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Denison Mines Corp. Insider Profile

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Denison Mines Corp., Ten Percent Owner at Cosa Resources Corp., holds 23.90M shares in Cosa Resources Corp. (Ticker: TSE:COSA), holds 3.45M shares in Foremost Lithium Resource & Technology Ltd (Ticker: TSE:FAT), holds 5.40M shares in Skyharbour Resources (Ticker: TSE:SYH). Most recently, Denison Mines Corp. Bought ― shares of Cosa Resources Corp. on Jul 16, 2026 for an estimated value of C$1.49M.
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Denison Mines Corp.

Denison Mines Corp.
Cosa Resources Corp. (COSA)
Ten Percent Owner

Ranked #40,678 out of 108,921 Corporate Insiders

Profitable Transactions

33%
3 out of 9 Profitable Transactions

Average Return

+1.90%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

C$20M
63.89%
23.31%
12.80%
A breakdown of Denison Mines Corp.'s holdings
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Insider Roles

Cosa Resources Corp.
(COSA)
Ten Percent Owner
Foremost Lithium Resource & Technology Ltd
(FAT)
Ten Percent Owner
Skyharbour Resources
(SYH)
Ten Percent Owner
Roles that Denison Mines Corp. holds in companies
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Most Profitable Insider Trade

Stock:
Cosa Resources Corp.
(COSA)
Rating:Informative Buy
Date:Feb 27, 2025 - Feb 27, 2026
Return:+131.10%
The most profitable trade made by Denison Mines Corp.
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Denison Mines Corp.'s Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
COSA
Cosa Resources Corp.
Jul 16, 2026
Ten Percent Owner
Informative Buy
1.49M
C$12.66M
SYH
Skyharbour Resources
Apr 24, 2017
Ten Percent Owner
Informative Buy
200.00K
C$2.54M
FAT
Foremost Lithium Resource & Technology Ltd
Jul 10, 2026
Ten Percent Owner
Informative Buy
2.00M
C$4.62M
List of latest transactions for each holding click on a transaction to see Denison Mines Corp.'s performance on stock
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Denison Mines Corp. insider profile FAQ

What is the percentage of profitable transactions made by Denison Mines Corp.?
The percentage of profitable transactions made by Denison Mines Corp. is 33%.
    What is the average return per transaction made by Denison Mines Corp.?
    The average return per transaction made by Denison Mines Corp. is 1.90%.
      What stocks does Denison Mines Corp. hold?
      Denison Mines Corp. holds: TSE:COSA, TSE:SYH, TSE:FAT stocks.
        What was Denison Mines Corp.’s latest transaction?
        Denison Mines Corp. latest transaction was an Informative Buy of C$1.49M.
          What was Denison Mines Corp.'s most profitable transaction?
          Denison Mines Corp.’s most profitable transaction was an Informative Buy of TSE:COSA stock on February 27, 2025. The return on the trade was 131.10%.
            What is Denison Mines Corp.'s role in Cosa Resources Corp.?
            Denison Mines Corp.'s role in Cosa Resources Corp. is Ten Percent Owner.
              How can I follow the stock ratings of top corporate insiders?
              Head over to our Expert Center to see a list of the Top 100 corporate insiders and follow the corporate insiders of your choice. Visit their profiles for more details about their stock transactions and see how they perform on a stock-by-stock basis.