Donald M. Stewart

Sotheby's Holdings, Inc. is the parent company of Sotheby's worldwide live auction businesses, art-related financing and real estate brokerage activities. The Company operates in 34 countries, with principal salesrooms located in New York and London. The Company also regularly conducts auctions in 13 other salesrooms around the world, including Australia, Hong Kong, France, Italy, the Netherlands, Switzerland and Singapore. Sotheby's Holdings was founded in 1744 and is headquartered in Bloomfield Hills, MI.

The College Board provides on-line high school and college educational services. The company was founded in 1999 and is headquartered in New York, NY.

Mayo Clinic provided medical care. The firm offered healthy living program, mayo clinic membership and health letter, medical products, population health and wellness programs, health plan administration, medical laboratory services and continuing education for medical professionals. The company was founded by William J. Mayo in 1919 and was headquartered in Rochester, MN.

The Chicago Community Trust provides charity services. It offers services to organizations such as social services agencies, schools, health centers, museums and theaters in the Chicago area. The firm provides charitable resources in the arts and culture, basic human needs, community development, education and health sectors. The company was founded in 1915 and is headquartered in Chicago, IL.

Elderhostel, Inc. is a not-for-profit organization that provides travel education to adults. It was founded in 1975 and is headquartered in Boston, MA.

Sotheby's operates as an art auction house. It operates through the following segments: Agency, SFS, and All Other. The Agency segment accepts property on consignment, and match sellers to buyers through the auction of private sale process. The SFS segment offers financing packages to clients who wish to obtain immediate access to liquidity from their art assets. The All Other segment comprises of advisory services, retail wine business, and brand licensing activities. The company was founded by Samuel Baker on March 11, 1744 and is headquartered in New York, NY.