New York, New York, June  18, 2026  (GLOBE NEWSWIRE) --  Keystone Acquisition Corp. (NASDAQ:KEYYU) (the &#34;Company&#34;) announced that holders of the units sold in the Company&#39;s initial public offering of 28,750,000 units,

KEYY

Keystone Acquisition Corp. Announces the Separate Trading of its Class A Ordinary Shares and Warrants, Commencing on or about June 22, 2026.

Keystone SPAC unit separation to unlock KEYY and KEYYW trading dynamics in June 2026

<section class="insight" data-version="1">
  <section data-block="information">
    <h3>Information</h3>
    <p>New York, New York, June  18, 2026  (GLOBE NEWSWIRE) --  Keystone Acquisition Corp. (NASDAQ:KEYYU) (the &amp;#34;Company&amp;#34;) announced that holders of the units sold in the Company&amp;#39;s initial public offering of 28,750,000 units,</p>
  </section>

  <section data-block="ai-summary-paragraph">
    <h3>AI Summary</h3>
    <p>Keystone Acquisition Corp. announced that holders of its IPO units may separate the Class A shares and warrants starting around June 22, 2026. The 28.75 million units include 3.75 million from the underwriter’s option; separated shares and warrants will trade as KEYY and KEYYW, with unseparated units remaining KEYYU. The move increases liquidity and creates price discovery ahead of a potential business combination.</p>
  </section>

  <section data-block="ai-summary-bullets">
    <h3>Key Points</h3>
    <ul><li>Keystone units separate into KEYY shares and KEYYW warrants around June 22, 2026.</li><li>28,750,000 units issued; 3,750,000 from underwriter overallotment.</li><li>Unseparated units trade as KEYYU; separated shares/warrants trade as KEYY/KEYYW.</li><li>Transfer agent Efficiency INC. must be contacted to separate units.</li><li>Registration effective; forward-looking statements cover initial business combination.</li></ul>
  </section>

  <section data-block="companies-mentioned">
    <h3>Companies Mentioned</h3>
    <ul><li><strong>Keystone Acquisition Corp. (KEYYU)</strong>: Issuer of IPO units; separation into KEYY and KEYYW expected around June 22, 2026; near-term liquidity and trading dynamics.</li><li><strong>Keystone Acquisition Class A ordinary shares (KEYY)</strong>: Will trade starting around June 22, 2026 following separation; provides direct equity exposure to Keystone&#039;s future business combination.</li><li><strong>Keystone Acquisition Warrants (KEYYW)</strong>: Warrants to trade separately after separation; warrants&#039; value depends on share price and potential at listing.</li></ul>
  </section>

  <section data-block="category">
    <h3>Corporate Developments</h3>
    <p>This is a corporate development tied to a SPAC unit separation, a routine liquidity/structuring event that can create near-term trading opportunities before a business combination.</p>
  </section>

  <section data-block="market-moving">
    <h3>Market-Moving</h3>
    <ul><li>June 22 separation date could prompt price re-pricing between KEYY and KEYYU/KEYYW.</li><li>Warrant valuation gap may compress or widen depending on post-separation liquidity.</li><li>No immediate cash impact; longer-term value tied to business combination.</li><li>Arbitrage activity possible between KEYYU and separate KEYY/KEYYW futures.</li></ul>
  </section>

  <section data-block="key-facts">
    <h3>Key Facts</h3>
    <ul><li>Offering: 28,750,000 units in Keystone IPO.</li><li>Underwriters exercised overallotment for 3,750,000 units.</li><li>Offering closed and units completed on June 4, 2026.</li><li>Separations commence on or about June 22, 2026.</li><li>Trading tickers: KEYYU (units), KEYY (Class A shares), KEYYW (warrants).</li><li>Registration statement effective under Section 8(a) of the Securities Act.</li><li>Transfer agent: Efficiency INC.</li><li>Forward-looking statements regarding initial business combination.</li></ul>
  </section>

  <section data-block="trading-thesis">
    <h3>Trading Thesis</h3>
    <p>Near-term catalyst is the June 22 unit separation; KEYY likely gains liquidity and active trading within 2–6 weeks.</p>
  </section>
</section>


<link type="text/css" rel="stylesheet" href="https://www.globenewswire.com/styles/gnw_nitf.css"></link><p>New York, New York, June  18, 2026  (GLOBE NEWSWIRE) --  Keystone Acquisition Corp. (NASDAQ:<a class="ticker" href="https://www.benzinga.com/quote/KEYYU">KEYYU</a>) (the "Company") announced that holders of the units sold in the Company's initial public offering of 28,750,000 units, which includes 3,750,000 units issued pursuant to the exercise by the underwriters of their overallotment option in full, completed on June 4, 2026 (the "Offering"), may elect to separately trade the Class A ordinary shares and warrants included in the units commencing on or about June 22, 2026. Any units not separated will continue to trade on The Nasdaq Global Market under the symbol "KEYYU," and each of the Class A ordinary shares and warrants will separately trade on The Nasdaq Global Market under the symbols "KEYY" and "KEYYW," respectively. No fractional warrants will be issued upon separation of the units and only whole warrants will trade. Holders of units will need to have their brokers contact Efficiency INC., the Company's transfer agent, in order to separate the units into Class A ordinary shares and warrants.</p>  <p>A registration statement relating to these securities has become effective pursuant to Section 8(a) of the Securities Act of 1933, as amended. This press release shall not constitute an offer to sell or the solicitation of an offer to buy, nor shall there be any sale of these securities in any state or jurisdiction in which such offer, solicitation, or sale would be unlawful prior to registration or qualification under the securities laws of any such state or jurisdiction.</p>  <p><b>Cautionary Note Concerning Forward-Looking Statements</b></p>  <p>This press release contains statements that constitute "forward-looking statements," including with respect to the Company's search for an initial business combination. Forward-looking statements are subject to numerous conditions, many of which are beyond the control of the Company, including those set forth in the Risk Factors section of the Company's registration statement for the initial public offering filed with the SEC. Copies are available on the SEC's website, <a href="https://www.globenewswire.com/Tracker?data=sYi3ogKzXuB83UoPdvjWuQLyp-gNAKyZHfJ59aot6WQlmVaXtguLUQ6KFLzqnl4-bSspKpOLEypVMIAm9FmeUw==" rel="nofollow" target="_blank">www.sec.gov</a>. The Company undertakes no obligation to update these statements for revisions or changes after the date of this release, except as required by law.</p>  <p><b>About Keystone Acquisition Corp.</b></p>  <p>Keystone Acquisition Corp. is a blank check company formed for the purpose of effecting a merger, share exchange, asset acquisition, share purchase, reorganization, or similar business combination with one or more businesses. While the Company may pursue an initial business combination in any sector or geographic region, it intends initially to focus on opportunities and companies that sit within high growth sectors related to innovation in United States industrial development, with an emphasis on energy transition &amp; critical minerals, shipbuilding &amp; maritime engineering, semiconductors &amp; advanced electronics, digital infrastructure &amp; data centers, and digital assets &amp; crypto treasuries.</p>  <p><b>Contact</b></p>  <p>Jake Cho<br></br>Chief Financial Officer<br></br>Keystone Acquisition Corp.<br></br><a href="https://www.globenewswire.com/Tracker?data=J63vcOqkoZjntogqsIGI0unM6ccarUCO9nB2qfYbdb1_YLn6I5mwfd1ifqw0vfgHuHBSlMT8wRKPZgiSPszaMVoU8FQPOZYxSpMvnTnYkW8=" rel="nofollow" target="_blank">jake.cho@kystinter.com</a></p> <img alt="" class="__GNW8366DE3E__IMG" src="https://www.globenewswire.com/newsroom/ti?nf=OTc0OTM4NiM3NjY4NzQzIzUwMDE2MjE2Mg=="></img> <br></br><img alt="" src="https://ml.globenewswire.com/media/OTExYTYxOTItMjk5MC00ODU3LTkyNDAtYmUwZjExZGZmZDk0LTUwMDE2MjE2Mi0yMDI2LTA2LTE4LWVu/tiny/Keystone-Acquisition-Corp-.png" referrerpolicy="no-referrer-when-downgrade"></img>

Keystone Acquisition Corp. announced that holders of its IPO units may separate the Class A shares and warrants starting around June 22, 2026. The 28.75 million units include 3.75 million from the underwriter’s option; separated shares and warrants will trade as KEYY and KEYYW, with unseparated units remaining KEYYU. The move increases liquidity and creates price discovery ahead of a potential business combination.

Keystone Acquisition Corp. Announces the Separate Trading of its Class A Ordinary Shares and Warrants, Commencing on or about June 22, 2026.

AI Summary

Sentiment Rationale

Trading Thesis

Market-Moving

Key Facts

Companies Mentioned

Corporate Developments

Related News