMA, NON-EXECUTIVE CHAIRMAN): open-market sale of 50,000 at $643.46; 90,976 shares after 0001384123-26-000004
• Argan (AGX) — Form 4 of Apr 8, 2026 (GEMMA, NON-EXECUTIVE CHAIRMAN) 0001384123-26-000002
• Argan (AGX) — Form 4 of Dec 5, 2025 (GEMMA, NON-EXECUTIVE CHAIRMAN): other of 140,976; other of 140,976; 140,976 shares after 0001384123-25-000007
• Argan (AGX) — Form 4 of Dec 1, 2025 (GEMMA, NON-EXECUTIVE CHAIRMAN): other of 5,000; other of 5,000; 152,626 shares after 0001384123-25-000005
• Argan (AGX) — Form 4 of Aug 5, 2025 (GEMMA, NON-EXECUTIVE CHAIRMAN): other of 80,000; other of 80,000; 135,976 shares after 0001415889-25-021043
• Argan (AGX) — Form 4 of May 13, 2025 (GEMMA, NON-EXECUTIVE CHAIRMAN): option exercise or conversion of 3,371; other of 25,000; 135,975 shares after 0001415889-25-012831
• Argan (AGX) — Form 4 of Apr 10, 2025 (GEMMA, NON-EXECUTIVE CHAIRMAN): other of 130,000; other of 130,000; 132,604 shares after 0001415889-25-010687
• Argan (AGX) — Form 4 of Oct 30, 2024 (GEMMA, NON-EXECUTIVE CHAIRMAN): open-market sale of 7,500 at $136.09; 11,650 shares after 0001415889-24-025897
• Argan (AGX) — Form 4 of Oct 24, 2024 (GEMMA, NON-EXECUTIVE CHAIRMAN): gift of 5,000; gift of 5,000; 151,754 shares after 0001415889-24-025675
• Argan (AGX) — Form 4 of Sep 17, 2024 (GEMMA, NON-EXECUTIVE CHAIRMAN): open-market sale of 20,000 at $90.00; 137,604 shares after 0001415889-24-023616
• Argan (AGX) — Form 4 of Jul 31, 2024 (GEMMA, NON-EXECUTIVE CHAIRMAN): open-market sale of 1,885 at $78.31; open-market sale of 5,000 at $77.14; 157,604 shares after 0001415889-24-020468

Sources: SEC Schedules 13D and 13G (stakes above 5%, which count everything a person votes or can acquire within 60 days) and Forms 3, 4 and 5 (the shares a director, officer or 10% owner holds, filed within two business days of each trade). Values at the last price.

All holders · Who owns each AI company · All tracked companies · The AI market