Initial Beneficial Ownership · 3

Quantinuum Inc.

QNTNASDAQEQUITYCurrent

Initial Beneficial Ownership

Filed Jul 21, 2026Accepted Jul 21, 2026, 8:45 PM EDTFiling CIK 2110105Accession 0001193125-26-310987

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Structured filing — 3

ownership.xml

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Filing details

Report period: 2026-07-17
Issuer: Quantinuum Inc.
Issuer CIK: 0002110105
Trading symbol: QNT
No securities owned: Checked

Reporting owner 1

Name: Schulman Robin
Reporting owner CIK: 0001627835
Relationship: Officer
Officer title: CLO & Corporate Secretary
Address: C/O QUANTINUUM INC., 303 S TECHNOLOGY COURT, BROOMFIELD, CO, 80021

Remarks

Exhibit 24 - Power of Attorney

Signature 1

Signed: /s/ Robin Schulman
Date: 2026-07-21

Filed exhibits

EX-24 ↗ck0002110105-ex24.htm

Company context

Quantinuum is a leading quantum computing platform that offers solutions like hardware platforms, developer tools, application libraries and solution-targeted intellectual property (“IP”). Our vertically integrated quantum computing platform combines sophisticated quantum hardware systems and middleware with application software designed to make quantum computing deployable in real-world environments. By enabling hybrid quantum-classical computing workflows with our software, we believe we accelerate the creation of entirely new application categories, such as quantum-enabled AI.

Current securities

QNTNASDAQ · EQUITY · Current

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