Glass House Brands Inc. filed a short form base shelf prospectus dated June 10, 2026, with securities regulatory authorities in all provinces and territories of Canada. The filing replaces the company's prior short form base shelf prospectus, which was set to expire on June 17, 2026. Concurrently, the company filed a prospectus supplement to establish an at-the-market distribution program, allowing it to sell up to US$100 million of its equity shares. This new program replaces a previously announced equity distribution agreement dated May 13, 2026, under which no equity sales occurred.

The company intends to use the net proceeds from the ATM Program for cultivation expansion, potential acquisitions, and general corporate purposes. Glass House views the program as a long-term source of potential capital to be accessed on an opportunistic basis rather than to service an immediate need. The volume and timing of any sales will be determined at the sole discretion of the company's management.

Sales under the ATM Program will be made at trading prices prevailing at the time of sale, meaning prices may vary between purchasers and during the distribution period. The transactions will be conducted in accordance with the terms of an equity distribution agreement dated June 10, 2026, between the company and ATB Cormark Capital Markets. These sales are anticipated to occur on CBOE Canada or any other recognized Canadian marketplace.

The sales of equity shares will be deemed to be "at-the-market distributions" as defined in National Instrument 44-102 – Shelf Distributions. The shares will be sold directly on marketplaces defined under National Instrument 21-101 – Marketplace Operation. The company has made it clear that the prospectus supplement and shelf prospectus contain important information, and prospective investors should review these documents before making an investment decision.