12 Business Titans Who Are Giving Away Their Wealth

Mark Zuckerberg isn't alone.

Mark Zuckerberg is certainly generous, but he isn't alone.

The Facebook chief executive said Tuesday that he will give away 99 percent of his family's stake in the social networking giant to celebrate the birth of daughter Max Zuckerberg, his first child with wife Priscilla Chan. Their Facebook shares are currently worth $45 billion.

Zuckerberg is far from the first billionaire businessperson to give away an eye-popping heap of money.

Here are 12 of the biggest names in business who have spread their wealth around:

Barry Diller
Net worth: $3 billion
Diller and his wife, the designer Diane von Furstenberg, have committed $130 million to help build a park on a Hudson River pier in New York. Diller has also given $30 million to the Motion Picture and Television Fund to provide health services for those working in show business.
Michael Bloomberg
Thibault Camus/AP
Net worth: $40.9 billion
The former mayor of New York City is behind Bloomberg Philanthropies, which has partnered with causes including Campaign for Tobacco Free Kids and the Sierra Club.
Bill Gates
Bruce Glikas via Getty Images
Net worth: $76 billion
Bill and Melinda Gates plan to give away $60 billion of their fortune through the Bill and Melinda Gates Foundation, much of which will support HIV/AIDS and malaria efforts.
Warren Buffett
Net worth: $62 billion
In 2014, Buffett gave around $2.1 billion to the Gates Foundation and $215 million to the Susan Thompson Buffett Foundation (named for his former wife), which helps fund scholarships for education.
Steve Case
The Washington Post via Getty Images
Net worth: $1.37 billion
The founder of AOL, The Huffington Post's parent company, now supports "people and ideas that can change the world" via The Case Foundation.
Larry Ellison
Net worth: $48.9 billion
Ellison says that 95 percent of his money will eventually go to philanthropic causes. One of those causes is The Lawrence Ellison Foundation, which works in part to research and counter the negative aspects of aging.
Sheryl Sandberg
Net worth: $1 billion
The Facebook executive gave away almost $12 million in 2012, but did not disclose the recipient.
George Lucas
Grant Lamos IV via Getty Images
Net worth: $5 billion
In October, the “Star Wars” director donated $10 million to the film school at the University of Southern California to support black and Hispanic students.
Carl Icahn
CNBC via Getty Images
Net worth: $21 billion
In 2012, Icahn gave $200 million to the Mount Sinai School of Medicine in New York.
Elon Musk
Net worth: $13 billion
The Tesla exec gave $10 million this year to the Future of Life Institute to help fund research projects on artificial intelligence.
Paul Allen
Net worth: $18.1 billion
The Microsoft co-founder has pledged much of his fortune to scientific research, including a brain-science institute in Seattle.
Eli Broad
Carlos Osorio/AP
Net worth: $7.4 billion
An entrepreneur behind two Fortune 500 companies, Broad and wife Edyth launched The Broad Foundations to support education, science and the arts.