Cytosorbents Corp (CTSO)

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Sector: Surgical & Medical Instruments & Apparatus

Hedge Fund Popularity

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Hedge Fund Holdings

Filing Period:

Last updated on November 21, 2025, 5:44pm based on SEC 13F filings Last update: November 21, 2025, 5:44pm

No.	Hedge Fund	Shares	Value	Activity	% Port
1.	Skylands Capital Charles Paquelet	2,127,265	$1,987,078	-19%	0.27%
2.	Renaissance Technologies Jim Simons	134,805	$125,921	+16%	0%
3.	Citadel Investment Group Ken Griffin	65,690	$61,361		0%
4.	Centiva Capital Karim Abbadi And Edward Mcbride	10,737	$10,029		0%
5.	Citadel Investment GroupCALL Ken Griffin	0	$0		0%

Insider Trading: Purchases See All

Insider	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
Mariani Officer	$0.96	20,000	$19,294.00	401,363	2024-12-13	Filing
Mariani Officer	$0.89	20,000	$17,872.00	381,363	2024-12-12	Filing
Mariani Officer	$0.89	11,363	$10,102.84	361,363	2024-12-11	Filing
Sobel Director	$1.33	22,557	$30,000.81	101,857	2023-12-13	Filing
Deliargyris Officer	$1.33	22,557	$30,000.81	348,433	2023-12-13	Filing

Insider Trading: Sales See All

Insider	Price	Amount	Total Value	Remaining Holdings	Date	Form 4
Kraus Director	$9.40	4,000	$37,591.20	125,046	2021-08-31	Filing
Kraus Director	$8.00	8,000	$64,000.00	125,046	2020-11-10	Filing
Capponi Officer	$10.00	10,000	$100,000.00	417,649	2020-04-27	Filing
Capponi Officer	$6.00	4,677	$28,062.00	417,649	2020-03-10	Filing
Chan Officer, Director	$9.37	24,337	$228,025.52	503,281	2018-12-07	Filing

Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Avenir Corp	5,082,838	$4,747,879	0.49%
2.	Vanguard Group Inc	2,204,294	$2,058,811	0%
3.	Neuberger Berman Group Llc	1,597,998	$1,490,906	0%
4.	Cm Management, Llc	1,288,128	$1,203,240	1%
5.	Blackrock, Inc.	764,809	$714,408	0%