Document

6-K 1 form6k-materialchangerepor.htm 6-K Document

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER

PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2025

Commission File Number: 001-41713

ATS CORPORATION

(Translation of registrant’s name into English)

730 Fountain Street North

Building 3

Cambridge, Ontario N3H 4R7

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F ☐ Form 40-F ☒


INCORPORATION BY REFERENCE Exhibit 99.1 of this form 6-K is incorporated by reference as an additional exhibit to the registrant's Registration Statements on Form F-10 (File No. 333-278270) and Form S-8 (File No. 333-273050).

EXHIBIT INDEX



99.1			Material Change Report dated December 17, 2025

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

ATS CORPORATION

(Registrant)

Date: December 19, 2025

By:

/s/ Gordon Raman

Name: Gordon Raman

Title: Chief Legal Officer

SEC Form 6-K filed by ATS Corporation