Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F8,F9	May 27, 2016	S	2,700	$12.25	D	6,561	I	By William B. Elmore Revocable Trust
Common Stock^F9	May 31, 2016	S	1,931	$12.42	D	4,630	I	By William B. Elmore Revocable Trust
Common Stock^F1	holding	—	—		—	6,628,097	I	By Foundation Capital VI, L.P.
Common Stock^F1	holding	—	—		—	82,732	I	By: Foundation Capital VI Principals Fund, LLC
Common Stock^F2	holding	—	—		—	9,055	I	By Holland/Yates Family Trust dtd 7/23/1999
Common Stock^F3	holding	—	—		—	1,509	I	By The Holland Childrens Trust
Common Stock^F4	holding	—	—		—	2,370	I	By Koontz Revocable Trust U/A/D 6/29/1998
Common Stock^F5	holding	—	—		—	4,111	I	By Michael N. & Mary G. Schuh 1990 Family Trust
Common Stock^F6	holding	—	—		—	9,331	I	By Vassallo Family Revocable Trust dated 7/15/02
Common Stock^F7	holding	—	—		—	4,440	I	By Moldow Family Trust dated 11/11/2003

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1Foundation Capital Management Co. VI, LLC is the sole manager of Foundation Capital VI, L.P. and Foundation Capital VI Principals Fund, LLC and has sole voting and investment power with respect to the shares held by Foundation Capital VI, L.P. and Foundation Capital VI Principals Fund, LLC. William B. Elmore, Paul G. Koontz, Michael N. Schuh, Paul R. Holland, Steve P. Vassallo, Charles P. Moldow and Warren M. Weiss are managing members of Foundation Capital Management Co. VI, LLC, and may be deemed to share voting and investment power over the shares owned by Foundation Capital VI, L.P. and Foundation Capital VI Principals Fund, LLC. Each of the managing members of Foundation Capital Management Co. VI, LLC disclaims beneficial ownership in the shares held by the aforementioned entities except to the extent of his or her pecuniary interest therein.
F2The shares are held by the Holland/Yates Family Trust dtd 7/23/1999 (the "Holland Family Trust"). Paul R. Holland is a trustee of the Holland Family Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Holland Family Trust except to the extent of his proportionate pecuniary interest therein.
F3The shares are held by The Holland Children's Trust (the "Holland Children's Trust"). Paul R. Holland is a trustee of the Holland Children's Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Holland Children's Trust except to the extent of his proportionate pecuniary interest therein.
F4The shares are held by the Koontz Revocable Trust U/A/D 6/29/1998 (the "Koontz Trust"). Paul G. Koontz is a trustee of the Koontz Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Koontz Trust except to the extent of his proportionate pecuniary interest therein.
F5The shares are held by the Michael N. & Mary G. Schuh 1990 Family Trust (the "Schuh Trust"). Michael N. Schuh is a trustee of the Schuh Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Schuh Trust except to the extent of his proportionate pecuniary interest therein
F6The shares are held by the Vassallo Family Revocable Trust dated 7/15/02 (the "Vassallo Trust"). Steve P. Vassallo is a trustee of the Vassallo Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Vassallo Trust except to the extent of his proportionate pecuniary interest therein.
F7The shares are held by the Moldow Family Trust dated 11/11/2003 (the "Moldow Family Trust"). Charles Moldow is a trustee of the Moldow Family Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Moldow Family Trust except to the extent of his proportionate pecuniary interest therein.
F8Price reflected is the weighted-average sale price for shares sold. The range of sale prices for the transactions reported was $12.25 to $12.27 per share. The 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.
F9The shares are held by the William B. Elmore Revocable Trust (the "Elmore Trust"). William B. Elmore is a trustee of the Elmore Trust. The Reporting Person disclaims beneficial ownership of the shares held by the Elmore Trust except to the extent of his proportionate pecuniary interest therein.