Coincheck Group N.V.

1. Reporting Entity

Coincheck Group N.V. (“Coincheck Parent”) is a Dutch public limited liability company (naamloze vennootschap), with its registered office at Nieuwezijds Voorburgwal 162, the Netherlands. The condensed consolidated interim financial statements consist of Coincheck Parent and its subsidiaries (together referred to as the “Company”).

The Company has primarily engaged in providing end-to-end crypto asset exchange services through Coincheck Inc., a Japanese joint stock company (kabushiki kaisha) (“Coincheck”), by offering its customers multi-cryptocurrency marketplace and exchange platforms (the “Marketplace platform” and the “Exchange platform,” respectively) with a deep pool of liquidity for trading crypto assets through its user-friendly applications. The Company also provides digital asset management services through 3iQ, acquired on February 28, 2026, and digital asset prime brokerage services through Aplo SAS (“Aplo”), acquired on October 14, 2025.

Coincheck Parent was originally formed by Monex Group, Inc. (“Monex”) and became publicly traded on Nasdaq on December 11, 2024 as a result of the business combination among Thunder Bridge Capital Partners IV, Inc., a Delaware corporation (“Thunder Bridge”), Coincheck Parent, M1 Co G.K. (“M1 GK”), a Japanese limited liability company (godo kaisha) and a wholly owned subsidiary of Coincheck Parent, Coincheck Merger Sub, Inc. (“Merger Sub”), a Delaware corporation and a wholly-owned subsidiary of Coincheck Parent, and Coincheck (the “Business Combination”) pursuant to the Business Combination Agreement, dated as of March 22, 2022, as amended from time to time, by and among such parties (the “Business Combination Agreement”) in the following steps:

•On December 10, 2024, Coincheck and Coincheck Parent caused M1 GK to implement a share exchange (kabushiki koukan) under and in accordance with the applicable provisions of the Companies Act of Japan, pursuant to which the Ordinary Shares of Coincheck were exchanged for Ordinary Shares of Coincheck Parent (“Ordinary Shares”) (the “Share Exchange”).

•The effect of the Share Exchange was that, amongst others, Coincheck shareholders became holders of the Ordinary Shares, and Coincheck became a direct, wholly owned subsidiary of M1 GK and an indirect wholly-owned subsidiary of Coincheck Parent.

•Following the Share Exchange, Merger Sub was merged with and into Thunder Bridge (the “Merger”), following which the separate corporate existence of Merger Sub ceased and Thunder Bridge continued as the surviving corporation and became a wholly-owned subsidiary of Coincheck Parent (subsequently renamed CCG Administrative Services, Inc. (“CCG AS”) on January 31, 2025).

•As a result of the Merger: (a) each Thunder Bridge common share issued and outstanding immediately prior to the Merger was exchanged for the right to receive one Ordinary Share; and (b) each Thunder Bridge warrant that was outstanding immediately prior to the Merger (a “Thunder Bridge Warrant”) was automatically and irrevocably modified, pursuant to and in accordance with the Warrant Agreement, dated June 29, 2021, by and among Thunder Bridge and Continental Stock Transfer & Trust Company, as amended by the Warrant Assumption and Amendment Agreement, dated as of December 10, 2024, by and among Thunder Bridge, Coincheck Parent and Continental Stock Transfer & Trust Company (the “Warrant Agreement”), to provide that, in lieu of the amount of Thunder Bridge common shares that a holder of a Thunder Bridge Warrant would have been entitled to acquire if the Thunder Bridge Warrant was exercised prior to the Merger, the holder thereof was now entitled to acquire the same amount of Ordinary Shares.

As a result of the Business Combination, Thunder Bridge, M1 GK and Coincheck became wholly-owned subsidiaries of Coincheck Parent (in June 2025, M1 GK was merged into Coincheck, resulting in Coincheck becoming a direct wholly owned subsidiary of Coincheck Parent). On December 11, 2024, Ordinary Shares and public warrants of Coincheck Parent commenced trading on the Nasdaq Stock Market (“Nasdaq”) under the symbols “CNCK” and “CNCKW,” respectively.

The transaction has been accounted for with Thunder Bridge being identified as the “acquired” entity for financial reporting purposes, accordingly, as the equivalent of Coincheck issuing shares for the net assets of Thunder Bridge, accompanied by a recapitalization. Therefore, these condensed consolidated interim financial statements have been presented as a continuation of Coincheck.

On June 9, 2026, KDDI Corporation made a strategic investment in the Company and became, upon completion of the transaction, the owner of approximately 14.9% of Coincheck Parent’s issued and outstanding Ordinary Shares. Pursuant to the investment agreement, KDDI subscribed for 28,536,516 Ordinary Shares for a subscription price of USD 2.28 per share, an aggregate subscription price of $65,063,256. KDDI, a Japanese corporation listed on the Tokyo Stock Exchange and headquartered in Tokyo, Japan, is a major Japanese telecommunications company that provides telecommunications services, finance and energy, IoT services for connected cars, and data center connectivity. Concurrently with the signing of the investment agreement, Coincheck 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.