Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2,F3	Mar 22, 2017	C	1,480,111	—	A	3,371,810	I	See footnote
Common Stock^F4,F3	Mar 22, 2017	J	3,371,810	—	D	0	I	See footnote
Common Stock^F1,F2,F5	Mar 22, 2017	C	36,551	—	A	83,270	I	See footnote
Common Stock^F4,F5	Mar 22, 2017	J	83,270	—	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 F Preferred Stock^F1,F3	—	Mar 22, 2017	C	1,045,500	D	—	—	Common Stock	1,045,500	0	I
Series G Preferred Stock^F2,F3	—	Mar 22, 2017	C	434,611	D	—	—	Common Stock	434,611	0	I
Class B Common Stock^F4,F6,F3	—	Mar 22, 2017	J	3,371,810	A	—	—	Class A Common Stock	3,371,810	3,371,810	I
Series F Preferred Stock^F1,F5	—	Mar 22, 2017	C	25,819	D	—	—	Common Stock	25,819	0	I
Series G Preferred Stock^F2,F5	—	Mar 22, 2017	C	10,732	D	—	—	Common Stock	10,732	0	I
Class B Common Stock^F4,F6,F5	—	Mar 22, 2017	J	83,270	A	—	—	Class A Common Stock	83,270	83,270	I

Explanation of responses

F1The Series F Preferred Stock automatically converted into 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 G Preferred Stock automatically converted into Common Stock on a 1:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F3Shares are held 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.
F4Immediately 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 Common Stock, each share of Common Stock was reclassified into one share of Class B Common Stock in an exempt transaction pursuant to Rule 16b-7.
F5Shares are held 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.
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.