DoubleDown Interactive Co., Ltd. — Regulatory Filings 2026

Feb 11, 2026

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 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 February, 2026

Commission File Number 001-39349

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DoubleDown Interactive Co., Ltd.

(Translation of registrant’s name into English)

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Joseph A. Sigrist, Chief Financial Officer

c/o Double Down Interactive LLC

6671 S. Las Vegas Blvd., Building D, Suite 210

Las Vegas, NV 89119

+1-702-761-6899

(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.

x Form 20-F o Form40-F

INFORMATION CONTAINED IN THIS FORM 6-K REPORT

Issuance of Press Release

On February 11, 2026, DoubleDown Interactive Co., Ltd. (the “ Company ”) issued a press release announcing its unaudited financial results for the fourth quarter and fiscal year ended December 31, 2025.

This report on Form 6-K is hereby incorporated by reference into the Company’s Registration Statement on Form F-3 (File No. 333-290402), to be a part thereof from the date on which this report is submitted, to the extent not superseded by documents or reports subsequently filed or furnished.

EXHIBIT INDEX

Exhibit No.	Description
99.1	Press release of the Company, dated February 1 1 , 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.

Date: February 11, 2026
By:	/s/ Joseph A. Sigrist
	Name: Joseph A. Sigrist
	Title: Chief Financial Officer