Denison Mines Corp.
US ˙ NYSEAM ˙ CA2483561072

SecurityDNN / Denison Mines Corp.
InstitutionPacifica Partners Inc.
Latest Disclosed Ownership29,696 shares
Latest Disclosed Value $ 105,028
Pacifica Partners Inc. reports 34.66% decrease in ownership of DNN / Denison Mines Corp.

On April 9, 2026 - Pacifica Partners Inc. filed a 13F-HR form disclosing ownership of 29,696 shares of Denison Mines Corp. (US:DNN) valued at $104,827 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 9, 2026 disclosing 45,446 shares of Denison Mines Corp.. This represents a change in shares of -34.66% during the quarter. The current value of the position is $101,263 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)
2026-04-09 2026-03-31 13F DENISON MINES COM 248356107 29,696 -15,750 -34.66 105 -22.79 0.0293
2026-01-09 2025-12-31 13F DENISON MINES COM 248356107 45,446 146 0.32 137 9.68 0.0607
2025-10-09 2025-09-30 13F DENISON MINES COM 248356107 45,300 0 0.00 125 55.00 0.0446
2025-07-14 2025-06-30 13F DENISON MINES COM 248356107 45,300 0 0.00 81 42.86 0.0327
2025-04-08 2025-03-31 13F DENISON MINES COM 248356107 45,300 -22,000 -32.69 56 -59.42 0.0257
2025-01-14 2024-12-31 13F DENISON MINES COM 248356107 67,300 0 0.00 139 13.11 0.0599
2024-10-07 2024-09-30 13F DENISON MINES COM 248356107 67,300 0 0.00 123 -13.48 0.0506
2024-07-11 2024-06-30 13F DENISON MINES COM 248356107 67,300 0 0.00 141 9.30 0.0607
2024-04-12 2024-03-31 13F DENISON MINES COM 248356107 67,300 0 0.00 130 5.74 0.0575
2024-01-08 2023-12-31 13F DENISON MINES COM 248356107 67,300 0 0.00 122 17.31 0.0602
2023-10-10 2023-09-30 13F DENISON MINES COM 248356107 67,300 0 0.00 105 26.83 0.0571
2023-07-17 2023-06-30 13F DENISON MINES COM 248356107 67,300 0 0.00 82 24.24 0.0465
2023-04-11 2023-03-31 13F DENISON MINES COM 248356107 67,300 0 0.00 66 -15.38 0.0398
2023-01-19 2022-12-31 13F/A-1 DENISON MINES COM 248356107 67,300 26,000 62.95 78 52.94 0.0531
2023-01-12 2022-12-31 13F DENISON MINES COM 248356107 67,300 26,000 78 52.9690
2022-10-14 2022-09-30 13F DENISON MINES COM 248356107 41,300 0 0.00 51 15.91 0.0369
2022-07-22 2022-06-30 13F DENISON MINES COM 248356107 41,300 0 0.00 44 -32.31 0.0303
2022-04-12 2022-03-31 13F DENISON MINES COM 248356107 41,300 0 0.00 65 8.33 0.0423
2022-01-13 2021-12-31 13F DENISON MINES COM 248356107 41,300 -12,000 -22.51 60 -15.49 0.0392
2021-10-07 2021-09-30 13F DENISON MINES COM 248356107 53,300 -40,000 -42.87 71 -36.61 0.0517
2021-07-14 2021-06-30 13F DENISON MINES COM 248356107 93,300 0 0.00 112 -5.88 0.0851
2021-04-08 2021-03-31 13F DENISON MINES COM 248356107 93,300 -8,500 -8.35 119 91.94 0.0980
2021-01-13 2020-12-31 13F DENISON MINES COM 248356107 101,800 0 0.00 62 44.19 0.0598
2020-10-13 2020-09-30 13F DENISON MINES COM 248356107 101,800 0 0.00 43 16.22 0.0468
2020-07-15 2020-06-30 13F DENISON MINES COM 248356107 101,800 0 0.00 37 23.33 0.0411
2020-04-15 2020-03-31 13F DENISON MINES COM 248356107 101,800 0 0.00 30 -28.57 0.0373
2020-02-04 2019-12-31 13F DENISON MINES COM 248356107 101,800 101,800 42 0.0407
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.