KEYY Keystone Acquisition Corp.

CIK 0002102771 3 ready 8-Ks latest June 18, 2026, 12:18 PM ET RSS · JSON

Activity: NORMAL 0 filings / 30d vs 0 baseline Risk accumulating: repeated leadership change (3)

Ready 8-Ks 3

Latest filing June 18, 2026, 12:18 PM ET

Top materiality 0.75

Event mix other_material ×2 · other ×1

Sentiment 0 pos · 0 neg · 3 neu

Executive change recent →

Recent 8-K filings for KEYY

Highest-materiality recent filing

Keystone Acquisition Corp. closes $287.5M IPO and $8.5M private placement

June 10, 2026, 3:08 PM ET other material materiality 0.75 neutral item 8.01 item 9.01

IPO of 28,750,000 units at $10.00/unit raised $287.5M gross.
Private placement of 8,468,750 warrants at $1.00 each raised $8.47M.

Read filing →

June 18, 2026, 12:18 PM ET other materiality 0.10 neutral item 8.01 item 9.01

Keystone Acquisition Corp. announces separate trading of Class A shares and warrants starting June 22, 2026

Holders of 28,750,000 units (including overallotment) from IPO completed June 4, 2026 may elect separate trading.
June 10, 2026, 3:08 PM ET other material materiality 0.75 neutral item 8.01 item 9.01

Keystone Acquisition Corp. closes $287.5M IPO and $8.5M private placement

IPO of 28,750,000 units at $10.00/unit raised $287.5M gross.
June 8, 2026, 3:37 PM ET other material materiality 0.60 neutral item 1.01 item 3.02 item 5.02 item 5.03 item 8.01 item 9.01 ◈ executive_change ×3◈ Equity Issuances◈ Governance Changes

Keystone Acquisition Corp. closes $287.5M SPAC IPO, appoints John Boehner to board

IPO of 28.75M units at $10.025/unit, including full over-allotment; gross proceeds $287.5M.

Executive changes

Appointed

John A. Boehner

Director

KEYY · Keystone Acquisition Corp.

Effective: 2026-06-02
Filed: June 8, 2026, 3:37 PM ET

On June 2, 2026, in connection with the IPO, Speaker John A. Boehner, Paul Y. Cho and Martin Payne were appointed to the board of directors of the Company (the “ Board ”).

Appointed

Martin Payne

Director

KEYY · Keystone Acquisition Corp.

Effective: 2026-06-02
Filed: June 8, 2026, 3:37 PM ET

On June 2, 2026, in connection with the IPO, Speaker John A. Boehner, Paul Y. Cho and Martin Payne were appointed to the board of directors of the Company (the “ Board ”).

Appointed

Paul Y. Cho

Director

KEYY · Keystone Acquisition Corp.

Effective: 2026-06-02
Filed: June 8, 2026, 3:37 PM ET

On June 2, 2026, in connection with the IPO, Speaker John A. Boehner, Paul Y. Cho and Martin Payne were appointed to the board of directors of the Company (the “ Board ”).

Materiality & sentiment trend

Max materiality 0.75 · Median 0.60 · Most common event other_material

0 positive 0 negative 3 neutral

source · KEYY on sec.gov