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Keystone Acquisition Corp. (KEYYU) SEC Filings, May-Jun 2026

KEYYU NASDAQ
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Keystone Acquisition Corp. director John A. Boehner filed an initial ownership report showing holdings of 40,000 Class B ordinary shares. These Class B shares are convertible into 40,000 Class A ordinary shares as described in the company’s registration statement and have no expiration date.

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Keystone Acquisition Corp. filed an initial insider ownership report for Cho Jaiho, who serves as Chief Financial Officer. This Form 3 identifies Cho as a reporting person for the company’s securities. The filing excerpt does not show any buy or sell transactions or derivative positions for Cho.

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Keystone Acquisition Corp. Chief Executive Officer Richard H. Chin has filed an initial Form 3, which is the required statement of beneficial ownership for company insiders. The filing identifies him as an officer but, in the provided data, shows no reported transactions or derivative positions.

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Keystone Acquisition Corp. filed an initial insider ownership report showing that Keystone International Acquisition Management LLC, managed by Jae Hyun (James) Park, directly holds 9,483,333 Class B ordinary shares. These Class B shares are convertible into the issuer’s Class A ordinary shares and have no expiration date.

The Class B shares beneficially owned include up to 1,250,000 shares that may be forfeited depending on how much of the underwriters’ over-allotment option is exercised in the company’s initial public offering of units.

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Keystone Acquisition Corp. is launching a $250,000,000 initial public offering of 25,000,000 units at $10.00 each, with each unit consisting of one Class A ordinary share and one-half of one redeemable warrant. The company is a Cayman Islands blank check vehicle targeting high-growth sectors tied to U.S. industrial innovation, including energy transition, critical minerals, shipbuilding, semiconductors, digital infrastructure, and digital assets. Of the IPO and private placement proceeds, $250,625,000 will be placed in a U.S. trust account. Public shareholders will have redemption rights and the company has 21 months from closing to complete a business combination, with possible extensions subject to shareholder approval. Sponsor-held Class B founder shares and private placement warrants were acquired at nominal cost and carry anti-dilution protections, which may result in material dilution to public shareholders.

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FAQ

How many Keystone Acquisition (KEYYU) SEC filings are available on StockTitan?

StockTitan tracks 15 SEC filings for Keystone Acquisition (KEYYU), including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, and Form 4 insider trading disclosures. Each filing includes AI-generated summaries, impact scoring, and sentiment analysis.

When was the most recent SEC filing for Keystone Acquisition (KEYYU)?

The most recent SEC filing for Keystone Acquisition (KEYYU) was filed on June 3, 2026.