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KEYSTONE ACQUISITION CORP SEC Filings

KEYYU NASDAQ

Welcome to our dedicated page for KEYSTONE ACQUISITION SEC filings (Ticker: KEYYU), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.

Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on KEYSTONE ACQUISITION's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.

Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time EDGAR feed updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into KEYSTONE ACQUISITION's regulatory disclosures and financial reporting.

Rhea-AI Summary

Keystone Acquisition Corp. completed its initial public offering of 28,750,000 units at $10.00 per unit, raising gross proceeds of $287,500,000. Each unit includes one Class A ordinary share and half of a redeemable warrant exercisable at $11.50 per share.

The company also sold 8,468,750 private placement warrants for $1.00 each, adding $8,468,750. In total, $288,218,750, including $11,500,000 of deferred underwriting commission, was deposited into a U.S. trust account, giving public shareholders initial redemption value of $10.025 per share while the SPAC seeks a business combination.

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Rhea-AI Summary

Keystone Acquisition Corp. completed its initial public offering of 28,750,000 units, generating gross proceeds of $287,500,000. Each unit includes one Class A ordinary share and one-half of a redeemable warrant exercisable at $11.50 per share after a future business combination.

The company also sold 8,468,750 private placement warrants for $8,468,750, with terms that restrict transfer, allow cashless exercise and provide registration rights. In total, $288,218,750 from the IPO and private placement was deposited into a trust account for a future acquisition.

Keystone appointed three independent directors, set up staggered board classes, granted them Class B shares as compensation and adopted amended and restated governing documents in connection with the IPO.

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Keystone Acquisition Corp. files a prospectus to offer $250,000,000 through 25,000,000 units at $10.00 per unit. Each unit comprises one Class A ordinary share and one-half of one redeemable warrant; whole warrants exercise at $11.50 per share.

The offering places $250,625,000 (or $288,218,750 if the underwriters’ over-allotment option is exercised in full) into a U.S.-based trust account. Public shareholders may redeem their Class A ordinary shares in connection with an initial business combination. Founder shares and private placement warrants held by the sponsor and insiders create potential dilution and alignment risks described in the prospectus.

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Rhea-AI Summary

Keystone Acquisition Corp. director Martin J. Payne filed an initial Form 3 showing beneficial ownership of 35,000 Class B ordinary shares. These Class B shares are directly held, are convertible into the company’s Class A ordinary shares, and, according to the disclosure, have no expiration date.

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Keystone Acquisition Corp. director Cho Paul Yoonku reported his initial beneficial ownership on a Form 3. He holds 25,000 Class B ordinary shares, which are convertible into 25,000 Class A ordinary shares as described in the company’s Registration Statement on Form S-1.

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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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FAQ

How many KEYSTONE ACQUISITION (KEYYU) SEC filings are available on StockTitan?

StockTitan tracks 11 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 10, 2026.