Marc Mazur

CIK 1361226 · last filed 2026-06-12

Marc Mazur is a corporate insider who has filed 24 SEC Form 4 insider transactions across 5 companies since 2013. The most recent filing, for SSSSL, was dated Jun 12, 2026. Across all open-market trades the lifetime net is +$26.7K, making them a net buyer over the disclosed history. Current disclosed insider exposure totals $1.9M 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

$1.94M

Companies

5

Total Filings

24

Lifetime Open-Market Net

$26.7K

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
SSSSL	Director	68,950	$24.99	$1.72M	$0	5	2026-06-12
CELUW	Director	236,066	$0.00	$449	$0	4	2023-06-16
SSSS	Director	17,397	$12.54	$218.2K	$0	2	2021-07-13
Fibrocell Science, Inc. (FCSC) Delisted	Director	0	—	—	$0	7	2019-12-13
SURO CAPITAL CORP. (GSVC) Delisted	Director	6,000	—	—	$26.7K	1	2017-08-14

Recent Filings

24 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
2026-06-12	SSSSL	Grant (A)	+3,536	$0	EDGAR
2025-05-30	SSSSL	Grant (A)	+7,812	$0	EDGAR
2024-06-07	SSSSL	Grant (A)	+12,048	$0	EDGAR
2023-06-16	CELUW	Grant (A)	+199,921	$0	EDGAR
2023-06-02	SSSSL	Grant (A)	+15,015	$0	EDGAR
2022-07-15	CELUW	Grant (A)	+36,145	$0	EDGAR
2022-06-03	SSSSL	Grant (A)	+6,684	$0	EDGAR
2021-09-13	CELUW	Grant (A)	—	$0	EDGAR
2021-07-20	CELUW	—	—	$0	EDGAR
2021-07-13	SSSS	Grant (A)	+3,770	$0	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.