X0303 4 2009-06-16 0 0000874238 STERLING CONSTRUCTION CO INC STRL 0001205460 MANNING PATRICK T 20810 FERNBUSH LANE HOUSTON TX 77073 1 1 0 0 Chief Executive Officer Common Stock 2009-06-16 4 S 0 8079 14.85 D 81416 D Common Stock 2009-06-17 4 S 0 6600 14.39 D 74816 D These shares were sold as a result of a margin call by the reporting person's broker. This is the weighted average price at which these shares were sold. Of the shares, 6,600 shares were sold at prices that ranged from $14.50 to $14.99 per share; 1,179 shares were sold at $15.00 per share; and 300 shares were sold at $15.02 per share. Upon request, the reporting person will provide to the staff of the SEC, the issuer, or a security holder the full information regarding the number of shares sold at each separate price. This is the weighted average price at which these shares were sold. They were sold at prices that ranged from $14.35 to $14.41 per share. Upon request, the reporting person will provide to the staff of the SEC, to the issuer, or to a security holder the full information regarding the number of shares sold at each separate price. /s/ Roger M. Barzun under a Power of Attorney 2009-06-17