Honeywell Dominates Quantum Computing Firm Quantinuum with 79% Stake

Honeywell International Inc., through itself and subsidiary Honeywell Holdings International Inc., has reported beneficial ownership of Quantinuum Inc. Class A common stock as of June 30, 2026.

The company beneficially owns 124,628,729 shares, representing 79.1% of Quantinuum's Class A common stock, based on 32,862,895 shares outstanding at the completion of Quantinuum's June 5, 2026 initial public offering and assuming redemption of related LLC units into Class A shares.

The position includes 95,998,655 shares underlying units over which Honeywell International has sole voting and dispositive power and 28,630,074 shares over which voting and dispositive power is shared with Honeywell Holdings International.