Short answers, pulled from the story.
Sheraton dates its founding to 1937 when Ernest Henderson and Robert Moore acquired the Stonehaven Hotel in Springfield, Massachusetts. The chain received its name from a third hotel acquired in Boston during 1939.
The Sheraton Corporation of America became the first hotel chain listed on the New York Stock Exchange in 1947. This listing followed the merger of Standard Equities Corporation with United States Realty and Improvement Corporation in 1946.
ITT Corporation purchased the Sheraton chain in 1968 and immediately sold eighteen aging Sheraton properties. Under ITT ownership, the company shifted focus toward franchising and management models instead of property ownership.
Only three hotels previously named Sheraton remain under that name: Sheraton Addis in Addis Ababa, Ethiopia; Sheraton Grande Sukhumvit in Bangkok, Thailand; and Sheraton Kuwait in Kuwait City, Kuwait. Most other properties have been renamed since Starwood acquired ITT Sheraton for $13.3 billion in 1998.
Marriott announced a new spinoff called Four Points Express by Sheraton in 2023 targeting the mid-range market in Europe, the Middle East, and Africa. In 2024, the brand was renamed Four Points Flex by Sheraton.