# EDGAR Filing Document

**Accession Number:** 0002110105
**File Stem:** 0001628280-26-040591
**Filing Date:** 2026-6
**Character Count:** 16290
**Document Hash:** a651b5ff4eef2a5cdb8b146bdea7b3c4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-040591.hdr.sgml**: 20260603

**ACCESSION NUMBER**: 0001628280-26-040591

**CONFORMED SUBMISSION TYPE**: S-1MEF

**PUBLIC DOCUMENT COUNT**: 12

**FILED AS OF DATE**: 20260603

**DATE AS OF CHANGE**: 20260603

**EFFECTIVENESS DATE**: 20260603

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Quantinuum Inc.
- **CENTRAL INDEX KEY:** 0002110105
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER INTEGRATED SYSTEMS DESIGN [7373]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** S-1MEF
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-296475
- **FILM NUMBER:** 261062824

**BUSINESS ADDRESS:**
- **STREET 1:** 303 S TECHNOLOGY COURT
- **CITY:** BROOMFIELD
- **STATE:** CO
- **BUSINESS PHONE:** (855) 888-7686

**MAIL ADDRESS:**
- **STREET 1:** 303 S TECHNOLOGY COURT
- **CITY:** BROOMFIELD
- **STATE:** CO

**As filed with the U.S. Securities and Exchange Commission on June 3, 2026.**

**Registration No. 333-**

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**FORM S-1**

**REGISTRATION STATEMENT**

***UNDER***

***THE SECURITIES ACT OF 1933***

**Quantinuum Inc.**

**(Exact name of registrant as specified in its charter)**

---

| | | |
|:---|:---|:---|
| **Delaware** | **7373** | **41-4095842** |
| **(State or other jurisdiction of**<br>**incorporation or organization)** | **(Primary Standard Industrial**<br>**Classification Code Number)** | **(I.R.S. Employer<br>Identification Number)** |

---

**303 S Technology Court**

**Broomfield, CO 80021**

**(855) 888-7686**

**(Address, including zip code, and telephone number, including area code, of registrant's principal executive offices)**

**Dr. Rajeeb Hazra**

**Chief Executive Officer**

**303 S Technology Court**

**Broomfield, CO 80021** 

**(855) 888-7686**

**(Name, address, including zip code, and telephone number, including area code, of agent for service)**

***Copies to:***

---

| | |
|:---|:---|
| **Ryan J. Maierson**<br>**Cathy A. Birkeland**<br>**Max Schleusener** <br>**Abigail Smith**<br>**Latham & Watkins LLP**<br>**811 Main Street, Suite 3700**<br>**Houston, Texas 77002**<br>**(713) 546-5400** | **John B. Meade**<br>**Yasin Keshvargar**<br>**Claudia Carvajal Lopez**<br>**Davis Polk & Wardwell LLP**<br>**450 Lexington Avenue**<br>**New York, NY 10017**<br>**(212) 450-4000** |

---

**Approximate date of commencement of proposed sale to the public:** As soon as practicable after the effective date of this Registration Statement.

If any of the securities being registered on this Form are to be offered on a delayed or continuous basis pursuant to Rule 415 under the Securities Act of 1933, check the following box. □

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, please check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. ☒ (File No. 333-295701)

If this Form is a post-effective amendment filed pursuant to Rule 462(c) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. □

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. □

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company or an emerging growth company. See the definitions of "large accelerated filer," "accelerated filer," "smaller reporting company" and "emerging growth company" in Rule 12b-2 of the Exchange Act.

---

| | | | |
|:---|:---|:---|:---|
| Large accelerated filer | ☐ | Accelerated filer | ☐ |
| Non-accelerated filer | ☒ | Smaller reporting company | ☒ |
| | | Emerging growth company | ☒ |

---

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 7(a)(2)(B) of the Securities Act. □

**This Registration Statement shall become effective upon filing with the Securities and Exchange Commission in accordance with Rule 462(b) promulgated under the Securities Act of 1933, as amended.**

------

**EXPLANATORY NOTE AND INCORPORATION OF CERTAIN INFORMATION BY REFERENCE**

Quantinuum Inc., a Delaware corporation, is filing this registration statement with the Securities and Exchange Commission (the "Commission") pursuant to Rule 462(b) under the Securities Act of 1933, as amended. This registration statement relates to the registrant's prior registration statement on Form S-1 (File No. 333-295701), as amended (together with its exhibits, the "Prior Registration Statement"), which was declared effective by the Commission on June 3, 2026.

The registrant is filing this registration statement for the sole purpose of registering the sale of an additional 1,725,000 shares of the registrant's Class A common stock, which includes 225,000 shares of Class A common stock that may be sold as part of the underwriters' option to purchase additional shares. The additional shares that are being registered for sale are in an amount and at a price that together represent no more than 20% of the maximum aggregate offering price set forth in the filing fee table filed as Exhibit 107 to the Prior Registration Statement. The contents of the Prior Registration Statement, including all amendments and exhibits thereto, are incorporated by reference herein.

The required opinion and consents are listed in Part II, Item 16 of this registration statement and filed herewith.

------

**PART II**

**INFORMATION NOT REQUIRED IN PROSPECTUS**

**Item 16. Exhibits.**

The following documents are filed as exhibits to this registration statement, and all other exhibits previously filed as exhibits to the Prior Registration Statement are incorporated by reference into, and shall be deemed to be a part of, this filing.

**EXHIBIT INDEX**

---

| | |
|:---|:---|
| **Exhibit Number** | **Exhibit Description** |
| 5.1\*\* | <u>[Opinion of Latham & Watkins LLP.](https://www.sec.gov/Archives/edgar/data/2110105/000162828026039286/exhibit51-sx1a2.htm)</u> |
| 23.1 | <u>[Consent of Deloitte & Touche LLP, as to Quantinuum](exhibit231-sx1mef.htm)[and Quantinuum Inc](exhibit231-sx1mef.htm)[.](exhibit231-sx1mef.htm)</u> |
| 23.2\*\* | <u>[Consent of Latham & Watkins LLP (contained in its opinion filed as Exhibit 5.1 hereto).](https://www.sec.gov/Archives/edgar/data/2110105/000162828026039286/exhibit51-sx1a2.htm)</u> |
| 24.1\*\* | <u>[Power of Attorney (included on the signature page of the](https://www.sec.gov/Archives/edgar/data/2110105/000162828026037917/quantinuum-sx1a.htm#i03a7bd5f05c54ce489e06e2b650a474a_222)[Prior](https://www.sec.gov/Archives/edgar/data/2110105/000162828026037917/quantinuum-sx1a.htm#i03a7bd5f05c54ce489e06e2b650a474a_222)[Registration Statement).](https://www.sec.gov/Archives/edgar/data/2110105/000162828026037917/quantinuum-sx1a.htm#i03a7bd5f05c54ce489e06e2b650a474a_222)</u> |
| 107 | <u>[Filing Fee Table.](qntms1meffilingfees060326.htm)</u> |

---

__________________

\*\*Previously filed with the Registrant's Registration Statement on Form S-1 (File No. 333-295701) filed with the Securities and Exchange Commission on June 1, 2026, the amended version of which is incorporated by reference herein.

------

**SIGNATURES**

Pursuant to the requirements of the Securities Act of 1933, as amended, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Broomfield, State of Colorado, on June 3, 2026.

---

| | |
|:---|:---|
| QUANTINUUM INC. | QUANTINUUM INC. |
| By:  | /s/ Dr. Rajeeb Hazra |
|  | Dr. Rajeeb Hazra |
|  | *President, Chief Executive Officer and Director* |

---

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the dates indicated.

---

| | | |
|:---|:---|:---|
| **Signature** | **Title** | **Date** |
| /s/ Dr. Rajeeb Hazra | President, Chief Executive Officer and Director<br>(Principal Executive Officer) | June 3, 2026 |
| Dr. Rajeeb Hazra | President, Chief Executive Officer and Director<br>(Principal Executive Officer) | June 3, 2026 |
| \* | Chief Financial Officer<br>(Principal Financial Officer and Principal Accounting Officer) | June 3, 2026 |
| Nitesh Sharan | Chief Financial Officer<br>(Principal Financial Officer and Principal Accounting Officer) | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Dr. Harold Barron | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Manish Bhatia | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Eric Branderiz | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Paul Daugherty | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Kenneth Denman | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Joseph Jimenez, Jr. | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Vimal Kapur | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Dr. Prineha Narang | Director | June 3, 2026 |
| \* | Director | June 3, 2026 |
| Michal Stepniak | Director | June 3, 2026 |
| \*By: <u>/s/ Dr. Rajeeb Hazra&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</u> |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Name: Dr. Rajeeb Hazra |  |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Title: Attorney-in-fact |  |  |

---

## Ex-Filing

?xml version='1.0' encoding='ASCII'? EX-FILING FEES

---

| |
|:---|
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Calculation of Filing Fee Tables**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **S-1**  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Quantinuum Inc.**  |

---

---

| | | | | | | | | | |
|:---|:---|:---|:---|:---|:---|:---|:---|:---|:---|
| | | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Type**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Security Class Title**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Calculation or Carry Forward Rule**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount Registered**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Proposed Maximum Offering Price Per Unit**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Maximum Aggregate Offering Price**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Fee Rate**  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Amount of Registration Fee**  |
| **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** | **Newly Registered Securities** |
| Fees to be Paid | 1 | Equity | Class A Common Stock, $0.0001 par value per share | 457(a) | 1725000 | $60.00 | $103500000.00 | 0.0001381 | $14293.35 |
| Fees Previously Paid |  |  |  |  |  |  |  |  |  |
| **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** | **Carry Forward Securities** |
| Carry Forward Securities |  |  |  |  |  |  |  |  |  |
|  |  |  | Total Offering Amounts: | Total Offering Amounts: | Total Offering Amounts: |  | $103500000.00  |  | $14293.35  |
|  |  |  | Total Fees Previously Paid:  | Total Fees Previously Paid:  | Total Fees Previously Paid:  |  |  |  | $0.00  |
|  |  |  | Total Fee Offsets:  | Total Fee Offsets:  | Total Fee Offsets:  |  |  |  | $0.00  |
|  |  |  | Net Fee Due:  | Net Fee Due:  | Net Fee Due:  |  |  |  | $14293.35  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; **Offering Note** <br>

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <sup>1</sup> (a) Estimated solely for the purpose of computing the amount of the registration fee pursuant to Rule 457(a) under the Securities Act of 1933, as amended. The Registrant previously paid an aggregate filing fee of $231,472.86 for the Registration Statement on Form S-1, as amended (File No. 333-295701). In accordance with Rule 462(b) under the Securities Act of 1933, as amended, an additional amount of securities having a proposed maximum offering price per unit of $60.00 are hereby registered, which includes the additional shares that the underwriters have the option to purchase. (b) Represents only the additional number of shares of Class A common stock being registered and includes additional shares of Class A common stock that the underwriters have the option to purchase. Does not include the securities that the Registrant previously registered on the Registration Statement on Form S-1, as amended (File No. 333-295701).

---

| |
|:---|
| |
| **Rules 457(b) and 0-11(a)(2)** |
| Fee Offset Claims |
| Fee Offset Sources |
| **Rule 457(p)** |
| Fee Offset Claims |
| Fee Offset Sources |

---

## Exhibit 23.1

**Exhibit 23.1**

**CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM**

We consent to the incorporation by reference in this Registration Statement on Form S-1:

–of our report dated May 26, 2026, relating to the financial statements of Quantinuum Inc., and

–of our report dated March 30, 2026, relating to the financial statements of Quantinuum,

appearing in the Registration Statement No. 333-295701 on Form S-1 of Quantinuum Inc

/s/ Deloitte & Touche LLP

Charlotte, North Carolina

June 3, 2026

<br>