X0202 4 2007-10-12 0001092050 MICROISLET INC MIIS.OB 0001414713 Basu Amaresh C/O MICROISLET, INC. 6370 NANCY RIDGE DRIVE, SUITE 112 SAN DIEGO CA 92121 0 1 0 0 VP, Research and Development Employee Stock Options (right to buy) .55 2007-10-12 4 A 0 100000 0 A 2017-10-11 Common Stock 100000 100000 D Subject to continuing service by the reporting person, 1/6 of the option will vest six months after the grant date, and the balance of the option will vest monthly in equal increments until the third anniversary of the grant date, at which time the option will be fully vested. /s/ Amaresh Basu 2007-10-15