Tex. Bus. Orgs. Code § 200.401
In this subchapter:
(2) "Sale of all or substantially all of the assets" means the sale, lease, exchange, or other disposition, other than a pledge, mortgage, deed of trust, or trust indenture unless otherwise provided by the certificate of formation, of all or substantially all of the property and assets of a domestic real estate investment trust that is not made in the usual and regular course of the trust's business without regard to whether the disposition is made with the goodwill of the business. The term does not include a transaction that results in the real estate investment trust directly or indirectly:
Acts 2003, 78th Leg., ch. 182, Sec. 1, eff. Jan. 1, 2006.