STOCK TITAN

Quantinuum Inc. (QNT) director purchases 13,333 Class A shares in open market

Filing Impact
(High)
Filing Sentiment
(Positive)
Form Type
4

Rhea-AI Filing Summary

Quantinuum Inc. director Michal Stepniak reported an open-market purchase of Class A Common Stock. On June 5, he bought 13,333 shares at a price of $60.00 per share and now holds 13,333 shares directly following this transaction.

Positive

  • None.

Negative

  • None.
Insider Stepniak Michal
Role null
Bought 13,333 shs ($800K)
Type Security Shares Price Value
Purchase Class A Common Stock 13,333 $60.00 $800K
Holdings After Transaction: Class A Common Stock — 13,333 shares (Direct, null)
Footnotes (1)
Shares purchased 13,333 shares Open-market buy of Class A Common Stock on June 5, 2026
Purchase price $60.00 per share Price paid for Quantinuum Class A Common Stock
Shares owned after transaction 13,333 shares Direct holdings following the reported buy
Net buy shares 13,333 shares Net buy direction from transaction summary
Class A Common Stock financial
"security_title: "Class A Common Stock""
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.
open-market purchase financial
"transaction_action: "open-market purchase""
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.
Form 4 regulatory
"INSIDER FILING DATA (Form 4)"
Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.
non-derivative financial
"transaction_type: "non-derivative""
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SEC Form 4
FORM 4UNITED 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*
Stepniak Michal

(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)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
06/05/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm 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)
CodeVAmount(A) or (D)Price
Class A Common Stock06/05/2026P13,333A$6013,333D
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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Explanation of Responses:
Remarks:
/s/ Rajeeb Hazra, Attorney-in-Fact06/08/2026
** Signature of Reporting PersonDate
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 transaction did Quantinuum Inc. (QNT) report for Michal Stepniak?

Quantinuum Inc. reported that director Michal Stepniak made an open-market purchase of its Class A Common Stock. He bought 13,333 shares at $60.00 per share and now directly holds 13,333 shares after this single reported transaction.

How many Quantinuum Inc. (QNT) shares did Michal Stepniak buy and at what price?

Director Michal Stepniak bought 13,333 shares of Quantinuum Inc. Class A Common Stock. The reported transaction price was $60.00 per share in an open-market purchase, and these shares represent his entire directly held position after the trade.

Is the Quantinuum Inc. (QNT) Form 4 transaction a buy or a sell?

The Quantinuum Inc. Form 4 shows a buy transaction. Director Michal Stepniak executed an open-market purchase of 13,333 Class A Common shares at $60.00 per share, with no reported sales or derivative exercises in this filing.

How many Quantinuum Inc. (QNT) shares does Michal Stepniak own after this Form 4?

After the reported transaction, director Michal Stepniak owns 13,333 Quantinuum Inc. Class A Common shares directly. This holding amount matches the shares purchased in the open-market buy disclosed in the Form 4 and reflects his post-transaction position.

Does the Quantinuum Inc. (QNT) Form 4 show any derivative or option activity?

The Form 4 for Quantinuum Inc. does not show any derivative or option activity. It reports only a single non-derivative transaction: an open-market purchase of 13,333 Class A Common shares by director Michal Stepniak at $60.00 per share.