X0303 4 2009-04-22 0 0000353020 INSITUFORM TECHNOLOGIES INC INSU 0001187134 HINSHAW JUANITA H C/O INSITUFORM TECHNOLOGIES, INC. 17988 EDISON AVENUE CHESTERFIELD MO 63005 1 0 0 0 Deferred stock units 2009-04-22 4 A 0 5231 0 A 27905 D Each deferred stock unit ("DSU") represents the issuer's obligation to transfer one share of Class A common stock, $.01 par value per share ("Common Stock"), in accordance with the terms of the deferred stock unit agreement pursuant to which the DSUs were granted. The DSUs were granted under the issuer's 2006 Non-Employee Director Equity Incentive Plan, and are immediately vested upon grant. Promptly following termination of the undersigned's service on the issuer's Board of Directors or, at the undersigned's election, a specified distribution date, the issuer will distribute to the undersigned shares of Common Stock equal to the number of DSUs reflected in the undersigned's account at such time. /s/ Elizabeth Kovaly Willis, as attorney-in-fact for Juanita H. Hinshaw 2009-04-24