Keystone Acquisition Corp. completed its public offering by selling 28.75 million units at $10.00 apiece, raising $287.5 million after underwriters exercised an overallotment option for an additional 3.75 million units. Each unit is composed of one Class A ordinary share and one-half of a redeemable warrant, with whole warrants exercisable to buy Class A shares at $11.50 per share.
The newly issued units started trading on the Nasdaq exchange under the ticker symbol KEYYU on June 3. The company indicated that, once individual trading of components begins, the Class A shares and the warrants will trade separately under the symbols KEYY and KEYYW, respectively.
Concurrently with the public offering, Keystone closed a private placement consisting of 8.47 million warrants sold at $1.00 per warrant, producing $8.47 million in gross proceeds. The private placement purchasers included Keystone International Acquisition Management LLC, which bought 5.59 million warrants; Cohen & Company Capital Markets, which purchased 2.73 million warrants; and Clear Street LLC, which acquired 143,750 warrants. These private warrants are exercisable at $11.50 per share.
From the proceeds of the public offering, Keystone placed $288.2 million in a trust account, which the company said represents $10.00 per public unit sold. Keystone Acquisition is a special purpose acquisition company established for the purpose of pursuing business combinations. The company specified its intended focus areas as U.S. industrial development opportunities in the following sectors: energy transition, critical minerals, shipbuilding, maritime engineering, semiconductors, advanced electronics, digital infrastructure, data centers, and digital assets.
Cohen & Company Capital Markets acted as the lead book-running manager for the offering, with Clear Street LLC serving as co-manager. The registration statement for the offering was declared effective by the Securities and Exchange Commission.
Context and structure of the securities issued
The units sold in the IPO combine ordinary equity exposure with partial warrant coverage - a structure that pairs a single Class A share with one-half of a redeemable warrant. Whole warrants, which will trade separately under the symbol KEYYW once individual trading commences, carry an exercise price fixed at $11.50 per share. The private placement included the sale of a separate class of warrants, supplied to named institutional purchasers at $1.00 each and likewise exercisable at $11.50.
Use of proceeds and stated investment focus
Keystone placed the bulk of the offering proceeds in trust - $288.2 million in total - reflecting the $10.00 per public unit valuation. The company framed its acquisition mandate around a set of U.S. industrial development themes, naming energy transition and critical minerals alongside shipbuilding, maritime engineering, semiconductors, advanced electronics, and digital infrastructure, including data centers and digital assets.
Managers and regulatory status
Cohen & Company Capital Markets led the book-running activities for the transaction, with Clear Street LLC as co-manager. The offering proceeded following the SEC's declaration that the registration statement was effective.