# EDGAR Filing Document

**Accession Number:** 0001848787
**File Stem:** 0001193125-26-054778
**Filing Date:** 2026-2
**Character Count:** 13486
**Document Hash:** d07af20a134c4aa14c40d8024458e43b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-054778.hdr.sgml**: 20260217

**ACCESSION NUMBER**: 0001193125-26-054778

**CONFORMED SUBMISSION TYPE**: 4

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260212

**FILED AS OF DATE**: 20260217

**DATE AS OF CHANGE**: 20260217

**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Klein Michael Stuart
- **CENTRAL INDEX KEY:** 0001327392

**ORGANIZATION NAME:**

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42646
- **FILM NUMBER:** 26642156

**MAIL ADDRESS:**
- **STREET 1:** C/O DAVIS POLK & WARDWELL
- **STREET 2:** 450 LEXINGTON AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** M. Klein Associates, Inc.
- **CENTRAL INDEX KEY:** 0001751504

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** NY
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42646
- **FILM NUMBER:** 26642154

**BUSINESS ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212-380-7500

**MAIL ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
**REPORTING-OWNER**: 

**OWNER DATA:**
- **COMPANY CONFORMED NAME:** Churchill Sponsor X LLC
- **CENTRAL INDEX KEY:** 0001848787

**ORGANIZATION NAME:**
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** 4
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42646
- **FILM NUMBER:** 26642155

**BUSINESS ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 212-380-7500

**MAIL ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE, 12TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
**ISSUER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Churchill Capital Corp X/Cayman
- **CENTRAL INDEX KEY:** 0002007825
- **STANDARD INDUSTRIAL CLASSIFICATION:** SERVICES-COMPUTER PROCESSING & DATA PREPARATION [7374]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 000000000
- **STATE OF INCORPORATION:** E9
- **FISCAL YEAR END:** 1231

**BUSINESS ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE 14TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019
- **BUSINESS PHONE:** 2123807500

**MAIL ADDRESS:**
- **STREET 1:** 640 FIFTH AVENUE 14TH FLOOR
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10019

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

## FORM 4

### STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

[x] 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**<sup>*</sup><br>Klein Michael Stuart<br><sub>(Last) (First) (Middle)</sub><br>640 FIFTH AVENUE, 14TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10019<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Churchill Capital Corp X/Cayman [ INFQ ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>Churchill Sponsor X LLC<br><sub>(Last) (First) (Middle)</sub><br>640 FIFTH AVENUE, 14TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10019<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Churchill Capital Corp X/Cayman [ INFQ ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

---

| | | |
|:---|:---|:---|
| **1. Name and Address of Reporting Person**<sup>*</sup><br>M. Klein Associates, Inc.<br><sub>(Last) (First) (Middle)</sub><br>640 FIFTH AVENUE, 14TH FLOOR<br><sub>(Street)</sub><br>NEW YORK, NY 10019<br><sub>(City) (State) (Zip)</sub> | **3. Date of Earliest Transaction (Month/Day/Year)**<br>2026-02-12 | **5. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[X] Director [X] 10% Owner<br>[X] Officer (give title below) [ ] Other (specify below)<br>_See Remarks_ |
| **2. Issuer Name and Ticker or Trading Symbol**<br>Churchill Capital Corp X/Cayman [ INFQ ] | **4. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[ ] Form filed by One Reporting Person<br>[X] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | 3. Transaction Code (V) | 3. Transaction Code (V) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 4. Securities Acquired (A) or Disposed of (D) | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| 1. Title of Security | 2. Transaction Date | 2A. Deemed Execution Date | Code | V | Amount | (A) or (D) | Price | 5. Amount of Securities Beneficially Owned | 6. Ownership Form | 7. Nature of Indirect Beneficial Ownership |
| Common Stock | 2026-02-12 |  | C |  | 10650000<sup>(1)(2)(3)(4)</sup> | A | <sup>(1)(2)(3)(4)</sup> | 10650000 | I | See footnote<sup>(5)</sup> |

---

## Table II - Derivative Securities

---

|  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | 4. Transaction Code (V) | 4. Transaction Code (V) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 5. Number of Derivative Securities Acquired (A) or Disposed of (D) | 6. Date Exercisable and Expiration Date | 6. Date Exercisable and Expiration Date | 7. Title and Amount of Underlying Securities | 7. Title and Amount of Underlying Securities | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | 2. Conversion or Exercise Price | 3. Transaction Date | 3A. Deemed Execution Date | Code | V | (A) | (D) | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 8. Price of Derivative Security | 9. Number of Derivative Securities Beneficially Owned | 10. Ownership Form | 11. Nature of Indirect Beneficial Ownership |
| Class B ordinary shares | <sup>(1)(2)(3)</sup> | 2026-02-12 |  | C |  |  | 10350000 | <sup>(1)(2)(3)</sup> | <sup>(1)(2)(3)</sup> | Common Stock | 10350000 | <sup>(1)(2)(3)</sup> | 0 | I<sup>(5)</sup> | See footnote<sup>(5)</sup> |
| Warrant (Right to Buy) | $11.5 | 2026-02-12 |  | J |  | 75000 |  | 2026-03-15 | 2031-02-13 | Common Stock | 75000 | <sup>(6)</sup> | 75000<sup>(6)</sup> | I | See footnote<sup>(5)</sup> |

---

### Footnotes:

(1) In connection with the transactions consummated on February 13, 2026 pursuant to that certain Agreement and Plan of Merger and Reorganization Agreement, dated as of September 8, 2025 (the "Merger Agreement"), by and among Infleqtion, Inc. (the "Issuer") (f/k/a Churchill Capital Corp X ("CCX")), AH Merger Sub I, Inc., a wholly owned subsidiary of the Issuer ("Merger Sub I"), AH Merger Sub II, LLC, a wholly owned subsidiary of the Issuer ("Merger Sub II") and ColdQuanta, Inc. (d/b/a Infleqtion), a Delaware corporation ("Legacy Infleqtion"). Pursuant to the Merger Agreement, and on the terms and subject to the satisfaction or waiver of the conditions set forth therein, the parties effected a business combination transaction by which Merger Sub I merged with and into the Legacy Infleqtion, with Legacy Infleqtion continuing as the surviving corporation and a wholly-owned subsidiary of the Issuer ("First Merger"),

(2) (Continued from footnote 1) and immediately following the First Merger, the surviving corporation of the First Merger merged with and into Merger Sub II, with Merger Sub II continuing as the surviving entity (the "Second Merger" and, together with the First Merger, the "Mergers").

(3) The Issuer effected a deregistration under Article 41 of CCX's amended and restated memorandum and articles of association and Section 206 of the Companies Act (As Revised) of the Cayman Islands and a domestication under Section 388 of the Delaware General Corporation Law, pursuant to which CCX's jurisdiction of incorporation changed from the Cayman Islands to the State of Delaware (the "Domestication"). Effective upon the Domestication, (i) each Class B ordinary share of the Issuer automatically converted into a Class A ordinary share (the "Class A Ordinary Share") on a one-to-one basis, and (ii) each Class A Ordinary Share converted into common stock, par value $0.0001 per share ("Common Stock"), of the Issuer, Infleqtion, Inc., on a one-to-one basis. The reporting person now holds Common Stock of the Issuer rather than Class A Ordinary Shares in a Cayman Islands company.

(4) Includes 300,000 shares which were acquired as part of 300,000 units pursuant to a Private Placement Units Purchase Agreement by and between the Churchill Sponsor X LLC (the "Sponsor") and CCX, and have been continually held since CCX's initial public offering. Effective upon the Domestication, (i) each unit of CCX separated into one share per unit and one-quarter of one whole warrant of CCX per unit, each whole warrant exercisable for one Class A Ordinary Share, (ii) each share converted into one share of Common Stock of the Issuer on a one-to-one basis and (iii) each warrant automatically converted into a warrant to acquire Common Stock of the Issuer.

(5) The reported shares and warrants of the Issuer are directly held by the Sponsor. Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor. The filing of this statement shall not be deemed to be an admission that, for purposes of Section 16 under the Securities Exchange Act of 1934, as amended, or otherwise, any of the Reporting Persons is the beneficial owner of any securities reported herein. The Reporting Persons disclaim beneficial ownership of any securities of the Issuer except to the extent of such Reporting Person's pecuniary interest therein.

(6) Represents 75,000 shares underlying warrants which were acquired as part of 300,000 units pursuant to a Private Placement Units Purchase Agreement by and between the Sponsor and CCX, and have been continually held since CCX's initial public offering. Effective upon the Domestication, (i) each unit of CCX separated into one share per unit and one-quarter of one whole warrant of CCX per unit, each whole warrant exercisable for one Class A Ordinary Share, (ii) each share converted into one share of Common Stock of the Issuer on a one-to-one basis and (iii) each warrant automatically converted into a warrant to acquire Common Stock of the Issuer. The warrants become exercisable 30 days after the completion of the Mergers.

**Remarks:**
Former Chief Executive Officer, President and Chairman of the Board of Directors of CCX.

**Signature:** /s/ Michael Klein  
**Date:** 2026-02-17

**Signature:** M. Klein Associates, Inc., By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person  
**Date:** 2026-02-17

**Signature:** Churchill Sponsor X LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person:  
**Date:** 2026-02-17

### Remarks:

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.**