Cytosorbents Corporation
US ˙ NasdaqCM ˙ US23283X2062

SecurityCTSO / Cytosorbents Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership92,540 shares
Latest Disclosed Value $ 52,406
Northern Trust Corp ownership in CTSO / Cytosorbents Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 92,540 shares of Cytosorbents Corporation (US:CTSO) valued at $52,405 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 92,540 shares of Cytosorbents Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $45,160 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F CYTOSORBENTS COM NEW 23283X206 92,540 0 0.00 52 -11.86 0.0000
2026-02-17 2025-12-31 13F CYTOSORBENTS COM NEW 23283X206 92,540 980 1.07 59 -30.59 0.0000
2025-11-14 2025-09-30 13F CYTOSORBENTS COM NEW 23283X206 91,560 0 0.00 86 -27.35 0.0000
2025-08-13 2025-06-30 13F CYTOSORBENTS COM NEW 23283X206 91,560 0 0.00 117 28.57 0.0000
2025-05-13 2025-03-31 13F CYTOSORBENTS COM NEW 23283X206 91,560 0 0.00 92 9.64 0.0000
2025-02-14 2024-12-31 13F CYTOSORBENTS COM NEW 23283X206 91,560 16,701 22.31 83 -25.89 0.0000
2024-11-13 2024-09-30 13F CYTOSORBENTS COM 23283X206 74,859 -2 -0.00 112 115.38 0.0000
2024-08-14 2024-06-30 13F CYTOSORBENTS COM 23283X206 74,861 -152 -0.20 53 -26.76 0.0000
2024-05-14 2024-03-31 13F CYTOSORBENTS COM 23283X206 75,013 0 0.00 71 -14.46 0.0000
2024-02-13 2023-12-31 13F CYTOSORBENTS COM 23283X206 75,013 -2 -0.00 83 -41.13 0.0000
2023-11-13 2023-09-30 13F CYTOSORBENTS COM 23283X206 75,015 0 0.00 141 -47.58 0.0000
2023-08-11 2023-06-30 13F CYTOSORBENTS COM 23283X206 75,015 1,347 1.83 269 8.47 0.0001
2023-05-15 2023-03-31 13F CYTOSORBENTS COM 23283X206 73,668 2,335 3.27 248 125.45 0.0000
2023-02-13 2022-12-31 13F CYTOSORBENTS COM 23283X206 71,333 0 0.00 111 13.40 0.0000
2022-11-14 2022-09-30 13F CYTOSORBENTS COM 23283X206 71,333 -250 -0.35 97 -38.22 0.0000
2022-08-12 2022-06-30 13F CYTOSORBENTS COM 23283X206 71,583 -290,811 -80.25 157 -86.42 0.0000
2022-05-13 2022-03-31 13F CYTOSORBENTS COM 23283X206 362,394 -16,858 -4.45 1,156 -27.20 0.0002
2022-02-08 2021-12-31 13F CYTOSORBENTS COM 23283X206 379,252 -3,229 -0.84 1,588 -48.87 0.0003
2021-11-15 2021-09-30 13F CYTOSORBENTS COM 23283X206 382,481 -23,130 -5.70 3,106 1.44 0.0005
2021-08-13 2021-06-30 13F CYTOSORBENTS COM NEW 23283X206 405,611 -21,397 -5.01 3,062 -17.42 0.0005
2021-05-12 2021-03-31 13F CYTOSORBENTS COM NEW 23283X206 427,008 -30,117 -6.59 3,708 1.76 0.0007
2021-02-11 2020-12-31 13F CYTOSORBENTS COM NEW 23283X206 457,125 1,963 0.43 3,644 0.39 0.0007
2020-11-16 2020-09-30 13F CYTOSORBENTS COM NEW 23283X206 455,162 95,897 26.69 3,630 2.05 0.0008
2020-08-14 2020-06-30 13F CYTOSORBENTS COM 23283X206 359,265 10,364 2.97 3,557 31.89 0.0008
2020-05-14 2020-03-31 13F CYTOSORBENTS COM NEW 23283X206 348,901 -13,850 -3.82 2,697 93.19 0.0008
2020-02-14 2019-12-31 13F CYTOSORBENTS COM NEW 23283X206 362,751 -3,059 -0.84 1,396 -24.13 0.0003
2019-11-13 2019-09-30 13F CYTOSORBENTS COM 23283X206 365,810 11,363 3.21 1,840 -21.47 0.0004
2019-08-13 2019-06-30 13F CYTOSORBENTS COM NEW 23283X206 354,447 5,852 1.68 2,343 -11.22 0.0006
2019-05-13 2019-03-31 13F CYTOSORBENTS COM NEW 23283X206 348,595 -4,581 -1.30 2,639 -7.53 0.0007
2019-02-12 2018-12-31 13F CYTOSORBENTS COM NEW 23283X206 353,176 -7,640 -2.12 2,854 -38.69 0.0008
2018-11-14 2018-09-30 13F CYTOSORBENTS COM NEW 23283X206 360,816 51,548 16.67 4,655 32.02 0.0011
2018-09-18 2018-06-30 13F/A-1 CYTOSORBENTS COM 23283X206 309,268 261,154 542.78 3,526 940.12 0.0009
2018-08-14 2018-06-30 13F CYTOSORBENTS COM 23283X206 309,268 261,154 3,526
2018-05-09 2018-03-31 13F CYTOSORBENTS COM 23283X206 48,114 0 0.00 339 8.31 0.0001
2018-02-14 2017-12-31 13F CYTOSORBENTS COM 23283X206 48,114 -651 -1.33 313 3.64 0.0001
2017-11-13 2017-09-30 13F CYTOSORBENTS COM 23283X206 48,765 11,925 32.37 302 91.14 0.0001
2017-08-11 2017-06-30 13F CYTOSORBENTS COM 23283X206 36,840 0 0.00 158 -4.82 0.0000
2017-05-12 2017-03-31 13F CYTOSORBENTS COM 23283X206 36,840 12,266 49.91 166 23.88 0.0000
2017-02-13 2016-12-31 13F CYTOSORBENTS COM 23283X206 24,574 865 3.65 134 -11.84 0.0000
2016-11-09 2016-09-30 13F CYTOSORBENTS COM 23283X206 23,709 0 0.00 152 40.74 0.0000
2016-08-12 2016-06-30 13F CYTOSORBENTS COM 23283X206 23,709 0 0.00 108 16.13 0.0000
2016-08-19 2016-03-31 13F/A-1 CYTOSORBENTS COM 23283X206 23,709 0 0.00 93 -29.55 0.0000
2016-05-13 2016-03-31 13F CYTOSORBENTS COM 23283X206 23,709 93
2016-02-12 2015-12-31 13F CYTOSORBENTS COM 23283X206 23,709 0 0.00 132 -12.00 0.0000
2015-11-12 2015-09-30 13F CYTOSORBENTS COM 23283X206 23,709 4,167 21.32 150 25.00 0.0001
2015-08-13 2015-06-30 13F CYTOSORBENTS COM 23283X206 19,542 4,458 29.55 120 -39.70 0.0001
2015-05-14 2015-03-31 13F CYTOSORBENTS COM 23283X206 15,084 15,084 199 0.0001
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.