Highest-Ranked Publicly Traded Self-Storage Company

SmartStop Self Storage REIT, Inc. ("SmartStop") (NYSE:SMA), an internally managed real estate investment trust and a premier owner and operator of self-storage facilities in the United States and Canada, announced its inclusion in Reviewed's Best National Storage Chains of 2026. Notably, SmartStop earned the distinction of being the highest-ranked publicly traded self-storage company on this year's list.

The annual rankings, determined by reader voting, spotlight brands that have earned exceptional consumer trust and satisfaction nationwide. SmartStop's placement underscores its commitment to providing a superior storage experience, highlighted by high-quality facilities and outstanding customer service throughout its expanding North American portfolio.

"This recognition is especially meaningful because it comes directly from the experiences and feedback of the customers we serve every day," said H. Michael Schwartz, SmartStop's Chairman and CEO. "Being named the highest-ranked publicly traded self-storage company by Reviewed readers is an exciting honor. It's a testament to our team's passion and commitment to delivering outstanding service."

The award further reinforces SmartStop's position as one of the leading self-storage operators in North America. With ongoing investment in its properties, technology, and customer-focused initiatives, SmartStop remains dedicated to delivering clean, secure, and modern storage solutions tailored to residential and business customers.

About SmartStop Self Storage REIT, Inc. (SmartStop):

SmartStop Self Storage REIT, Inc. ("SmartStop") (NYSE:SMA) is a self-managed REIT with a fully integrated operations team of more than 1,000 self-storage professionals focused on growing the SmartStop® Self Storage brand. SmartStop, through its indirect subsidiary, SmartStop REIT Advisors, LLC, also sponsors other self-storage programs and, through its Managed Platform, offers third-party management services in the U.S. and Canada. As of June 05, 2026, SmartStop has an owned or managed portfolio of approximately 460 operating properties in 35 states, Washington, D.C., and Canada, comprising over 270,000 units and more than 35 million rentable square feet. SmartStop and its affiliates own or manage 51 operating self-storage properties across four provinces in Canada, which total approximately 45,000 units and 4.5 million rentable square feet. Additional information regarding SmartStop is available at www.smartstopselfstorage.com.

View source version on businesswire.com: https://www.businesswire.com/news/home/20260605911361/en/

Investor Relations Contact:

David Corak

Senior VP of Corporate Finance and Strategy

SmartStop Self Storage REIT, Inc.

IR@smartstop.com

Media Relations Contact:

Julie Leber

Spotlight Marketing Communications

949-427-1391

Julie@spotlightmarcom.com

SmartStop Self Storage Named One of Reviewed's Best National Storage Chains of 2026