Form 6-K

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 February 2026

Commission File Number: 000-53445

KB Financial Group Inc.

(Translation of registrant’s name into English)

26, Gukjegeumyung-ro 8-gil, Yeongdeungpo-gu, Seoul 07331, Korea

(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 ☐

Resolution for the Acquisition of Treasury Shares

On February 5, 2026, the board of directors of KB Financial Group Inc. (“KB Financial Group”) resolved to acquire treasury shares within the profits available for dividends. The details are as follows:



Type and Number of Shares to be Acquired	Common Shares	4,222,378 shares
Type and Number of Shares to be Acquired	Other Shares	—
Estimated Amount of Shares to be Acquired		KRW 600,000,000,000
Scheduled Acquisition Period	From	February 6, 2026
Scheduled Acquisition Period	To	April 20, 2026
Purpose of Acquisition		To enhance shareholder return and increase corporate value through the acquisition and cancellation of treasury shares
Method of Acquisition		Purchase on the stock exchange (KRX)
Entrusted Brokerage Company		KB Securities Co., Ltd.
Number of Treasury Shares owned as of February 5, 2026		14,262,733 shares (3.83%)
Date of Resolution by the Board of Directors		February 5, 2026 ● Number of non-executive directors in attendance: 7 (out of 7)
Buying Order Limit per Day		422,237 common shares



Other Material Information for an Investment Decision		- The “Estimated Amount of Shares to be Acquired” above is the acquisition amount determined through a resolution of the board of directors. - The “Type and Number of Shares to be Acquired” above is calculated based on the closing price of common shares of KB Financial Group as of the day prior to the date of the resolution of the board of directors, which was KRW 142,100. The actual number and amount of shares to be acquired are subject to change depending on fluctuations in share price. - The “Buying Order Limit per Day” above is calculated as below pursuant to Article 5-5 of the Regulation on Securities Issuance and Disclosures: The lower of [the higher of ① and ②] and ③ ① 10 % of the number of treasury shares to be acquired reported by this announcement: 422,237 shares. ② 25% of the daily average trading volume for the last one-month period up to one day prior to the resolution of the board of directors: 248,995 shares. ③ 1% of the total number of shares issued and outstanding: 3,728,504 common shares.

Limitation on the acquisition amount of treasury shares as of February 5, 2026:

(Unit: in millions of Won)




Items		Amount

1. Upper limit of profits available for dividends as of the end of the previous fiscal year in accordance with the Korean Commercial Code		3,728,302

2. Amount of treasury shares acquired since the end of the previous fiscal year		-

3. Dividends and related earnings surplus reserves resolved at the annual general shareholders’ meeting held after the end of the previous fiscal year		575,533

4. Quarterly/interim dividends and related earnings surplus reserves resolved at the meeting of the board of directors after the end of the previous fiscal year		-

5. Contract amount for the trust agreement		-




6. Acquisition cost of the treasury shares if disposed after the end of the previous fiscal year (based on the moving average method applied to the acquisition cost)			-

Limitation on the acquisition amount of treasury shares (1-2-3-4-5+6)			3,152,769

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.


				KB Financial Group Inc.
				(Registrant)

Date: February 5, 2026				By: /s/ Sang Rok Na
				(Signature)

				Name: Sang Rok Na
				Title: Senior Managing Director and Chief Financial Officer