X0202 4 2007-05-07 0 0000874238 STERLING CONSTRUCTION CO INC STRL 0001205461 FRICKEL ROBERT W 20810 FERNBUSH LANE HOUSTON TX 77073 1 0 0 0 Common stock 2007-05-07 4 A 0 1598 A 64805 D These shares were issued as part of a restricted stock grant and therefore no consideration was paid by the Reporting Person. These shares may not be sold, assigned, transferred, pledged or otherwise disposed of until they vest. Vesting occurs on the day before the 2008 Annual Meeting of Stockholders and earlier if the reporting person dies or becomes disabled and in the event of a change in control of the Issuer. The shares are forfeited in the event that prior to vesting, the Reporting Person ceases to be a director other than by reason of his death or disability. /s/ Karen A. Stempinski, under POA 2007-05-10