X0206 3 2013-05-15 0 0001131543 AMBIT BIOSCIENCES CORP AMBI 0001303521 Fuhrman Alan C/O AMBIT BIOSCIENCES CORPORATION 11080 ROSELLE STREET SAN DIEGO CA 92121 0 1 0 0 Chief Financial Officer Stock Option (Right to Buy) 1680.00 2020-10-10 Common Stock 125 D Stock Option (Right to Buy) 600.00 2021-08-17 Common Stock 157 D Stock Option (Right to Buy) 600.00 2021-08-17 Common Stock 157 D Stock Option (Right to Buy) 6.00 2021-08-17 Common Stock 100277 D 25% of the shares subject to the option vest on October 11, 2011; thereafter 1/48th of the shares subject to the option vest each month following October 11, 2011, so that all of the shares subject to the option shall be vested October 11, 2014. 25% of the shares subject to the option vest on May 18, 2012; thereafter 1/48th of the shares subject to the option vest each month following May 18, 2012, so that all of the shares subject to the option shall be vested May 18, 2015. 1/48th of the shares subject to the option vest monthly beginning on December 1, 2012. /s/ Alan Fuhrman 2013-05-15