# EDGAR Filing Document

**Accession Number:** 0002007825
**File Stem:** 0001193125-26-054801
**Filing Date:** 2026-2
**Character Count:** 14438
**Document Hash:** 429903732a7499b2270dfdd4a28eb9b4
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-054801.hdr.sgml**: 20260217

**ACCESSION NUMBER**: 0001193125-26-054801

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260217

**DATE AS OF CHANGE**: 20260217

**SUBJECT COMPANY**: 

**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

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-95044
- **FILM NUMBER:** 26642120

**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
**FILED BY**: 

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

**ORGANIZATION NAME:**
- **EIN:** 861946609
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**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

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

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 2)**

**Infleqtion, Inc.**

*(Name of Issuer)*

**Common Stock, $0.0001 par value**

*(Title of Class of Securities)*

**45676K103**

*(CUSIP Number)*

**Jay Taragin**<br>640 Fifth Avenue, 14th Floor<br>New York NY 10019<br>(212) 380-7500

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**02/12/2026**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **45676K103** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Churchill Sponsor X LLC** | Name of reporting person<br>**Churchill Sponsor X LLC** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**WC** | Source of funds (See Instructions)<br>**WC** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**DELAWARE** | Citizenship or place of organization<br>**DELAWARE** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**10725000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**10725000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**0.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.9%** | Percent of class represented by amount in Row (11)<br>**4.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (1)  Includes (i) 10,650,000 shares of the Issuer's common stock, $0.0001 par value ("Common Stock") and (ii) 75,000 shares of Common Stock underlying private placement warrants of the Issuer ("Warrants"). Michael Klein, the former Chief Executive Officer and Director of the Issuer, is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of Churchill Sponsor X LLC (the "Sponsor"), and accordingly Mr. Klein may be deemed to have beneficial ownership of securities reported herein. Mr. Klein disclaims any ownership of securities reported herein other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

| **CUSIP No.** | **45676K103** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**M. Klein Associates, Inc.** | Name of reporting person<br>**M. Klein Associates, Inc.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**NEW YORK** | Citizenship or place of organization<br>**NEW YORK** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**10725000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**10725000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.9%** | Percent of class represented by amount in Row (11)<br>**4.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**OO** | Type of Reporting Person (See Instructions)<br>**OO** | |

---

**Comment for Reporting Person:** (1)  Includes (i) 10,650,000.00 shares of Common Stock and (ii) 75,000 shares of Common Stock underlying the Warrants. Michael Klein, the former Chief Executive Officer and Director of the Issuer, is the controlling shareholder of M. Klein Associates, Inc., which is the managing member of the Sponsor, and accordingly Mr. Klein may be deemed to have beneficial ownership of securities reported herein. Mr. Klein disclaims any ownership of securities reported herein other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

| **CUSIP No.** | **45676K103** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Michael Klein** | Name of reporting person<br>**Michael Klein** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X1** | Citizenship or place of organization<br>**X1** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**10725000.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**10725000.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | Aggregate amount beneficially owned by each reporting person<br>**10725000.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**4.9%** | Percent of class represented by amount in Row (11)<br>**4.9%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Comment for Reporting Person:** (1)  Includes (i) 10,650,000.00 shares of Common Stock and (ii) 75,000 shares of Common Stock underlying the Warrants. Michael Klein, the former Chief Executive Officer and Director of the Issuer, is the controlling shareholder of M. Klein Associates, Inc., which is the managing member of the Sponsor, and accordingly Mr. Klein may be deemed to have beneficial ownership of securities reported herein. Mr. Klein disclaims any ownership of securities reported herein other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock, $0.0001 par value

**(b) Name of Issuer:**
Infleqtion, Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1315 West Century Drive, Suite 150, Louisville, CO, 80027

The following constitutes Amendment No. 2 ("Amendment No. 2") to the Schedule 13D filed with the Securities and Exchange Commission on May 21, 2025 (the "Initial 13D"), as previously amended by Amendment No. 1 ("Amendment No. 1") on September 11, 2025  (collectively, the "Schedule 13D") by Churchill Sponsor X LLC, a Delaware limited liability company (the "Sponsor"), M. Klein Associates, Inc. ("M. Klein Associates") and Michael Klein (collectively, the "Reporting Persons"). This Amendment No. 2 represents the final amendment to the Schedule 13D and constitutes an "exit filing" for the Reporting Person. Capitalized terms used herein and not otherwise defined in this Amendment No. 2 have the meanings set forth in Amendment No. 1.

**Item 4. Purpose of Transaction**

The following amends and restates the information set forth in Item 4 of Amendment No. 1 by adding the following at the end thereof:

Pursuant to the Merger Agreement, the Domestication and the Mergers were completed on February 12 and February 13, 2026, respectively. Prior to the consummation of the Domestication and the Mergers, the Reporting Person held (i) 10,350,000 Class B ordinary shares of Churchill Capital Corp X ("Churchill") and (ii) 300,000 private placement units of Churchill (each unit consisting of one Class A ordinary share, par value $0.0001 per share, of Churchill and one quarter of one warrant, with the warrant only becoming exercisable 30 days after the completion of the Mergers). Upon the Domestication and pursuant to the Merger Agreement, the securities of Churchill held by the Reporting Person automatically converted into (i) 10,650,000 shares of common stock, par value $0.0001 per share, of the Issuer ("Common Stock") and (ii) 75,000 private placement warrants of the Issuer, which will become exercisable 30 days after the completion of the Mergers. Effective upon the completion of the Mergers, the A&R Registration Rights Agreement and Advisory Agreement became effective in accordance with their terms, as previously reported.

**Item 5. Interest in Securities of the Issuer**

**(a)**
See rows (11) and (13) of the cover page to this Schedule 13D for the aggregate number of Class A Ordinary Shares and percentage of Common Stock  beneficially owned by each of the Reporting Persons.

**(b)**
See rows (7) through (10) of the cover page to this Schedule 13D for the Common Stock as to which each of the Reporting Persons has the sole or shared power to vote or direct the vote and sole or shared power to dispose or to direct the disposition.

Mr. Klein is the controlling stockholder of M. Klein Associates, which is the managing member of the Sponsor and accordingly, Mr. Klein may be deemed to have beneficial ownership of securities reported herein.

Mr. Klein disclaims any ownership of securities reported herein other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

**(c)**
Except as set forth in Item 4, none of the Reporting Persons has effected any transactions of Ordinary Shares or Common Stock during the 60 days preceding the date of this report.

**Item 6. Contracts, Arrangements, Understandings or Relationships With Respect to Securities of the Issuer.**

Item 4 of this Amendment No. 2 is incorporated herein by reference.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Churchill Sponsor X LLC

**Signature:** /s/ Jay Taragin

**Name/Title:** by M Klein Associates, Inc., its managing member

**Date:** 02/17/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** M. Klein Associates, Inc.

**Signature:** /s/ Jay Taragin

**Name/Title:** Jay Taragin / Authorized Signatory

**Date:** 02/17/2026

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Michael Klein

**Signature:** /s/ Michael Klein

**Name/Title:** Michael Klein

**Date:** 02/17/2026