Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Nov 16, 2018	J	2,252,137	—	D	2,252,137	I	By Menlo Ventures IX, L.P.
Common Stock^F1,F2	Nov 16, 2018	J	74,317	—	D	74,317	I	By Menlo Entrepreneurs Fund IX, L.P.
Common Stock^F1,F2	Nov 16, 2018	J	10,689	—	D	10,689	I	By Menlo Entrepreneurs Fund IX-A, L.P.
Common Stock^F1,F2	Nov 16, 2018	J	47,269	—	D	47,268	I	By MMEF IX, L.P.
Common Stock^F1,F2	Nov 16, 2018	J	581,249	—	A	581,249	I	By MV Management IX, L.L.C.
Common Stock^F1,F2	Nov 16, 2018	J	581,249	—	D	0	I	By MV Management IX, L.L.C.

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Represents a pro rata in kind distribution of shares of Common Stock, without consideration, by each of Menlo Ventures IX, L.P., Menlo Entrepreneurs Fund IX, L.P., Menlo Entrepreneurs Fund IX(A), L.P. and MMEF IX, L.P. to their respective limited partners, and their general partner, MV Management IX, L.L.C.
F2MV Management IX, L.L.C. is the general partner of Menlo Ventures IX, L.P., Menlo Entrepreneurs Fund IX, L.P., Menlo Entrepreneurs Fund IX(A), L.P. and MMEF IX, L.P. (collectively, the "Menlo Funds"). MV Management IX, L.L.C. exercises voting and dispositive power over the shares held by each of the Menlo Funds. Each of the reporting persons disclaims beneficial ownership of the shares reported herein, except to the extent of its proportionate pecuniary interest therein.
F3Represents the receipt of shares of Common Stock by MV Management IX, L.L.C. in the distributions described in greater detail in the footnote above.
F4Represents a pro-rata in-kind distribution of shares of Common Stock by MV Management IX, L.L.C., without consideration, to its members.