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CIK 0001175151 · Non-accelerated filer<br>Smaller reporting company

Cytosorbents Corp

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Ticker
CTSO
Exchange
Nasdaq
Industry
Surgical & Medical Instruments & Apparatus
FY end
Dec 31
Incorporated
DE
Entity type
operating
EIN
980373793
Phone
973-329-8885
Business address
305 COLLEGE ROAD EAST, PRINCETON, NJ, 08540
Former names
MedaSorb Technologies CORP, GILDER ENTERPRISES INC
Open-market buys, last 90 days
$120,435
in 4 filings
Open-market sales, last 90 days
$0
in 0 filings

Net +$120,435. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.

Pace of trading Bought Sold

Who's trading

90 days

  1. Chan Phillip P. +$93K Chief Executive Officer 2 filings
  2. Sobel Alan D. +$15K Director 1 filing
  3. Capponi Vincent +$13K President and COO 1 filing

Reading 63 more Form 4s from the SEC; this list fills in as they're read.

Date Insider Transaction Shares Price Value Owned after
2026-09-15 Chan Phillip P. Chief Executive Officer Purchase +3,774 $6.00 $23K 100,996
2026-09-15 Sobel Alan D. Director Purchase +1,900 $6.12 $12K 9,287
2026-09-15 Sobel Alan D. Director Purchase +500 $6.05 $3K 9,787
2026-09-15 Sobel Alan D. Director Purchase +100 $6.01 $601 9,887
2026-09-14 Capponi Vincent President and COO Purchase +1,800 $6.07 $11K 40,114
2026-09-14 Capponi Vincent President and COO Purchase +273 $5.90 $2K 40,387
2026-09-04 Chan Phillip P. Chief Executive Officer Purchase +200,000 $0.35 $70K 1,944,432
2026-06-15 MARIANI PETER J Chief Financial Officer Purchase +100,000 $0.44 $44K 638,113
2026-06-15 Chan Phillip P. Chief Executive Officer Purchase +10,333 $0.43 $4K 1,744,432
2026-06-12 Chan Phillip P. Chief Executive Officer Purchase +251,136 $0.40 $100K 1,734,099
2024-12-13 MARIANI PETER J Chief Financial Officer Purchase +20,000 $0.96 $19K 401,363
2024-12-12 MARIANI PETER J Chief Financial Officer Purchase +20,000 $0.89 $18K 381,363
2024-12-11 MARIANI PETER J Chief Financial Officer Purchase +11,363 $0.89 $10K 361,363
2023-12-13 Sobel Alan D. Director Purchase +22,557 $1.33 $30K 101,857
2023-12-13 Deliargyris Efthymios Chief Medical Officer Purchase +22,557 $1.33 $30K 348,433
2023-12-13 Capponi Vincent President & COO Purchase +18,797 $1.33 $25K 584,134
2023-12-13 BATOR MICHAEL G. Director Purchase +37,594 $1.33 $50K 125,394
2023-12-13 Jones Edward Raymond Director Purchase +7,519 $1.33 $10K 88,834
2023-12-13 BLOCH KATHLEEN P. Chief Financial Officer Purchase +37,594 $1.33 $50K 467,941
2023-12-13 Kim Jiny Director Purchase +7,519 $1.33 $10K 77,819

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