Genmab A/S - Depositary Receipt (Common Stock)
US ˙ NasdaqGS ˙ US3723032062

SecurityGMAB / Genmab A/S - Depositary Receipt (Common Stock)
InstitutionSei Investments Co
Latest Disclosed Ownership74,957 shares
Latest Disclosed Value $ 2,308,568
Sei Investments Co reports 3.93% increase in ownership of GMAB / Genmab A/S - Depositary Receipt (Common Stock)

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 74,957 shares of Genmab A/S - Depositary Receipt (Common Stock) (US:GMAB) valued at $2,308,676 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 72,121 shares of Genmab A/S - Depositary Receipt (Common Stock). This represents a change in shares of 3.93% during the quarter. The current value of the position is $1,789,973 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)
2026-02-13 2025-12-31 13F GENMAB A SPONSORED ADS 372303206 74,957 2,836 3.93 2,309 4.39 0.0023
2025-11-13 2025-09-30 13F GENMAB A SPONSORED ADS 372303206 72,121 10,010 16.12 2,212 72.33 0.0024
2025-08-14 2025-06-30 13F GENMAB A SPONSORED ADS 372303206 62,111 955 1.56 1,283 7.18 0.0015
2025-05-14 2025-03-31 13F/A-1 GENMAB A SPONSORED ADS 372303206 61,156 3,454 5.99 1,197 -0.58 0.0015
2025-05-13 2025-03-31 13F GENMAB A SPONSORED ADS 372303206 59,615 1,913 1,192 0.0013
2025-02-11 2024-12-31 13F GENMAB A SPONSORED ADS 372303206 57,702 20,525 55.21 1,205 32.89 0.0015
2024-11-12 2024-09-30 13F GENMAB A SPONSORED ADS 372303206 37,177 1,332 3.72 907 0.55 0.0012
2024-08-13 2024-06-30 13F GENMAB A SPONSORED ADS 372303206 35,845 -304 -0.84 901 -16.65 0.0013
2024-05-07 2024-03-31 13F GENMAB A SPONSORED ADS 372303206 36,149 -3,074 -7.84 1,082 -13.38 0.0016
2024-02-14 2023-12-31 13F GENMAB A SPONSORED ADS 372303206 39,223 -68,954 -63.74 1,249 -67.29 0.0020
2023-11-14 2023-09-30 13F GENMAB A SPONSORED ADS 372303206 108,177 1,234 1.15 3,815 -6.13 0.0069
2023-08-11 2023-06-30 13F GENMAB A SPONSORED ADS 372303206 106,943 -4,053 -3.65 4,065 -3.03 0.0071
2023-05-12 2023-03-31 13F GENMAB A SPONSORED ADS 372303206 110,996 13,863 14.27 4,191 1.82 0.0078
2023-02-10 2022-12-31 13F GENMAB A SPONSORED ADS 372303206 97,133 11,430 13.34 4,117 49.46 0.0091
2022-11-14 2022-09-30 13F GENMAB A SPONSORED ADS 372303206 85,703 13,038 17.94 2,754 17.84 0.0061
2022-08-15 2022-06-30 13F GENMAB A SPONSORED ADS 372303206 72,665 -502 -0.69 2,337 -11.14 0.0050
2022-05-13 2022-03-31 13F GENMAB A SPONSORED ADS 372303206 73,167 2,861 4.07 2,630 -5.09 0.0053
2022-02-14 2021-12-31 13F GENMAB A SPONSORED ADS 372303206 70,306 54,354 340.73 2,771 296.42 0.0052
2021-11-12 2021-09-30 13F GENMAB A SPONSORED ADS 372303206 15,952 -255,112 -94.12 699 -93.68 0.0015
2021-08-06 2021-06-30 13F GENMAB A SPONSORED ADS 372303206 271,064 103,694 61.95 11,065 101.36 0.0245
2021-05-12 2021-03-31 13F GENMAB A SPONSORED ADS 372303206 167,370 46,191 38.12 5,495 11.53 0.0138
2021-02-08 2020-12-31 13F GENMAB A SPONSORED ADS 372303206 121,179 61,688 103.69 4,927 126.22 0.0127
2020-12-04 2020-09-30 13F/A-1 GENMAB A SPONSORED ADS 372303206 59,491 6,343 11.93 2,178 20.93 0.0063
2020-11-06 2020-09-30 13F GENMAB A SPONSORED ADS 372303206 61,457 8,309 2,250 5,417.4997
2020-08-17 2020-06-30 13F/A-1 GENMAB A SPONSORED ADS 372303206 53,148 6,094 12.95 1,801 80.64 0.0056
2020-08-11 2020-06-30 13F GENMAB A SPONSORED ADS 372303206 39,425 -7,629 898 2,435.8728
2020-05-14 2020-03-31 13F GENMAB A SPONSORED ADS 372303206 47,054 9,166 24.19 997 17.85 0.0037
2020-02-06 2019-12-31 13F GENMAB A S SPONSORED ADS 372303206 37,888 37,888 846 0.0025
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.