Sharon Rockefeller

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.

National Gallery of Art operates an art gallery. The firm undertakes, preserves, collects, and exhibits the works of art and scholarly standards. The company was founded in March 1937 and is headquartered in Landover, MD.

Corp. for Public Broadcasting provides broadcasting services. It enables the operations of locally-owned and -operated public television and radio stations. The firm offers fince for research, technology, and program development for public radio, television, and related online services. The company was founded in 1967 and is headquartered in Washington, DC.

Greater Washington Educational Telecommunication Association owns and operates radio and television broadcasting stations. It produces and broadcast programs of intellectual integrity and cultural merit. The company was founded by Elizabeth Campbell in 1961 and is headquartered in Arlington, VA.

Johns Hopkins Medicine, Inc. owns and operates hospitals. It offers health care services in the areas of burn and wound care, cardiac surgery, cardiology, endocrinology, gastroenterology, gynecology/obstetrics, innovation in quality patient care, internal medicine, nephrology, neurology, neurosurgery, oncology, orthopedic surgery, otolaryngology-head and neck surgery. The company was founded by Johns Hopkins in 1997 and is headquartered in Baltimore, MD.

Public Broadcasting Service provides public broadcasting television services. They provide Television programming and related services to 356 noncommercial stations serving all 50 states, Puerto Rico, U.S. Virgin Islands, Guam and American Samoa. It offers oversees program acquisition and provides program distribution and promotion, education services, new media ventures, fundraising support, engineering and technology development and video marketing services. The company was founded in 1969 and is headquartered in Arlington, VA.

The Colonial Williamsburg Foundation provides an immersive and authentic 18th-century experience for guests, making it the largest outdoor educational living museum in the country. The non-profit company is based in Williamsburg, VA and has subsidiaries in the United States. Clifford B. Fleet has been the CEO of the company since 2020.

The Rockefeller Foundation operates and organizes charitable trusts. The company supports grants, fellowships, and conferences for programs that try to identify and alleviate need and suffering. It was founded in 1913 by John D. Rockefeller Sr. and is headquartered in New York City, NY.