Michael Stuart Klein - 29 Apr 2026 Form 4 Insider Report for Churchill Capital Corp XII (CXII)

Reporting relationship: Chief Executive Officer, President and Chairman of the Board of Directors, Director, 10%+ Owner
Issuer ticker: CXII
Reported as of: 29 Apr 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 29 Apr 2026, 16:50:07 UTC
Prior SEC filing: 28 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Michael Stuart Klein

Key filing fact

Michael Stuart Klein filed Form 4 for Churchill Capital Corp XII (CXII) on 29 Apr 2026.

Key facts

This page summarizes Michael Stuart Klein's Form 4 filing for Churchill Capital Corp XII (CXII).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 29 Apr 2026, 16:50.

Change

Previous filing in this sequence was filed on 28 Apr 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (3)

CIK 0001327392 Primary reporting owner

Klein Michael Stuart

Relationship: Chief Executive Officer, President and Chairman of the Board of Directors, Director, 10%+ Owner
Address: 640 FIFTH AVENUE, 14TH FLOOR, NEW YORK
Signature: /s/ Michael Stuart Klein
Signature date: 29 Apr 2026

CIK 0001751504

M. Klein Associates, Inc.

Relationship: Chief Executive Officer, President and Chairman of the Board of Directors, Director, 10%+ Owner
Address: 640 FIFTH AVENUE, 14TH FLOOR, NEW YORK
Signature: M. Klein Associates, Inc., By: /s/ Lee Jay Taragin, Name: Lee Jay Taragin, Title: Authorized Person
Signature date: 29 Apr 2026

CIK 0002124744

CHURCHILL SPONSOR XII LLC

Relationship: 10%+ Owner
Address: 640 FIFTH AVENUE, 14TH FLOOR, NEW YORK
Signature: Churchill Sponsor XII LLC, By: M. Klein Associates, Inc., its manager, By: /s/ Lee Jay Taragin, Name: Lee Jay Taragin, Title: Authorized Person:
Signature date: 29 Apr 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

CXII transaction

Class A Ordinary Shares

Purchase

Transaction value
Shares: +350,000
Change %
Price: $10.00^*
Shares after: 350,000
Date: 29 Apr 2026
Ownership: See footnote
Footnotes: F1, F2

CXII transaction

Class A Ordinary Shares

Purchase

Transaction value
Shares: +350,000
Change %
Price: $10.00^*
Shares after: 350,000
Date: 29 Apr 2026
Ownership: See footnote
Footnotes: F1, F2

CXII transaction

Class A Ordinary Shares

Purchase

Transaction value
Shares: +350,000
Change %
Price: $10.00^*
Shares after: 350,000
Date: 29 Apr 2026
Ownership: See footnote
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

Represents shares underlying the private placement units (each unit consisting of one Class A ordinary share and one-tenth of one warrant, each whole warrant exercisable to purchase one Class A ordinary share) directly held by Churchill Sponsor XII LLC (the "Sponsor"), and which were acquired pursuant to a Private Placement Units Purchase Agreement by and between the Sponsor and Churchill Capital Corp XII.

Footnote F2

Michael Stuart Klein, the Chief Executive Officer, President and a director of the Issuer, is the controlling shareholder 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.

SEC remarks

Chief Executive Officer, President and Chairman of the Board of Directors