Company: SHG
Filing Date: 2025-12-10
Form Type: 6-K
Source: 0001193125-25-313438
Chunk: 0

Company: SHINHAN FINANCIAL GROUP CO LTD
Filing Date: 2025-12-10
Form: 6-K
Chunk 0
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<div align='center'>UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

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FORM 6-K

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REPORT OF FOREIGN PRIVATE ISSUER

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

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the Month of December 2025

Commission File Number: 001-31798

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SHINHAN FINANCIAL GROUP CO., LTD.

(Translation of registrant's name into English)

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20, Sejong-daero 9-gil, Jung-gu, Seoul 04513, Korea
(Address of principal executive offices)

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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

Record Date for the Annual General Meeting of Shareholders</div>

According to the Articles of Incorporation of Shinhan Financial Group (NYSE symbol: SHG), the shareholders registered in the shareholders’ registry as of December 31 of each fiscal year shall be entitled to exercise the rights as shareholders at the Ordinary General Meeting of Shareholders convened for such fiscal year. Accordingly, our common shareholders that are registered in Shinhan Financial Group’s shareholder registry as of December 31, 2025 and the holders of our American Depositary Receipts (“ADRs”) as of the same date (if December 31 is a holiday, the last business day of fiscal year 2025 would be the record date) will be entitled to exercise their voting rights at the Annual General Meeting of Shareholders for the fiscal year 2025.

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: December 10, 2025 |     | Shinhan Financial Group Co., Ltd. 
 (Registrant)                      
 By:                               |     | /s/ CHUN Sang Yung |
|:------------------------|:----|:----------------------------------|:----|:-------------------|
|                         |     | Name: CHUN Sang Yung              |     |                    |
|                         |     | Title:   Chief Financial Officer  |     |                    |