SCHEDULE 13GFiling Date: Aug 13, 2026

Quantinuum Inc. (QNT)

Passive Stake

View SEC Filing

ACC: 0001493152-26-037881

Stake

Honeywell International Inc.

Rule 13d-1(d)

Passive

Class A Common Stock, par value $0.0001 per shareCUSIP 74768A104

Percent79.10%

Shares124.63M

Event dateJun 30

Sole voting / Sole dispositive96.00M / 96.00M

Shared voting / Shared dispositive28.63M / 28.63M

Reporting persons

Honeywell International Inc.

· CO

79.10%

Honeywell Holdings International Inc.

· CO

46.60%

Group total — do not add member rows.

Original SEC Filing Text expand_more

=== SEC Schedule 13G — Passive Stake === Issuer: Quantinuum Inc. Issuer CIK: 0002110105 Class: Class A Common Stock, par value $0.0001 per share CUSIP: 74768A104 Event Date: 2026-06-30 Rule: Rule 13d-1(d) --- Reporting Persons --- - Honeywell International Inc. (no CIK) 124628729.00 sh 79.1% CO - Honeywell Holdings International Inc. (no CIK) 28630074.00 sh 46.6% CO