X0306 4 2016-03-15 0 0001355790 International Stem Cell CORP ISCO.OB 0001447708 Semechkin Andrey C/O INTERNATIONAL STEM CELL CORP. 5950 PRIESTLY DRIVE CARLSBAD CA 92008 1 1 1 0 Chief Executive Officer Series I-2 Preferred Stock 1.75 2016-03-15 4 P 0 4310 1000 D Common Stock 2462856 4310 D Series A Warrant (Right to Buy) 3.64 2016-03-15 4 P 0 2462856 0 D 2016-03-15 2021-03-15 Common Stock 2462856 2462856 D Series B Warrant (Right to Buy) 1.75 2016-03-15 4 P 0 2462856 0 D 2016-03-15 2016-09-15 Common Stock 2462856 2462856 D Series C Warrant (Right to Buy) 1.75 2016-03-15 4 P 0 2462856 0 D 2016-03-15 2017-03-15 Common Stock 2462856 2462856 D The Series I-2 Preferred Stock is convertible into common stock at any time at an initial conversion price of $1.75 per share. The conversion price is subject to adjustments in the event of certain transactions. Exercise price is subject to adjustment as defined in the warrant agreement, and is initially set at $3.64 per share. Exercise price is subject to adjustment as defined in the warrant agreement, and is initially set at $1.75 per share. Assuming full exercise of the Warrants. Number of underlying securities issuable under the warrants is subject to a 4.99% beneficial ownership limitation; as defined in the warrant agreement. /s/ Mahnaz Ebrahimi, Attorney-in-Fact 2016-03-18