Tex. Business Organizations Code § 21.214

(a) If shares are registered on the books of a corporation in the names of two or more persons as joint owners with the right of survivorship and one of the owners dies, the corporation may record on its books and effect the transfer of the shares to a person, including the surviving joint owner, and pay any distributions made with respect to the shares, as if the surviving joint owner was the absolute owner of the shares. The recording and distribution authorized by this subsection must be made after the death of a joint owner and before the corporation receives actual written notice that a party other than a surviving joint owner is claiming an interest in the shares or distribution.

(b) The discharge of a corporation from liability under Section 21.216 and the transfer of full legal and equitable title of the shares does not affect, reduce, or limit any cause of action existing in favor of an owner of an interest in the shares or distributions against the surviving owner.