Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock, $0.001 par value per share^F1,F2	Nov 23, 2016	S	202,038	$11.81	D	3,944,639	I	By Funds
Common Stock, $0.001 par value per share^F1,F2	Nov 28, 2016	S	187,750	$11.66	D	3,756,899	I	By Funds

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The sale of the shares was made by Cross Atlantic Technology Fund II, L.P. in connection with its maturity and its obligation to make distributions to its partners.
F2Consists of 340,861 shares (after sale on November 23, 2016) and 153,111 shares (after sale on November 28, 2016) held by Cross Atlantic Technology Fund, II, L.P., 1,610,880 shares held by The Co-Investment Fund II, L.P. and 1,922,898 shares held by The Co-Investment 2000 Fund, L.P. (the "Funds"). Donald R. Caldwell, a director of the Issuer, is a director, shareholder and officer of Cross Atlantic Capital Partners II, Inc., which is the general partner of XATF Management II, L.P., which is the general partner of Cross Atlantic Technology Fund II, L.P. Donald R. Caldwell, is director, shareholder and officer of Co-Invest Capital Partners, Inc., which is the general partner Co-Invest Management, L.P., which is the general partner of The Co-Investment 2000 Fund, L.P. Donald R. Caldwell is a director, shareholder and officer of Co-Invest Capital Partners II, Inc., which is the general partner of Co-Invest Management II, L.P., which is the general partner of The Co-Investment Fund II, L.P.

Remarks

The Reporting Persons disclaim beneficial ownership of the shares held by the Funds except to the extent of each Reporting Person's own pecuniary interest therein.