William Richard Jackman
William Richard Jackman: CHIEF LEGAL OFFICER (CLO) at Riot Platforms. What William Richard Jackman 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.
Riot Platforms (RIOT)
William Richard Jackman holds 2.9M Riot Platforms shares (0.76% of the company), worth about $54.7M at the last price, according to the Form 4 of Jan 1, 2026.
- Shares held: 2.9M (0.76%), $54.7M — Held in their own name.
Declarations
- Riot Platforms (RIOT) — Form 4 of Jan 1, 2026 (CHIEF LEGAL OFFICER (CLO)): grant or award of 197,316; grant or award of 394,632; 2.9M shares after 0001872927-26-000002
- Riot Platforms (RIOT) — Form 4/A of Sep 10, 2025 (EVP, GENERAL COUNSEL): open-market sale of 248,168 at $15.78; 2.3M shares after 0001872927-25-000005
- Riot Platforms (RIOT) — Form 4 of Sep 10, 2025 (EVP, GENERAL COUNSEL): open-market sale of 248,168 at $15.78; 2.3M shares after 0001415889-25-024415
- Riot Platforms (RIOT) — Form 4 of Jul 1, 2024 (EVP, GENERAL COUNSEL): grant or award of 251,256; grant or award of 502,512; 2.5M shares after 0001415889-24-019273
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.