X0306 4 2015-03-19 0 0001411158 Anacor Pharmaceuticals, Inc. ANAC 0001202769 BERNS PAUL L C/O ANACOR PHARMACEUTICALS, INC. 1020 EAST MEADOW CIRCLE PALO ALTO CA 94303 1 1 0 0 President and CEO Common Stock 2015-03-19 4 S 0 37500 56.0705 D 308760 D This sale was effected pursuant to a pre-existing Rule 10b5-1 trading plan adopted by the reporting person to cover taxes associated with the vesting of restricted stock units. The price reported in Column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $55.455 to $56.45, inclusive. /s/ Lucy O. Day, Attorney-in-fact 2015-03-23