In 2011, Warren Buffett made $43,300 in political contributions—the maximum and the most of any other CEO for the top 25 Fortune 500 companies. His largest contribution was $30,800 to the Democratic National Committee. He donated an additional $30,000 to the DNC in January. Exxon Mobil CEO Rex Tillerson donated $42,800 in 2011, $30,800 of which went to the National Republican Senatorial Committee. Not to be outdone, Chevron CEO John Watson contributed $40,400, with $30,400 of that going to the NRSC. The company itself has donated $500,000 in the 2012 two-year election cycle so far, 87% of which has gone toward Republican candidates. James Sinegal, CEO for Costco Wholesale contributed $20,000 to the Democratic Senatorial Campaign Committee from the $24,900 in total contributions that year. UnitedHealth Group CEO Rex Stephen Hemsley donated $12,500 in 2011, $5,000 of which went to the NRSC.