Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Class A Common Stock^F1,F2	Apr 5, 2017	S	100,000	$17.6235	D	24,947	I	By Barry Eggers Revocable Trust dtd 6/4/2008
Class A Common Stock^F2	Apr 5, 2017	G	8,600	$0.00	D	16,347	I	By Barry Eggers Revocable Trust dtd 6/4/2008
Class A Common Stock^F1,F3	Apr 5, 2017	S	43,074	$17.6235	D	0	I	By Eggers Investments, L.P.
Class A Common Stock^F4,F5	Apr 5, 2017	S	50,000	$17.4978	D	114,947	I	By The Schaepe-Chiu Living Trust Dated 11/5/1997
Class A Common Stock^F6,F5	Apr 5, 2017	S	50,000	$17.6607	D	64,947	I	By The Schaepe-Chiu Living Trust Dated 11/5/1997
Class A Common Stock^F7,F15	Apr 5, 2017	S	14,723	$17.5093	D	155,179	D
Class A Common Stock^F7,F8	Apr 5, 2017	S	46,271	$17.5093	D	29,590	I	By Nieh Family Investments I LP - Fund 1
Class A Common Stock^F9,F15	Apr 6, 2017	S	55,410	$18.1001	D	99,769	D
Class A Common Stock^F9,F8	Apr 6, 2017	S	29,590	$18.1001	D	0	I	By Nieh Family Investments I LP - Fund 1
Class A Common Stock^F10,F11	holding	—	—		—	4,631,331	I	By Lightspeed Venture Partners VII, L.P.
Class A Common Stock^F12,F13	holding	—	—		—	751,928	I	By Lightspeed Venture Partners VIII, L.P.
Class A Common Stock^F14	holding	—	—		—	86,148	I	By Schaepe-Chiu Investments I LP - Fund 1

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1These sales were executed in multiple trades at prices ranging from $17.10 to $17.995. The price reported above reflects the weighted average sale price. Mr. Eggers hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
F10The shares are held of record by Lightspeed VII.
F11Lightspeed Ultimate General Partner VII, Ltd. is the sole general partner of Lightspeed General Partner VII, L.P. ("LGP VII"), which is the sole general partner of Lightspeed VII. The individual directors of Lightspeed Ultimate General Partner VII, Ltd. are Christopher J. Schaepe, Barry Eggers, Ravi Mhatre and Peter Nieh. Messrs. Schaepe, Eggers, Mhatre, and Nieh disclaim their beneficial ownership of the shares except to the extent of their pecuniary interest therein.
F12The shares are held of record by Lightspeed VIII.
F13Lightspeed Ultimate General Partner VIII, Ltd. is the sole general partner of Lightspeed General Partner VIII, L.P. ("LGP VIII"), which is the sole general partner of Lightspeed VIII. The individual directors of Lightspeed Ultimate General Partner VIII, Ltd. are Christopher J. Schaepe, Barry Eggers, Ravi Mhatre and Peter Nieh. Messrs. Schaepe, Eggers, Mhatre, and Nieh disclaim their beneficial ownership of the shares except to the extent of their pecuniary interest therein.
F14The shares are held of record by Schaepe-Chiu Investments I LP - Fund 1. Christopher J. Schaepe serves as co-trustee of the general partner of such entity.
F15The shares are held of record by Peter Nieh.
F2The shares are held of record by Barry Eggers Revocable Trust dtd 6/4/2008, for which Barry Eggers serves as trustee.
F3The shares are held of record by Eggers Investments, L.P. Barry Eggers serves as trustee of the general partner of such entity.
F4These sales were executed in multiple trades at prices ranging from $17.27 to $17.73. The price reported above reflects the weighted average sale price. Mr. Schaepe hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
F5The shares are held of record by The Schaepe-Chiu Living Trust Dated November 5, 1997, for which Christopher J. Schaepe serves as co-trustee.
F6These sales were executed in multiple trades at prices ranging from $17.68 to $17.99. The price reported above reflects the weighted average sale price. Mr. Schaepe hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
F7These sales were executed in multiple trades at prices ranging from $17.24 to $17.87. The price reported above reflects the weighted average sale price. Mr. Nieh hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.
F8The shares are held of record by Nieh Family Investments LP - Fund 1. Peter Nieh serves as co-trustee of the general partner of such entity.
F9These sales were executed in multiple trades at prices ranging from $17.85 to $18.26. The price reported above reflects the weighted average sale price. Mr. Nieh hereby undertakes to provide full information regarding the number of shares and prices at which these sales were effected, upon request, to the staff of the Securities and Exchange Commission, the Issuer or a security holder of the Issuer.

Remarks

Mr. Mhatre is a director of the Issuer and files a separate report on Form 4 with respect to his beneficial ownership of Issuer securities held by the Lightspeed entities.