マネックスグループ（8698） – Coincheck Group B.V. Announces Submission of Confidential Draft Registration Statement on Form F-4 with respect to Proposed Business Combination

Coincheck Group B.V. Announces Submission of Confidential Draft Registration Statement on Form F-4 with respect to Proposed Business Combination and a De-SPAC with Thunder Bridge Capital Partners IV, Inc. TOKYO, April 5, 2022 – Coincheck Group B.V. (headquarters: Amsterdam, Netherlands; Managing Director: Akira Inoue; “CCG”), which will become a holding company of Coincheck, Inc. (headquarters: Tokyo, Japan; Representative Director & President: Satoshi Hasuo; “Coincheck”), and Thunder Bridge Capital Partners Ⅳ, Inc. (headquarters: Virginia, United States; President & CEO: Gary Simanson; “THCP”), a special purpose acquisition company (“SPAC”) listed on the Nasdaq Global Market (Nasdaq), have submitted a confidential draft of a Registration Statement on Form F-4 to the U.S. Securities and Exchange Commission (the “SEC”) on April 4, 2022 (EST) with respect to their previously announced proposed business combination. As previously announced in the press release on March 22, 2021, “Coincheck Group B.V. to become public on the Nasdaq through a De-SPAC with Thunder Bridge Capital Partners IV, Inc.,” CCG and THCP executed a definitive business combination agreement through which CCG will become a publicly traded, Nasdaq-listed company under the ticker symbol “CNCK” (the “Transaction”). Completion of the Transaction, which is expected to close in the second half of 2022, is subject to approval by THCP’s shareholders, the Registration Statement being declared effective by the SEC, and satisfaction or waiver of other customary closing conditions identified in the business combination agreement. CCG expects to have an estimated implied equity value before the Transaction of approximately US$1.25 billion (the total market value of the shares of Coincheck, which will be a wholly-owned subsidiary of CCG) plus potential earn-out (price adjustment) consideration equal to a maximum of 50 million shares, which is valued at US$500 million (assume US$10 per share, which will be the initial share price for CCG shares). Contact: Akiko Kato Yuki Nakano, Minaka Aihara Corporate Communications Office Investor Relations, Financial Control Department Monex Group, Inc., +81-3-4323-8698 Monex Group, Inc., +81-3-4323-8698 1 Important Information About the Business Combination and Where to Find It In connection with the proposed business combination, CCG intends to file a registration statement on Form F-4 that will include a preliminary proxy statement to be distributed to stockholders of THCP in connection with THCP’s solicitation of proxies for the vote by its stockholders with respect to the proposed business combination. After the registration statement has been filed and declared effective by the U.S. Securities and Exchange Commission (“SEC”), THCP will mail a definitive proxy statement / prospectus to its stockholders as of the record date established for voting on the proposed business combination and the other proposals regarding the proposed business combination set forth in the proxy statement. CCG or THCP may also file other documents with the SEC regarding the proposed business combination. Before making any investment or voting decision, stockholders and other interested persons are advised to read, when available, the registration statement and preliminary proxy statement / prospectus and any amendments thereto, and the definitive proxy statement / prospectus in connection with THCP’s solicitation of proxies for the special meeting to be held to approve the transactions contemplated by the proposed business combination because these materials will contain important information about CCG, Coincheck, THCP and the proposed transaction. Stockholders will also be able to obtain a copy of the preliminary proxy statement / prospectus and the definitive proxy statement / prospectus once they are available, without charge, at the SEC’s website at www.sec.gov, or by directing a request to: Thunder Bridge Capital Partners IV, Inc., 9912 Georgetown Pike, Suite D203, Great Falls, VA 22066. Participants in the Solicitation CCG, Coincheck and THCP and their respective directors and officers may be deemed participants in the solicitation of proxies of THCP’s stockholders in connection with the proposed business combination. THCP’s stockholders and other interested persons may obtain, without charge, more detailed information regarding the directors and officers of Coincheck and THCP at Coincheck’s website at corporate.coincheck.com, or in THCP’s registration statement on Form S-1 filed on June 21, 2021, respectively. Information regarding the persons who may, under SEC rules, be deemed participants in the solicitation of proxies to THCP’s stockholders in connection with the proposed transaction will be set forth in the proxy statement / prospectus for the transaction when available. Additional information regarding the interests of participants in the solicitation of proxies in connection with the proposed transaction will be included in the proxy statement / prospectus filed with the SEC in connection with the proposed business combination. Forward-Looking Statements This document includes “forward looking statements” within the meaning of the “safe harbor” provisions of the United States Private Securities Litigation Reform Act of 1995, that reflects the current views with respect to, among other things, the future operations and financial performance of the Company, THCP, Coincheck and CCG. Forward-looking statements may be identified by the use of words such as “forecast,” “intend,” “seek,” “target,” “anticipate,” “believe,” “could,” “continue,” “expect,” “estimate,” “may,” “plan,” “outlook,” “future,” and “project” and other similar expressions that predict or indicate future events or trends or that are not statements of historical matters. Such forward looking statements include, but not limited to, estimated financial information. Such forward looking statements with respect to revenues, earnings, performance, strategies, prospects and other aspects of the businesses of the 2 Company, THCP, Coincheck, or CCG after completion of the proposed business combination are based on current expectations that are subject to risks and uncertainties. No assurance can be given that future developments affecting Company, THCP, Coincheck or CCG will be those that are anticipated. Actual results may differ materially from current expectations due to changes in global, regional or local economic, business, competitive, market, regulatory and other factors, many of which are beyond the control of the Company, CCG, THCP and Coincheck. Should one or more of these risks or uncertainties materialize, or should any of the assumptions prove incorrect, actual results may vary in material respects from those projected in these forward-looking statements. A number of factors could cause actual results or outcomes to differ materially from those indicated by such forward looking statements. These factors include, but are not limited to: (1) the occurrence of any event, change or other circumstances that could give rise to the termination of the Business Combination Agreement (the “Agreement”) and the proposed business combination contemplated thereby; (2) the inability to complete the transactions contemplated by the Agreement due to the failure to obtain approval of the stockholders of THCP or other conditions to closing in the Agreement; (3) the ability to meet Nasdaq’s listing standards following the consummation of the transactions contemplated by the Agreement; (4) the risk that the proposed transaction disrupts current plans and operations of Coincheck as a result of the announcement and consummation of the transactions described herein; (5) the ability to recognize the anticipated benefits of the proposed business combination, which may be affected by, among other things, competition, the ability of CCG to grow and manage growth profitably, maintain relationships with customers and business partners and retain its management and key employees; (6) costs related to the proposed business combination; (7) changes in applicable laws or regulations; (8) the possibility that Coincheck may be adversely affected by other economic, business, and/or competitive factors; and (9) other risks and uncertainties indicated from time to time in other documents filed or to be filed with the SEC by THCP or CCG. The Company cautions that the foregoing list of factors is not exhaustive. The recipient of this material should not place undue reliance upon any forward-looking statements, which speak only as of the date made. The Company, CCG, THCP and Coincheck undertake no commitment to update or revise the forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required by law. This material is an English translation of a Japanese announcement made on the date above. Although the Company intended to faithfully translate the Japanese document into English, the accuracy and correctness of this English translation is not guaranteed and thus you are encouraged to refer to the original Japanese document. This translation was made as a matter of record only and does not constitute an offer to sell or to solicit an offer to buy securities in the U.S. 3