Michael Halpin

CIK 1778858 · Chief Operating Officer · last filed 2026-06-22

Michael Halpin is a Chief Operating Officer who has filed 44 SEC Form 4 insider transactions across 1 company since 2019. The most recent filing, for VCEL, was dated Jun 22, 2026. Across all open-market trades the lifetime net is −$6.7M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.5M 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

$1.51M

Companies

1

Total Filings

44

Lifetime Open-Market Net

-$6.69M

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
VCEL	Chief Operating Officer	32,607	$46.24	$1.51M	-$6.69M	36	2026-06-22

Recent Filings

44 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
2026-06-22	VCEL	Mixed	—	-$235.8K	EDGAR
2026-06-18	VCEL	Notice (144)	−10,000	-$402.4K	EDGAR
2026-03-04	VCEL	Sell (S)	−10,305	-$363.8K	EDGAR
2026-03-02	VCEL	Notice (144)	−10,305	-$363.7K	EDGAR
2026-02-26	VCEL	Mixed	+5,528	-$189.8K	EDGAR
2026-02-20	VCEL	Mixed	+4,777	-$159.3K	EDGAR
2026-01-09	VCEL	Mixed	—	-$238.2K	EDGAR
2026-01-07	VCEL	Notice (144)	−10,000	-$404.8K	EDGAR
2025-11-13	VCEL	Mixed	—	-$62.7K	EDGAR
2025-11-12	VCEL	Notice (144)	−2,642	-$106.8K	EDGAR

Showing 1–10 of 44

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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.