X0202 4/A 2007-05-15 2007-05-17 0 0000874238 STERLING CONSTRUCTION CO INC STRL 0001018000 HEMSLEY MAARTEN D 20810 FERNBUSH LANE HOUSTON X1 77073 1 1 0 0 Chief Financial Officer Common stock 2007-05-15 4 S 0 1300 20.25 D 128012 D Common stock 2007-05-15 4 S 0 700 20.44 D 127312 D Common stock 2007-05-15 4 S 0 1300 20.5 D 126012 D Common stock 2007-05-15 4 S 0 700 20.51 D 125312 D Common stock 2007-05-15 4 S 0 700 20.52 D 124612 D Common stock 2007-05-15 4 S 0 100 20.56 D 124512 D Common stock 2007-05-15 4 S 0 800 20.57 D 123712 D Common stock 2007-05-15 4 S 0 700 20.61 D 123012 D Common stock 2007-05-15 4 S 0 700 20.66 D 122312 D These shares were sold pursuant to a 10b5-1 plan adopted by the Reporting Person on May 31, 2006 Karen A. Stempinski, under POA 2007-05-18