MARKHAM, Ontario, Oct. 30, 2026 (GLOBE NEWSWIRE) -- Sienna Senior Living Inc. ("Sienna" or the "Company") (TSX: SIA) announced today that it has completed its previously disclosed $170.7 million acquisition of Stonemont On the Park (“Stonemont”), a 305-suite retirement residence in Ottawa, Ontario. Stonemont is a newly built, nearly 100% occupied retirement residence that opened in 2024. It offers a broad range of senior living and care options, from fully independent seniors’ apartments to supportive and a ...