Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^{F1,F2,F3,F4,F5,F6,F7}	Nov 2, 2016	C	3,108,633	—	A	3,108,633	I	By Sequoia Capital XI, L.P.
Common Stock^{F1,F2,F3,F4,F5,F6,F7}	Nov 2, 2016	C	338,190	—	A	338,190	I	By Sequoia Capital XI Principals Fund, LLC
Common Stock^{F1,F2,F3,F4,F5,F6,F7}	Nov 2, 2016	C	98,188	—	A	98,188	I	By Sequoia Technology Partners XI, L.P.
Common Stock^F6,F8	Nov 2, 2016	C	2,583,233	—	A	2,583,233	I	By SC US GF V Holdings, LTD.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A Preferred Stock^F7,F1	—	Nov 2, 2016	C	385,357	D	—	—	Common Stock	727,111	I
Series A Preferred Stock^F7,F1	—	Nov 2, 2016	C	41,923	D	—	—	Common Stock	79,102	I
Series A Preferred Stock^F7,F1	—	Nov 2, 2016	C	12,172	D	—	—	Common Stock	22,967	I
Series B Preferred Stock^F7,F2	—	Nov 2, 2016	C	85,753	D	—	—	Common Stock	165,777	I
Series B Preferred Stock^F7,F2	—	Nov 2, 2016	C	9,329	D	—	—	Common Stock	18,035	I
Series B Preferred Stock^F7,F2	—	Nov 2, 2016	C	2,708	D	—	—	Common Stock	5,235	I
Series C Preferred Stock^F7,F3	—	Nov 2, 2016	C	117,366	D	—	—	Common Stock	232,247	I
Series C Preferred Stock^F7,F3	—	Nov 2, 2016	C	12,768	D	—	—	Common Stock	25,265	I
Series C Preferred Stock^F7,F3	—	Nov 2, 2016	C	3,706	D	—	—	Common Stock	7,333	I
Series D Preferred Stock^F7,F4	—	Nov 2, 2016	C	962,995	D	—	—	Common Stock	962,995	I
Series D Preferred Stock^F7,F4	—	Nov 2, 2016	C	104,766	D	—	—	Common Stock	104,766	I
Series D Preferred Stock^F7,F4	—	Nov 2, 2016	C	30,418	D	—	—	Common Stock	30,418	I
Series E Preferred Stock^F7,F5	—	Nov 2, 2016	C	561,493	D	—	—	Common Stock	561,493	I
Series E Preferred Stock^F7,F5	—	Nov 2, 2016	C	61,086	D	—	—	Common Stock	61,086	I
Series E Preferred Stock^F7,F5	—	Nov 2, 2016	C	17,736	D	—	—	Common Stock	17,736	I
Series F-1 Preferred Stock^F7,F6	—	Nov 2, 2016	C	459,010	D	—	—	Common Stock	459,010	I
Series F-1 Preferred Stock^F7,F6	—	Nov 2, 2016	C	49,936	D	—	—	Common Stock	49,936	I
Series F-1 Preferred Stock^F7,F6	—	Nov 2, 2016	C	14,499	D	—	—	Common Stock	14,499	I
Series F-1 Preferred Stock^F8,F6	—	Nov 2, 2016	C	2,583,233	D	—	—	Common Stock	2,583,233	I

Explanation of responses

F1The Series A Preferred Stock automatically converted into Common Stock on a 1.8868501529052:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F2The Series B Preferred Stock automatically converted into Common Stock on a 1.9332015399022:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F3The Series C Preferred Stock automatically converted into Common Stock on a 1.97882655585238:1 basis immediately prior to the closing of the Issuer's initial public offering and had no expiration date.
F4The Series D 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.
F5The Series E 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.
F6The Series F-1 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.
F7SC XI Management, LLC ("SC XI Management") is the general partner of Sequoia Capital XI, L.P. ("SC XI") and Sequoia Technology Partners XI, L.P. ("STP XI"), and the managing member of Sequoia Capital XI Principals Fund, LLC ("SC XI PF"). Douglas Leone and Michael Moritz are the managing members of SC XI Management. As a result, each of Messrs. Leone and Moritz and SC XI Management may be deemed to share voting and dispositive power with respect to the shares held by SC XI, STP XI and SC XI PF. Each of the Reporting Persons disclaims beneficial ownership of these securities except to the extent of his or its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.
F8SC US (TTGP), Ltd. ("SC US TTGP") is the general partner of SCGF V Management, L.P. ("GF V Management"), which is the general partner of each of Sequoia Capital U.S. Growth Fund V, L.P. ("SC Growth") and Sequoia Capital USGF Principals Fund V, L.P. ("SC USGF"). SC Growth and SC USGF together own 100% of the outstanding ordinary shares of SC US GF V Holdings, Ltd. ("SC Holdings"). As a result, SC US TTGP, SC Growth, SC USGF and GF V Management may be deemed to share voting and dispositive power with respect to the shares held by SC Holdings. Each of the filing persons disclaims beneficial ownership of these securities except to the extent of its pecuniary interest therein, and the inclusion of these securities in this report shall not be deemed an admission of beneficial ownership of the reported securities for purposes of Section 16 or for any other purposes.

Remarks

This filing is Part 1 of 2.