SmartStop Self Storage REIT, Inc.

SmartStop Self Storage REIT, Inc., a Maryland corporation (the Company ), is a self-managed and fully-integrated self storage real estate investment trust ( REIT ), formed on January 8, 2013 under the Maryland General Corporation Law. Our year-end is December 31. As used in this report, we, us, our, and Company refer to SmartStop Self Storage REIT, Inc. and each of our subsidiaries. Our Common Stock began trading on the New York Stock Exchange (the NYSE ) under the ticker symbol SMA on April 2, 2025. Business Objectives and Strategy We focus on the acquisition, ownership, and operation of self storage properties located primarily within the top 100 metropolitan statistical areas, or MSAs, throughout the United States and Canada. Based on the Inside Self Storage Top-Operators List ranking for 2025, and after accounting for recent market transactions, we are the 10th largest owner and operator of self storage properties in the United States based on rentable square footage. As of December 31, 2025, our wholly-owned portfolio consisted of 177 operating self storage properties diversified across 19 states, the District of Columbia, and Canada comprising approximately 122,000 units and 13.9 million net rentable square feet. Additionally, we owned a 50% equity interest in 13 unconsolidated real estate ventures located in Canada, which consisted of 10 operating self storage properties and three properties which were being developed into self storage properties as of December 31, 2025.