He never bought any shares on the 24th, look at his overall share count.
Common Stock 04/20/2012 S (1) 352,156 D $1.9923 (2) 8,279,030 Common Stock 04/23/2012 S (1) 154,380 D $1.8419 (3) 8,124,650 Common Stock 04/24/2012 S (1) 478,983 A $1.735 (4) 7,645,667