X0306 4 2015-07-24 0 0001061027 SUNESIS PHARMACEUTICALS INC SNSS 0001323113 Swisher Daniel N JR C/O SUNESIS PHARMACEUTICALS, INC. 395 OYSTER POINT BLVD., STE. 400 SOUTH SAN FRANCISCO CA 94080 1 1 0 0 President and CEO Common Stock 2015-07-24 4 X 0 22210 1.32 A 151346 I See footnote Common Stock 2015-07-24 4 S 0 8477 3.4585 D 142869 I See footnote Common Stock 2015-07-24 4 X 0 11105 1.32 A 153974 I See footnote Common Stock 2015-07-24 4 S 0 4238 3.4585 D 149736 I See footnote Common Stock 2015-07-24 4 P 0 25000 1.0183 A 174336 I See footnote Common Stock 179510 D Warrant (right to buy) 1.32 2015-07-24 4 X 0 22210 0 D 2009-04-03 2016-04-03 Common Stock 22210 0 I See footnote Warrant (right to buy) 1.32 2015-07-24 4 X 0 11105 0 D 2009-10-30 2016-10-30 Common Stock 11105 0 I See footnote The shares are held by the Swisher Revocable Trust for which reporting person is the Trustee. On July 24, 2015, the reporting person exercised a warrant to purchase 22,210 shares of SNSS common stock for $1.32 a share. The reporting person paid the exercise price on a cashless basis, resulting in SNSS's withholding of 8,477 of the warrant shares to pay the exercise price and issuing to the reporting person the remaining 13,733 shares. On July 24, 2015, the reporting person exercised a warrant to purchase 11,105 shares of SNSS common stock for $1.32 a share. The reporting person paid the exercise price on a cashless basis, resulting in SNSS's withholding of 4,238 of the warrant shares to pay the exercise price and issuing to the reporting person the remaining 6,867 shares. The number of shares includes 3,686 shares that the reporting person acquired from an ESPP purchase on 5/29/15. /s/ David Tucker (Attorney-in-Fact) 2015-07-28