Mr. Sam Altman reports

SLATE OFFICE REIT RECEIVES NOTICE OF TERMINATION OF EXTERNAL MANAGEMENT AGREEMENT

Slate Management ULC, the external manager of Slate Office REIT, has initiated a process to terminate its external management agreement with the real estate investment trust. Trustees Blair Welch and Brady Welch have also resigned from the REIT's board, effective immediately.

In accordance with the management agreement with the REIT, Slate has provided the REIT with 180 days notice of termination, and will co-operate and work diligently with the REIT to prepare a transition plan and effect the transition of the management services to the REIT in an orderly manner as soon as reasonably practicable.

Sam Altman, chair of the board of trustees of the REIT, commented: "We are working collaboratively with Slate to internalize management of the REIT. The trustees believe that internalized management will achieve strong alignment with unitholders and lower costs for the REIT."

About Slate Office REIT

Slate Office is a global owner and operator of high-quality workplace real estate. The REIT owns interests in and operates a portfolio of strategic and well-located real estate assets in North America and Europe. The majority of the REIT's portfolio is composed of government and high-quality credit tenants. The REIT acquires quality assets at a discount to replacement cost and creates value for unitholders by applying hands-on asset management strategies to increase rental revenue, extend lease term and increase occupancy.

We seek Safe Harbor.