NASDAQ · Finance

Keystone Acquisition Corp. (KEYY)

At June 30, 2026 it held $1.1M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 13, 2026.

Price

$9.91

0.00% on the day · September 24, 2026

52-week range $9.84 to $10.00

What Keystone Acquisition Corp. does

Keystone Acquisition Corp. is registered with the SEC under industry code SIC 6770 (Blank Checks). Its shares trade on NASDAQ under the ticker KEYY.

Latest SEC filings

What Keystone Acquisition Corp. has filed recently, newest first. Each links to the original document on SEC EDGAR.

August 13, 2026
Quarterly report 10-Q · period to June 30, 2026Net income was $74K.
August 13, 2026
Passive stake (5% or more) SCHEDULE 13G
August 13, 2026
Passive stake (5% or more) SCHEDULE 13G
June 18, 2026
Other event 8-K
June 10, 2026
Other event 8-K
June 8, 2026
Executive or director change 8-K
June 3, 2026
Securities offering prospectus 424B4
May 28, 2026
IPO registration (amended) S-1/A
May 4, 2026
IPO registration S-1

Recent insider filings (Forms 3, 4 and 144): 6, the latest on June 2, 2026. Insider transactions on SEC

Who owns KEYY

Three views from three kinds of SEC filings, each with its own date. They overlap and are not added up.

5% holders

Anyone who owns more than 5% of a class of shares must say so on Schedule 13D (if they may seek to influence the company) or 13G (a passive holder). The latest filing of each holder is shown: 13G filings of the last 2 years, 13D of the last 3.

Holder	Of class	Shares	Filed
Magnetar Financial LLC13G, passive with 3 related filers	6.96%	2,000,000	August 13, 2026
AQR Capital Management, LLC13G, passive with 2 related filers	5.99%	1,723,275	August 13, 2026

Largest institutional holders

No Form 13F positions imported for this company yet.

Insiders

Reported holdings of insiders who filed a Form 4 in the last 12 months: the shares each one held after their latest reported transaction. This is not the total held by all insiders.

We have not read this company's Form 4 filings yet.

Schedule 13D/13G filings on SEC.gov

All filings on SEC EDGAR

Questions about KEYY

What does Keystone Acquisition Corp. do?

Keystone Acquisition Corp. is registered with the SEC under industry code SIC 6770 (Blank Checks). Its shares trade on NASDAQ under the ticker KEYY.

When did Keystone Acquisition Corp. last report?

Its most recent periodic report is the quarterly report (10-Q) filed on August 13, 2026. It covers the period to June 30, 2026.

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Where the numbers come from

Financial figures are the values Keystone Acquisition Corp. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.

Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.