# EDGAR Filing Document

**Accession Number:** 0001913847
**File Stem:** 0001213900-26-067094
**Filing Date:** 2026-6
**Character Count:** 10595
**Document Hash:** 90761bec5a201cbabb7336ba055ff838
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001213900-26-067094.hdr.sgml**: 20260610

**ACCESSION NUMBER**: 0001213900-26-067094

**CONFORMED SUBMISSION TYPE**: 6-K

**PUBLIC DOCUMENT COUNT**: 2

**CONFORMED PERIOD OF REPORT**: 20260610

**FILED AS OF DATE**: 20260610

**DATE AS OF CHANGE**: 20260610

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Coincheck Group N.V.
- **CENTRAL INDEX KEY:** 0001913847
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 000000000
- **STATE OF INCORPORATION:** P7
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 6-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42438
- **FILM NUMBER:** 261078341

**BUSINESS ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** NIEUWEZIJDS VOORBURGWAL 162
- **CITY:** 1012 SJ AMSTERDAM
- **PROVINCE COUNTRY:** P7
- **BUSINESS PHONE:** 31-20-522-2555

**MAIL ADDRESS:**
- **ADDRESS IS A NON US LOCATION:** YES
- **STREET 1:** NIEUWEZIJDS VOORBURGWAL 162
- **CITY:** 1012 SJ AMSTERDAM
- **PROVINCE COUNTRY:** P7

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Coincheck Group B.V.
- **DATE OF NAME CHANGE:** 20220228

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**WASHINGTON, DC 20549**

**FORM 6-K**

**REPORT OF FOREIGN PRIVATE ISSUER**

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

**THE SECURITIES EXCHANGE ACT OF 1934**

Date of Report (Date of earliest event reported): June 9, 2026

**Commission File Number: 001-42438**

**COINCHECK GROUP N.V.** 

(Translation of registrant's name into English)

**Nieuwezijds Voorburgwal 162**

**1012 SJ Amsterdam**

**The Netherlands**

(Address of principal executive offices)

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 ☐

Coincheck Group N.V. ("Coincheck Group") is providing the below updates:

&nbsp;&nbsp;&nbsp;&nbsp;1. On
 June 10, 2026, Coincheck Group issued a press release announcing the completion of KDDI
 Corporation's strategic investment in Coincheck Group on June 9, 2026 pursuant to the previously-disclosed
 Share Subscription and Investor Rights Agreement entered into on May 12, 2026. The press
 release is furnished as Exhibit 99.1 to this report.

&nbsp;&nbsp;&nbsp;&nbsp;2. The
 contents hereof will be posted to Coincheck Group's website (https://www.coincheckgroup.com/).
 Coincheck Group uses its website to distribute company information, and makes available free
 of charge a variety of information for investors, including its filings with the Securities
 and Exchange Commission ("SEC"), as soon as reasonably practicable after electronically
 filing that material with, or furnishing it to, the SEC. The information that Coincheck Group
 posts on its website may be deemed material; however, by filing this report, and furnishing
 the information on its website, Coincheck Group makes no admission as to the materiality
 of any such information. Investors should monitor Coincheck Group's website, in addition
 to following its press releases, filings with the SEC, and public conference calls and webcasts.
 In addition, investors may opt in to automatically receive email alerts and other information
 about Coincheck Group when enrolling their email address by visiting the "Email Alerts"
 section of the Coincheck Group website. Coincheck Group does not incorporate the information
 contained on, or accessible through, Coincheck Group's website or related social media
 channels into this report.

The information under item 1 (including Exhibit 99.1) in this report is incorporated by reference into Coincheck Group's Registration Statements on [Form S-8](https://www.sec.gov/Archives/edgar/data/1913847/000101376225003464/ea0235357-s8_coincheck.htm) (File No. 333-286190) and [Form F-3](https://www.sec.gov/Archives/edgar/data/1913847/000162828026000176/coincheckf-3universalshelf.htm) (File No. 333-292562) and shall be a part thereof from the date on which such information is furnished, to the extent not superseded by documents or reports subsequently filed or furnished.

**EXHIBIT INDEX**

---

| | |
|:---|:---|
| **Exhibit Number** | **Exhibit Description** |
| 99.1 | [Press release issued by Coincheck Group N.V., dated June 10, 2026.](ea029406201ex99-1.htm) |

---

**SIGNATURE**

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: June 10, 2026 | **COINCHECK GROUP N.V.** | **COINCHECK GROUP N.V.** | **COINCHECK GROUP N.V.** |
|  | By: | /s/ Jason Sandberg | /s/ Jason Sandberg |
|  |  | Name: | Jason Sandberg |
|  |  | Title: | Chief Financial Officer |

---

## Exhibit 99.1

**Exhibit 99.1**

**COINCHECK GROUP ANNOUNCES COMPLETION OF KDDI STRATEGIC INVESTMENT** 

**KDDI receives newly issued shares of Coincheck Group at $2.28 per share, an aggregate cash purchase price of $65 million, constituting 14.9% ownership of Coincheck Group's outstanding ordinary shares**

**Amsterdam, Netherlands – June 10, 2026 --** Coincheck Group N.V. (NASDAQ: CNCK) ("Coincheck Group" or the "Company"), a Dutch public limited liability company that provides digital asset trade execution, custody, staking and asset management services, and KDDI Corporation (TYO: 9433) ("KDDI") today announced they have completed KDDI's strategic investment in Coincheck Group, having closed their May 12, 2026 share subscription and investment agreement (the "Subscription Agreement"). KDDI is a major Japanese telecommunications company that provides telecommunications services, finance, energy, IoT services for connected cars, and data center connectivity.

KDDI received 28,536,516 newly issued Coincheck Group ordinary shares at a price of $2.28 per share, for an aggregate cash purchase price of $65,063,256.48. KDDI will receive registration rights for the acquired shares and has the right to nominate one individual for appointment to the Company's board, as a non-executive director, at Coincheck Group's next Annual General Meeting, which is anticipated to be held in September 2026.

Concurrently with the signing of the Subscription Agreement, Coincheck Group's Japanese subsidiary, Coincheck, Inc., entered into a business alliance agreement with KDDI focused on collaborative initiatives aimed at expanding the digital asset market in Japan, including through mutual customer referral programs and related revenue sharing and referral fees. By combining KDDI's distribution reach and trusted consumer interfaces with Coincheck's crypto asset platform and product expertise, the parties aim to reduce onboarding friction, broaden mainstream access to digital assets, and expand practical day-to-day use cases across KDDI's ecosystem in Japan.

Coincheck Group was advised by J.P. Morgan, as financial advisor, and De Brauw Blackstone Westbroek and Simpson Thacher & Bartlett LLP, as legal counsel.

**<u>About Coincheck Group N.V.</u>**

Coincheck Group N.V. (NASDAQ: CNCK) seeks to bring together retail scale, institutional capability and resilient infrastructure in one digital finance platform offering. Built on its leadership position in Japan as a retail crypto asset exchange provider, the Company is expanding into institutional services and digital asset infrastructure across multiple markets. Its offerings include trade execution, custody, staking and asset management services alongside ongoing development in on-chain finance.

**<u>About KDDI Corporation</u>**

KDDI is a leading Japanese telecommunications company with over 100 million customers. In recent years, KDDI has expanded beyond its core telecommunications business into areas such as AI, finance, energy, retail, and cybersecurity, contributing to structural reforms across various industries. Globally, KDDI provides mobile services, IoT services for connected cars, and data center connectivity, primarily in North America, Europe, and Asia. KDDI is driving social impact and transformation through its mid-term management strategy, "Power-to-Connect 2028." For more information, visit the KDDI website.

https://www.kddi.com/english/

**<u>Media and Investor Relations Contact:</u>**

CoincheckIR@icrinc.com

**<u>Forward Looking Statements</u>**

This press release contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements about plans, goals, objectives, expectations and intentions with respect to future operations, products and services, and commercial relationships; and specific statements identified in this press release by words such as "aim," "aimed" and "seek," or words of similar meaning or the negative thereof. Such forward-looking statements are based upon the current beliefs and expectations of the Company's management and are inherently subject to significant business, economic and competitive uncertainties and contingencies, many of which are difficult to predict and generally beyond the Company's control, which could cause actual results or events to differ materially from those presently anticipated. Such risks, uncertainties, and assumptions, include, among others: (i) the issuance of a significant number of Coincheck Group shares to KDDI resulting in immediate and substantial dilution to existing shareholders of Coincheck Group; (ii) Coincheck Group's use of the funds it will receive from the issuance of shares to KDDI having disappointing or unsuccessful results; (iii) the business alliance with KDDI having less positive results than expected or otherwise being unsuccessful; (iv) the Company's ability to execute its growth strategies, including identifying and executing B2B or B2B2C relationships (such as the business alliance with KDDI), and (v) other risks and uncertainties discussed in the Company's filings with the U.S. Securities and Exchange Commission (the "SEC"), including its Annual Report on Form 20-F for the fiscal year ended March 31, 2025, as such factors may be updated from time to time, which are or will be accessible on the SEC's website at www.sec.gov. The forward-looking statements included in this press release are made only as of the date of this press release and the Company undertakes no obligation to publicly update or review any forward-looking statement, whether as a result of new information, future developments, or otherwise, except as required by law.