Business Description

Overview We are a blank check company incorporated as a Cayman Islands exempted corporation on September 5, 2025, as Mercator I Acquisition Corp. as a Cayman Islands exempted company and formed for the purpose of effecting a merger, amalgamation, share exchange, asset acquisition, share purchase, reorganization or similar business combination with one or more businesses, which we refer to throughout this Report as our initial business combination. On October 29, 2025, we changed our name to HCM IV Acquisition Corp. We have not selected any business combination target and we have not, nor has anyone on our behalf, initiated any substantive discussions, directly or indirectly, with any business combination target. We may pursue an initial business combination target in any business or industry or at any stage of its corporate evolution. Our primary focus, however, will be in completing a business combination with an established business of scale poised for continued growth, led by a highly regarded management team. Our management team has an extensive track record of acquiring attractive assets at disciplined valuations, investing in growth while fostering financial discipline and improving business results. The 2024 SPAC Rules may materially affect our ability to complete any potential initial business combination and may increase the costs and time related thereto. Formation and Initial Public Offering On September 5, 2025, the Sponsor made a capital contribution of $25,000, or approximately $0.003 per share, to cover certain of the Company’s expenses, for which the Company issued 8,433,333 founders shares to the Sponsor. On November 3, 2025, the Company through a share recapitalization issued an additional 191,667 Class B ordinary shares to the Sponsor and therefore the Sponsor now holds 8,625,000 founder shares, at approximately, $0.003 per share. Up to 1,125,000 of the founder shares were subject to forfeiture by the Sponsor for no consideration depending on the extent to which the underwriters’ over-allotment was exercised. On February 13, 2026, the underwriters exercised their over-allotment option in full as part of the closing of the Initial Public Offering. As such, the 1,125,000 founder shares are no longer subject to forfeiture. On February 11, 2026, the Sponsor assigned and transferred an aggregate of 75,000 founder shares to three independent directors of the Company in exchange for their services as independent directors through the Company’s initial Business Combination. At December 31, 2025, our Sponsor held 8,625,000 founder shares. On February 13, 2026, the Company consummated the initial public offering (“Initial Public Offering”) of 28,750,000 units (the “Units” and, with respect to the shares of Class A Ordinary Shares included in the Units being offered), which includes the full exercise by the underwriters of their over-allotment option in the amount of 3,750,000 Units, at $10.00 per Unit, generating gross proceeds of $287,500,000. Simultaneously with the closing of the Initial Public Offering, the Company consummated the sale of an aggregate of 4,666,667 Private Placement Warrants at a price of $1.50 per Private Placement Warrant, in a private placement to the Company’s Sponsor, and Cantor Fitzgerald & Co., the representative of the underwriters of the Initial Public Offering, generating gross proceeds of $7,000,000. Of those 4,666,667 Private Placement Warrants, the Sponsor purchased 3,833,333 Private Placement Warrants, and Cantor purchased 833,333 Private Placement Warrants. A total of $287,500,000 ($10.00 per Unit) from the net proceeds of the sale of the Units and the sale of the Private Placement Warrants was placed in the trust account (the “trust account”) maintained by Continental Stock Transfer & Trust Company, acting as trustee. General Our management is pragmatic, measuring our success in both immediate and continuous financial return balanced across all stakeholders. Our investment philosophy has been shaped by the many transactions we have originated, combined with our hands-on experiences as entrepreneurial leaders across the growth spectrum, from startups to multi-billion-dollar corporations. 1 We believe in quality management team s that lead attractive target businesses.…