Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F1	Sep 12, 2017	P	1,880,223	$21.25	A	3,746,567	I	By Abdiel Qualified Master Fund, LP
Class A Common Stock^F1	Sep 12, 2017	P	69,777	$21.25	A	3,816,344	I	By Abdiel Capital, LP
Class A Common Stock^F2,F1	Sep 13, 2017	P	12,523	$19.49	A	3,828,867	I	By Abdiel Qualified Master Fund, LP
Class A Common Stock^F2,F1	Sep 13, 2017	P	441	$19.49	A	3,829,308	I	By Abdiel Capital, LP
Class A Common Stock^F1	Sep 14, 2017	P	35,705	$19.50	A	3,865,013	I	By Abdiel Qualified Master Fund, LP
Class A Common Stock^F1	Sep 14, 2017	P	1,331	$19.50	A	3,866,344	I	By Abdiel Capital, LP

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The share numbers in Column 5 represent the aggregated holdings of Abdiel Qualified Master Fund, LP ("AQMF") and Abdiel Capital, LP ("ACLP"). Abdiel Capital Management, LLC is the general partner of AQMF and ACLP, and Abdiel Capital Advisors, LP serves as the investment manager of AQMF and ACLP. Colin T. Moran is the managing member of Abdiel Capital Management, LLC and Abdiel Capital Partners, LLC, which is the general partner of Abdiel Capital Advisors, LP. By virtue of the foregoing relationships, each of the reporting persons may be deemed to beneficially own the securities held by AQMF and ACLP. Each reporting person disclaims beneficial ownership of such securities, except to the extent of its or his pecuniary interest therein.
F2The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $19.45 to $19.50. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth in this footnote.