6-K - Glass House Brands Inc. (0001848731) (Filer)

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 October, 2026.

Commission File Number 001-43373

Glass House Brands Inc.

(Translation of registrant’s name into English)

3645 Long Beach Blvd.

Long Beach, California 90807

(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 x Form 40-F

INCORPORATION BY REFERENCE

Exhibit 99.1 of this Report on Form 6-K is incorporated by reference into the Registration Statements on Form F-10 (File No. 333-297455) and Form S-8 (File No. 333-288297) of the Registrant, each as amended or supplemented.

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.

EXHIBIT INDEX