Latest 10-Q

What changed in Keystone Acquisition Corp.'s latest quarterly report, compared with the one before.

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IPO prospectus

Keystone Acquisition Corp.’s initial public offering: where it stands and what the registration statement says.

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Insider trades

Open-market trades from Form 4. 10b5-1 marks a plan set in advance.Open-market buys and sales by officers, directors and 10% owners, from SEC Form 4. A plan set in advance is marked 10b5-1.

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13F holders

Funds that report this stock, checked against market prices.Fund managers with over $100 million in US-listed stocks file a 13F each quarter, up to 45 days after quarter end. Long positions only.

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Trades by members of Congress

Disclosed in dollar ranges, up to 45 days after the trade.Members of Congress, their spouses and dependent children report trades in dollar ranges, up to 45 days after the trade.

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Lobbying

What Keystone Acquisition Corp. and its lobbying firms report each quarter.A company that lobbies with its own staff reports its expenses; a lobbying firm it hires reports the income it received. We count both.

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Institutional ownership over time

How many funds reported holding the stock at the end of each quarter, and how many shares they held between them.

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More filings and data

Each opens the table.

About the company

The basics from the company’s SEC registration.

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Price of KEYYU, not of the company’s common stock

$10.02−$0.11 (−1.09%) Nov 13 close
Oct 13, 2026: $10.06Oct 14, 2026: $10.06Oct 15, 2026: $10.06Oct 16, 2026: $10.07Oct 19, 2026: $10.07Oct 20, 2026: $10.07Oct 21, 2026: $10.07Oct 22, 2026: $10.07Oct 23, 2026: $10.05Oct 26, 2026: $10.05Oct 27, 2026: $10.05Oct 28, 2026: $10.05Oct 29, 2026: $10.05Oct 30, 2026: $10.05Nov 2, 2026: $10.09Nov 3, 2026: $10.09Nov 4, 2026: $10.09Nov 5, 2026: $10.09Nov 6, 2026: $10.09Nov 9, 2026: $10.09Nov 10, 2026: $10.09Nov 11, 2026: $10.15Nov 12, 2026: $10.13Nov 13, 2026: $10.02
Oct 13, 2026Low $10.02 · High $10.15Nov 13, 2026
Aug 13, 2026: $10.15Aug 14, 2026: $10.15Aug 17, 2026: $10.11Aug 18, 2026: $10.05Aug 19, 2026: $10.05Aug 20, 2026: $10.05Aug 21, 2026: $10.05Aug 24, 2026: $10.05Aug 25, 2026: $10.05Aug 26, 2026: $10.05Aug 27, 2026: $10.05Aug 28, 2026: $10.05Aug 31, 2026: $10.05Sep 1, 2026: $10.05Sep 2, 2026: $10.05Sep 3, 2026: $10.05Sep 4, 2026: $10.05Sep 8, 2026: $10.05Sep 9, 2026: $10.15Sep 10, 2026: $10.15Sep 11, 2026: $10.15Sep 14, 2026: $10.15Sep 15, 2026: $10.15Sep 16, 2026: $10.15Sep 17, 2026: $10.15Sep 18, 2026: $10.15Sep 21, 2026: $10.15Sep 22, 2026: $10.11Sep 23, 2026: $10.11Sep 24, 2026: $10.11Sep 25, 2026: $10.11Sep 28, 2026: $10.11Sep 29, 2026: $10.11Sep 30, 2026: $10.15Oct 1, 2026: $10.15Oct 2, 2026: $10.15Oct 5, 2026: $10.06Oct 6, 2026: $10.06Oct 7, 2026: $10.06Oct 8, 2026: $10.06Oct 9, 2026: $10.06Oct 12, 2026: $10.06Oct 13, 2026: $10.06Oct 14, 2026: $10.06Oct 15, 2026: $10.06Oct 16, 2026: $10.07Oct 19, 2026: $10.07Oct 20, 2026: $10.07Oct 21, 2026: $10.07Oct 22, 2026: $10.07Oct 23, 2026: $10.05Oct 26, 2026: $10.05Oct 27, 2026: $10.05Oct 28, 2026: $10.05Oct 29, 2026: $10.05Oct 30, 2026: $10.05Nov 2, 2026: $10.09Nov 3, 2026: $10.09Nov 4, 2026: $10.09Nov 5, 2026: $10.09Nov 6, 2026: $10.09Nov 9, 2026: $10.09Nov 10, 2026: $10.09Nov 11, 2026: $10.15Nov 12, 2026: $10.13Nov 13, 2026: $10.02
Aug 13, 2026Low $10.02 · High $10.15Nov 13, 2026
Jun 3, 2026: $10.01Jun 4, 2026: $10.03Jun 5, 2026: $10.03Jun 8, 2026: $10.00Jun 9, 2026: $10.02Jun 10, 2026: $10.00Jun 11, 2026: $10.00Jun 12, 2026: $10.01Jun 15, 2026: $10.02Jun 16, 2026: $10.01Jun 17, 2026: $10.02Jun 18, 2026: $10.03Jun 22, 2026: $10.08Jun 23, 2026: $10.08Jun 24, 2026: $10.04Jun 25, 2026: $10.06Jun 26, 2026: $10.06Jun 29, 2026: $10.06Jun 30, 2026: $10.04Jul 1, 2026: $10.04Jul 2, 2026: $10.08Jul 6, 2026: $10.14Jul 7, 2026: $10.14Jul 8, 2026: $10.21Jul 9, 2026: $10.14Jul 10, 2026: $10.14Jul 13, 2026: $10.14Jul 14, 2026: $10.14Jul 15, 2026: $10.14Jul 16, 2026: $10.14Jul 17, 2026: $10.14Jul 20, 2026: $10.14Jul 21, 2026: $10.14Jul 22, 2026: $10.14Jul 23, 2026: $10.14Jul 24, 2026: $10.14Jul 27, 2026: $10.14Jul 28, 2026: $10.20Jul 29, 2026: $10.20Jul 30, 2026: $10.20Jul 31, 2026: $10.20Aug 3, 2026: $10.15Aug 4, 2026: $10.15Aug 5, 2026: $10.15Aug 6, 2026: $10.15Aug 7, 2026: $10.15Aug 10, 2026: $10.15Aug 11, 2026: $10.15Aug 12, 2026: $10.15Aug 13, 2026: $10.15Aug 14, 2026: $10.15Aug 17, 2026: $10.11Aug 18, 2026: $10.05Aug 19, 2026: $10.05Aug 20, 2026: $10.05Aug 21, 2026: $10.05Aug 24, 2026: $10.05Aug 25, 2026: $10.05Aug 26, 2026: $10.05Aug 27, 2026: $10.05Aug 28, 2026: $10.05Aug 31, 2026: $10.05Sep 1, 2026: $10.05Sep 2, 2026: $10.05Sep 3, 2026: $10.05Sep 4, 2026: $10.05Sep 8, 2026: $10.05Sep 9, 2026: $10.15Sep 10, 2026: $10.15Sep 11, 2026: $10.15Sep 14, 2026: $10.15Sep 15, 2026: $10.15Sep 16, 2026: $10.15Sep 17, 2026: $10.15Sep 18, 2026: $10.15Sep 21, 2026: $10.15Sep 22, 2026: $10.11Sep 23, 2026: $10.11Sep 24, 2026: $10.11Sep 25, 2026: $10.11Sep 28, 2026: $10.11Sep 29, 2026: $10.11Sep 30, 2026: $10.15Oct 1, 2026: $10.15Oct 2, 2026: $10.15Oct 5, 2026: $10.06Oct 6, 2026: $10.06Oct 7, 2026: $10.06Oct 8, 2026: $10.06Oct 9, 2026: $10.06Oct 12, 2026: $10.06Oct 13, 2026: $10.06Oct 14, 2026: $10.06Oct 15, 2026: $10.06Oct 16, 2026: $10.07Oct 19, 2026: $10.07Oct 20, 2026: $10.07Oct 21, 2026: $10.07Oct 22, 2026: $10.07Oct 23, 2026: $10.05Oct 26, 2026: $10.05Oct 27, 2026: $10.05Oct 28, 2026: $10.05Oct 29, 2026: $10.05Oct 30, 2026: $10.05Nov 2, 2026: $10.09Nov 3, 2026: $10.09Nov 4, 2026: $10.09Nov 5, 2026: $10.09Nov 6, 2026: $10.09Nov 9, 2026: $10.09Nov 10, 2026: $10.09Nov 11, 2026: $10.15Nov 12, 2026: $10.13Nov 13, 2026: $10.02
Jun 3, 2026Low $10.00 · High $10.21Nov 13, 2026
Congress purchase Congress sale Insider sale over $1M

Adjusted for stock splits; not for dividends. Where prices come from.

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Intraday and historical prices from TradingView. Quotes may be delayed.

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Information, not investment advice. Company matching is automatic; check the source before relying on one row.