Date Filer Title Filing Type Shares Traded Price Total Held
January 14, 2011 Chief Medical Officer Form 4 Open market or private purchase of non-derivative or derivative security 2,499 -- 2,500
January 14, 2011 CFO Form 4 Open market or private purchase of non-derivative or derivative security 8 $1,197.80 8
January 14, 2011 CFO Form 4 Open market or private purchase of non-derivative or derivative security 3,333 -- 3,333
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 12 $1,197.80 12
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 4,999 -- 5,000
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 41 $1,197.80 41
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 17,083 -- 17,083
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 83 $1,197.80 83
January 14, 2011 Director Form 4 Open market or private purchase of non-derivative or derivative security 34,583 -- 34,583
January 14, 2011 CEO Form 4 Open market or private purchase of non-derivative or derivative security 41 $1,197.80 41
January 14, 2011 CEO Form 4 Open market or private purchase of non-derivative or derivative security 17,083 -- 17,083
January 14, 2011 Controller & CAO Form 4 Open market or private purchase of non-derivative or derivative security 8 $1,197.80 8
January 14, 2011 Controller & CAO Form 4 Open market or private purchase of non-derivative or derivative security 3,333 -- 3,333
December 6, 2010 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 30,000 $2.81 30,000
September 22, 2010 Chief Medical Officer Form 4 Open market or private purchase of non-derivative or derivative security 1,550 $3.03 28,087
September 22, 2010 Chief Medical Officer Form 4 Open market or private purchase of non-derivative or derivative security 100 $3.04 28,187
September 16, 2010 Director Form 4 Open market or private purchase of non-derivative or derivative security 5,000 $3.10 15,000
August 10, 2010 Director Form 4 Open market or private purchase of non-derivative or derivative security 3,000 $3.35 3,000
July 29, 2010 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 30,000 $3.42 30,000
July 6, 2010 Chief Financial Officer Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 25,000 -- 25,000
July 6, 2010 Chief Financial Officer Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 100,000 $3.39 100,000
May 7, 2010 President & CEO Form 4 Open market or private purchase of non-derivative or derivative security 4,000 $3.95 126,662
April 13, 2010 Interim Chief Accounting Off. Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 700 -- 7,700
April 13, 2010 Interim Chief Accounting Off. Form 4 Exercise or conversion of derivative security exempted pursuant to Rule 16b-3 700 -- 21,400
February 19, 2010 Chief Medical Officer Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 7,537 $2.94 26,537

For recent transactions, including derivative transactions, see our Section 16 SEC filings page.

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