Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series D Preferred Stock^F3,F4,F1,F2	—	May 1, 2018	C	5,212,395	D	—	—	Class B common stock	5,212,395	0	I
Series D Preferred Stock^F3,F5,F1,F2	—	May 1, 2018	C	2,294,610	D	—	—	Class B common stock	2,294,610	0	I
Series D Preferred Stock^F3,F6,F1,F2	—	May 1, 2018	C	2,811,230	D	—	—	Class B common stock	2,811,230	0	I
Series D Preferred Stock^F3,F7,F1,F2	—	May 1, 2018	C	120,645	D	—	—	Class B common stock	120,645	0	I
Series D Preferred Stock^F3,F8,F1,F2	—	May 1, 2018	C	329,700	D	—	—	Class B common stock	329,700	0	I
Series E Preferred Stock^F3,F4,F9,F2	—	May 1, 2018	C	948,628	D	—	—	Class B common stock	948,628	0	I
Series E Preferred Stock^F3,F5,F9,F2	—	May 1, 2018	C	417,606	D	—	—	Class B common stock	417,606	0	I
Series E Preferred Stock^F3,F6,F9,F2	—	May 1, 2018	C	511,628	D	—	—	Class B common stock	511,628	0	I
Series E Preferred Stock^F3,F7,F9,F2	—	May 1, 2018	C	21,957	D	—	—	Class B common stock	21,957	0	I
Series E Preferred Stock^F3,F8,F9,F2	—	May 1, 2018	C	60,003	D	—	—	Class B common stock	60,003	0	I
Class B Common Stock^F3,F4,F2	—	May 1, 2018	C	5,212,395	A	—	—	Class A common stock	5,212,395	10,177,099	I
Class B Common Stock^F3,F5,F2	—	May 1, 2018	C	2,294,610	A	—	—	Class A common stock	2,294,610	4,493,702	I
Class B Common Stock^F3,F6,F2	—	May 1, 2018	C	2,811,230	A	—	—	Class A common stock	2,811,230	5,508,363	I
Class B Common Stock^F3,F7,F2	—	May 1, 2018	C	120,645	A	—	—	Class A common stock	120,645	262,341	I
Class B Common Stock^F3,F8,F2	—	May 1, 2018	C	329,700	A	—	—	Class A common stock	329,700	670,834	I
Class B Common Stock^F3,F4,F2	—	May 1, 2018	C	948,628	A	—	—	Class A common stock	948,628	10,177,099	I
Class B Common Stock^F3,F5,F2	—	May 1, 2018	C	417,606	A	—	—	Class A common stock	417,606	4,493,702	I
Class B Common Stock^F3,F6,F2	—	May 1, 2018	C	511,628	A	—	—	Class A common stock	511,628	5,508,363	I
Class B Common Stock^F3,F7,F2	—	May 1, 2018	C	21,957	A	—	—	Class A common stock	21,957	262,341	I
Class B Common Stock^F3,F8,F2	—	May 1, 2018	C	60,003	A	—	—	Class A common stock	60,003	670,834	I

Explanation of responses

F1The Series D Preferred Stock converted into Class B common stock of the issuer on a one-for-one basis and had no expiration date.
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 report is the fourth of five filings made on this 3rd day of May, 2018, to report transactions that occurred on May 1, 2018. The amounts reflected in this column (9) represent 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 E Preferred Stock converted into Class B common stock of the issuer on a one-for-one basis and had no expiration date.