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Who

Alan D. Sobel

Director

Company insider

Files Form 4 as: Director, Cytosorbents.

Every Form 4 they filed

In numbers

Trades disclosed
34
Buys
3
Sells
0
Bought
$81K
Sold
$0
Companies
1
Companies where not an officer
1
First trade
8 Apr 2015
Last trade
15 Sep 2026
Last filed
16 Sep 2026

Companies traded

Everywhere else they filed: board seats, 10% stakes, other companies
CTSO CytosorbentsDirector · Medical Devices · last 15 Sep 20263 buys · 0 sells

Activity over time

1 Nov 2024 – 1 Oct 2026
01Nov 24May 25Nov 25Apr 26Oct 26

Buys above the line, sells below, each month.

Every trade

TradedCompanyWhatAmount
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$12K1,900 at $6.12filing
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$3,025500 at $6.05filing
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$601100 at $6.01filing
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$12K1,900 at $6.12filing
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$3,025500 at $6.05filing
15 Sep 2026filed 16 Sep 2026CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$601100 at $6.01filing
8 Aug 2025filed 8 Aug 2025CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code A—22,000 at $0.00filing
24 Feb 2025filed 26 Feb 2025CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code O$25K21,950 at $1.13filing
24 Feb 2025filed 26 Feb 2025CTSO CytosorbentsMedical DevicesSEC FORM 4 Code O$25K21,950 at $1.13filing
17 Jan 2025filed 22 Jan 2025CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code X—21,950 at $0.00filing
17 Jan 2025filed 22 Jan 2025CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code J—21,950filing
17 Jan 2025filed 22 Jan 2025CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code J—21,950filing
17 Jan 2025filed 22 Jan 2025CTSO CytosorbentsMedical DevicesSEC FORM 4 Code X$22K21,950 at $1.00filing
2 Apr 2024filed 4 Apr 2024CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code A—22,000filing
13 Dec 2023filed 15 Dec 2023CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code P—7,894filing
13 Dec 2023filed 15 Dec 2023CTSO CytosorbentsMedical DevicesSEC FORM 4 Bought$30K22,557 at $1.33filing
7 Jul 2023filed 11 Jul 2023CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code A—20,000 at $0.00filing
27 Feb 2023filed 1 Mar 2023CTSO CytosorbentsMedical DevicesSEC FORM 4 Code G—2,000 at $0.00filing
27 Feb 2023filed 1 Mar 2023CTSO CytosorbentsMedical DevicesSEC FORM 4 Code G—2,000 at $0.00filing
10 Aug 2022filed 12 Aug 2022CTSO Cytosorbentsoption or derivative · Medical DevicesSEC FORM 4 Code A—18,975 at $0.00filing

News

Critical Survey: Cytosorbents (NASDAQ:CTSO) & Trinity Biotech (NASDAQ:TRIB)CTSO · dailypolitical.com · 13 Oct 2026

0 headlines in the last 90 days name Alan D. Sobel; 1 article from the last 14 days about the 1 company they traded most, at most three about any one of them.

Sectors

Health Care3

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

Related people

Vincent CapponiPresident and COO · President and COO at Cytosorbents, filing Form 4 there in the last year
Phillip P. ChanChief Executive Officer · Chief Executive Officer at Cytosorbents, filing Form 4 there in the last year
Peter J. MarianiChief Financial Officer · Chief Financial Officer at Cytosorbents, filing Form 4 there in the last year