[6-K] KB Financial Group Inc. Current Report (Foreign Issuer)

Rhea-AI Filing Summary

KB Financial Group Inc. (KB) released preliminary K-IFRS results for Q3 2025, subject to auditor review. For the group, net operating profit was 2,334,990 million won (up 9.47% quarter over quarter, down 1.29% year over year). Profit for the period was 1,655,228 million won (down 5.28% QoQ, up 3.33% YoY). Profit attributable to shareholders of the parent reached 1,686,040 million won (down 3.01% QoQ, up 4.09% YoY). On a cumulative basis, profit attributable to shareholders was 5,121,733 million won (up 16.56% YoY).

For KB Securities (based on its consolidated financials), Q3 net operating profit was 225,265 million won (up 3.31% QoQ). Profit attributable to shareholders of the parent was 159,172 million won (down 0.73% QoQ, down 7.47% YoY), with cumulative profit attributable at 500,769 million won (down 9.10% YoY). The group noted prior-period adjustments tied to K-IFRS 1117 and emphasized that figures may change after audit.

Insights

Banking earnings analyst

Stable Q3 profitability; modest YoY gains at group level.

KB Financial Group shows resilient earnings with Q3 2025 profit attributable to shareholders of 1,686,040 million won, a 4.09% YoY increase, while QoQ softened by 3.01%. Net operating profit of 2,334,990 million won rose 9.47% QoQ, indicating solid core performance.

Cumulatively, profit attributable to shareholders reached 5,121,733 million won, up 16.56% YoY, signaling stronger year-to-date performance despite mixed quarterly trends. The figures are preliminary under K-IFRS and subject to audit, which may lead to revisions.

KB Securities posted Q3 profit attributable of 159,172 million won (down 0.73% QoQ, down 7.47% YoY), while net operating profit improved QoQ. Actual impact depends on finalized audit outcomes and any effects from K-IFRS 1117 adjustments disclosed for prior periods.

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 October 2025

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 ☐

Preliminary Operating Results for the Third Quarter of 2025

On October 30, 2025, KB Financial Group Inc. (“KB Financial Group”) held an earnings conference and released its preliminary operating results for the third quarter of fiscal year 2025. The following tables reflect the key figures released during the conference. The presentation materials for the conference, which contain further details, are available at KB Financial Group’s website (http://www.kbfg.com).

The preliminary figures presented herein are based on International Financial Reporting Standards as adopted by the Republic of Korea (“K-IFRS”) and are currently being reviewed by KB Financial Group’s independent auditors and are therefore subject to change.

1. Preliminary Operating Results of KB Financial Group (Consolidated)

(Won in millions, %)				3Q 2025				2Q 2025				% Change Increase (Decrease) (Q to Q)				3Q 2024				% Change Increase (Decrease) (Y to Y)
Operating revenue		Specified Quarter			14,972,327				24,200,489				(38.13	)			15,488,693				(3.33	)
		Cumulative			58,916,784				—				—				58,746,879				0.29
Net operating profit		Specified Quarter			2,334,990				2,132,971				9.47				2,365,392				(1.29	)
		Cumulative			6,760,989				—				—				7,013,699				(3.60	)
Profit before income tax		Specified Quarter			2,261,433				2,343,141				(3.49	)			2,291,992				(1.33	)
		Cumulative			6,911,180				—				—				6,059,318				14.06
Profit for the period		Specified Quarter			1,655,228				1,747,580				(5.28	)			1,601,811				3.33
		Cumulative			5,101,930				—				—				4,368,778				16.78
Profit attributable to shareholders of the parent company		Specified Quarter			1,686,040				1,738,422				(3.01	)			1,619,718				4.09
		Cumulative			5,121,733				—				—				4,394,149				16.56

Notes: 1)		“Operating revenue” represents the sum of interest income, fee and commission income, insurance income, reinsurance income, gain on financial assets/liabilities at fair value through profit or loss, other insurance finance income and other operating income.
2)		KB Financial Group’s operating results for the third quarter of 2024 have been adjusted retroactively to reflect certain communications with the Financial Supervisory Service regarding the application of K-IFRS 1117 (Insurance Contracts).

2. Preliminary Operating Results of Kookmin Bank (Consolidated)

(Won in millions, %)				3Q 2025				2Q 2025				% Change Increase (Decrease) (Q to Q)				3Q 2024				% Change Increase (Decrease) (Y to Y)
Operating revenue		Specified Quarter			6,444,666				14,169,626				(54.52	)			7,871,312				(18.12	)
		Cumulative			31,425,703				—				—				34,096,985				(7.83	)
Net operating profit		Specified Quarter			1,573,852				1,556,425				1.12				1,590,218				(1.03	)
		Cumulative			4,519,186				—				—				4,452,149				1.51
Profit before income tax		Specified Quarter			1,578,930				1,537,223				2.71				1,565,802				0.84
		Cumulative			4,490,178				—				—				3,573,299				25.66
Profit for the period		Specified Quarter			1,175,328				1,152,065				2.02				1,072,126				9.63
		Cumulative			3,345,168				—				—				2,538,458				31.78
Profit attributable to shareholders of the parent company		Specified Quarter			1,176,943				1,161,173				1.36				1,112,032				5.84
		Cumulative			3,364,548				—				—				2,617,890				28.52

Note: “Operating revenue” represents the sum of interest income, fee and commission income, gain on financial assets/liabilities at fair value through profit or loss and other operating income.

3. Preliminary Operating Results of KB Securities Co., Ltd. (“KB Securities”) (Consolidated)

(Won in millions, %)				3Q 2025				2Q 2025				% Change Increase (Decrease) (Q to Q)				3Q 2024				% Change Increase (Decrease) (Y to Y)
Operating revenue		Specified Quarter			2,746,467				3,216,537				(14.61	)			2,341,119				17.31
		Cumulative			8,951,291				—				—				8,074,583				10.86
Net operating profit		Specified Quarter			225,265				218,043				3.31				238,775				(5.66	)
		Cumulative			667,919				—				—				735,474				(9.19	)
Profit before income tax		Specified Quarter			213,388				221,672				(3.74	)			233,598				(8.65	)
		Cumulative			673,908				—				—				710,297				(5.12	)
Profit for the period		Specified Quarter			160,067				160,658				(0.37	)			173,149				(7.56	)
		Cumulative			502,428				—				—				552,616				(9.08	)
Profit attributable to shareholders of the parent company		Specified Quarter			159,172				160,335				(0.73	)			172,031				(7.47	)
		Cumulative			500,769				—				—				550,894				(9.10	)

Notes: 1)		The above figures are based on KB Securities’ consolidated financial statements, as a result of which the figures may differ from KB Securities’ earnings results to be released at KB Financial Group’s earnings conference for the third quarter of 2025, which are based on KB Financial Group’s consolidated financial statements.
2)		“Operating revenue” represents operating income based on KB Securities’ financial statements.

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: October 30, 2025				By: /s/ Sang Rok Na
				(Signature)
				Name: Sang Rok Na
				Title: Managing Director and Chief Financial Officer

FAQ

What preliminary Q3 2025 results did KB (KB) report?

KB reported Q3 2025 net operating profit of 2,334,990 million won and profit for the period of 1,655,228 million won under K-IFRS.

What was KB (KB) profit attributable to shareholders in Q3 2025?

Profit attributable to shareholders of the parent was 1,686,040 million won (down 3.01% QoQ, up 4.09% YoY).

How did KB (KB) year-to-date profit trend in 2025?

Cumulative profit attributable to shareholders was 5,121,733 million won, a 16.56% increase year over year.

How did KB Securities perform in Q3 2025?

KB Securities’ Q3 profit attributable to shareholders was 159,172 million won (down 0.73% QoQ, down 7.47% YoY).

What accounting basis did KB (KB) use for these figures?

Results are prepared under K-IFRS and are preliminary, subject to auditor review.

Were there any noted adjustments to prior results?

Yes. The group indicated Q3 2024 results were adjusted to reflect communications on K-IFRS 1117 (Insurance Contracts).