Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F1,F2	Jun 23, 2015	C	9,189,722	—	A	9,189,722	I	By Foundry Venture Capital 2007, L.P.
Class A Common Stock^F2	Jun 23, 2015	S	9,189,722	$18.80	D	0	I	By Foundry Venture Capital 2007, L.P.
Class A Common Stock^F1,F3	Jun 23, 2015	C	1,355,808	—	A	1,355,808	I	By Foundry Group Select Fund, L.P.
Class A Common Stock^F3	Jun 23, 2015	S	1,355,808	$18.80	D	0	I	By Foundry Group Select Fund, L.P.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Class B Common Stock^F1,F2	—	Jun 23, 2015	C	9,189,722	D	—	—	Class A Common Stock	9,189,722	36,758,890	I
Class B Common Stock^F1,F3	—	Jun 23, 2015	C	1,355,808	D	—	—	Class A Common Stock	1,355,808	5,423,232	I

Explanation of responses

F1Each share of Class B Common Stock is convertible at any time at the option of the Reporting Person into one share of Class A Common Stock and has no expiration date. The Class B Common Stock will convert automatically into Class A Common Stock on the same basis upon the earlier of: (i) any transfer, whether or not for value, except for certain "Permitted Transfers" as defined in the Issuer's restated certificate of incorporation in effect as of the date hereof, (ii) the affirmative vote of the holders of Class B Common Stock representing not less than a majority of the outstanding shares of Class B Common Stock, or (iii) June 17, 2027.
F2The shares are held by Foundry Venture Capital 2007, L.P. The general partner of Foundry Venture Capital 2007, L.P. is Foundry Venture 2007, LLC, which has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Venture 2007, LLC and share voting and dispositive power over these shares. Each of Foundry Venture 2007, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein.
F3The shares are held by Foundry Group Select Fund, L.P. The general partner of Foundry Group Select Fund, L.P. is Foundry Select Fund GP, LLC, which has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Select Fund GP, LLC and share voting and dispositive power over these shares. Each of Foundry Select Fund GP, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein.