Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F3	Jan 18, 2019	C	1,423,663	$0.00	A	1,423,663	I	Mobius Technology Ventures VI, L.P.
Class A Common Stock^F4	Jan 18, 2019	C	1,531,414	$0.00	A	1,531,414	I	SOFTBANK U.S. Ventures VI L.P.
Class A Common Stock^F5	Jan 18, 2019	C	58,392	$0.00	A	58,392	I	Mobius Technology Ventures Side Fund VI L.P.
Class A Common Stock^F6	Jan 18, 2019	C	55,624	$0.00	A	55,624	I	Mobius Technology Ventures Advisors Fund VI L.P.
Class A Common Stock^F1,F3	Jan 22, 2019	S	69,558	$11.86	D	1,354,105	I	Mobius Technology Ventures VI, L.P.
Class A Common Stock^F1,F4	Jan 22, 2019	S	74,603	$11.86	D	1,456,811	I	SOFTBANK U.S. Ventures VI L.P.
Class A Common Stock^F1,F5	Jan 22, 2019	S	2,845	$11.86	D	55,547	I	Mobius Technology Ventures Side Fund VI L.P.
Class A Common Stock^F1,F6	Jan 22, 2019	S	2,710	$11.86	D	52,914	I	Mobius Technology Ventures Advisors Fund VI L.P.
Class A Common Stock^F3	Jan 22, 2019	S	46	$12.42	D	1,354,059	I	Mobius Technology Ventures VI, L.P.
Class A Common Stock^F4	Jan 22, 2019	S	51	$12.42	D	1,456,760	I	SOFTBANK U.S. Ventures VI L.P.
Class A Common Stock^F5	Jan 22, 2019	S	2	$12.42	D	55,545	I	Mobius Technology Ventures Side Fund VI L.P.
Class A Common Stock^F6	Jan 22, 2019	S	1	$12.42	D	52,913	I	Mobius Technology Ventures Advisors Fund VI L.P.
Class A Common Stock^F2,F3	Jan 23, 2019	S	21,241	$11.94	D	1,332,818	I	Mobius Technology Ventures VI, L.P.
Class A Common Stock^F2,F4	Jan 23, 2019	S	22,782	$11.94	D	1,433,978	I	SOFTBANK U.S. Ventures VI L.P.
Class A Common Stock^F2,F5	Jan 23, 2019	S	869	$11.94	D	54,676	I	Mobius Technology Ventures Side Fund VI L.P.
Class A Common Stock^F2,F6	Jan 23, 2019	S	827	$11.94	D	52,086	I	Mobius Technology Ventures Advisors Fund VI L.P.

Table II — derivative securities

Security	Conv. / exercise price	Date	Code	Shares	A/D	Exercisable	Expires	Underlying	Underlying shares	Owned after	D/I
Series C Convertible Preferred Stock^F3,F7,F8	—	Jul 27, 2018	C	1,358,073	D	—	—	Class B Common Stock	1,358,073	0	I
Class B Common Stock^F3,F7,F9	—	Jul 27, 2018	C	1,358,073	A	—	—	Class A Common Stock	1,358,073	1,358,073	I
Series D Convertible Preferred Stock^F3,F7,F8	—	Jul 27, 2018	C	28,812	D	—	—	Class B Common Stock	28,812	0	I
Class B Common Stock^F3,F7,F9	—	Jul 27, 2018	C	28,812	A	—	—	Class A Common Stock	28,812	1,386,885	I
Series E Convertible Preferred Stock^F3,F7,F8	—	Jul 27, 2018	C	36,778	D	—	—	Class B Common Stock	36,778	0	I
Class B Common Stock^F3,F7,F9	—	Jul 27, 2018	C	36,778	A	—	—	Class A Common Stock	36,778	1,423,663	I
Series F Convertible Preferred Stock^F3,F7,F8	—	Jul 27, 2018	C	4,180	D	—	—	Class B Common Stock	4,180	0	I
Class B Common Stock^F3,F7,F9	—	Jul 27, 2018	C	4,180	A	—	—	Class A Common Stock	4,180	1,427,843	I
Series C Convertible Preferred Stock^F4,F7,F8	—	Jul 27, 2018	C	1,456,582	D	—	—	Class B Common Stock	1,456,582	0	I
Class B Common Stock^F4,F7,F9	—	Jul 27, 2018	C	1,456,582	A	—	—	Class A Common Stock	1,456,582	1,456,582	I
Series D Convertible Preferred Stock^F4,F7,F8	—	Jul 27, 2018	C	30,902	D	—	—	Class B Common Stock	30,902	0	I
Class B Common Stock^F4,F7,F9	—	Jul 27, 2018	C	30,902	A	—	—	Class A Common Stock	30,902	1,487,484	I
Series E Convertible Preferred Stock^F4,F7,F8	—	Jul 27, 2018	C	39,446	D	—	—	Class B Common Stock	39,446	0	I
Class B Common Stock^F4,F7,F9	—	Jul 27, 2018	C	39,446	A	—	—	Class A Common Stock	39,446	1,526,930	I
Series F Convertible Preferred Stock^F4,F7,F8	—	Jul 27, 2018	C	4,484	D	—	—	Class B Common Stock	4,484	0	I
Class B Common Stock^F4,F7,F9	—	Jul 27, 2018	C	4,484	A	—	—	Class A Common Stock	4,484	1,531,414	I
Series C Convertible Preferred Stock^F5,F7,F8	—	Jul 27, 2018	C	55,540	D	—	—	Class B Common Stock	55,540	0	I
Class B Common Stock^F5,F7,F9	—	Jul 27, 2018	C	55,540	A	—	—	Class A Common Stock	55,540	55,540	I
Series D Convertible Preferred Stock^F5,F7,F8	—	Jul 27, 2018	C	1,178	D	—	—	Class B Common Stock	1,178	0	I
Class B Common Stock^F5,F7,F9	—	Jul 27, 2018	C	1,178	A	—	—	Class A Common Stock	1,178	56,718	I
Series E Convertible Preferred Stock^F5,F7,F8	—	Jul 27, 2018	C	1,504	D	—	—	Class B Common Stock	1,504	0	I
Class B Common Stock^F5,F7,F9	—	Jul 27, 2018	C	1,504	A	—	—	Class A Common Stock	1,504	58,222	I
Series F Convertible Preferred Stock^F5,F7,F8	—	Jul 27, 2018	C	170	D	—	—	Class B Common Stock	170	0	I
Class B Common Stock^F5,F7,F9	—	Jul 27, 2018	C	170	A	—	—	Class A Common Stock	170	58,392	I
Series C Convertible Preferred Stock^F6,F7,F8	—	Jul 27, 2018	C	52,908	D	—	—	Class B Common Stock	52,908	0	I
Class B Common Stock^F6,F7,F9	—	Jul 27, 2018	C	52,908	A	—	—	Class A Common Stock	52,908	52,908	I
Series D Convertible Preferred Stock^F6,F7,F8	—	Jul 27, 2018	C	1,122	D	—	—	Class B Common Stock	1,122	0	I
Class B Common Stock^F6,F7,F9	—	Jul 27, 2018	C	1,122	A	—	—	Class A Common Stock	1,122	54,030	I
Series E Convertible Preferred Stock^F6,F7,F8	—	Jul 27, 2018	C	1,432	D	—	—	Class B Common Stock	1,432	0	I
Class B Common Stock^F6,F7,F9	—	Jul 27, 2018	C	1,432	A	—	—	Class A Common Stock	1,432	55,462	I

Explanation of responses

F1Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $11.40 to $12.39 per share. Each Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F2Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $11.82 - $12.08 per share. Each Reporting Person undertakes to provide, upon request by the SEC staff, the Issuer, or a security holder of the Issuer, full information regarding the number of shares sold at each separate price.
F3The securities are held by Mobius Technology Ventures VI, L.P. ("Mobius Technology VI").
F4The securities are held by SOFTBANK U.S. Ventures VI, L.P. ("Softbank").
F5The securities are held by Mobius Technology Ventures Side Fund VI, L.P. ("Mobius Side Fund").
F6The securities are held by Mobius Technology Ventures Advisors Fund VI, L.P. ("Mobius Advisors Fund").
F7Mobius VI LLC ("Mobius VI") is the General Partner of Mobius Technology VI, Softbank, Mobius Side Fund and Mobius Advisors Fund (collectively, the "Mobius Funds"). Mobius VI may be deemed to indirectly beneficially own the securities owned by the Mobius Funds. Bradley A. Feld and Jason A. Mendelson are Managing Directors of Mobius VI and each share voting and dispositive power over the securities held by Mobius Funds. Each reporting person disclaims beneficial ownership of these securities except to the extent of his or its respective pecuniary interest therein.
F8Each share of Series C Convertible Preferred Stock, Series D Convertible Preferred Stock and Series E Convertible Preferred Stock and Series F Convertible Preferred Stock automatically converted into the Issuer's Class B Common Stock, on a 1 for 1 basis, immediately prior to the Closing of the Issuer's initial public offering on July 27, 2018 ("IPO") and had no expiration date.
F9The Class B Common Stock is convertible into the Issuer's Class A Common Stock on a 1-for-1 basis at the holder's option or upon any transfer except for certain permitted transfers. All the outstanding shares of Class B common stock will convert automatically into shares of Class A common stock upon the date that is the earliest to occur of (i) immediately prior to the close of business on the fifth anniversary of July 27, 2018, (ii) immediately prior to the close of business on the date on which the outstanding shares of Class B common stock represent less than five percent (5%) of the aggregate number of shares of Class A common stock and Class B common stock then outstanding, (iii) the date and time, or the occurrence of an event, specified in a written conversion election delivered by KR Sridhar to the Issuer's Secretary or Chairman of the Board to so convert all shares of Class B common stock, or (iv) immediately following the date of the death of KR Sridhar.

Remarks

Form 1 of 2.