Keystone Acquisition Corp. 8-K

What Happened

• Keystone Acquisition Corp. announced the closing of its initial public offering on June 4, 2026. The company sold 28,750,000 units (including 3,750,000 units from the underwriters’ full over‑allotment) at $10.00 per unit, generating gross proceeds of $287,500,000. Each unit includes one Class A ordinary share and one-half of a warrant; each full warrant allows purchase of one Class A share at $11.50, exercisable beginning 30 days after the company’s initial business combination.
• Simultaneous with the IPO, Keystone completed a private sale of 8,468,750 private placement warrants at $1.00 each, raising $8,468,750 (5,593,750 purchased by the Sponsor; 2,875,000 by the representatives). The company placed $288,218,750 of net proceeds (including up to $11.5M of deferred underwriter commission) into a U.S.-based trust account maintained by Efficiency as trustee.

Key Details

• IPO units sold: 28,750,000 units (includes 3,750,000 over‑allotment); price per unit: $10.00; IPO gross proceeds: $287,500,000 (June 4, 2026).
• Private Placement Warrants: 8,468,750 warrants sold at $1.00 each; proceeds $8,468,750; Sponsor bought 5,593,750; representatives bought 2,875,000.
• Warrant terms: exercise price $11.50; exercisable 30 days after completion of initial business combination; private placement warrants have transfer restrictions, cashless exercise features and registration rights as described in the prospectus.
• Corporate actions: adopted Amended and Restated Memorandum and Articles of Association (effective June 2, 2026); appointed independent directors John A. Boehner, Paul Y. Cho and Martin Payne (committee assignments and Class B share director compensation: Boehner 40,000 shares; Payne 35,000; Cho 25,000).

Why It Matters

• The filing confirms Keystone is now a public SPAC with substantial cash held in trust for an acquisition: most proceeds are restricted in a trust until an initial business combination, redemption, or other limited circumstances — limiting near‑term operating flexibility but protecting public investors’ capital intended for a deal.
• Warrants and private placement warrants create potential future dilution if exercised and give the sponsor/underwriters certain transfer and exercise rights that differ from public warrants; retail investors should note these distinctions and the 21‑month timeline (subject to the company’s governing documents) to complete a business combination or seek redemption.
• New independent directors and the adopted governing documents establish the company’s initial governance and compensation framework as it begins pursuing an acquisition strategy.