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Takeshi Koyama

Group Chief Strategy Officer of Mizuho Financial Group

As of Nov 11, 2026: Takeshi Koyama (CSO, MFG) reported no shares bought or sold themselves in the last 12 months (Form 4). MFG's Quality Score is 7. Scores as of Tuesday 11:52 PM ET, 15 minutes behind.

No shares they bought or sold themselves in the last 12 months. Their newest Form 4, for Jun 1: stock unit conversion (1,048 MFG shares).

Bought: $0, 12 monthsSold: $0, 12 monthsLast filed: Jun 1, stock unit conversion

From SEC Form 4s · Insiders have 2 business days to file a trade

Every trade Takeshi Koyama reported

None in the last 12 months, as filed.

Every Form 4 Takeshi Koyama filed, as filed, on EDGAR

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Takeshi Koyama's companies

Where Takeshi Koyama files, with the stock's Quality Score
StockTradesQuality Score
Mizuho Financial Group (MFG) logoMizuho Financial Group (MFG) logoMFGMizuho FinancialCSO07

Alerts for Takeshi Koyama

An email for each Form 4 Takeshi Koyama files, with the stock's Quality Score.
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Kept by Andrew Gomes, Breakaway's founder, from the SEC's Form 4 filings. Updated Jun 1, 2026.

Their filings on the SEC's site

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How to cite

Breakaway, Takeshi Koyama: Group Chief Strategy Officer at MFG, Jun 1, 2026, getbreakaway.com/insiders/takeshi-koyama

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