Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series A-4 Preferred Stock^F3,F4,F1,F2	—	May 1, 2018	C	545,174	D	—	—	Class B common stock	583,056	0	I
Series A-4 Preferred Stock^F3,F5,F1,F2	—	May 1, 2018	C	239,996	D	—	—	Class B common stock	256,672	0	I
Series A-4 Preferred Stock^F3,F6,F1,F2	—	May 1, 2018	C	294,031	D	—	—	Class B common stock	314,462	0	I
Series A-4 Preferred Stock^F3,F7,F1,F2	—	May 1, 2018	C	12,616	D	—	—	Class B common stock	13,491	0	I
Series A-4 Preferred Stock^F3,F8,F1,F2	—	May 1, 2018	C	34,483	D	—	—	Class B common stock	36,877	0	I
Series C Preferred Stock^F3,F4,F9,F2	—	May 1, 2018	C	360,537	D	—	—	Class B common stock	360,537	0	I
Series C Preferred Stock^F3,F5,F9,F2	—	May 1, 2018	C	158,715	D	—	—	Class B common stock	158,715	0	I
Series C Preferred Stock^F3,F6,F9,F2	—	May 1, 2018	C	194,453	D	—	—	Class B common stock	194,453	0	I
Series C Preferred Stock^F3,F7,F9,F2	—	May 1, 2018	C	8,344	D	—	—	Class B common stock	8,344	0	I
Series C Preferred Stock^F3,F8,F9,F2	—	May 1, 2018	C	22,806	D	—	—	Class B common stock	22,806	0	I
Class B Common Stock^F3,F10,F4,F2	—	May 1, 2018	C	583,056	A	—	—	Class A common stock	583,056	13,906,902	I
Class B Common Stock^F3,F10,F5,F2	—	May 1, 2018	C	256,672	A	—	—	Class A common stock	256,672	6,122,102	I
Class B Common Stock^F3,F10,F6,F2	—	May 1, 2018	C	314,462	A	—	—	Class A common stock	314,462	7,500,479	I
Class B Common Stock^F3,F10,F7,F2	—	May 1, 2018	C	13,491	A	—	—	Class A common stock	13,491	321,875	I
Class B Common Stock^F3,F10,F8,F2	—	May 1, 2018	C	36,877	A	—	—	Class A common stock	36,877	879,649	I
Class B Common Stock^F3,F10,F4,F2	—	May 1, 2018	C	360,537	A	—	—	Class A common stock	360,537	13,906,902	I
Class B Common Stock^F3,F10,F5,F2	—	May 1, 2018	C	158,715	A	—	—	Class A common stock	158,715	6,122,102	I
Class B Common Stock^F3,F10,F6,F2	—	May 1, 2018	C	194,453	A	—	—	Class A common stock	194,453	7,500,479	I
Class B Common Stock^F3,F10,F7,F2	—	May 1, 2018	C	8,344	A	—	—	Class A common stock	8,344	321,875	I
Class B Common Stock^F3,F10,F8,F2	—	May 1, 2018	C	22,806	A	—	—	Class A common stock	22,806	879,649	I

Explanation of responses

F1The Series A-4 Preferred Stock converted into Class B common stock of the issuer on a one-for-1.06949 basis and had no expiration date.
F10On May 3, 2018, the Reporting Persons filed a Form 4 that incorrectly stated in column 9 the number of Class B Common Stock beneficially owned following the reported transactions.
F2Each share of the issuer's Class B common stock will convert into 1 share of the issuer's Class A common stock (a) at the option of the holder and (b) automatically upon (i) any transfer which occurs after the closing of the issuer's IPO, except for certain permitted transfers, or (ii) the date that is the earliest of (x) the date specified by a vote of the holders of not less than a majority of the outstanding shares of Class B common stock, (y) seven years from the effective date of the IPO and (z) the date that the total number of shares of outstanding Class B common stock ceases to represent at least 15% of all outstanding shares of the issuer's common stock, and has no expiration date.
F3This amended report is the third of five filings made on this 3rd day of July, 2018, to amend a report for transactions that occurred on May 1, 2018. See footnote 10 for a further discussion of such amended report. The amounts reflected in this column (9) are inclusive of the number of derivative securities beneficially owned following the transactions reported across all five filings.
F4Held directly by Insight Venture Partners VII, L.P.
F5Held directly by Insight Venture Partners (Cayman) VII, L.P.
F6Held directly by Insight Venture Partners Coinvestment Fund II, L.P.
F7Held directly by Insight Venture Partners VII (Co-Investors), L.P.
F8Held directly by Insight Venture Partners (Delaware) VII, L.P.
F9The Series A-3 Preferred Stock converted into Class B common stock of the issuer on a one-for-one basis and had no expiration date.