Quantinuum (QNT) CSO adds 126,460-share stake via grant and open-market buy

Rhea-AI Filing Summary

Quantinuum Inc. Chief Strategy Officer Kevin Scott Dehoff increased his direct stake in Class A Common Stock through both a grant and a market purchase. On June 3, 2026, he acquired 111,460 restricted shares in connection with a recapitalization transaction at a stated price of $0.00 per share. On June 5, 2026, he made an open-market purchase of an additional 15,000 shares at $60.00 per share. Following these transactions, Dehoff directly owns 126,460 Class A shares, aligning his interests more closely with shareholders ahead of the company’s initial public offering.

Insider Trade Summary

Net Buyer: 15,000 shares ($900,000)

Net Buy 2 txns

Insider Dehoff Kevin Scott

Role Chief Strategy Officer

Bought 15,000 shs ($900K)

Type	Security	Shares	Price	Value
Purchase	Class A Common Stock	15,000	$60.00	$900K
Grant/Award	Class A Common Stock	111,460	$0.00	--

Holdings After Transaction: Class A Common Stock — 126,460 shares (Direct, null)

Footnotes (1)

1. This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a). Represents an acquisition of restricted shares of Class A Common Stock pursuant to a recapitalization transaction.

Key Figures

Open-market purchase: 15,000 shares Purchase price: $60.00 per share Restricted share grant: 111,460 shares +1 more

4 metrics

Open-market purchase 15,000 shares Class A Common Stock bought at $60.00 per share on June 5, 2026

Purchase price $60.00 per share Open-market purchase of 15,000 Class A shares

Restricted share grant 111,460 shares Acquisition of restricted Class A shares in recapitalization on June 3, 2026

Post-transaction holdings 126,460 shares Total direct Class A Common Stock owned after transactions

Key Terms

open-market purchase, restricted shares, recapitalization transaction, initial public offering, +2 more

6 terms

open-market purchase financial

"transaction_action: "open-market purchase" for 15,000 shares at $60.0000"

An open-market purchase is when an investor or a company buys shares on a public stock exchange at the going market price, rather than through a private deal. It matters to investors because these purchases change how many shares are available, can push the stock price up or signal confidence from large buyers, and often affect per-share metrics like earnings—think of it like someone buying lots of apples off a grocery shelf, reducing supply and potentially raising the price.

restricted shares financial

"Represents an acquisition of restricted shares of Class A Common Stock"

Restricted shares are company stock that cannot be sold or transferred immediately because they are subject to legal or contractual limits, such as a required holding period or performance conditions. They matter to investors because these locked-up shares can affect a company’s available stock for trading, future dilution, and insider incentives—imagine a gift that can’t be cashed until certain conditions are met, which changes when and how much supply can suddenly enter the market.

recapitalization transaction financial

"restricted shares of Class A Common Stock pursuant to a recapitalization transaction"

A recapitalization transaction is a deliberate change to a company’s mix of debt and equity—for example swapping loans for new shares, paying down debt with cash, or issuing bonds—intended to strengthen the balance sheet or alter financial risk. Investors care because it can change the company’s ability to grow, pay dividends, or survive downturns; like reorganizing a household budget, it shifts who bears risk and how future returns are split.

initial public offering financial

"in connection with the Issuer's initial public offering"

An initial public offering (IPO) is when a private company first sells its shares to the public and becomes a stock-listed company. It matters because it allows the company to raise money from a wide range of investors, helping it grow, while giving early shareholders a way to sell some of their ownership.

Rule 16a-2(a) regulatory

"reported herein pursuant to Rule 16a-2(a)"

Section 12 of the Securities Exchange Act of 1934 regulatory

"registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934"

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Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Dehoff Kevin Scott

(Last) (First) (Middle)

C/O QUANTINUUM INC.

303 S TECHNOLOGY COURT

(Street)

BROOMFIELD COLORADO 80021

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/03/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	06/03/2026(1)		A		111,460	A	(2)	111,460	D
Class A Common Stock	06/05/2026		P		15,000	A	$60	126,460	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This transaction occurred prior to the Issuer's registration of a class of equity securities under Section 12 of the Securities Exchange Act of 1934, as amended, in connection with the Issuer's initial public offering, and is reported herein pursuant to Rule 16a-2(a).

2. Represents an acquisition of restricted shares of Class A Common Stock pursuant to a recapitalization transaction.

Remarks:

	/s/ Rajeeb Hazra, Attorney-in-Fact	06/08/2026
	** 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 4 (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 4: SEC 1474 (03-26)

FAQ

What insider transactions did Quantinuum (QNT) Chief Strategy Officer Kevin Dehoff report?

Kevin Dehoff reported two transactions involving Quantinuum Class A Common Stock. He received 111,460 restricted shares in a recapitalization transaction and separately bought 15,000 shares in the open market at $60.00 per share, increasing his direct ownership to 126,460 shares.

How many Quantinuum (QNT) shares did Kevin Dehoff buy on the open market?

Kevin Dehoff purchased 15,000 shares of Quantinuum Class A Common Stock in an open-market transaction. The shares were bought at a price of $60.00 per share, representing a direct cash investment in the company’s stock alongside his equity grant.

What was the size of Kevin Dehoff’s equity grant in Quantinuum (QNT)?

Kevin Dehoff was granted 111,460 restricted shares of Quantinuum Class A Common Stock. The grant occurred in connection with a recapitalization transaction and was reported at a stated price of $0.00 per share, reflecting a non-cash equity award to the executive.

How many Quantinuum (QNT) shares does Kevin Dehoff own after these transactions?

After the reported transactions, Kevin Dehoff directly owns 126,460 shares of Quantinuum Class A Common Stock. This total reflects both the 111,460 restricted shares granted and the subsequent open-market purchase of 15,000 additional shares at $60.00 per share.

Were Kevin Dehoff’s Quantinuum (QNT) transactions related to the IPO process?

One transaction occurred prior to Quantinuum registering a class of equity securities in connection with its initial public offering and was reported under Rule 16a-2(a). The 111,460-share grant was tied to a recapitalization transaction involving restricted Class A shares.