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~~

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of ~~June~~July 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 ☐

~~Sustainability~~2026 ~~Report~~First ofHalf KBEarnings ~~Financial~~Conference ~~Group Inc. for 2025~~

~~On June 30, 2026,~~ KB Financial Group Inc. ~~(“KB~~will ~~Financial~~hold ~~Group”) published~~ its ~~sustainability~~2026 ~~report~~First ~~for~~Half ~~2025~~Earnings ~~(the~~Conference ~~“Report”)~~on Thursday, ~~prepared~~ ~~in accordance with the Sustainability Disclosure Standard No.~~July 123, ~~(‘General Requirements for Disclosure of Sustainability-related Financial Information’) and Standard No~~2026. 2 ~~(‘Climate-related~~A ~~Disclosures’), issued~~live bywebcast ~~the Korea Sustainability Standards Board (“KSSB”)~~ of the ~~Korea~~conference ~~Accounting~~and ~~Institute. The financial performance included in~~ the presentation ~~Report~~materials ~~has~~will ~~been~~be ~~prepared~~available ~~on a consolidated basis~~ in ~~accordance~~both ~~with~~ Korean ~~International~~and ~~Financial Reporting~~English ~~Standards.~~on ~~In preparing~~ its ~~sustainability-related~~IR ~~financial~~website ~~disclosures,~~at KBwww.kbfg.com. ~~Financial~~Investors ~~Group~~may ~~applied the KSSB Sustainability Disclosure Standards to identify applicable disclosure requirements for sustainability~~dial-~~related~~in ~~risks and opportunities that could reasonably be expected~~ to ~~affect~~participate ~~its~~in ~~prospects, while also referencing~~ the ~~disclosure~~conference ~~topics~~call ~~outlined~~during in the ~~standards~~Q&A ofsession following the ~~Sustainability Accounting Standards Board~~presentation.

The Report identifies sustainability-related risks and opportunities by applying the Sustainability Disclosure Standards No. 1 and No. 2 of the KSSB. It discloses financially material information in a consistent and comparable format, structured around the following four core pillars: ‘Governance’, ‘Strategy’, ‘Risk Management’ and ‘Metrics and Targets.’


• Date:		Thursday, July 23, 2026

• Time:		16:00 (Korea time)

• Format:		Live webcast and conference call

• Language:		Korean and English. Simultaneous interpretation will be available for English-speaking participants.

• Agenda:		2026 First Half Earnings Results and Q&A

• Q&A via telephone

• From overseas:		82-31-810-3128

• From Korea:		031-810-3128

• Passcode:		6412#

• Q&A code:		*1

In particular, the Report provides detailed qualitative and quantitative information regarding how the risks and opportunities associated with the five topics identified through a financial materiality assessment (‘Risk Management’, ‘Climate Action’, ‘Financial Consumer Protection’, ‘Information Security’ and ‘Digital Innovation & Technology’) impact the Group’s financial position, financial performance and cash flows over the short, medium and long term.

To ensure the objectivity and credibility of the disclosed information, KB Financial Group has obtained third-party assurance from an independent professional verification agency. This process involved not only a review of the accuracy of the narrative disclosures in accordance with the KSSB Sustainability Disclosure Standards, but also verification of KB Financial Group’s greenhouse gas emissions data (Scopes 1, 2 and 3), which may carry a high financial impact. The original copy of the independent assurance statement is available in the Appendix of the Report.

For more detailed information, please refer to the Report, which is currently available in Korean on KB Financial Group’s website at www.kbfg.com. The English version of the Report is scheduled to be posted on or about July 15, 2026.

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: June 30, 2026	By:	/s/ Sang Rok Na
Date: July 9, 2026	By:	/s/ Sang Rok Na
	(Signature)
	Name: Sang Rok Na
	Title: Senior Managing Director and Chief Financial Officer

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