Glass House Brands Announces the Filing of Shelf Prospectus and At-The-Market Distribution Program

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LONG BEACH, Calif. and TORONTO, June 10, 2026 (GLOBE NEWSWIRE) — Glass House Brands Inc. (“Glass House” or the “Company”) (CBOE CA: GLAS.A.U) (CBOE CA: GLAS.WT.U) (OTCQX: GLASF) (OTCQX:GHBWF) announced today that it has filed a short form base shelf prospectus (the “Shelf Prospectus”) dated June 10, 2026 with the securities regulatory authorities in all provinces and territories of Canada. The Shelf Prospectus replaces the Company’s prior short form base shelf prospectus, which was set to expire on June 17, 2026.

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In addition, the Company announced it has filed a prospectus supplement (the “Prospectus Supplement”) to the Shelf Prospectus in connection with an at-the-market distribution program (the “ATM Program”), pursuant to which the Company may, from time to time, sell up to US$100 million of its equity shares (the “Equity Shares”). The ATM Program replaces the previously announced equity distribution agreement dated May 13, 2026, under which no equity sales occurred.

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Since any Equity Shares will be distributed at trading prices prevailing at the time of the sale, prices may vary between purchasers and during the period of distribution. The volume and timing of sales, if any, will be determined at the sole discretion of the Company’s management and in accordance with the terms of an equity distribution agreement dated June 10, 2026 between the Company and ATB Cormark Capital Markets (the “Equity Distribution Agreement”).

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The Company currently intends to use net proceeds of the ATM Program, if any, for cultivation expansion, potential acquisitions that may be identified in the future and general corporate purposes. The Company views the ATM Program as a long-term source of potential capital to be accessed on an opportunistic basis, rather than servicing an immediate need.

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Sales of Equity Shares, if any, under the ATM Program are anticipated to be made in transactions that are deemed to be “at-the-market distributions” as defined in National Instrument 44-102 – Shelf Distributions, as sales made directly on CBOE Canada or any other recognized Canadian “marketplace” within the meaning of National Instrument 21-101 – Marketplace Operation.

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A copy of the Shelf Prospectus, the Prospectus Supplement and the Equity Distribution Agreement may be found on SEDAR+ (www.sedarplus.ca) under the Company’s issuer profile.

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An electronic or paper copy of the Shelf Prospectus, the Prospectus Supplement and the Equity Distribution Agreement, and any amendment to the documents, may also be obtained without charge, upon request only, by contacting ATB Cormark Capital Markets, by email at [email protected]. The Shelf Prospectus and Prospectus Supplement contain important, detailed information about Glass House and the ATM Program. Prospective investors should read the Shelf Prospectus and Prospectus Supplement before making an investment decision.