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.

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.

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.

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.

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.

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.

Rockefeller Philanthropy Advisors is a nonprofit organization that accelerates philanthropy to create a just world. The non-profit company is based in New York, NY. The company continues the Rockefeller family's legacy of effective philanthropy and have a diverse team of experienced grantmakers with significant knowledge across various issue areas. The company currently advises and manage over $600 million in annual giving by individuals, families, foundations, and corporations. Founded in 2002, RPA has grown into one of the world's largest philanthropic service organizations and has facilitated over $4 billion in grantmaking to more than 70 countries.

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.