A.P.  SEATTLE — Forty wealthy families and individuals have joined Microsoft Corp. co-founder Bill
Gates and billionaire investor Warren Buffett in a pledge to give at least half their wealth to charity.

Six weeks after launching a campaign to get other billionaires to donate most of their fortunes, the
chairman and CEO of Berkshire Hathaway Inc. released the first list Wednesday of people who have
signed what he and Gates call the "giving pledge."

Buffett decided in 2006 to give 99 percent of his fortune to charity. Then, he was worth about $44
billion. After five years of investment returns while making annual gifts to five foundations, Buffett's
fortune totals nearly $46 billion.

Bill and Melinda Gates do most of their philanthropic giving through their foundation, which had
assets of $33 billion as of June 30 and has made at least $22.93 billion in total grant commitments
since 1994.

Buffett said he, the Gateses and others have made 70 to 80 calls to some of the nation's wealthiest
individuals. The people who agreed to the pledge are from 13 states, with the most participants in
California and New York.

Among those who haven't signed the pledge, some prefer to keep their philanthropy anonymous,
some were not available to talk, and others were not interested, Buffett said.

Many on the list will be asked to call others, and small dinners will be held across the country in
coming months to talk about the campaign.

"We're off to a terrific start," Buffett said.

Buffett said he and Bill Gates also will meet with groups of wealthy people in China and India within
the next six months to talk about philanthropy. They hope the idea of generosity will spread, but they
have no plans to lead a global campaign, Buffett said.

40 Wealthy Families Pledge To Donate Their Money
AUGUST 4, 2010