MARC GRANDISSON

CIK 1286007 · CEO · last filed 2026-06-24

MARC GRANDISSON is a CEO who has filed 57 SEC Form 4 insider transactions across 3 companies since 2007. The most recent filing, for HHH, was dated Jun 24, 2026. Across all open-market trades the lifetime net is −$77.5M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $228.0M 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

$228.01M

Companies

3

Total Filings

57

Lifetime Open-Market Net

-$77.47M

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
HHH	Director	3,290	$72.15	$237.4K	$0	1	2026-06-24
ACGLO	CEO	2,212,941	$18.99	$42.02M	-$52.11M	23	2024-02-29
ACGL	President & COO	1,828,266	$101.60	$185.75M	-$25.37M	31	2017-05-10

Recent Filings

57 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
2026-06-24	HHH	Grant (A)	+3,290	$0	EDGAR
2024-02-29	ACGLO	Grant (A)	+16,693	$0	EDGAR
2024-02-27	ACGLO	Grant (A)	+138,190	$0	EDGAR
2023-11-07	ACGLO	Sell (S)	−350,000	-$29.90M	EDGAR
2023-11-03	ACGL	Notice (144)	−350,000	-$32.00M	EDGAR
2023-05-23	ACGLO	Sell (S)	−200,000	-$15.22M	EDGAR
2023-05-19	ACGL	Notice (144)	−200,000	-$15.22M	EDGAR
2023-02-28	ACGLO	Grant (A)	+62,361	$0	EDGAR
2022-11-14	ACGLO	Mixed	+86,299	-$40	EDGAR
2022-11-04	ACGLO	Mixed	+36,246	-$53	EDGAR

Showing 1–10 of 57

Page 1 of 6 Next

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.