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David Michael Harper Insider Profile

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David Michael Harper, President & Chief Executive Officer, Ten Percent Owner at Geodrill, holds 19.04M shares in Geodrill (Ticker: TSE:GEO). Most recently, David Michael Harper Bought 1,000 shares of Geodrill on Sep 10, 2026 for an estimated value of C$2.69K.
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David Michael Harper

David Michael Harper
Geodrill (GEO)
President & Chief Executive Officer, Ten Percent Owner

Ranked #17,889 out of 108,921 Corporate Insiders

Profitable Transactions

27%
3 out of 11 Profitable Transactions

Average Return

+10.90%
Average return per transaction
Time Frame
1 Year
Compare to
No Benchmark
How are Insiders Ranked?

Insider Holdings

C$51M
100.00%
A breakdown of David Michael Harper's holdings
See the Top Stocks by Insiders

Insider Roles

Geodrill
(GEO)
President & Chief Executive Officer, Ten Percent Owner
Roles that David Michael Harper holds in companies
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Most Profitable Insider Trade

Stock:
Geodrill
(GEO)
Rating:Informative Buy
Date:Apr 02, 2020 - Apr 02, 2021
Return:+74.20%
The most profitable trade made by David Michael Harper
See the Latest Stocks Traded by Insiders

David Michael Harper's Trading History

Company Name
Last Transaction Date
Insider Position
Last Transaction
Last Transaction Amount
Holding Value
GEO
Geodrill
Sep 10, 2026
President & Chief Executive Officer, Ten Percent Owner
Informative Buy
2.69K
C$50.84M
Success Rate for
GEO
3 out of 11 profitable transactions on
GEO
27%
Average Return for
GEO
Average return per transaction on
GEO
+10.94%
Date
Transaction
Amount
No. of Shares
Price per Share
Profit
Link to Report
Apr 05, 2013
Informative Buy
C$121.03K
123,500
C$0.98
―
Apr 02, 2020
Informative Buy
C$13.48K
10,600
C$1.27
+74.20%
Jun 28, 2024
Informative Buy
C$80.42K
40,000
C$2.01
+53.60%
Aug 20, 2026
Informative Buy
C$10.16K
4,000
C$2.54
-1.00%
Aug 22, 2026
Informative Buy
C$12.76K
4,800
C$2.66
-4.50%
List of latest transactions for each holding click on a transaction to see David Michael Harper's performance on stock
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David Michael Harper insider profile FAQ

What is the percentage of profitable transactions made by David Michael Harper?
The percentage of profitable transactions made by David Michael Harper is 27%.
    What is the average return per transaction made by David Michael Harper?
    The average return per transaction made by David Michael Harper is 10.90%.
      What stocks does David Michael Harper hold?
      David Michael Harper holds: TSE:GEO stocks.
        What was David Michael Harper’s latest transaction?
        David Michael Harper latest transaction was an Informative Buy of C$2.69K.
          What was David Michael Harper's most profitable transaction?
          David Michael Harper’s most profitable transaction was an Informative Buy of TSE:GEO stock on April 2, 2020. The return on the trade was 74.20%.
            What is David Michael Harper's role in Geodrill?
            David Michael Harper's role in Geodrill is President & Chief Executive Officer, 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.