Michael Shamus O'Sullivan

CIK 2007002 · EVP Chief Admin & LegalOfficer · last filed 2026-03-03

Michael Shamus O'Sullivan is an EVP Chief Admin & LegalOfficer who has filed 9 SEC Form 4 insider transactions across 1 company since 2024. The most recent filing shows the insider had shares withheld for taxes covering $6.7K of VSH on Mar 3, 2026. Across all open-market trades the lifetime net is +$37.2K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.2M 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

$1.16M

Companies

1

Total Filings

9

Lifetime Open-Market Net

$37.2K

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
VSH	EVP Chief Admin & LegalOfficer	35,131	$32.90	$1.16M	$37.2K	9	2026-03-03

Recent Filings

9 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
2026-03-03	VSH	Tax (F)	−360	-$6.7K	EDGAR
2026-02-27	VSH	Grant (A)	+14,023	$0	EDGAR
2026-01-05	VSH	Tax (F)	−2,171	-$31.5K	EDGAR
2025-05-13	VSH	Buy (P)	+2,500	$37.2K	EDGAR
2025-03-04	VSH	Tax (F)	−414	-$7.1K	EDGAR
2025-02-28	VSH	Grant (A)	+11,111	$0	EDGAR
2025-01-06	VSH	Tax (F)	−910	-$15.4K	EDGAR
2024-03-05	VSH	Tax (F)	−374	-$8.4K	EDGAR
2024-02-29	VSH	Grant (A)	+8,016	$0	EDGAR

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.