Company: SHG
Filing Date: 2025-09-12
Form Type: 6-K
Source: 0001263043-25-000007
Chunk: 0

Company: SHINHAN FINANCIAL GROUP CO LTD
Filing Date: 2025-09-12
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 September 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

Response to Press Report</div>

On September 12, 2025, in response to press report regarding Shinhan Financial Group, some media outlets reported that Shinhan Financial Group is currently undergoing acquisition process of Lotte Insurance. In this regard, Shinhan Financial Group hereby clarifies that such reports are not true.

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: September 12, 2025 |     | Shinhan Financial Group Co., Ltd. 
 (Registrant)                      
 By:                               |     | /s/ CHUN Sang Yung |
|:-------------------------|:----|:----------------------------------|:----|:-------------------|
|                          |     | Name: CHUN Sang Yung              |     |                    |
|                          |     | Title:   Chief Financial Officer  |     |                    |