MFG · Insider Trading
Mizuho Financial Group, Inc. American Depositary Shares (Each representing one-fifth of an Ordinary Share)
Every open-market purchase and sale reported by MFG officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.
| Filed | Insider | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-07-28 | Hiromichi Shinohara | Director | A | +490 deriv. | — |
| 2026-07-28 | Shuji Matsuura | See Remarks | A | +4,290 deriv. | — |
| 2026-07-28 | Naoshi Inomata | See Remarks | A | +5,235 deriv. | — |
| 2026-07-28 | Yumiko Noda | Director | A | +490 deriv. | — |
| 2026-07-28 | Kotaro Ohno | Director | A | +490 deriv. | — |
| 2026-07-28 | Keiji Kojima | Director | A | +490 deriv. | — |
| 2026-07-28 | Shiro Shiraishi | See Remarks | A | +4,220 deriv. | — |
| 2026-07-28 | Tatsuya Kurosawa | See Remarks | A | — | — |
| 2026-07-28 | Makoto Hitomi | Director | A | — | — |
| 2026-07-28 | Minori Komatsu | See Remarks | MIXED | +914 deriv. | — |
| 2026-07-28 | Hideki Tsujimori | See Remarks | A | — | — |
| 2026-07-28 | Hidekatsu Take | Director | A | — | — |
| 2026-07-28 | Shinichiro Hihara | See Remarks | A | — | — |
| 2026-07-28 | Takakazu Uchida | Director | A | — | — |
| 2026-07-28 | Yuki Kanzaki | Director | A | +490 deriv. | — |
| 2026-07-28 | Minako Yagi | See Remarks | A | — | — |
| 2026-07-28 | Nobuhiro Kaminoyama | See Remarks | A | — | — |
| 2026-07-28 | Masahiko Tezuka | Director | A | — | — |
| 2026-07-28 | Makoto Samejima | See Remarks | MIXED | +1,508 deriv. | — |
| 2026-07-28 | Masahiro Kihara | See Remarks | A | +17,071 deriv. | — |
| 2026-07-28 | Natsumi Akita | See Remarks | A | — | — |
| 2026-07-28 | Takashi Tsukioka | Director | A | — | — |
| 2026-07-28 | Takefumi Yonezawa | See Remarks | A | — | — |
| 2026-07-28 | Masayuki Sugawara | See Remarks | A | — | — |
| 2026-07-28 | Takeshi Koyama | See Remarks | MIXED | +1,381 deriv. | — |
| 2026-07-28 | Fusae Akamatsu | See Remarks | MIXED | +880 deriv. | — |
| 2026-07-06 | Naoshi Inomata | See Remarks | MIXED | +3,756 | −$302.21M |
| 2026-07-06 | Masahiro Kihara | See Remarks | MIXED | +12,284 | −$3.23B |
| 2026-07-06 | Masayuki Sugawara | See Remarks | MIXED | +3,167 | −$215.23M |
| 2026-07-06 | Takefumi Yonezawa | See Remarks | MIXED | +1,841 | −$72.62M |
| 2026-07-06 | Hideki Tsujimori | See Remarks | MIXED | +789 | −$13.32M |
| 2026-07-06 | Shuji Matsuura | See Remarks | MIXED | +2,397 | −$122.98M |
| 2026-07-06 | Makoto Hitomi | Director | MIXED | +667 | −$9.54M |
| 2026-07-06 | Minako Yagi | See Remarks | MIXED | +1,841 | −$72.62M |
| 2026-07-06 | Shinichiro Hihara | See Remarks | MIXED | +1,557 | −$51.89M |
| 2026-07-06 | Natsumi Akita | See Remarks | MIXED | +2,707 | −$156.91M |
| 2026-07-06 | Shiro Shiraishi | See Remarks | MIXED | +789 | −$13.32M |
| 2026-07-06 | Nobuhiro Kaminoyama | See Remarks | MIXED | +3,632 | −$282.51M |
| 2026-07-06 | Hidekatsu Take | Director | MIXED | +3,962 | −$336.17M |
| 2026-06-03 | Takeshi Koyama | Group Chief Strategy Officer | MIXED | +628 | −$7.96M |
| 2026-06-03 | Makoto Samejima | Group Chief Financial Officer | MIXED | +1,021 | −$20.98M |
| 2026-06-03 | Fusae Akamatsu | Group Chief Compliance Officer | MIXED | +466 | −$4.39M |
| 2026-06-03 | Tatsuya Kurosawa | Group Chief Governance Officer | MIXED | +431 | −$3.74M |
| 2026-06-03 | Minori Komatsu | See Remarks | MIXED | +395 | −$3.14M |
| Insider | Role | Shares Held | Value |
|---|---|---|---|
| Masahiro Kihara | See Remarks | 44,233 | $434.37K |
| Hidekatsu Take | Director | 35,910 | $352.64K |
| Masayuki Sugawara | See Remarks | 35,506 | $348.67K |
| Naoshi Inomata | See Remarks | 23,034 | $226.19K |
| Nobuhiro Kaminoyama | See Remarks | 22,389 | $219.87K |
| Shuji Matsuura | See Remarks | 16,196 | $159.04K |
| Natsumi Akita | See Remarks | 12,522 | $122.97K |
| Takeshi Koyama | See Remarks | 10,032 | $98.51K |
| Shiro Shiraishi | See Remarks | 8,866 | $87.06K |
| Shinichiro Hihara | See Remarks | 7,826 | $76.85K |
| Minako Yagi | See Remarks | 6,461 | $63.45K |
| Takefumi Yonezawa | See Remarks | 6,064 | $59.55K |
| Makoto Hitomi | Director | 5,156 | $50.64K |
| Tatsuya Kurosawa | See Remarks | 4,783 | $46.98K |
| Hideki Tsujimori | See Remarks | 4,224 | $41.49K |
| Makoto Samejima | See Remarks | 4,211 | $41.35K |
| Takashi Tsukioka | Director | 2,613 | $25.67K |
| Takakazu Uchida | Director | 1,640 | $16.11K |
| Masahiko Tezuka | Director | 984 | $9.67K |
| Fusae Akamatsu | See Remarks | 466 | $4.58K |
| Minori Komatsu | See Remarks | 395 | $3.88K |
Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.
Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.
Full filing history and per-insider positions are on the MFG quote page; the site-wide leaderboard is on the insider transactions hub.
Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.