Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2,F3	Jul 2, 2018	C	67,036	—	A	67,036	I	See footnote
Common Stock^F1,F3,F4	Jul 2, 2018	C	1,340,698	—	A	1,340,698	I	See footnote
Common Stock^F1,F3,F4	Jul 2, 2018	C	1,133,670	—	A	2,474,368	I	See footnote

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	D/I
Series A-1 Preferred Stock^F1,F2,F3	—	Jul 2, 2018	C	67,036	D	—	—	Common Stock	67,036	I
Series A-1 Preferred Stock^F1,F3,F4	—	Jul 2, 2018	C	1,340,698	D	—	—	Common Stock	1,340,698	I
Series A-2 Preferred Stock^F1,F3,F4	—	Jul 2, 2018	C	1,133,670	D	—	—	Common Stock	1,133,670	I

Explanation of responses

F1The Issuer's preferred stock automatically converted into an equal number of shares of Issuer's common stock immediately upon the closing of the Issuer's initial public offering and has no expiration date.
F2Shares held by Lighspeed Affiliates X, L.P., or Lightspeed Affiliates.
F3Lightspeed General Partner X, L.P., or Lightspeed GP X, is the general partner of Lightspeed X and Lightspeed Affiliates. Lightspeed Ultimate General Partner X, Ltd., or Lightspeed UGP X, is the general partner of Lightspeed GP X. Christopher J. Schaepe, Barry Eggers, Ravi Mhatre, Peter Nieh and Jeremy Liew are the directors of Lightspeed UGP X and share voting and dispositive power with respect to the shares held by Lightspeed X. Messrs. Schaepe, Eggers, Liew, Mhatre and Nieh disclaim beneficial ownership of the shares held by Lightspeed X and Lightspeed Affiliates except to the extent of their pecuniary interest therein.
F4Shares held by Lightspeed Venture Partners X, L.P., or Lightspeed X.