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Brian Richard Ostroff Insider Profile

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Brian Richard Ostroff, Head of Strategy at Arianne Phosphate, holds 5.37M shares in Arianne Phosphate (Ticker: DRRSF), holds 4.33M shares in Madoro Metals Corp (Ticker: TSE:MDM). Most recently, Brian Richard Ostroff Bought ― shares of Arianne Phosphate on Dec 12, 2025 for an estimated value of $70.47K.

Brian Richard Ostroff's Trading History

DRRSF
Arianne Phosphate
Dec 12, 2025Head of StrategyInformative Buy70.47K$983.28K
MDM
Madoro Metals Corp
Jun 11, 2022DirectorUninformative Buy―C$194.72K

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Brian Richard Ostroff insider profile FAQ

What is the percentage of profitable transactions made by Brian Richard Ostroff?
The percentage of profitable transactions made by Brian Richard Ostroff is 58%.
What is the average return per transaction made by Brian Richard Ostroff?
The average return per transaction made by Brian Richard Ostroff is -6.20%.
What stocks does Brian Richard Ostroff hold?
Brian Richard Ostroff holds: DRRSF, TSE:MDM stocks.
What was Brian Richard Ostroff’s latest transaction?
Brian Richard Ostroff’s latest transaction was an Informative Buy of $70.47K.
What was Brian Richard Ostroff's most profitable transaction?
Brian Richard Ostroff’s most profitable transaction was an Informative Buy of DRRSF stock on December 11, 2014. The return on the trade was 32.80%.
What is Brian Richard Ostroff's role in Arianne Phosphate?
Brian Richard Ostroff's role in Arianne Phosphate is Head of Strategy.
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