X0303 4/A 2009-03-06 2009-03-09 0000790715 SIGMA DESIGNS INC SIGM 0001245500 TSUI KIT 1778 MCCARTHY BLVD. MILPITAS CA 95035 1 Managing Director Common Stock 2009-03-06 4 M 0 5000.0000 9.8900 A 156517.0000 D Common Stock 2009-03-06 4 M 0 5000.0000 5.4300 A 161517.0000 D Common Stock 2009-03-06 4 M 0 834.0000 3.4000 A 162351.0000 D Common Stock 2009-03-06 4 S 0 10834.0000 15.0700 D 151517.0000 D Employee Stock Option (Right to Buy) 9.8900 2009-03-06 4 M 0 5000.0000 0.0000 D Common Stock 5000.0000 9167.0000 D Employee Stock Option (Right to Buy) 5.4300 2009-03-06 4 M 0 5000.0000 0.0000 D Common Stock 5000.0000 3334.0000 D Employee Stock Option (Right to Buy) 3.4000 2009-03-06 4 M 0 834.0000 0.0000 D Common Stock 834.0000 9166.0000 D The 25,000 shares initially underlying this option began vesting on 10/28/2005 and vest as follows: (i) 20% on 10/28/2006; and (ii) the remaining 80% in equal monthly installments over the ensuing 48 months following 10/28/2006. The reported option expires in accordance with the following schedule: (a) the right to buy 5,000 shares expires on 3/15/2009; (b) the right to buy 5,000 shares expires on 3/15/2010; and (c) the right to buy the remaining 4,167 shares expires on 3/15/2011. The 25,000 shares initially underlying this option began vesting on 8/9/2004 and vest as follows: (i) 20% on 8/9/2005; and (ii) the remaining 80% in equal monthly installments over the ensuing 48 months following 8/9/2005. The reported option expires in accordance with the following schedule: (a) the right to buy 5,000 shares expires on 3/15/2009; and (b) the right to buy the remaining 3,334 shares expires on 3/15/2010. The 25,000 shares initially underlying this option began vesting on 2/20/2003 and vest as follows: (i) 20% on 2/20/2004; and (ii) the remaining 80% in equal monthly installments over the ensuing 48 months following 2/20/2004. The reported option expires in accordance with the following schedule: (a) the right to buy 834 shares expires on 3/15/2009; and (c) the right to buy the remaining 9,166 shares expires on 2/20/2013. This amended form 4 amends and restates the amount of securities beneficially owned following reported transactions previously reported by this reporting person on Table I in form 4s filed on 3/9/2009. All other reported information from the original filed form 4s is unchanged. /s/Thomas Gay as attorney-in-fact for Kit Tsui 2009-03-16