Date Filer Title Filing Type Shares Traded Price Total Held
March 23, 2011 CFO Form 4 Conversion of derivative security 8 -- --
March 23, 2011 Director Form 4 Conversion of derivative security 5,000 $2.40 8,000
March 23, 2011 Director Form 4 Conversion of derivative security 12 -- --
March 23, 2011 Director Form 4 Conversion of derivative security 34,583 $2.40 34,583
March 23, 2011 Director Form 4 Conversion of derivative security 83 -- --
March 23, 2011 CEO Form 4 Conversion of derivative security 17,083 $2.40 143,745
March 23, 2011 CEO Form 4 Conversion of derivative security 41 -- --
March 23, 2011 Controller & CAO Form 4 Conversion of derivative security 3,333 $2.40 11,073
March 23, 2011 Controller & CAO Form 4 Conversion of derivative security 8 -- --
February 25, 2011 CMO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 70,000 $2.49 255,000
February 25, 2011 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 40,000 $2.49 145,000
February 25, 2011 CFO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 10,000 -- 35,000
February 25, 2011 CFO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 70,000 $2.49 170,000
February 25, 2011 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 40,000 $2.49 70,000
February 25, 2011 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 50,000 $2.49 219,911
February 25, 2011 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 15,000 $2.49 45,000
February 25, 2011 CEO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 180,000 $2.49 845,000
February 25, 2011 CAO Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 16,667 $2.49 38,067
February 25, 2011 Director Form 4 Grant, award or other acquisition pursuant to Rule 16b-3(d) 50,000 $2.49 157,009
January 14, 2011 Chief Medical Officer Form 4 Open market or private purchase of non-derivative or derivative security 6 $1,197.80 6
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

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.