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Who

Marc Mazur

Director

Company insider

Files Form 4 as: Director, SuRo Capital; Director, Celularity; Director, Fibrocell Science; Director, Majesco Entertainment Co.

In numbers

Trades disclosed
43
Buys
2
Sells
0
Bought
$41K
Sold
$0
Companies
4
Companies where not an officer
4
First trade
3 May 2006
Last trade
10 Jun 2026
Last filed
12 Jun 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
SuRo CapitalDirector · last 10 Jun 20261 buy · 0 sells
CELU CelularityDirector · Biotechnology · last 14 Jun 20230 buys · 0 sells
Fibrocell ScienceDirector · last 13 Dec 20191 buy · 0 sells
Majesco Entertainment CoDirector · last 3 Feb 20070 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
101Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
10 Jun 2026filed 12 Jun 2026SuRo CapitalSEC FORM 4 Code A—3,536 at $0.00filing
10 Jun 2026filed 12 Jun 2026NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—3,536 at $0.00filing
28 May 2025filed 30 May 2025NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—7,812 at $0.00filing
5 Jun 2024filed 7 Jun 2024NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—12,048 at $0.00filing
14 Jun 2023filed 16 Jun 2023CELU Celularityoption or derivative · BiotechnologySEC FORM 4 Code A—277,778 at $0.00filing
14 Jun 2023filed 16 Jun 2023CELU CelularityBiotechnologySEC FORM 4 Code A—199,921 at $0.00filing
31 May 2023filed 2 Jun 2023NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—15,015 at $0.00filing
13 Jul 2022filed 15 Jul 2022CELU Celularityoption or derivative · BiotechnologySEC FORM 4 Code A—54,152 at $0.00filing
13 Jul 2022filed 15 Jul 2022CELU CelularityBiotechnologySEC FORM 4 Code A—36,145 at $0.00filing
1 Jun 2022filed 3 Jun 2022NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—6,684 at $0.00filing
9 Sep 2021filed 13 Sep 2021CELU Celularityoption or derivative · BiotechnologySEC FORM 4 Code A—56,053 at $0.00filing
9 Jul 2021filed 13 Jul 2021NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—3,770 at $0.00filing
2 Jul 2020filed 2 Jul 2020NSLR Neostellar CapitalFunds, Shells & SPACsSEC FORM 4 Code A—5,440 at $0.00filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—534filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—534filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—534filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—1,600filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—1,200filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—2,400filing
13 Dec 2019filed 13 Dec 2019Fibrocell Scienceoption or derivativeSEC FORM 4 Code D—2,400filing

Sectors

Financials1
Not placed1

Buys in green, sells in red, by the company’s sector.

Related people

Mark D. KleinChairman, CEO and President · Chairman, CEO and President at Suro Capital, filing Form 4 there in the last year
Ronald M. LottDirector · Director at Suro Capital, filing Form 4 there in the last year
Erik A. FalkDirector · Director at Neostellar Capital, filing Form 4 there in the last year
Allison GreenOfficer · Officer at Suro Capital, filing Form 4 there in the last year
Leonard PotterDirector · Director at Suro Capital, filing Form 4 there in the last year