Quantinuum (QNT) director Stepniak files initial insider Form 3 disclosure

Rhea-AI Filing Summary

Quantinuum Inc. director Michal Stepniak has filed an initial Form 3, which is the required statement of insider holdings when someone becomes a company insider. This filing reports no transactions and no specific shareholdings or derivative positions for Stepniak at this time.

Key Terms

Form 3, reporting insider, transaction summary

3 terms

Form 3 regulatory

"Form 3 shows that director Michal Stepniak has become a reporting insider"

Form 3 is the initial public filing that officers, directors and large shareholders must submit to report their ownership of a company’s securities when they become insiders. It acts like an opening inventory sheet that gives investors a starting point to see who holds significant stakes and to spot later trades or potential conflicts of interest, helping assess insider confidence and transparency.

reporting insider regulatory

"Form 3 shows that director Michal Stepniak has become a reporting insider"

transaction summary financial

"the transaction summary shows netBuySellShares of zero and a neutral direction"

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Available on EDGAR 06/10/2026 - 06:10 PM Accepted by SEC EDGAR 06/04/2026 - 07:17 PM Learn about SEC filing dates

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^*

Stepniak Michal

(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)
06/04/2026

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)

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

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)

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:

Remarks:

Exhibit 24 - Power of Attorney.

No securities are beneficially owned.

	/s/ Rajeeb Hazra, Attorney-in-Fact	06/04/2026
	** 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)

FAQ

What does Quantinuum (QNT) director Michal Stepniak’s Form 3 filing show?

The Form 3 shows that director Michal Stepniak has become a reporting insider of Quantinuum Inc. It reports no insider transactions, shareholdings, or derivative positions, serving purely as an initial registration of insider status.

Are there any buy or sell transactions in Quantinuum (QNT) director Stepniak’s Form 3?

No, the Form 3 for Michal Stepniak lists zero buy, sell, acquire, or dispose transactions. All transaction-related counts and share amounts are reported as zero, indicating this is a purely administrative initial ownership filing.

Does Quantinuum (QNT) director Stepniak report any options or derivatives on the Form 3?

No derivative positions are reported for Michal Stepniak in this Form 3. The derivative summary is empty and derivative transaction counts are zero, meaning no options, warrants, or other derivative securities are disclosed in this initial statement.

What is the purpose of this Quantinuum (QNT) Form 3 for director Stepniak?

This Form 3 establishes Michal Stepniak as a reporting person for Quantinuum Inc. Form 3 is the baseline disclosure required when someone becomes an insider, even when no actual share ownership or transactions are reported yet.

Does the Quantinuum (QNT) Form 3 indicate any net buying or selling by director Stepniak?

No, the transaction summary shows netBuySellShares of zero and a neutral net buy/sell direction. This confirms there has been no reported insider buying, selling, or other transaction activity associated with this Form 3 filing.