Tex. Rev. Civ. Stat. art. 6136

Where suit shall be brought against such company or association, and the only service had shall be upon the president, secretary, treasurer or general agent of such company or association, and judgment shall be rendered against the defendant company, such judgment shall be binding on the joint property of all the stockholders or members thereof, and may be enforced by execution against the joint property; but such judgment shall not be binding on the individual property of the stockholders or members, nor authorize execution against it.