KB Financial Group Inc.

As filed with the Securities and Exchange Commission on April 28, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM

20-F

(Mark One)

☐	REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934

☒	ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the fiscal year ended December 31, 2025

☐	TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from

☐	SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

Date of event requiring this shell company report

Commission file number

000-53445

KB Financial Group Inc.

(Exact name of Registrant as specified in its charter)

KB Financial Group Inc.

(Translation of Registrant’s name into English)

The Republic of Korea

(Jurisdiction of incorporation or organization)

26,

Gukjegeumyung-ro

8-gil

Yeongdeungpo-gu,

Seoul 07331,

Korea

(Address of principal executive offices)

Jerry Kang

18F, Kookmin Bank, 141, Uisadang-daero,

Yeongdeungpo-gu,

Seoul 07332,

Korea

Telephone No.:

+82-2-2073-2856

Facsimile No.:

+82-2

2073-2848

(Name, telephone,

e-mail

and/or facsimile number and address of company contact person)

Securities registered or to be registered pursuant to Section 12(b) of the Act.


Title of each class	Trading Symbol(s)	Name of each exchange on which registered
American Depositary Shares, each representing one share of Common Stock	KB	New York Stock Exchange
Common Stock, par value ￦5,000 per share	KB	New York Stock Exchange*

Securities registered or to be registered pursuant to Section 12(g) of the Act.

None

Securities for which there is a reporting obligation pursuant to

Section

15(d) of the Act.

None

Indicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report.

358,587,722 shares of Common Stock, par value

￦

5,000 per share

Indicate by check mark if the registrant is a

well-known

seasoned issuer, as defined in Rule 405 of the Securities Act. ☒ Yes ☐ No

If this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934. ☐ Yes ☒ No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. ☒ Yes ☐ No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation

S-T

(§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). ☒ Yes ☐ No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a

non-accelerated

filer or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer” and “emerging growth company” in Rule

12b-2

of the Exchange Act:

☒ Large accelerated filer ☐ Accelerated

filer ☐ Non-accelerated

filer ☐ Emerging growth company

If an emerging growth company that prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act: ☐

† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (§ 15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☒

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements: ☐

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §

240.10D-1(b):

☐

Indicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:


☐ U.S. GAAP		☒ International Financial Reporting Standards as issued by the International Accounting Standards Board		☐		Other


Auditor Name: Samil PricewaterhouseCoopers		Auditor Location: Seoul, Korea		Auditor Firm ID: 1103

If “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow. ☐ Item 17 ☐ Item 18

If this is an annual report, indicate by check mark whether the registrant is a shell company (as defined in Rule

12b-2

of the Exchange Act). ☐ Yes ☒ No

* Not for trading, but only in connection with the registration of the American Depositary Shares.