Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Existing Class A Common Stock^F1,F2,F3	Jan 28, 2015	C	4,498,408	—	A	4,498,408	I	See footnote
Existing Class A Common Stock^F1,F2,F4	Jan 28, 2015	C	111,089	—	A	111,089	I	See footnote
Existing Class A Common Stock^F5,F3	Jan 28, 2015	J	4,498,408	—	D	0	I	See footnote
Existing Class A Common Stock^F5,F4	Jan 28, 2015	J	111,089	—	D	0	I	See footnote

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series D Preferred Stock^F3,F1	—	Jan 28, 2015	C	4,012,366	D	—	—	Existing Class A Common Stock	4,012,366	0	I
Series D Preferred Stock^F4,F1	—	Jan 28, 2015	C	99,086	D	—	—	Existing Class A Common Stock	99,086	0	I
Series D-1 Preferred Stock^F3,F2	—	Jan 28, 2015	C	486,042	D	—	—	Existing Class A Common Stock	486,042	0	I
Series D-1 Preferred Stock^F4,F2	—	Jan 28, 2015	C	12,003	D	—	—	Existing Class A Common Stock	12,003	0	I
Class B Common Stock^F6,F3	—	Jan 28, 2015	J	4,498,408	A	—	—	Class A Common Stock	4,498,408	4,498,408	I
Class B Common Stock^F6,F4	—	Jan 28, 2015	J	111,089	A	—	—	Class A Common Stock	111,089	111,089	I

Explanation of responses

F1The Series D Preferred Stock automatically converted into the Issuer's existing Class A Common Stock ("Existing Class A Common Stock") on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F2The Series D-1 Preferred Stock automatically converted into Existing Class A Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F3The reported securities are held of record by Meritech Capital Partners IV L.P. ("MCP IV"). Meritech Capital Associates IV L.L.C., the general partner of MCP IV, has sole voting and dispositive power with respect to the securities held by MCP IV. Paul S. Madera, Michael B. Gordon, Robert D. Ward, George H. Bischof and Craig Sherman, the managing members of Meritech Capital Associates IV L.L.C., share voting and dispositive power with respect to the shares held by MCP IV. Such persons and entities disclaim beneficial ownership of the securities held by MCP IV except to the extent of any pecuniary interest therein.
F4The reported securities are held of record by Meritech Capital Affiliates IV L.P ("MCA IV"). Meritech Capital Associates IV L.L.C., the general partner of MCA IV, has sole voting and dispositive power with respect to the securities held by MCA IV. Paul S. Madera, Michael B. Gordon, Robert D. Ward, George H. Bischof and Craig Sherman, the managing members of Meritech Capital Associates IV L.L.C., share voting and dispositive power with respect to the shares held by MCA IV. Such persons and entities disclaim beneficial ownership of the securities held by MCA IV except to the extent of any pecuniary interest therein.
F5Immediately prior to the closing of the Issuer's initial public offering and following the conversion of each series of the Issuer's convertible preferred stock into Existing Class A Common Stock, each share of Existing Class A Common Stock was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7.
F6Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and has no expiration date.