In this subchapter:
(1) "Court" means a district court in the county in which the principal office of the close corporation is located.
(2) "Custodian" means a person appointed by a court under Section 21.761.
(3) "Provisional director" means a person appointed by a court under Section 21.758.
(4) "Shareholder" means a record or beneficial owner of shares in a close corporation, including:
(A) a person holding a beneficial interest in the shares under an inter vivos, testamentary, or voting trust; or
(B) the personal representative, as defined by the Estates Code, of a record or beneficial owner.