Northern Dynasty Minerals Ltd.
CA ˙ TSX ˙ CA66510M2040
3,11 CA$ 0,00 (0,00%)
2026-06-04
AKTIENPREIS
SecurityCA:NDM / Northern Dynasty Minerals Ltd.
InstitutionSei Investments Co
Latest Disclosed Ownership1,835,833 shares
Latest Disclosed Value $ 3,616,591
Sei Investments Co ownership in NDM / Northern Dynasty Minerals Ltd.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 1,835,833 shares of Northern Dynasty Minerals Ltd. (CA:NDM) valued at $4,956,749 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 1,835,833 shares of Northern Dynasty Minerals Ltd.. This represents a change in shares of 0.00% during the quarter. The current value of the position is $5,709,441 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 NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,835,833 0 0.00 3,617 64.14 0.0036
2025-11-13 2025-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,835,833 -4,562 -0.25 2,203 -10.67 0.0024
2025-08-14 2025-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 2,466 16.54 0.0029
2025-05-14 2025-03-31 13F/A-1 NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 2,116 97.76 0.0027
2025-05-13 2025-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 1,070 0.0012
2025-02-11 2024-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 1,070 75.41 0.0014
2024-11-12 2024-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 610 6.83 0.0008
2024-08-13 2024-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 571 -2.39 0.0008
2024-05-07 2024-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 585 -1.68 0.0009
2024-02-14 2023-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 595 -0.50 0.0010
2023-11-14 2023-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 598 35.60 0.0011
2023-08-11 2023-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 442 0.46 0.0008
2023-05-12 2023-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 439 8.13 0.0008
2023-02-10 2022-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 406 -9.58 0.0009
2022-11-14 2022-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 449 -6.46 0.0010
2022-08-15 2022-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 480 -37.17 0.0010
2022-05-13 2022-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 764 27.33 0.0015
2022-02-14 2021-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 600 -28.99 0.0011
2021-11-12 2021-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 845 -6.63 0.0018
2021-08-06 2021-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 905 -22.45 0.0020
2021-05-12 2021-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 0 0.00 1,167 96.80 0.0029
2021-02-08 2020-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,840,395 423,746 29.91 593 -57.31 0.0015
2020-12-04 2020-09-30 13F/A-1 NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,416,649 468,191 49.36 1,389 2.43 0.0040
2020-11-06 2020-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 1,418,999 470,541 1,391 3,861.2246
2020-08-17 2020-06-30 13F/A-1 NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 948,458 -2,350 -0.25 1,356 270.49 0.0042
2020-08-11 2020-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 948,458 -2,350 406 1,101.2966
2020-05-14 2020-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 950,808 0 0.00 366 -10.07 0.0013
2020-02-06 2019-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 950,808 65,526 7.40 407 -21.73 0.0012
2019-11-12 2019-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 885,282 0 0.00 520 -2.44 0.0013
2019-08-14 2019-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 885,282 748,218 545.89 533 550.00 0.0017
2019-05-15 2019-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 137,064 137,064 -84.52 82 -84.62 0.0003
2018-08-03 2018-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 0 -362 -100.00 0 -100.00 0.0000
2018-05-11 2018-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 362 0 0.00 0 -100.00
2018-02-08 2017-12-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 362 0 0.00 1 0.00 0.0000
2017-11-06 2017-09-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 362 0 0.00 1 0.00 0.0000
2017-07-31 2017-06-30 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 362 0 0.00 1 0.00 0.0000
2017-05-05 2017-03-31 13F NORTHERN DYNASTY MINERALS LT COM NEW 66510M204 362 362 1 0.0000
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.