Cerus Corporation
US ˙ NasdaqGM ˙ US1570851014

SecurityCERS / Cerus Corporation
InstitutionSepio Capital, LP
Latest Disclosed Ownership295,500 shares
Latest Disclosed Value $ 537,810
Sepio Capital, LP ownership in CERS / Cerus Corporation

On May 13, 2026 - Sepio Capital, LP filed a 13F-HR form disclosing ownership of 295,500 shares of Cerus Corporation (US:CERS) valued at $537,810 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 295,500 shares of Cerus Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $821,490 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)
2026-05-13 2026-03-31 13F CERUS COM 157085101 295,500 0 0.00 538 -11.68 0.0292
2026-02-12 2025-12-31 13F CERUS COM 157085101 295,500 0 0.00 609 29.64 0.0333
2025-11-13 2025-09-30 13F CERUS COM 157085101 295,500 0 0.00 470 12.74 0.0278
2025-08-13 2025-06-30 13F CERUS COM 157085101 295,500 -8,000 -2.64 417 -1.19 0.0297
2025-05-15 2025-03-31 13F CERUS COM 157085101 303,500 -340,000 -52.84 422 -57.47 0.0334
2025-02-13 2024-12-31 13F CERUS COM 157085101 643,500 -504,000 -43.92 991 -50.40 0.0793
2024-11-14 2024-09-30 13F CERUS COM 157085101 1,147,500 -200,000 -14.84 1,997 -15.85 0.1554
2024-08-15 2024-06-30 13F CERUS COM 157085101 1,347,500 0 0.00 2,372 -6.83 0.2175
2024-05-15 2024-03-31 13F CERUS COM 157085101 1,347,500 1,200,000 813.56 2,547 700.63 0.2185
2024-02-09 2023-12-31 13F CERUS COM 157085101 147,500 -3,349,907 -95.78 319 -93.98 0.0268
2023-11-08 2023-09-30 13F CERUS COM 157085101 3,497,407 3,104,062 789.14 5,280 1,282.20 0.4560
2023-08-08 2023-06-30 13F CERUS COM 157085101 393,345 96,855 32.67 382 -56.59 0.0310
2023-05-10 2023-03-31 13F CERUS COM 157085101 296,490 -227,325 -43.40 881 -15.63 0.0812
2023-02-03 2022-12-31 13F CERUS COM 157085101 523,815 240,625 84.97 1,043 2.36 0.0901
2022-10-28 2022-09-30 13F CERUS COM 157085101 283,190 -237,525 -45.62 1,019 -31.84 0.1011
2022-07-26 2022-06-30 13F CERUS COM 157085101 520,715 2,200 0.42 1,495 -2.92 0.1502
2022-05-09 2022-03-31 13F CERUS COM 157085101 518,515 222,725 75.30 1,540 -23.54 0.1351
2022-01-25 2021-12-31 13F CERUS COM 157085101 295,790 -2,700 -0.90 2,014 10.78 0.1488
2021-11-03 2021-09-30 13F CERUS COM 157085101 298,490 2,700 0.91 1,818 4.00 0.1499
2021-07-29 2021-06-30 13F/A-1 CERUS COM 157085101 295,790 -3,700 -1.24 1,748 -2.89 0.1440
2021-07-26 2021-06-30 13F CERUS COM 157085101 295,790 -3,700 1,748 0.1507
2021-05-10 2021-03-31 13F CERUS COM 157085101 299,490 -347,500 -53.71 1,800 -59.79 0.1658
2021-02-10 2020-12-31 13F CERUS COM 157085101 646,990 156,670 31.95 4,477 45.88 0.3864
2020-11-12 2020-09-30 13F CERUS COM 157085101 490,320 8,640 1.79 3,069 -3.46 0.3333
2020-08-04 2020-06-30 13F CERUS COM 157085101 481,680 118,000 32.45 3,179 88.00 0.3734
2020-04-29 2020-03-31 13F CERUS COM 157085101 363,680 135,167 59.15 1,691 75.41 0.2239
2020-02-06 2019-12-31 13F CERUS COM 157085101 228,513 -7,050 -2.99 964 -20.59 0.0912
2019-10-25 2019-09-30 13F CERUS COM 157085101 235,563 -1,464,470 -86.14 1,214 -87.29 0.1253
2019-08-08 2019-06-30 13F CERUS COM 157085101 1,700,033 0 0.00 9,554 -9.79 1.2901
2019-06-21 2019-03-31 13F/A-1 CERUS COM 157085101 1,700,033 -1,684,384 -49.77 10,591 -33.61 1.4292
2019-05-14 2019-03-31 13F CERUS COM 157085101 1,700,033 -1,684,384 10,591 1.5661
2019-02-13 2018-12-31 13F CERUS COM 157085101 3,384,417 3,384,417 15,952 1.1596
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.