Security	Date	Code	Shares	Price	A/D	Owned after	D/I	Nature of ownership
Common Stock^F2,F3	Dec 20, 2012	S	226,446	$10.995	D	11,864,249	I	See footnote.
Common Stock^F2,F4	Dec 20, 2012	S	1,463	$10.995	D	76,663	I	See footnote.
Common Stock^F2,F5	Dec 20, 2012	S	2,960	$10.995	D	155,099	I	See footnote.
Common Stock^F6,F3	Dec 21, 2012	S	197,555	$10.9652	D	11,666,694	I	See footnote.
Common Stock^F6,F4	Dec 21, 2012	S	1,277	$10.9652	D	75,386	I	See footnote.
Common Stock^F6,F5	Dec 21, 2012	S	2,582	$10.9652	D	152,517	I	See footnote.
Common Stock^F7,F3	Dec 24, 2012	S	54,629	$10.8287	D	11,612,065	I	See footnote.
Common Stock^F7,F4	Dec 24, 2012	S	353	$10.8287	D	75,033	I	See footnote.
Common Stock^F7,F5	Dec 24, 2012	S	714	$10.8287	D	151,803	I	See footnote.

Table II — derivative securities

No Table II lines on this filing.

Explanation of responses

F1The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 Sales Plan adopted by the Artiman Funds on August 30, 2012.
F2The price reported in column 4 is a weighted average price ranging from $10.69 to $11.31, inclusive.
F3Securities directly held by Artiman Ventures, L.P. Shah and Mundkur are the Managing Members of Artiman, L.L.C., the General Partner of Artiman Ventures, L.P., and disclaim beneficial ownership of the securities held by Artiman Ventures, L.P. except to the extent of their pecuniary interest therein, if any.
F4Securities directly held by Artiman Ventures Side Fund, L.P. Shah and Mundkur are the Managing Members of Artiman, L.L.C., the General Partner of Artiman Ventures Side Fund, L.P., and disclaim beneficial ownership of the securities held by Artiman Ventures Side Fund, L.P. except to the extent of their pecuniary interest therein, if any.
F5Securities directly held by Artiman Ventures Side Fund II, L.P. Shah and Mundkur are the Managing Members of Artiman, L.L.C., the General Partner of Artiman Ventures Side Fund II, L.P., and disclaim beneficial ownership of the securities held by Artiman Ventures Side Fund II, L.P. except to the extent of their pecuniary interest therein, if any.
F6The price reported in column 4 is a weighted average price ranging from $10.79 to $11.17, inclusive.
F7The price reported in column 4 is a weighted average price ranging from $10.75 to $11.06, inclusive.

Remarks

Amit Shah ("Shah") and Yatin Mundkur ("Mundkur") were inadvertently omitted as reporting persons from the original Form 4 filing. As of October 1, 2012, Shah and Mundkur were Managing Members of Artiman, L.L.C., the General Partner of each of Artiman Ventures, L.P., Artiman Ventures Side Fund, L.P., and Artiman Ventures Side Fund II, L.P. (together, the "Artiman Funds"). Shah and Mundkur disclaim beneficial ownership of the securities held by the Artiman Funds except to the extent of their pecuniary interest therein, if any.