Seiji Imai (MFG) discloses Mizuho stock and phantom unit holdings

Rhea-AI Filing Summary

Mizuho Financial Group director Seiji Imai filed an initial ownership report detailing his equity-based interests in the company. He holds 49,688 shares of Common Stock directly and 9,463.572 shares indirectly through an ESOP. He also reports multiple grants of phantom stock units tied to Common Stock, including 44,060 units that are fully vested and settle upon retirement, plus additional grants of 7,208, 6,043, and 3,793 units that vest in three equal annual installments beginning on July 1, 2026, July 1, 2025, and July 1, 2024, respectively.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person^*

Imai Seiji

(Last) (First) (Middle)

C/O MIZUHO FINANCIAL GROUP, INC.

1-5-5 OTEMACHI, CHIYODA-KU

(Street)

TOKYO JAPAN 100-8176

(City) (State) (Zip)

JAPAN

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
MIZUHO FINANCIAL GROUP INC [ MFG ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	49,688	D
Common Stock	9,463.572	I	By ESOP

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Phantom Stock Units - Retirement	(1)	(1)	Common Stock	44,060	(2)	D
Phantom Stock Units	(3)	(3)	Common Stock	7,208	(2)	D
Phantom Stock Units	(4)	(4)	Common Stock	6,043	(2)	D
Phantom Stock Units	(5)	(5)	Common Stock	3,793	(2)	D

Explanation of Responses:

1. These phantom stock units are fully vested and settle upon the Reporting Person's retirement from the Company.

2. Each phantom stock unit represents a contingent right to receive one share of Issuer Common Stock, which will be settled in cash or common stock upon settlement at the Issuer's election.

3. These phantom stock units vest in three equal annual installments beginning on July 1, 2026.

4. Represents the unvested portion of a grant of phantom stock units which vest in three equal annual installments beginning on July 1, 2025.

5. Represents the unvested portion of a grant of phantom stock units which vest in three equal annual installments beginning on July 1, 2024.

Remarks:

Exhibit List: Exhibit 24 - Power of Attorney.

	/s/ Yuki Nishii, as Attorney-In-Fact	03/18/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)

FAQ

What does Seiji Imai report owning in Mizuho Financial Group (MFG) on this Form 3?

Seiji Imai reports direct ownership of 49,688 shares of Common Stock and indirect ownership of 9,463.572 shares through an ESOP. He also discloses several grants of phantom stock units linked to Mizuho Financial Group Common Stock.

How many phantom stock units tied to retirement does Seiji Imai hold in Mizuho Financial Group (MFG)?

He holds 44,060 phantom stock units labeled as Phantom Stock Units - Retirement. According to the disclosure, these units are fully vested and will settle upon his retirement from the company in either cash or Common Stock at the issuer’s election.

What are the vesting schedules for Seiji Imai’s phantom stock units in Mizuho Financial Group (MFG)?

One phantom stock unit grant of 7,208 units vests in three equal annual installments beginning on July 1, 2026. Additional grants of 6,043 and 3,793 units vest in three equal annual installments beginning on July 1, 2025 and July 1, 2024, respectively.

How are Seiji Imai’s phantom stock units in Mizuho Financial Group (MFG) settled?

Each phantom stock unit represents a contingent right to receive one share of Common Stock. They will be settled in either cash or Common Stock upon settlement, at Mizuho Financial Group’s election, as described in the disclosure language.

What indirect holdings does Seiji Imai report in Mizuho Financial Group (MFG)?

He reports indirect ownership of 9,463.572 shares of Common Stock, held by ESOP. This position is labeled as indirect ownership, indicating the shares are held through an employee stock ownership plan rather than directly in his own name.

Does this Mizuho Financial Group (MFG) Form 3 show any insider buying or selling by Seiji Imai?

The disclosure lists holding entries for Common Stock and phantom stock units, with no buy or sell transactions indicated. Transaction codes are unspecified, and the transaction summary shows no buy or sell counts, only recorded ownership positions.