MARKHAM, Ontario, July 24, 2026 -- Sienna Senior Living Inc. (“Sienna” or the “Company”) TSX:SIA announced the confirmation by Morningstar DBRS of the Company’s BBB Issuer Rating and ratings on its Senior Unsecured Debentures, with trends remaining “Stable”.

"The confirmation of Sienna’s BBB credit rating reflects the strength of our operating platform and balance sheet, and the consistent execution of our growth strategy,” said Nitin Jain, President and Chief Executive Officer. "During a period of compelling fundamentals for the Canadian senior living sector, maintaining an investment-grade rating allows us to access capital on attractive terms as we continue to scale our platform."

Forward-Looking Statements

Certain of the statements contained in this news release are forward-looking statements and are provided for the purpose of presenting information about management’s current expectations and plans relating to the future. Readers are cautioned that such statements may not be appropriate for other purposes. These statements generally use forward-looking words, such as “anticipate,” “continue,” “could,” “expect,” “may,” “will,” “estimate,” “believe,” “goals”, “target” or other similar words and are based on the Company’s expectations, estimates, forecasts and projections. These statements are subject to significant known and unknown risks and uncertainties that may cause actual results or events to differ materially from those expressed or implied by such statements and, accordingly, should not be read as guarantees of future performance or results and will not necessarily be accurate indications of whether or not such results will be achieved. The forward-looking statements in this news release are based on information currently available and what management currently believes are reasonable assumptions. The Company does not undertake any obligation to publicly update or revise any forward-looking statements except as may be required by applicable law.

About Sienna Senior Living

Sienna Senior Living Inc. TSX:SIA offers a full range of seniors' living options, including independent living, assisted living and memory care under its Aspira retirement brand, long-term care, and specialized programs and services. Sienna's approximately 15,500 employees are passionate about cultivating happiness in daily life. For more information, please visit www.siennaliving.ca.

FOR FURTHER INFORMATION, PLEASE CONTACT:

David Hung

Chief Financial Officer and Executive Vice President, Investments

(905) 489-0258

[email protected]

Nancy Webb

Executive Vice President, Corporate Affairs and Marketing

(905) 477-4006 ext. 3030

[email protected]