MFG
insider transactionsMIZUHO FINANCIAL GROUP INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·M
Makoto Samejima KEY
Group Chief Financial Officer
$0
1.7K sh
Own New
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Other·D
Makoto Samejima KEY
Group Chief Financial Officer
$21.0M
682 sh · $30,768.37
Own -14%
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Exercise·M
Makoto Samejima KEY
Group Chief Financial Officer
$0
1.7K sh
Own +53%
-
Exercise·M
Group Chief Governance Officer
$0
719 sh
Own New
-
Other·D
Group Chief Governance Officer
$3.7M
288 sh · $12,993.09
Own -6%
-
Exercise·M
Group Chief Governance Officer
$0
719 sh
Own +18%
-
Exercise·M
Group Chief Strategy Officer
$0
1.0K sh
Own New
-
Other·D
Group Chief Strategy Officer
$8.0M
420 sh · $18,948.26
Own -4%
-
Exercise·M
Group Chief Strategy Officer
$0
1.0K sh
Own +12%
-
Exercise·M
Group Chief Human Resources O…
$0
659 sh
Own New
-
Other·D
Group Chief Human Resources O…
$3.1M
264 sh · $11,910.34
Own -40%
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Exercise·M
Group Chief Human Resources O…
$0
659 sh
Own New
-
Exercise·M
Group Chief Compliance Officer
$0
778 sh
Own New
-
Other·D
Group Chief Compliance Officer
$4.4M
312 sh · $14,075.85
Own -40%
-
Exercise·M
Group Chief Compliance Officer
$0
778 sh
Own New
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 1, 2026 | Makoto Samejima KEY | Exercise M | 1.7K | $0 |
| Jun 1, 2026 | Makoto Samejima KEY | Other D | 682 | $21.0M |
| Jun 1, 2026 | Makoto Samejima KEY | Exercise M | 1.7K | $0 |
| Jun 1, 2026 | Tatsuya Kurosawa | Exercise M | 719 | $0 |
| Jun 1, 2026 | Tatsuya Kurosawa | Other D | 288 | $3.7M |
| Jun 1, 2026 | Tatsuya Kurosawa | Exercise M | 719 | $0 |
| Jun 1, 2026 | Takeshi Koyama | Exercise M | 1.0K | $0 |
| Jun 1, 2026 | Takeshi Koyama | Other D | 420 | $8.0M |
| Jun 1, 2026 | Takeshi Koyama | Exercise M | 1.0K | $0 |
| Jun 1, 2026 | Minori Komatsu | Exercise M | 659 | $0 |
| Jun 1, 2026 | Minori Komatsu | Other D | 264 | $3.1M |
| Jun 1, 2026 | Minori Komatsu | Exercise M | 659 | $0 |
| Jun 1, 2026 | Fusae Akamatsu | Exercise M | 778 | $0 |
| Jun 1, 2026 | Fusae Akamatsu | Other D | 312 | $4.4M |
| Jun 1, 2026 | Fusae Akamatsu | Exercise M | 778 | $0 |
About MFG insider trading
This page tracks insider transactions for MIZUHO FINANCIAL GROUP INC (MFG) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.