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Honeywell (NASDAQ: HON) reports 124.6M-unit indirect stake in Quantinuum

Filing Impact
(Neutral)
Filing Sentiment
(Neutral)
Form Type
3

Rhea-AI Filing Summary

Quantinuum Inc. reported an initial ownership filing showing large indirect stakes held by Honeywell International Inc. and its subsidiary Honeywell Holdings International Inc. as ten percent owners. Together they hold 124,628,729 Common Units of Quantinuum Holdings, LLC and a corresponding number of shares of Class B common stock.

According to the filing, Honeywell International Inc. holds 95,998,655 Common Units and matching Class B shares, while Honeywell Holdings International Inc. holds 28,630,074 Common Units and matching Class B shares. Each Common Unit may be redeemed or exchanged for one share of Class A common stock of Quantinuum Inc., or cash at the issuer’s election, and the units have no expiration date.

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Insider HONEYWELL INTERNATIONAL INC, Honeywell Holdings International Inc.
Role null | null
Type Security Shares Price Value
holding Common Units -- -- --
holding Class B Common Stock -- -- --
Holdings After Transaction: Common Units — 124,628,729 shares (Indirect, See Footnotes); Class B Common Stock — 124,628,729 shares (Indirect, See Footnotes)
Footnotes (1)
  1. Includes (i) 28,630,074 common units of Quantinuum Holdings, LLC ("Common Units") and a corresponding number of shares of Class B common stock of Quantinuum Inc. held directly by Honeywell Holdings International Inc. and (ii) 95,998,655 Common Units and a corresponding number of shares of Class B common stock of Quantinuum Inc. held directly by Honeywell International Inc. ("Honeywell"). Honeywell Holdings International Inc. is a wholly owned subsidiary of Honeywell, which is a publicly traded company with securities listed on The Nasdaq Stock Market LLC. Each 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). The 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.
Total Common Units and Class B shares 124,628,729 units/shares Indirect holdings reported across Honeywell entities
Honeywell International Inc. holdings 95,998,655 units/shares Common Units and corresponding Class B shares held directly
Honeywell Holdings International Inc. holdings 28,630,074 units/shares Common Units and corresponding Class B shares held directly
Redemption ratio 1 Common Unit : 1 Class A share Each Common Unit redeemable or exchangeable into one Class A share
Common Unit expiration No expiration date Common Units described as having no expiration
Exercise price of Common Units $0.0000 per unit Conversion or exercise price field in derivative summary
Common Units financial
"Includes (i) 28,630,074 common units of Quantinuum Holdings, LLC ("Common Units")"
Common units are the basic ownership stakes in a company, limited partnership, or trust that function like common stock: they give holders a claim on profits and often voting rights. Think of them as the ordinary seats at a table—the most directly affected by the business’s success or failure, so they typically offer higher upside but carry greater risk than preferred claims or creditors, which matters to investors evaluating potential return and safety.
Class B common stock financial
"and a corresponding number of shares of Class B common stock of Quantinuum Inc."
A class B common stock is one of multiple types of a company’s ordinary shares that carries specific rights—often different voting power or dividend priority—compared with other classes. For investors it matters because those differences affect how much influence you have over company decisions, the income you might receive, and how freely the shares trade; think of it like owning a car with different keys: some keys let you start the engine and open the trunk, others only unlock the door.
ten percent owner regulatory
"reporting persons are marked as is_ten_percent_owner: 1"
redeemed or exchanged financial
"Each Common Unit may be redeemed or exchanged for one share of Class A common stock"
no expiration date financial
"The Common Units have no expiration date."
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FAQ

What does Honeywell’s Form 3 filing reveal about its stake in Quantinuum Inc. (HON)?

The Form 3 shows Honeywell and a subsidiary collectively hold 124,628,729 Common Units and corresponding Class B shares in Quantinuum. This establishes them as ten percent owners and clarifies the structure of their indirect ownership through Quantinuum Holdings, LLC.

How many Quantinuum securities does Honeywell International Inc. hold according to the Form 3?

Honeywell International Inc. holds 95,998,655 Common Units of Quantinuum Holdings, LLC and an equal number of Quantinuum Class B common shares. These securities are held indirectly and form the larger portion of Honeywell’s disclosed ownership position in Quantinuum.

What is held by Honeywell Holdings International Inc. in the Quantinuum (QNT) Form 3?

Honeywell Holdings International Inc. holds 28,630,074 Common Units of Quantinuum Holdings, LLC and the same number of Quantinuum Class B common shares. It is a wholly owned subsidiary of Honeywell International Inc., and its holdings are part of Honeywell’s overall indirect stake.

Can Quantinuum Common Units disclosed in the Form 3 be converted into Class A common stock?

Yes. Each Common Unit may be redeemed or exchanged for one share of Quantinuum Class A common stock, or cash at the issuer’s election. When units are redeemed or exchanged, an equal number of associated Class B shares are automatically cancelled for no consideration.

Do the Quantinuum Common Units held by Honeywell have an expiration date?

The filing states the Common Units have no expiration date. This means Honeywell’s ability to redeem or exchange units for Class A common stock or cash is not limited by a maturity, providing ongoing optionality under the described terms.

Why are Honeywell and its subsidiary identified as ten percent owners of Quantinuum Inc.?

They are identified as ten percent owners because their combined holdings of 124,628,729 Common Units and corresponding Class B shares represent a significant ownership stake. Form 3 is used to disclose such positions when they cross regulatory reporting thresholds.
SEC Form 3
FORM 3UNITED 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*
HONEYWELL INTERNATIONAL INC

(Last)(First)(Middle)
855 S. MINT STREET

(Street)
CHARLOTTE NORTH CAROLINA 28202

(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)
DirectorX10% Owner
Officer (give title below)Other (specify below)
6. Individual or Joint/Group Filing (Check Applicable Line)
Form filed by One Reporting Person
XForm 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 B Common Stock124,628,729ISee Footnotes(1)(2)
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 ExercisableExpiration DateTitleAmount or Number of Shares
Common Units (3) (3)Class A Common Stock124,628,729(3)ISee Footnotes(1)(2)
1. Name and Address of Reporting Person*
HONEYWELL INTERNATIONAL INC

(Last)(First)(Middle)
855 S. MINT STREET

(Street)
CHARLOTTE NORTH CAROLINA 28202

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
1. Name and Address of Reporting Person*
Honeywell Holdings International Inc.

(Last)(First)(Middle)
C/O HONEYWELL INTERNATIONAL INC.
855 S. MINT STREET

(Street)
CHARLOTTE NORTH CAROLINA 28202

(City)(State)(Zip)

UNITED STATES

(Country)

Relationship of Reporting Person(s) to Issuer
DirectorX10% Owner
Officer (give title below)Other (specify below)
Explanation of Responses:
1. Includes (i) 28,630,074 common units of Quantinuum Holdings, LLC ("Common Units") and a corresponding number of shares of Class B common stock of Quantinuum Inc. held directly by Honeywell Holdings International Inc. and (ii) 95,998,655 Common Units and a corresponding number of shares of Class B common stock of Quantinuum Inc. held directly by Honeywell International Inc. ("Honeywell").
2. Honeywell Holdings International Inc. is a wholly owned subsidiary of Honeywell, which is a publicly traded company with securities listed on The Nasdaq Stock Market LLC.
3. Each 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). The 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.
Remarks:
Honeywell International Inc., /s/ Jimmy Steinberg, Senior Vice President, Corporate Development and Global Head of M&A06/04/2026
Honeywell Holdings International Inc., /s/ Jake Wasserman, Secretary06/04/2026
** 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 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)