Number of women on board: 2 of 12 members
Number of women named executives: 0 of 3
Total employees: 260,000
Run by famed investing pair Warren Buffett and Charles Munger, Berkshire-Hathaway only lists three "named" officers, all of whom are men. The board is more diverse, with two female members -- Charlotte Guyman, formerly of Microsoft, and Sue Decker, the former president of Yahoo!. Outside the boardroom, however, women remain rare: the company's five best-known subsidiaries -- Burlington Northern Santa Fe Corp., GEICO Auto Insurance, NetJets, Benjamin Moore & Co., and Johns Manville -- all have male chief executives.