The Chronicle of Philanthropy has released its list of America's biggest donors of 2013. Take a look at the 15 most generous donors.
15. Eli and Edythe Broad. Donation: $157 million. Eli Broad founded homebuilder KB Home and financial services company SunAmerica. Their donations primarily went to the Broad Foundations.
14. Muriel Block. Donations: $160 million bequest. Block and her husband owned commercial real estate in New York. She died in 2010, leaving $160 million to the Albert Einstein College of Medicine at Yeshiva University.
13. Ronald Perelman. Donations: $196 million. Perelman is chairman and chief executive at MacAndrews & Forbes Holdings. His biggest donations include $100 million to the Columbia Business School and $50 million to New York University Langone Medical Center.
12. Stephen Ross. Donations: $200 million. Ross founded New York real estate development company Related Companies and is a majority stakeholder in the Miami Dolphins. He pledged $200 million to the University of Michigan, his alma mater.
11. John Allen. Donations: $206 million. Allen is a co-founder of Microsoft. Most of his donations went to the Paul G. Allen Family Foundation.
10. Jeffrey Carlton. Donations: $212 million bequest. Carlton founded Press Forge, a metals processing company in California. He left a $212 million trust that will create the Jeffrey Carlton Charitable Foundation, which in turn will support four different nonprofits.
9. Sergey Brin and Anne Wojicicki. Donations: $219 million. Brin is a co-founder of Google and directs the company’s special projects; his wife, Wojicicki, is co-founder of genetic testing company 23andME. Most of their donations have gone to the Brin Wojcicki Foundation.
8. Irwin and Joan Jacobs. Donations: $221.2 million. Jacobs is one of the founders of media company Qualcomm. The couple donated $133 million to establish the Jacobs Technion-Cornell Innovation Institute at Cornell New York City Tech. They also gave large gifts to the Joan and Irwin Jacobs Fund at the Jewish Community Foundation of San Diego, the Dunaway Foundation and the San Diego Public Library Foundation.
7. Pierre and Pam Omidyar. Donation: $225 million. Pierre Omidyar founded eBay. Pam Omidyar chairs the nonprofit HopeLab, which develops technology to help sick children. The Omidyars gave to HopeLab, Humanity United, The Omidyar Foundation and the Ulupono Initiative.
6. Charles Johnson. Donation: $250 million. Johnson was the head of Franklin Templeton Investments' parent company before he retired. He's also the majority shareholder of the San Francisco Giants. He pledged $250 million to Yale University, his alma mater.
5. John and Laura Arnold. Donations: $296.2 million. John Arnold founded the hedge fund Centaurus; Laura Arnold is a former lawyer and businesswoman. Most of their donations have gone to the Laura and John Arnold Foundation.
4. Michael Bloomberg. Donations: $452 million. Bloomberg founded the financial data and news company that bears his name. He is also the former mayor of New York City. He primarily gave to arts, education, public health and environmental groups.
3. Philip and Penelope Knight. Donation: $500 million. Philip Knight is the co-founder and chairman of Nike. The couple's primary beneficiary was the Oregon Health & Science University Foundation.
2. George P. Mitchell. Donations: $750 million bequest. Mitchell was the founder of gas and oil company Mitchell Energy and Development. He died in July, leaving $750 million to the Cynthia and George Mitchell Foundation, which supports several nonprofits around Texas.
1. Mark Zuckerberg and Priscilla Chan. Donations: $992.2 million. Zuckerberg is a co-founder of Facebook and serves as the social networking site’s chairman and chief executive. His wife, Chan, is a pediatrician. Most of their donations have gone to the Silicon Valley Community Foundation.