X0204 3 2011-12-14 0 0001275712 GSE Holding, Inc. GSE 0001094262 CODE HENNESSY & SIMMONS IV LP 10 SOUTH WACKER DRIVE, SUITE 3175 CHICAGO IL 60606 0 0 1 0 0001275715 CHS MANAGEMENT IV LP 10 SOUTH WACKER DRIVE, SUITE 3175 CHICAGO IL 60606 0 0 1 0 0001275716 CHS Capital LLC 10 SOUTH WACKER DRIVE, SUITE 3175 CHICAGO IL 60606 0 0 1 0 0001316382 CHS Associates IV 10 SOUTH WACKER DRIVE, SUITE 3175 CHICAGO IL 60606 0 0 1 0 Common stock 10726004 D Common stock 17630 D Code Hennessy & Simmons IV LP is the record holder of these securities. CHS Capital LLC is the general partner of CHS Management IV LP, which in turn is the general partner of Code Hennessy & Simmons IV LP. CHS Capital LLC and CHS Management IV LP disclaim beneficial ownership of the securities owned by Code Hennessy & Simmons IV LP except to the extent of a pecuniary interest therein. CHS Associates IV is the record holder of these securities. CHS Capital LLC is the general partner of CHS Associates IV. CHS Capital LLC disclaims beneficial ownership of the securities owned by CHS Associates IV except to the extent of a pecuniary interest therein. /s/ Code Hennessy & Simmons IV LP by Cade Kohoutek as attorney-in-fact pursuant to attached Power of Attorney 2011-12-14 /s/ CHS Management IV LP by Cade Kohoutek as attorney-in-fact pursuant to attached Power of Attorney 2011-12-14 /s/ CHS Capital LLC by Cade Kohoutek as attorney-in-fact pursuant to attached Power of Attorney 2011-12-14 /s/ CHS Associates IV by Cade Kohoutek as attorney-in-fact pursuant to attached Power of Attorney 2011-12-14