Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2,F3	Apr 10, 2017	C	3,967,830	—	A	3,967,830	I	By Sequoia Capital Growth Fund III, L.P.
Common Stock^F4,F2,F3	Apr 10, 2017	C	1,174,887	—	A	5,142,717	I	By Sequoia Capital Growth Fund III, L.P.
Common Stock^F1,F3,F5	Apr 10, 2017	C	698,832	—	A	698,832	I	By Sequoia Capital IX, L.P.
Common Stock^F4,F3,F5	Apr 10, 2017	C	206,927	—	A	905,760	I	By Sequoia Capital IX, L.P.
Common Stock^F1,F6,F3,F7	Apr 10, 2017	C	640,585	—	A	673,825	I	By Sequoia Capital Franchise Fund, L.P.
Common Stock^F4,F6,F3,F7	Apr 10, 2017	C	189,680	—	A	863,505	I	By Sequoia Capital Franchise Fund, L.P.
Common Stock^F1,F2,F3	Apr 10, 2017	C	194,312	—	A	194,312	I	By Sequoia Capital Growth III Principals Fund, LLC
Common Stock^F4,F2,F3	Apr 10, 2017	C	57,537	—	A	251,849	I	By Sequoia Capital Growth III Principals Fund, LLC
Common Stock^F1,F6,F3,F7	Apr 10, 2017	C	87,350	—	A	91,882	I	By Sequoia Capital Franchise Partners, L.P.
Common Stock^F4,F6,F3,F7	Apr 10, 2017	C	25,865	—	A	117,747	I	By Sequoia Capital Franchise Partners, L.P.
Common Stock^F1,F2,F3	Apr 10, 2017	C	43,740	—	A	43,740	I	By Sequoia Capital Growth Partners III, L.P.
Common Stock^F4,F2,F3	Apr 10, 2017	C	12,952	—	A	56,692	I	By Sequoia Capital Growth Partners III, L.P.
Common Stock^F1,F3,F5	Apr 10, 2017	C	29,115	—	A	29,115	I	By Sequoia Capital Entrepreneurs Annex Fund, L.P.
Common Stock^F4,F3,F5	Apr 10, 2017	C	8,620	—	A	37,735	I	By Sequoia Capital Entrepreneurs Annex Fund, L.P.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A Preferred Stock^F2,F3,F1,F6	—	Apr 10, 2017	C	1,587,132	D	—	—	Common Stock	3,967,830	I
Series B Preferred Stock^F2,F3,F4,F6	—	Apr 10, 2017	C	469,955	D	—	—	Common Stock	1,174,887	I
Series A Preferred Stock^F3,F5,F1,F6	—	Apr 10, 2017	C	279,533	D	—	—	Common Stock	698,832	I
Series B Preferred Stock^F3,F5,F4,F6	—	Apr 10, 2017	C	82,771	D	—	—	Common Stock	206,927	I
Series A Preferred Stock^F3,F7,F1,F6	—	Apr 10, 2017	C	256,234	D	—	—	Common Stock	640,585	I
Series B Preferred Stock^F3,F7,F4,F6	—	Apr 10, 2017	C	75,872	D	—	—	Common Stock	189,680	I
Series A Preferred Stock^F2,F3,F1,F6	—	Apr 10, 2017	C	77,725	D	—	—	Common Stock	194,312	I
Series B Preferred Stock^F2,F3,F4,F6	—	Apr 10, 2017	C	23,015	D	—	—	Common Stock	57,537	I
Series A Preferred Stock^F3,F7,F1,F6	—	Apr 10, 2017	C	34,940	D	—	—	Common Stock	87,350	I
Series B Preferred Stock^F3,F7,F4,F6	—	Apr 10, 2017	C	10,346	D	—	—	Common Stock	25,865	I
Series A Preferred Stock^F2,F3,F1,F6	—	Apr 10, 2017	C	17,496	D	—	—	Common Stock	43,740	I
Series B Preferred Stock^F2,F3,F4,F6	—	Apr 10, 2017	C	5,181	D	—	—	Common Stock	12,952	I
Series A Preferred Stock^F3,F5,F1,F6	—	Apr 10, 2017	C	11,646	D	—	—	Common Stock	29,115	I
Series B Preferred Stock^F3,F5,F4,F6	—	Apr 10, 2017	C	3,448	D	—	—	Common Stock	8,620	I

Explanation of responses

F1The Series A preferred stock converted into issuer common stock on a 1-for-1 basis and has no expiration date.
F2SCGF III Management, LLC is the general partner of each of Sequoia Capital Growth Partners III, L.P. and Sequoia Capital Growth Fund III, L.P., and is the managing member of Sequoia Capital Growth III Principals Fund, LLC. As a result, SCGF III Management, LLC may be deemed to share voting and dispositive power with respect to the shares held by Sequoia Capital Growth Partners III, L.P., Sequoia Capital Growth Fund III, L.P. and Sequoia Capital Growth III Principals Fund, LLC.
F3Each 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.
F4The Series B preferred stock converted into issuer common stock on a 1-for-1 basis and has no expiration date.
F5SC IX.I Management, LLC is the general partner of each of Sequoia Capital IX, L.P. and Sequoia Capital Entrepreneurs Annex Fund, L.P.
F6Reflects a 2.5-for-1 forward stock split which became effective on April 10, 2017.
F7SCFF Management, LLC is the general partner of Sequoia Capital Franchise Fund L.P. and Sequoia Capital Franchise Partners, L.P. The managing members of SCFF Management are Douglas M. Leone and Michael J. Moritz. Each of the managing members of SCFF III Management, LLC may be deemed to share beneficial ownership of the shares held by the Sequoia Capital Franchise Fund L.P. and Sequoia Capital Franchise Partners, L.P.

Remarks

Form 1 of 2.