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 Acquisition to Separately List KEYY Shares and KEYYW Warrants on June 22

<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 IPO units may separate into KEYY shares and KEYYW warrants beginning around June 22, 2026. The separation could unlock value, improve liquidity, and create independent trading dynamics for the two securities. Investors should consider SPAC-specific risks, including potential failure to complete an initial business combination.</p>
  </section>

  <section data-block="ai-summary-bullets">
    <h3>Key Points</h3>
    <ul><li>Keystone Acquisition units may separate into KEYY shares and KEYYW warrants.</li><li>Separation expected to begin around June 22, 2026.</li><li>Separation allows KEYY and KEYYW to trade independently; unseparated units stay KEYYU.</li><li>No fractional warrants issued; transfer agent Efficiency INC. handles separation.</li></ul>
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  <section data-block="companies-mentioned">
    <h3>Companies Mentioned</h3>
    <ul><li><strong>Keystone Acquisition Corp. (KEYYU)</strong>: Units separation into KEYY shares and KEYYW warrants; immediate near-term price sensitivity possible.</li><li><strong>Keystone Acquisition Corp. (KEYY)</strong>: Class A ordinary shares expected to trade separately starting around June 22, 2026.</li><li><strong>Keystone Acquisition Corp. (KEYYW)</strong>: Warrants expected to trade separately starting around June 22, 2026.</li></ul>
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  <section data-block="category">
    <h3>Corporate Developments</h3>
    <p>Category: Corporate Developments. The article describes a SPAC unit separation event that alters how the securities trade and could impact liquidity and valuation dynamics for KEYY-related instruments.</p>
  </section>

  <section data-block="market-moving">
    <h3>Market-Moving</h3>
    <ul><li>June 22, 2026 separation date could trigger intraday KEYY moves.</li><li>KEYY vs KEYYW price dispersion may present arbitrage.</li><li>Increased liquidity may attract more trading interest in KEYY.</li><li>Broader SPAC risk remains; business combination timing governs longer-term upside.</li></ul>
  </section>

  <section data-block="key-facts">
    <h3>Key Facts</h3>
    <ul><li>IPO units: 28,750,000; underwriters&#039; overallotment: 3,750,000.</li><li>Separation date: on or about June 22, 2026.</li><li>Tickers: KEYY (shares), KEYYW (warrants); units remain KEYYU.</li><li>No fractional warrants issued upon separation.</li></ul>
  </section>

  <section data-block="trading-thesis">
    <h3>Trading Thesis</h3>
    <p>KEYY could gain near-term liquidity and price discovery post-separation, with volatility likely until valuation converges.</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 IPO units may separate into KEYY shares and KEYYW warrants beginning around June 22, 2026. The separation could unlock value, improve liquidity, and create independent trading dynamics for the two securities. Investors should consider SPAC-specific risks, including potential failure to complete an initial 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

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