The Company is required to reserve and keep available out of its authorized but unissued shares of common stock a number of shares sufficient to effect the conversion of all outstanding shares of preferred stock (and preferred stock warrants), plus options granted and available for grant under the incentive plans.

 

		June 30, 2015				December 31, 2014
Conversion of outstanding Series A convertible preferred stock			252,817				252,817
Conversion of outstanding Series B redeemable convertible preferred stock			1,947,354				1,947,354
Conversion of outstanding Series B-1 redeemable convertible preferred stock			1,478,328				1,392,300
Conversion of outstanding Series C redeemable convertible preferred stock			2,493,017				2,487,770
Conversion of outstanding Series D redeemable convertible preferred stock			11,409,360				11,409,360
Outstanding preferred stock warrants			885,201				976,492
Outstanding and issued stock options			3,294,849				2,138,096
Shares reserved for future option grants			365,535				1,550,101
Total common stock reserved for issuance			22,126,461				22,154,290