CQ Invest I LLC - 04 Jun 2026 Form 3 Insider Report for Quantinuum Inc. (QNT)

Reporting relationship: 10%+ Owner
Issuer ticker: QNT
Reported as of: 04 Jun 2026
Net transaction value: $0
SEC form: 3
Accepted by SEC: 04 Jun 2026, 19:18:16 UTC
Source filing: View source filing
Reporting owner signature: /s/ Waseem Shiraz, as Director of CQ Invest I LLC

Key filing fact

CQ Invest I LLC filed Form 3 for Quantinuum Inc. (QNT) on 04 Jun 2026.

Key facts

This page summarizes CQ Invest I LLC's Form 3 filing for Quantinuum Inc. (QNT).
0 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 04 Jun 2026, 19:18.

Change

No earlier filing in this sequence is available for direct comparison.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Official SEC source

Ownership activity is grounded in SEC Form 3 disclosures.

View source filing

Reporting Owners (4)

CIK 0002135669 Primary reporting owner

CQ Invest I LLC

Relationship: 10%+ Owner
Address: C/O CAMBRIDGE QUANTUM NORTH AMERICA, 1300 N 17TH STREET, SUITE 530, ARLINGTON
Signature: /s/ Waseem Shiraz, as Director of CQ Invest I LLC
Signature date: 04 Jun 2026

CIK 0002135683

Cambridge Quantum Holdings Ltd

Relationship: 10%+ Owner
Address: C/O CAMBRIDGE QUANTUM NORTH AMERICA, 1300 N 17TH STREET, SUITE 530, ARLINGTON
Signature: /s/ Waseem Shiraz, as Director of Cambridge Quantum Holdings Limited
Signature date: 04 Jun 2026

CIK 0001509509

Khan Ilyas

Relationship: 10%+ Owner
Address: C/O CAMBRIDGE QUANTUM NORTH AMERICA, 1300 N 17TH STREET, SUITE 530, ARLINGTON
Signature: Ilyas Khan, /s/ Waseem Shiraz, Waseem Shiraz, Attorney-in-Fact
Signature date: 04 Jun 2026

CIK 0002135670

Shiraz Waseem

Relationship: 10%+ Owner
Address: C/O CAMBRIDGE QUANTUM NORTH AMERICA, 1300 N 17TH STREET, SUITE 530, ARLINGTON
Signature: Waseem Shiraz, /s/ Waseem Shiraz
Signature date: 04 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QNT holding

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 82,884,823
Date: 04 Jun 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

QNT holding

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 82,884,823
Date: 04 Jun 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

QNT holding

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 82,884,823
Date: 04 Jun 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

QNT holding

Class B Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 82,884,823
Date: 04 Jun 2026
Ownership: See Footnotes
Footnotes: F1, F2, F3

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,511
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F4

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,511
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F4

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,511
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F4

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 480,511
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F4

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 27,001
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F5

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 27,001
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F5

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 27,001
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F5

QNT holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 27,001
Date: 04 Jun 2026
Ownership: Direct
Footnotes: F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

QNT holding Derivative

Common Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 04 Jun 2026
Ownership: See Footnotes
Underlying class: Class A Common Stock
Underlying amount: 82,884,823
Exercise price
Footnotes: F1, F2, F3

QNT holding Derivative

Common Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 04 Jun 2026
Ownership: See Footnotes
Underlying class: Class A Common Stock
Underlying amount: 82,884,823
Exercise price
Footnotes: F1, F2, F3

QNT holding Derivative

Common Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 04 Jun 2026
Ownership: See Footnotes
Underlying class: Class A Common Stock
Underlying amount: 82,884,823
Exercise price
Footnotes: F1, F2, F3

QNT holding Derivative

Common Units

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after
Date: 04 Jun 2026
Ownership: See Footnotes
Underlying class: Class A Common Stock
Underlying amount: 82,884,823
Exercise price
Footnotes: F1, F2, F3

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

Includes (i) 531,720 Common Units and a corresponding number of shares of Class B common stock held directly by CQ Invest I LLC and (ii) 82,353,103 Common Units and a corresponding number of shares of Class B common stock held directly by Cambridge Quantum Holdings Limited. Cambridge Quantum Holdings Limited is the administrative manager of CQ Invest I LLC, and has the right to manage, control and conduct the affairs and operations of CQ Invest I LLC. Cambridge Quantum Holdings Limited is managed by a board of directors, which is composed of Ilyas Khan and Waseem Shiraz, who have the power to vote or direct the vote of, and power to dispose or to direct the disposition of, the shares and units held by CQ Invest I LLC. Mr. Khan, including entities controlled by him, is the controlling shareholder of Cambridge Quantum Holdings Limited.

Footnote F2

Each of the Reporting Persons (other than to the extent it directly holds securities reported herein) disclaims beneficial ownership of the securities held by the other Reporting Persons, except to the extent of such Reporting Person's pecuniary interest therein, and, pursuant to Rule 16a-1(a)(4) under the Securities Exchange Act of 1934, each of the Reporting Persons (other than to the extent it directly holds securities reported herein) states that the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of all of the reported securities for purposes of Section 16 or for any other purpose.

Footnote F3

Each common unit of Quantinuum Holdings, LLC ("Common Unit") may be redeemed or exchanged for one share of Class A common stock of the Issuer (or, at the Issuer's election, cash). Common Units have no expiration date. Upon the redemption or exchange of Common Units, a number of shares of Class B common stock equal to the number of Common Units that are redeemed or exchanged will automatically be cancelled for no consideration.

Footnote F4

The reported securities are directly owned by Ilyas Khan in his personal capacity and the other Reporting Persons have no pecuniary interest in these securities. Includes 179,028 restricted shares units ("RSUs"), which will vest according to the terms of the award agreement. Each RSU represents a contingent right to receive one share of Class A common stock.

Footnote F5

The reported securities are directly owned by Waseem Shiraz in his personal capacity and the other Reporting Persons have no pecuniary interest in these securities. Includes 10,426 RSUs, which will vest according to the terms of the award agreement. Each RSU represents a contingent right to receive one share of Class A common stock.

SEC remarks

Exhibit 24 - Power of Attorney

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