NYSE:MFG

Mizuho Financial Group Stock Insider Trading

Financial Services > Banks - Regional

Buy MFG

*Your capital is at risk

$9.52

-0.270 (-2.76%)

At Close: Jun 05, 2026

Mizuho Financial Group Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -84.86. In total, the insiders bought 350.85K and sold 1.97K MFG shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-84.86
● Buy	350.85K shares
● Sell	1.97K shares
95% Buy Activity Moderate Positive Correlation
Sell Signal High Confidence Jun 01, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -84.86. Partially supported by a positive historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jun 01, 2026 Buy	Common Stock M-Exempt	Kurosawa Tatsuya Group Chief Governance Officer	Officer	719 Value: $6K
Jun 01, 2026 Sell	Common Stock D-Return	Kurosawa Tatsuya Group Chief Governance Officer	Officer	288 Value: $3.74M
Jun 01, 2026 Buy	Phantom Stock Units M-Exempt	Kurosawa Tatsuya Group Chief Governance Officer	Officer	719 Value: $6K
Jun 01, 2026 Buy	Common Stock M-Exempt	Komatsu Minori See Remarks	Officer	659 Value: $6K
Jun 01, 2026 Sell	Common Stock D-Return	Komatsu Minori See Remarks	Officer	264 Value: $3.14M
Jun 01, 2026 Buy	Phantom Stock Units M-Exempt	Komatsu Minori See Remarks	Officer	659 Value: $6K
Jun 01, 2026 Buy	Common Stock M-Exempt	Koyama Takeshi Group Chief Strategy Officer	Officer	1 048 Value: $9K
Jun 01, 2026 Sell	Common Stock D-Return	Koyama Takeshi Group Chief Strategy Officer	Officer	420 Value: $7.96M
Jun 01, 2026 Buy	Phantom Stock Units M-Exempt	Koyama Takeshi Group Chief Strategy Officer	Officer	1 048 Value: $9K
Jun 01, 2026 Buy	Common Stock M-Exempt	Samejima Makoto Group Chief Financial Officer	C-Suite Officer	1 703 Value: $15.4K
Jun 01, 2026 Sell	Common Stock D-Return	Samejima Makoto Group Chief Financial Officer	C-Suite Officer	682 Value: $21.0M
Jun 01, 2026 Buy	Phantom Stock Units M-Exempt	Samejima Makoto Group Chief Financial Officer	C-Suite Officer	1 703 Value: $15.4K
Jun 01, 2026 Buy	Common Stock M-Exempt	Akamatsu Fusae Group Chief Compliance Officer	Officer	778 Value: $7K
Jun 01, 2026 Sell	Common Stock D-Return	Akamatsu Fusae Group Chief Compliance Officer	Officer	312 Value: $4.39M
Jun 01, 2026 Buy	Phantom Stock Units M-Exempt	Akamatsu Fusae Group Chief Compliance Officer	Officer	778 Value: $7K
Apr 01, 2026 Buy	Common Stock	Matsuura Shuji See Remarks	Officer	0 Value: $0
Apr 01, 2026 Buy	Phantom Stock Units - Retirement	Matsuura Shuji See Remarks	Officer	17 508 Value: $146.7K
Apr 01, 2026 Buy	Phantom Stock Units	Matsuura Shuji See Remarks	Officer	1 265 Value: $10.6K
Apr 01, 2026 Buy	Common Stock	Tsujimori Hideki Chief Process Officer	Officer	0 Value: $0
Apr 01, 2026 Buy	Common Stock	Tsujimori Hideki Chief Process Officer	Officer	0 Value: $0
Apr 01, 2026 Buy	Phantom Stock Units - Retirement	Tsujimori Hideki Chief Process Officer	Officer	2 150 Value: $18.0K
Apr 01, 2026 Buy	Phantom Stock Units	Tsujimori Hideki Chief Process Officer	Officer	3 947 Value: $33.1K
Apr 01, 2026 Buy	Common Stock	Koyama Takeshi Chief Strategy Officer	Officer	0 Value: $0
Apr 01, 2026 Buy	Common Stock	Koyama Takeshi Chief Strategy Officer	Officer	0 Value: $0
Apr 01, 2026 Buy	Phantom Stock Units - Ordinary Employee Share Compensation	Koyama Takeshi Chief Strategy Officer	Officer	1 048 Value: $9K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT MIZUHO FINANCIAL GROUP INC

Mizuho Financial Group, Inc., together with its subsidiaries, engages in banking, trust, securities, and other businesses related to financial services in Japan, the Americas, Europe, Asia/Oceania, and internationally. It operates through five segments: Retail & Business Banking Company, Corporate & Institutional Company, Global Corporate Company, Global Markets Company, and Asset Management Company. The company provides deposit products; syndica...

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