Cerus Corporation
US ˙ NasdaqGM ˙ US1570851014

SecurityCERS / Cerus Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,485,090 shares
Latest Disclosed Value $ 2,702,864
Northern Trust Corp reports 2.63% increase in ownership of CERS / Cerus Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,485,090 shares of Cerus Corporation (US:CERS) valued at $2,702,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,446,971 shares of Cerus Corporation. This represents a change in shares of 2.63% during the quarter. The current value of the position is $4,128,550 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 CERUS COM 157085101 1,485,090 38,119 2.63 2,703 -9.33 0.0001
2026-02-17 2025-12-31 13F CERUS COM 157085101 1,446,971 -90,517 -5.89 2,981 21.93 0.0001
2025-11-14 2025-09-30 13F CERUS COM 157085101 1,537,488 -35,434 -2.25 2,445 10.24 0.0003
2025-08-13 2025-06-30 13F CERUS COM 157085101 1,572,922 -24,507 -1.53 2,218 -0.14 0.0003
2025-05-13 2025-03-31 13F CERUS COM 157085101 1,597,429 -37,351 -2.28 2,220 -11.80 0.0003
2025-02-14 2024-12-31 13F CERUS COM 157085101 1,634,780 18,878 1.17 2,518 -10.46 0.0004
2024-11-13 2024-09-30 13F CERUS COM 157085101 1,615,902 52,396 3.35 2,812 2.18 0.0005
2024-08-14 2024-06-30 13F CERUS COM 157085101 1,563,506 -56,179 -3.47 2,752 -10.13 0.0005
2024-05-14 2024-03-31 13F CERUS COM 157085101 1,619,685 -16,977 -1.04 3,061 -13.41 0.0005
2024-02-13 2023-12-31 13F CERUS COM 157085101 1,636,662 -208,015 -11.28 3,535 18.31 0.0006
2023-11-13 2023-09-30 13F CERUS COM 157085101 1,844,677 -11,043 -0.60 2,988 -34.55 0.0006
2023-08-11 2023-06-30 13F CERUS COM 157085101 1,855,720 33,939 1.86 4,565 -15.62 0.0009
2023-05-15 2023-03-31 13F CERUS COM 157085101 1,821,781 12,362 0.68 5,411 -18.08 0.0011
2023-02-13 2022-12-31 13F CERUS COM 157085101 1,809,419 33,012 1.86 6,604 3.27 0.0014
2022-11-14 2022-09-30 13F CERUS COM 157085101 1,776,407 -14,565 -0.81 6,395 -32.49 0.0015
2022-08-12 2022-06-30 13F CERUS COM 157085101 1,790,972 -36,490 -2.00 9,473 -5.58 0.0020
2022-05-13 2022-03-31 13F CERUS COM 157085101 1,827,462 -74,486 -3.92 10,033 -22.54 0.0018
2022-02-08 2021-12-31 13F CERUS COM 157085101 1,901,948 -53,351 -2.73 12,953 8.77 0.0021
2021-11-15 2021-09-30 13F CERUS COM 157085101 1,955,299 25,106 1.30 11,909 4.40 0.0021
2021-08-13 2021-06-30 13F CERUS COM 157085101 1,930,193 -17,597 -0.90 11,407 -2.55 0.0020
2021-05-12 2021-03-31 13F CERUS COM 157085101 1,947,790 -156,635 -7.44 11,706 -19.62 0.0022
2021-02-11 2020-12-31 13F CERUS COM 157085101 2,104,425 -72,306 -3.32 14,563 6.87 0.0028
2020-11-16 2020-09-30 13F CERUS COM 157085101 2,176,731 -90,462 -3.99 13,627 -8.93 0.0030
2020-08-14 2020-06-30 13F CERUS COM 157085101 2,267,193 298,601 15.17 14,964 63.47 0.0035
2020-05-14 2020-03-31 13F CERUS COM 157085101 1,968,592 206,898 11.74 9,154 23.14 0.0026
2020-02-14 2019-12-31 13F CERUS COM 157085101 1,761,694 -33,686 -1.88 7,434 -19.67 0.0017
2019-11-13 2019-09-30 13F CERUS COM 157085101 1,795,380 88,613 5.19 9,254 -3.52 0.0022
2019-08-13 2019-06-30 13F CERUS COM 157085101 1,706,767 42,219 2.54 9,592 -7.51 0.0023
2019-05-13 2019-03-31 13F CERUS COM 157085101 1,664,548 34,750 2.13 10,371 25.51 0.0026
2019-02-12 2018-12-31 13F CERUS COM 157085101 1,629,798 -14,914 -0.91 8,263 -30.32 0.0023
2018-11-14 2018-09-30 13F CERUS COM 157085101 1,644,712 87,522 5.62 11,858 14.17 0.0029
2018-09-18 2018-06-30 13F/A-1 CERUS COM 157085101 1,557,190 94,527 6.46 10,386 29.58 0.0026
2018-08-14 2018-06-30 13F CERUS COM 157085101 1,565,303 102,640 10,440
2018-05-09 2018-03-31 13F CERUS COM 157085101 1,462,663 138,190 10.43 8,015 79.07 0.0021
2018-02-14 2017-12-31 13F CERUS COM 157085101 1,324,473 49,414 3.88 4,476 28.58 0.0011
2017-11-13 2017-09-30 13F CERUS COM 157085101 1,275,059 5,286 0.42 3,481 9.26 0.0009
2017-08-11 2017-06-30 13F CERUS COM 157085101 1,269,773 39,684 3.23 3,186 -41.80 0.0009
2017-05-12 2017-03-31 13F CERUS COM 157085101 1,230,089 6,861 0.56 5,474 2.86 0.0016
2017-02-13 2016-12-31 13F CERUS COM 157085101 1,223,228 -9,206 -0.75 5,322 -30.46 0.0016
2016-11-09 2016-09-30 13F CERUS COM 157085101 1,232,434 2,733 0.22 7,653 -0.26 0.0024
2016-08-12 2016-06-30 13F CERUS COM 157085101 1,229,701 38,885 3.27 7,673 10.15 0.0025
2016-08-19 2016-03-31 13F/A-1 CERUS COM 157085101 1,190,816 16,345 1.39 6,966 -6.16 0.0023
2016-05-13 2016-03-31 13F Cerus COMM 157085101 1,190,816 7,061
2016-02-12 2015-12-31 13F Cerus COMM 157085101 1,174,471 88,237 8.12 7,423 50.51 0.0025
2015-11-12 2015-09-30 13F Cerus COMM 157085101 1,086,234 67,633 6.64 4,932 -6.71 0.0016
2015-08-13 2015-06-30 13F CERUS COM 157085101 1,018,601 13,862 1.38 5,287 26.21 0.0036
2015-05-14 2015-03-31 13F Cerus COMM 157085101 1,004,739 106,536 11.86 4,189 -25.25 0.0013
2015-02-12 2014-12-31 13F Cerus COM 157085101 898,203 2,056 0.23 5,604 55.93 0.0017
2014-11-13 2014-09-30 13F Cerus COMM 157085101 896,147 74,969 9.13 3,594 5.46 0.0011
2014-08-14 2014-06-30 13F CERUS com 157085101 821,178 -151,035 -15.54 3,408 -26.98 0.0011
2014-05-14 2014-03-31 13F CERUS COMM 157085101 972,213 -34,443 -3.42 4,667 -28.11 0.0015
2014-02-21 2013-12-31 13F/A-1 CERUS COM 157085101 1,006,656 24,724 2.52 6,492 -1.62 0.0021
2014-02-12 2013-12-31 13F CERUS COM 157085101 1,006,656 6,492
2013-11-13 2013-09-30 13F CERUS COM 157085101 981,932 32,030 3.37 6,599 57.19 0.0023
2013-08-09 2013-06-30 13F CERUS COM 157085101 949,902 949,902 4,198 0.0015
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.