Mizuho Financial Group (NYSE: MFG) updates 2025–26 share repurchase plan

Rhea-AI Filing Summary

Mizuho Financial Group, Inc. reported progress on its ongoing share repurchase program. During the period from February 1 to February 28, 2026, the company repurchased 14,640,700 common shares for a total of ¥105,024,681,500 through market purchases utilizing a trust method.

Under the broader program running from November 17, 2025 to March 31, 2026, Mizuho is authorized to buy back up to 65,000,000 shares, equal to 2.6% of total shares outstanding excluding treasury stock as of December 31, 2025, for up to ¥300,000,000,000. Cumulatively so far, the company has repurchased 39,130,800 shares for ¥249,063,999,400.

Insights

Equity Capital Markets Analyst

Mizuho continues a sizable, but pre-planned, share buyback.

Mizuho Financial Group is executing a previously authorized repurchase of up to 65 million shares, or 2.6% of its share base (excluding treasury stock), with a cash ceiling of ¥300,000,000,000. Purchases are being made in the market via a trust structure.

As of the latest update, cumulative repurchases total 39,130,800 shares for ¥249,063,999,400, leaving some remaining capacity in both shares and yen until March 31, 2026. The actual impact on per-share metrics and capital ratios will depend on the company’s overall earnings and regulatory capital position, which are not detailed here.

Subsequent disclosures covering periods after March 31, 2026 may show whether the full authorization was used and how the final repurchase amounts interact with capital management plans and shareholder return policies.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of March 2026

Commission File Number 001-33098

Mizuho Financial Group, Inc.

(Translation of registrant’s name into English)

5-5, Otemachi 1-chome

Chiyoda-ku, Tokyo 100-8176

Japan

(Address of principal executive office)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F. Form 20-F ☒ Form 40-F ☐

THIS REPORT ON FORM 6-K SHALL BE DEEMED TO BE INCORPORATED BY REFERENCE INTO THE PROSPECTUS FORMING A PART OF MIZUHO FINANCIAL GROUP, INC.’S REGISTRATION STATEMENT ON FORM F-3 (FILE NO. 333-282497) AND TO BE A PART OF SUCH PROSPECTUS FROM THE DATE ON WHICH THIS REPORT IS FURNISHED, TO THE EXTENT NOT SUPERSEDED BY DOCUMENTS OR REPORTS SUBSEQUENTLY FILED OR FURNISHED.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

				Date: March 2, 2026 Mizuho Financial Group, Inc.
				By:		/s/ Takefumi Yonezawa
				Name:		Takefumi Yonezawa
				Title:		Senior Managing Corporate Executive / Group CFO

March 2, 2026

		Company Name:		Mizuho Financial Group, Inc.
		Representative:		Masahiro Kihara, President and Group CEO
		Head Office:		1-5-5 Otemachi, Chiyoda-ku, Tokyo
		Code Number:		8411 (Prime Market of Tokyo Stock Exchange)

Notice regarding Progress of Repurchase of Our Common Stock

(Repurchase of our common stock pursuant to the provisions of Article 156, Paragraph 1 of the Companies Act, in accordance with the provisions of Article 459, Paragraph 1 of the Companies Act and the Articles of Incorporation of Mizuho Financial Group, Inc.)

Mizuho Financial Group, Inc. (“MHFG”) hereby announces the progress of the repurchase of its common stock pursuant to the provisions of Article 156, Paragraph 1 of the Companies Act of Japan (“Companies Act”) and in accordance with the provisions of Article 459, Paragraph 1 of the Companies Act and Article 47 of its Articles of Incorporation.

(1) Stock repurchased		MHFG common stock
(2) Aggregate shares repurchased		14,640,700 shares
(3) Aggregate repurchase price		¥105,024,681,500
(4) Repurchase period		February 1, 2026 to February 28, 2026 (trade date basis)
(5) Repurchase method		Market purchase utilizing trust method

(Reference)

1. Outline of the resolution of the meeting of the Board of Directors regarding the repurchase of common stock (November 14, 2025 and February 2, 2026)

(1) Stock to be repurchased		MHFG common stock
(2) Aggregate shares to be repurchased		Up to a maximum of 65,000,000 shares
		(2.6% of total shares outstanding excluding treasury stock as of December 31, 2025)
(3) Aggregate amount of repurchase price		Up to a maximum of ¥300,000,000,000
(4) Repurchase period		From November 17, 2025 to March 31, 2026
(5) Repurchase method		Market purchase utilizing trust method

2. Aggregate number of shares and amount repurchased pursuant to the above resolution as of February 28, 2026

Aggregate number of shares repurchased		39,130,800 shares
Aggregate amount repurchased:		¥249,063,999,400

End of document

This immediate release contains statements that constitute forward-looking statements within the meaning of the United States Private Securities Litigation Reform Act of 1995, including estimates, forecasts, targets and plans. Such forward-looking statements do not represent any guarantee by management of future performance. Factors that could affect our financial condition and results of operations are included in “Item 3.D. Key Information—Risk Factors” and “Item 5. Operating and Financial Review and Prospects” in our most recent Form 20-F filed with the U.S. Securities and Exchange Commission (“SEC”), which is available in the Financial Information section of our web page at www.mizuhogroup.com and also at the SEC’s web site at www.sec.gov. We are under no obligation, and disclaim any obligation, to update or alter our forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by the rules of the Tokyo Stock Exchange.

FAQ

What share buyback progress did Mizuho Financial Group (MFG) report for February 2026?

Mizuho Financial Group repurchased 14,640,700 common shares in February 2026 for a total of ¥105,024,681,500. These purchases were made from February 1 to February 28, 2026 via market transactions using a trust method under its ongoing buyback program.

What is the total amount repurchased so far under Mizuho Financial Group (MFG)’s current program?

Under the ongoing program, Mizuho Financial Group has cumulatively repurchased 39,130,800 shares for ¥249,063,999,400. This total includes the February 2026 activity and reflects progress toward the maximum authorization set for the entire repurchase period.

What are the maximum size and value of Mizuho Financial Group (MFG)’s current share repurchase authorization?

The current authorization permits repurchasing up to 65,000,000 common shares, equal to 2.6% of total shares outstanding excluding treasury stock as of December 31, 2025. The aggregate repurchase price may reach up to ¥300,000,000,000 over the program’s duration.

Over what period is Mizuho Financial Group (MFG)’s share buyback program scheduled to run?

The share repurchase program runs from November 17, 2025 to March 31, 2026. Within this window, Mizuho may conduct market purchases of its common stock using a trust method, up to the stated share and yen limits.

How is Mizuho Financial Group (MFG) executing its common stock repurchases?

Mizuho Financial Group is conducting its common stock buybacks through market purchases utilizing a trust method. This structure allows shares to be acquired on the market within the approved period and limits defined by its board and corporate authorizations.

What percentage of Mizuho Financial Group (MFG)’s shares could be repurchased under the current program?

The authorization covers up to 2.6% of total shares outstanding excluding treasury stock as of December 31, 2025. This percentage corresponds to a ceiling of 65,000,000 shares that may be bought back if the program is fully utilized.