Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F1,F2	Feb 12, 2018	S	255,000	$2.3205	D	3,134,572	I	See footnote
Common Stock^F3,F2	Feb 13, 2018	S	150,000	$2.3419	D	2,984,572	I	See footnote
Common Stock^F4,F2	Feb 14, 2018	S	355,000	$2.7588	D	2,629,572	I	See footnote

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.08 to $2.42, inclusive. The Designated Filer undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote 1 to this Form 4.
F2Shares are owned directly by BCPI I, L.P. ("BCPI I") for itself and as nominee for BCPI Founders' Fund I, L.P. ("BCPI FF") and for other individuals and entities. BCPI Partners I, L.P. ("BCPI GP"), the general partner of both BCPI I and BCPI FF, may be deemed to have the sole voting and dispositive power over such shares of the Issuer's Common Stock. BCPI Corporation ("BCPI Corp"), the Designated Filer and general partner of BCPI GP, may be deemed to have the sole voting and dispositive power over such shares of the Issuer's Common Stock. Michael Eisenberg ("Eisenberg") and Arad Naveh ("Naveh"), in their capacities as directors of BCPI Corp, may be deemed to have shared voting and dispositive power over such shares of the Issuer's Common Stock.
F3The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.30 to $2.39, inclusive. The Designated Filer undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote 3 to this Form 4.
F4The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $2.39 to $2.98, inclusive. The Designated Filer undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote 4 to this Form 4.

Remarks

Each Reporting Person disclaims the existence of a "group". Each of BCPI GP and its partners, BCPI Corp, Eisenberg and Naveh disclaims beneficial ownership of any of these shares except to the extent of any pecuniary interest therein, and the filing of this report is not an admission that BCPI GP and its partners, BCPI Corp, Eisenberg or Naveh is the beneficial owner of these shares for purposes of Section 16 or any other purpose.