Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Nov 17, 2017	C	47,111	—	A	1,014,895	I	By: Foundry Group Select Fund, L.P.
Common Stock^F1,F2	Nov 17, 2017	C	16,333	—	A	1,031,228	I	By: Foundry Group Select Fund, L.P.
Common Stock^F1,F2	Nov 17, 2017	C	1,306,620	—	A	2,337,848	I	By: Foundry Group Select Fund, L.P.
Common Stock^F1,F2	Nov 17, 2017	C	490,503	—	A	2,828,351	I	By: Foundry Group Select Fund, L.P.
Common Stock^F1	Nov 17, 2017	C	5,245,172	—	A	5,245,172	I	By: Foundry Venture Capital 2007, L.P.
Common Stock^F1	Nov 17, 2017	C	1,735,537	—	A	6,980,709	I	By: Foundry Venture Capital 2007, 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,F1	—	Nov 17, 2017	C	47,111	D	—	—	Common Stock	47,111	I
Series A-1 Preferred Stock^F2,F1	—	Nov 17, 2017	C	16,333	D	—	—	Common Stock	16,333	I
Series A-1 Preferred Stock^F3,F1	—	Nov 17, 2017	C	5,245,172	D	—	—	Common Stock	5,245,172	I
Series B Preferred Stock^F3,F1	—	Nov 17, 2017	C	1,735,537	D	—	—	Common Stock	1,735,537	I
Series C Preferred Stock^F2,F1	—	Nov 17, 2017	C	1,306,620	D	—	—	Common Stock	1,306,620	I
Series Preferred Stock^F2,F1	—	Nov 17, 2017	C	490,503	D	—	—	Common Stock	490,503	I

Explanation of responses

F1Each share of Series A Preferred Stock, Series A-1 Preferred Stock, Series B Preferred Stock, Series C Preferred Stock and Series D Preferred Stock converted into shares of the Issuer's common stock upon the closing of the Issuer's initial public offering, on a one-for-one basis and had no expiration date.
F2The shares are held by Foundry Group Select Fund, L.P. The general partner of Foundry Group Select Fund, L.P. is Foundry Select Fund GP, LLC and has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Select Fund GP, LLC and share voting and dispositive power over these shares. Each of Foundry Select Fund GP, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein.
F3The shares are held by Foundry Venture Capital 2007, L.P. The general partner of Foundry Venture Capital 2007, L.P. is Foundry Venture 2007,LLC and has voting and dispositive power over these shares. Brad Feld, Seth Levine, Ryan McIntyre and Jason Mendelson are the managing members of Foundry Venture 2007, LLC and share voting and dispositive power over these shares. Each of Foundry Venture 2007, LLC, Mr. Feld, Mr. Levine, Mr. McIntyre and Mr. Mendelson disclaims beneficial ownership of the shares except to the extent of his or its respective pecuniary interest therein.