William Richard Jackman

CIK 1872927 · CHIEF LEGAL OFFICER (CLO) · last filed 2026-01-05

William Richard Jackman is a CHIEF LEGAL OFFICER (CLO) who has filed 25 SEC Form 4 insider transactions across 1 company since 2021. The most recent filing, for RIOT, was dated Jan 5, 2026. Across all open-market trades the lifetime net is −$13.3M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $43.7M across reported positions.

"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.

Disclosed Exposure

$43.74M

Companies

1

Total Filings

25

Lifetime Open-Market Net

-$13.33M

Holdings By Company

Latest on-record share count from this person's most recent non-derivative Form 4 transaction in each company. Disclosed exposure = shares × current underlying price.

Symbol	Role	Shares	Price	Disclosed Exposure	Lifetime OM Net	Filings	Latest Filed
RIOT	CHIEF LEGAL OFFICER (CLO)	2,458,473	$17.79	$43.74M	-$13.33M	21	2026-01-05

Recent Filings

25 filings

Insider activity across all companies, newest first. Form 4 rows are post-trade confirmations (buys, sells, grants, exercises). Notice (144) rows are pre-trade notices of intent to sell restricted or control stock under Rule 144 — they may not all execute. Compare adjacent dates to see which notices became actual sales.

Filed	Symbol	Action	Net Shares	Net $	Link
2026-01-05	RIOT	Grant (A)	+591,948	$0	EDGAR
2025-10-10	RIOT	Sell (S)	−248,168	-$3.92M	EDGAR
2025-09-12	RIOT	Sell (S)	−248,168	-$3.92M	EDGAR
2025-09-10	RIOT	Notice (144)	−248,168	-$3.92M	EDGAR
2024-07-03	RIOT	Grant (A)	+753,768	$0	EDGAR
2024-02-26	RIOT	Disp (D)	−192,000	$0	EDGAR
2024-01-05	RIOT	Grant (A)	+1,000,000	$0	EDGAR
2023-12-12	RIOT	Sell (S)	−57,000	-$893.7K	EDGAR
2023-12-08	RIOT	Notice (144)	−12,000	-$188.5K	EDGAR
2023-12-08	RIOT	Notice (144)	−45,000	-$705.1K	EDGAR

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Form 4 codes: P = open-market purchase · S = open-market sale · A = grant/award · M = option exercise · F = tax withholding at vest · G = bona-fide gift · D = disposition to issuer · J = other (see filing footnote). Only P / S codes carry directional signal.
Notice (144 / 144/A): Form 144 is a notice of intent to sell restricted/control stock under Rule 144, filed before the sale; 144/A is an amendment. Many notices are pre-scheduled under Rule 10b5-1 plans. A Form 4 with code S typically follows within a few days when the planned sale executes; missing follow-up Form 4s suggest the notice was cancelled or modified.