secwatch.observer — SEC 8-K summary
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Issuer:     Keystone Acquisition Corp. (KEYY)
CIK:        0002102771
Form:       8-K
Filed at:   2026-06-08T19:37:22+00:00
Accession:  0001213900-26-066255
Event type: other_material
Sentiment:  neutral
Materiality: 0.60
Item codes: 1.01, 3.02, 5.02, 5.03, 8.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Keystone Acquisition Corp. closes $287.5M SPAC IPO, appoints John Boehner to board
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- IPO of 28.75M units at $10.025/unit, including full over-allotment; gross proceeds $287.5M.
- Concurrent private placement of 8.47M warrants at $1.00/warrant to sponsor and underwriters; trust funded $288.2M.
- Target sectors: US industrial development (energy transition, critical minerals, shipbuilding, semiconductors, data centers, digital assets).
- Board adds former Speaker John Boehner, Paul Cho, Martin Payne as independent directors; Boehner chairs Compensation Committee.

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/2102771/000121390026066255/0001213900-26-066255-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/2102771/000121390026066255/ea0293899-8k_keystone.htm
  HTML page:      https://secwatch.observer/filing/0001213900-26-066255

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer