Tex. Fin. Code § 182.015
If control of an exempt state trust company is sold or otherwise transferred, the acquiring person must comply with Sections 182.003, 182.004, 182.005, 183.001, and 183.002. For the exempt status of the state trust company to continue, the acquiring person must file a certification with the banking commissioner that the state trust company will comply, or continue to comply, with the requirements of Section 182.011 after control is transferred. The banking commissioner may examine or investigate the acquiring person and the state trust company as necessary to verify the certification. If the commissioner determines that the state trust company will not comply, or continue to comply, with the requirements of Section 182.011 after control is transferred, the commissioner shall terminate the exemption on the effective date of the transfer. After the termination, the acquiring person must file a separate application to obtain a new exemption for the state trust company under Section 182.011.
Tex. Fin. Code § 182.015