Digimarc Corporation
US ˙ NasdaqGS ˙ US25381B1017

SecurityDMRC / Digimarc Corporation
InstitutionSamjo Management, LLC
Latest Disclosed Ownership19,375 shares
Latest Disclosed Value $ 95,131
Samjo Management, LLC ownership in DMRC / Digimarc Corporation

On May 15, 2026 - Samjo Management, LLC filed a 13F-HR form disclosing ownership of 19,375 shares of Digimarc Corporation (US:DMRC) valued at $95,131 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 17, 2026 disclosing 19,375 shares of Digimarc Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $279,581 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)
2026-05-15 2026-03-31 13F DIGIMARC CORP COM 25381B101 19,375 0 0.00 95 -25.20 0.0298
2026-02-17 2025-12-31 13F/A-1 DIGIMARC CORP COM 25381B101 19,375 0 0.00 127 -32.80 0.0491
2026-02-13 2025-12-31 13F DIGIMARC CORP COM 25381B101 19,375 0 127 0.0527
2025-11-13 2025-09-30 13F DIGIMARC CORP COM 25381B101 19,375 -17,700 -47.74 189 -61.35 0.0723
2025-08-13 2025-06-30 13F DIGIMARC CORP COM 25381B101 37,075 1,350 3.78 490 7.00 0.2067
2025-05-14 2025-03-31 13F DIGIMARC CORP COM 25381B101 35,725 -99,571 -73.59 458 -90.98 0.1942
2025-02-13 2024-12-31 13F DIGIMARC CORP COM 25381B101 135,296 59,896 79.44 5,067 150.05 1.9104
2024-11-12 2024-09-30 13F DIGIMARC CORP COM 25381B101 75,400 13,000 20.83 2,027 4.70 0.6993
2024-08-13 2024-06-30 13F/A-1 DIGIMARC CORP COM 25381B101 62,400 31,500 101.94 1,935 130.63 0.7207
2024-08-12 2024-06-30 13F DIGIMARC CORP COM 25381B101 118,900 88,000 3,687 0.6320
2024-05-14 2024-03-31 13F DIGIMARC CORP COM 25381B101 30,900 100 0.32 840 -24.55 0.2954
2024-02-09 2023-12-31 13F DIGIMARC CORP COM 25381B101 30,800 30,800 1,112 0.3940
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.