 Of the other two executives , William Sorin pleaded guilty to criminal charges and was sentenced to a year in prison in 2007 . David Kreinberg cooperated with prosecutors , repaid $ 2 @.@ 4 million to the SEC , and in 2011 was sentenced to the " time served " of the minimal period he had originally been in custody . While over a hundred companies were investigated or charged with options backdating , Comverse was one of the most known cases , and in the words of a pair of financial writers , " Comverse was the poster child for stock option fraud . " 
