GCM Grosvenor Inc-A美股市值招股说明书(2025-11-18版)

Class A Common Stock We have entered into an equity distribution agreement, or the Equity Distribution Agreement, with Morgan Stanley & Co. LLC (the“Agent”), dated November 17, 2025, relating to the sale of shares of our Class A common stock, $0.0001 par value per share, offeredby this prospectus supplement and the accompanying prospectus pursuant to a continuous offering program. In accordance with theterms of the Equity Distribution Agreement, under this prospectus supplement and the accompanying prospectus, we may offer and Sales of our Class A common stock, if any, under this prospectus supplement and the accompanying prospectus will be made by anymethod permitted that is deemed an “at the market offering” as defined in Rule 415(a)(4) under the Securities Act of 1933, asamended, or the Securities Act. The Agent is not required to sell any specific amount, but will act as our sales agent using The Agent will be entitled to compensation at a commission rate of 2.5% of the gross sales price per share sold under the EquityDistribution Agreement. See “Plan of Distribution” beginning on page S-11 for additional information regarding the compensation tobe paid to the Agent. In connection with the sale of shares of our Class A common stock on our behalf, the Agent will be deemed to be Our Class A common stock is listed on the Nasdaq Stock Market LLC (“Nasdaq”) under the symbol “GCMG.” On November 14,2025, the last reported sale price of our Class A common stock on Nasdaq was $11.50 per share. Investing in our Class A common stock involves risks. See the section titled “Risk Factors” beginning on page S-3 and the documentsthat are incorporated by reference into this prospectus supplement. The Securities and Exchange Commission and state securities regulators have not approved or disapproved these securities, ordetermined if this prospectus supplement or the accompanying prospectus is truthful or complete. Any representation to the contrary is MORGAN STANLEY Prospectus Supplement dated November 17, 2025 TABLE OF CONTENTS Prospectus Supplement Prospectus ABOUT THIS PROSPECTUS SUPPLEMENT This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering ofClass A common stock and also adds to and updates the information contained in the accompanying prospectus and the documentsincorporated by reference into this prospectus supplement and the accompanying prospectus. The second part is the accompanyingprospectus dated June 27, 2025, included in our registration statement on Form S-3 (File No. 333-288378), along with the documentsincorporated by reference therein, which provides more general information, some of which may not apply to this offering. Generally,when we refer to this prospectus, we are referring to both parts of this document combined. To the extent there is a conflict betweenthe information contained in this prospectus supplement, on the one hand, and the information contained in the accompanying This prospectus supplement and the accompanying prospectus are part of a “shelf” registration statement that we filed with theSEC. Under this shelf registration process, we may offer from time to time various securities, of which this offering of shares of ourClass A common stock is a part. Such registration statement also includes exhibits that provide more detail on the matters discussed inthis prospectus supplement and the accompanying prospectus. You should read this prospectus supplement, the accompanying We have not, and the Agent has not, authorized anyone to provide you with information, or to make any representation, differentfrom that contained or incorporated by reference in this prospectus supplement and the accompanying prospectus. We and the Agenttake no responsibility for, and can provide no assurance as to the reliability of, any other information that others may give you. Youshouldassume that the information appearing in this prospectus supplement,the accompanying prospectus,the documents We further note that the representations, warranties and covenants made by us in any agreement that is filed as an exhibit to anydocument that is incorporated by reference in this prospectus supplement or the accompanying prospectus were made solely for thebenefit of the parties to such agreement, including, in some cases, for the purpose of allocating risk among the parties to suchagreements, and should not be deemed to be a representation, warranty or covenant to you. Moreover, such representations, warranties We are not, and the Agent is not, making an offer to sell our Class A common stock in any jurisdiction where the offer or sale isnot permitted. Neither this prospectus supplement nor the accompanying prospectus constitute, and may not be used in connectionwith, an offer to sell, or a solicitation of an offer to buy, any securities offered by this prospectus supplement by any person in anyjurisdiction in which it is unlawful