Insider Transactions

Date	Name	Title	Type	Filing	Shares Traded	Price Range	Total Held
Mar 07, 2012	KRAMLICH C RICHARD	Ten Percent Owner	Open market or private purchase of non-derivative or derivative security	Form 4	925,154	$5.70	4,584,311
Mar 07, 2012	NEW ENTERPRISE ASSOCIATES 11 LP	Ten Percent Owner	Open market or private purchase of non-derivative or derivative security	Form 4	925,154	$5.70	4,584,311
Mar 07, 2012	NEWHALL CHARLES W III	Ten Percent Owner	Open market or private purchase of non-derivative or derivative security	Form 4	925,154	$5.70	4,584,311
Mar 07, 2012	PERRY MARK W	Ten Percent Owner	Open market or private purchase of non-derivative or derivative security	Form 4	925,154	$5.70	4,584,311
Jun 05, 2007	BARRIS PETER J	Ten Percent Owner	Exercise of in-the-money or at-the-money derivative security	Form 4	15,077	$6.38	3,665,565
Jun 05, 2007	KRAMLICH C RICHARD	Ten Percent Owner	Exercise of in-the-money or at-the-money derivative security	Form 4	15,077	$6.38	3,665,565
Jun 05, 2007	NEWHALL CHARLES W III	Ten Percent Owner	Exercise of in-the-money or at-the-money derivative security	Form 4	15,077	$6.38	3,665,565
Jun 05, 2007	PERRY MARK W	Ten Percent Owner	Exercise of in-the-money or at-the-money derivative security	Form 4	15,077	$6.38	3,665,565
Jun 14, 2011	BARRETT M JAMES	Director, Ten Percent Owner	Other acquisition or disposition	Form 4	--	--	3,659,157
Jun 15, 2010	BARRETT M JAMES	Director, Ten Percent Owner	Other acquisition or disposition	Form 4	--	--	3,659,157

* Represents the number of non-derivative securities directly held. (I) Indicates that some (or all) of these shares are held indirectly.

Investors