Joint Filing Agreement
Exhibit A
The undersigned agree that this Schedule 13G, and all amendments thereto, relating to the Common Stock of OmniAmerican Bancorp, Inc. shall be filed on behalf of the undersigned.
| /s/ ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ |
| ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ |
| ▇▇▇▇▇ TROUT MANAGEMENT, LLC |
| Name: ▇▇▇▇▇▇ ▇. ▇▇▇▇▇▇ |
| Title: Managing Member |