# EDGAR Filing Document

**Accession Number:** 0001848787
**File Stem:** 0000950170-25-090866
**Filing Date:** 2025-6
**Character Count:** 5861
**Document Hash:** 748abed393eda8ff83530ac2e8ef9586
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0000950170-25-090866.hdr.sgml**: 20250627

**ACCESSION NUMBER**: 0000950170-25-090866

**CONFORMED SUBMISSION TYPE**: 3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250513

**FILED AS OF DATE**: 20250627

**DATE AS OF CHANGE**: 20250627

**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:** 3
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42646
- **FILM NUMBER:** 251086241

**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:** BLANK CHECKS [6770]
- **ORGANIZATION NAME:** 05 Real Estate & Construction
- **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 3

### INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

[ ] Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

---

| | | |
|:---|:---|:---|
| **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. Issuer Name and Ticker or Trading Symbol**<br>Churchill Capital Corp X/Cayman [ CCCXU ] | **5. If Amendment, Date of Original Filed (Month/Day/Year)**<br>  |
| **2. Date of Event Requiring Statement (Month/Day/Year)**<br>2025-05-13 | **4. Relationship of Reporting Person(s) to Issuer**<br>(Check all applicable)<br>[ ] Director   [X] 10% Owner<br>[ ] Officer (give title below)   [ ] Other (specify below)<br>_ _ | **6. Individual or Joint/Group Filing (Check Applicable Line)**<br>[X] Form filed by One Reporting Person<br>[ ] Form filed by More than One Reporting Person |

---

## Table I - Non-Derivative Securities Beneficially Owned

---

|  |  |  |  |
| --- | --- | --- | --- |
| 1. Title of Security | 2. Amount of Securities Beneficially Owned | 3. Ownership Form | 4. Nature of Indirect Beneficial Ownership |

---

## Table II - Derivative Securities Beneficially Owned

---

|  |  |  |  |  |  |  |  |
| --- | --- | --- | --- | --- | --- | --- | --- |
| 1. Title of Derivative Security | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 2. Date Exercisable and Expiration Date (Month/Day/Year) | 3. Title and Amount of Underlying Securities | 3. Title and Amount of Underlying Securities | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| 1. Title of Derivative Security | Date Exercisable | Expiration Date | Title | Amount or Number of Shares | 4. Conversion or Exercise Price | 5. Ownership Form | 6. Nature of Indirect Beneficial Ownership |
| Class B Ordinary Shares, par value $0.0001 per share | <sup>(1)</sup> | <sup>(1)</sup> | Class A Ordinary Shares, par value $0.0001 per share | 10350000 | <sup>(1)</sup> | D<sup>(1)(2)</sup> |  |

---

### Footnotes:

(1) The reported shares of Churchill Capital Corp X (the "Issuer") are directly held by Churchill Sponsor X LLC (the "Sponsor") and include 10,350,000 Class B ordinary shares. Pursuant to the Issuer's Amended and Restated Memorandum and Articles of Association, the Class B ordinary shares will automatically convert into Class A ordinary shares, par value $0.0001 per share, of the Issuer at the time of the Issuer's initial business combination on a one-for-one basis, or at any time prior to the Issuer's initial business combination, at the option of the holder, subject to adjustment as described under the heading "Description of Securities--Founder Shares" in the Issuer's registration statement on Form S-1 (File No. 333-286799).

(2) Michael Klein is the controlling stockholder of M. Klein Associates, Inc., which is the managing member of the Sponsor, and has voting and investment discretion with respect to the securities held by the Sponsor. As such, Mr. Klein may be deemed to possess beneficial ownership of the securities held directly by the Sponsor. Mr. Klein disclaims any beneficial ownership of the reported securities other than to the extent of any pecuniary interest he may have therein, directly or indirectly.

**Signature:** /s/ Churchill Sponsor X LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Jay Taragin, Name: Jay Taragin, Title: Authorized Person  
**Date:** 2025-06-27

### 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.**