Quantinuum Inc. (QNT) files Form 3 for 167,191 RSUs

Rhea-AI Filing Summary

Quantinuum Inc. Chief HR Officer Rory Gordon O'Byrne filed an initial statement of beneficial ownership reporting 167,191 restricted stock units (RSUs) linked to Class A Common Stock. Each RSU represents a contingent right to receive one share, vesting under the applicable grant agreement, and no buy or sell transactions are reported.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider O'Byrne Rory Gordon

Role Chief HR Officer

Type	Security	Shares	Price	Value
holding	Class A Common Stock F1	--	--	--

Holdings After Transaction: Class A Common Stock — 167,191 shares (Direct)

Footnotes (1)

1. F1. Represents restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of Class A Common Stock. The RSUs will vest according to the applicable grant agreement.

Key Figures

RSUs reported: 167,191 units Holding entries: 1 Buy transactions: 0

3 metrics

RSUs reported 167,191 units Initial Class A Common Stock RSU holding reported on Form 3

Holding entries 1 Single holding entry in the non-derivative table

Buy transactions 0 Transaction summary shows no buy transactions reported

Key Terms

restricted stock units, contingent right, Class A Common Stock

3 terms

restricted stock units financial

"Represents restricted stock units ("RSUs"), each of which represents"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

contingent right financial

"each of which represents a contingent right to receive one share"

Class A Common Stock financial

"to receive one share of Class A Common Stock. The RSUs will vest"

Class A common stock is a category of a company’s shares that carries a specific set of ownership rights—most commonly defined voting power and claims on dividends—set out in the company’s charter. For investors it matters because the class determines how much influence you have over corporate decisions, the share’s likely dividend and trading behavior, and how it compares in value to other share classes, like choosing a particular seat with different privileges at the company’s decision-making table.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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FAQ

What insider position is reported for Quantinuum Inc. (QNT) in this Form 3?

The Form 3 shows Quantinuum Inc.'s Chief HR Officer, Rory Gordon O'Byrne, holding 167,191 restricted stock units (RSUs) tied to Class A Common Stock as an initial beneficial ownership position, with no buy or sell transactions disclosed.

How many RSUs does the Quantinuum Inc. (QNT) insider beneficially own?

Rory Gordon O'Byrne beneficially owns 167,191 RSUs. Each RSU represents a contingent right to receive one share of Quantinuum Inc. Class A Common Stock, with vesting to occur according to the applicable grant agreement terms.

What does the RSU footnote mean in Quantinuum Inc. (QNT)'s Form 3?

The footnote explains that the reported holdings are restricted stock units (RSUs), each giving a contingent right to one share of Class A Common Stock. These RSUs will vest in line with the specific grant agreement governing the award.

Were any buy or sell transactions reported for Quantinuum Inc. (QNT) in this Form 3?

No. The Form 3 discloses no purchase or sale transactions. It records a single holding entry reflecting 167,191 RSUs as the insider's initial beneficial ownership position in Quantinuum Inc.'s Class A Common Stock.

Which role does the reporting person hold at Quantinuum Inc. (QNT)?

The reporting person, Rory Gordon O'Byrne, serves as Chief HR Officer of Quantinuum Inc. The Form 3 links this executive role to an initial beneficial ownership position consisting entirely of restricted stock units tied to Class A Common Stock.

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

O'Byrne Rory Gordon

(Last) (First) (Middle)

C/O QUANTINUUM INC.

303 S TECHNOLOGY COURT

(Street)

BROOMFIELD COLORADO 80021

(City) (State) (Zip)

UNITED STATES

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
07/17/2026

3. Issuer Name and Ticker or Trading Symbol
Quantinuum Inc. [ QNT ]

3a. Foreign Trading Symbol

5. If Amendment, Date of Original Filed (Month/Day/Year)

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief HR Officer

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class A Common Stock	167,191(1)	D

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents restricted stock units ("RSUs"), each of which represents a contingent right to receive one share of Class A Common Stock. The RSUs will vest according to the applicable grant agreement.

Remarks:

Exhibit 24 - Power of Attorney.

	/s/ Robin Schulman, Attorney-in-Fact	07/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 3: SEC 1473 (03-26)