NYSE:MFG

Mizuho Financial Group Stock Insider Trading

Financial Services > Banks - Regional

Buy MFG

*Your capital is at risk

$10.71

+0.0200 (+0.187%)

At Close: Aug 07, 2026

Mizuho Financial Group Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -99.95. In total, the insiders bought 221.03K and sold 26.27K 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)	-99.95
● Buy	221.03K shares
● Sell	26.27K shares
87% Buy Activity Negligible or No Correlation
Sell Signal Medium Confidence Jun 01, 2026 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -99.95. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Kaminoyama Nobuhiro See Remarks	Officer	1 974 Value: $19.3K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Kaminoyama Nobuhiro See Remarks	Officer	1 629 Value: $16.0K
Jul 01, 2026 Sell	Common Stock D-Return	Kaminoyama Nobuhiro See Remarks	Officer	2 422 Value: $0.28B
Jul 01, 2026 Buy	Common Stock M-Exempt	Kaminoyama Nobuhiro See Remarks	Officer	6 054 Value: $59.3K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Yagi Minako See Remarks	Officer	1 594 Value: $15.6K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Yagi Minako See Remarks	Officer	1 475 Value: $14.5K
Jul 01, 2026 Sell	Common Stock D-Return	Yagi Minako See Remarks	Officer	1 228 Value: $72.6M
Jul 01, 2026 Buy	Common Stock M-Exempt	Yagi Minako See Remarks	Officer	3 069 Value: $30.1K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Matsuura Shuji See Remarks	Officer	1 265 Value: $12.4K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Matsuura Shuji See Remarks	Officer	1 415 Value: $13.9K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Matsuura Shuji See Remarks	Officer	1 315 Value: $12.9K
Jul 01, 2026 Sell	Common Stock D-Return	Matsuura Shuji See Remarks	Officer	1 598 Value: $0.12B
Jul 01, 2026 Buy	Common Stock M-Exempt	Matsuura Shuji See Remarks	Officer	3 995 Value: $39.2K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Kihara Masahiro See Remarks	Officer	7 279 Value: $71.3K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Kihara Masahiro See Remarks	Officer	7 267 Value: $71.2K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Kihara Masahiro See Remarks	Officer	5 928 Value: $58.1K
Jul 01, 2026 Sell	Common Stock D-Return	Kihara Masahiro See Remarks	Officer	8 190 Value: $3.23B
Jul 01, 2026 Buy	Common Stock M-Exempt	Kihara Masahiro See Remarks	Officer	20 474 Value: $200.6K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Sugawara Masayuki See Remarks	Officer	1 943 Value: $19.0K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Sugawara Masayuki See Remarks	Officer	1 788 Value: $17.5K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Sugawara Masayuki See Remarks	Officer	1 550 Value: $15.2K
Jul 01, 2026 Sell	Common Stock D-Return	Sugawara Masayuki See Remarks	Officer	2 114 Value: $0.22B
Jul 01, 2026 Buy	Common Stock M-Exempt	Sugawara Masayuki See Remarks	Officer	5 281 Value: $51.8K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Hihara Shinichiro See Remarks	Officer	1 280 Value: $12.5K
Jul 01, 2026 Buy	Phantom Stock Units M-Exempt	Hihara Shinichiro See Remarks	Officer	1 315 Value: $12.9K

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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