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 May 2026

Commission File Number: 001-42925

BOYD GROUP SERVICES INC.

(Translation of registrant’s name into English)

1745 Ellice Avenue, Unit C1

Winnipeg, Manitoba, Canada R3H 1A6

(Address of principal executive office)

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 ☒

DOCUMENTS INCLUDED AS PART OF THIS FORM 6-K

Management’s Discussion & Analysis and the Interim Condensed Consolidated Financial Statements for the three months ended March 31, 2026 included on pages 2 to 21 and 22 to 41, respectively, of the Interim Report to Shareholders contained in Exhibit 99.1 to this report are incorporated by reference into the registrant’s Registration Statements on Form F-10 (File No. 333-291143) and Form S-8 (File No. 333-291880).

Exhibits

SIGNATURE

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.

Date: May 13, 2026