William John Sibold

CIK 1518611 · President and CEO · last filed 2026-07-20

William John Sibold is a President and CEO who has filed 21 SEC Form 4 insider transactions across 2 companies since 2011. The most recent filing, for MDGL, was dated Jul 20, 2026. Across all open-market trades the lifetime net is −$12.6M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $112.9M 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

$112.92M

Companies

2

Total Filings

21

Lifetime Open-Market Net

-$12.62M

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
MDGL	President and CEO	209,610	$538.71	$112.92M	-$12.62M	12	2026-07-20
AVANIR PHARMACEUTICALS, INC. (AVNR) Delisted		20,000	—	—	$0	1	2011-05-05

Recent Filings

21 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
2026-07-20	MDGL	Mixed	+47,500	-$1.37M	EDGAR
2026-07-20	MDGL	Notice (144)	−2,500	-$1.38M	EDGAR
2026-03-06	MDGL	Mixed	+13,332	-$718.3K	EDGAR
2026-03-06	MDGL	Notice (144)	−1,663	-$730.6K	EDGAR
2026-01-26	MDGL	Sell (S)	−1,577	-$776.5K	EDGAR
2026-01-26	MDGL	Notice (144)	−1,577	-$757.7K	EDGAR
2025-12-04	MDGL	Mixed	+47,600	-$1.38M	EDGAR
2025-12-04	MDGL	Notice (144)	−2,400	-$1.39M	EDGAR
2025-09-09	MDGL	Sell (S)	−7,279	-$3.24M	EDGAR
2025-09-09	MDGL	Notice (144)	−7,279	-$3.30M	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.