Rule 7.1. Disclosure Statement.

(a) Who Must File; Contents. A nongovernmental corporate party must file and serve a disclosure statement that:

(1) identifies any parent corporation and any publicly held corporation owning 10% or more of its stock; or

(2) states that there is no such corporation.

(b) Time to File; Supplemental Filing. A party must:

(1) file and serve the disclosure statement with its first appearance, pleading, petition, motion, response, or other request addressed to the court; and

(2) promptly file and serve a supplemental statement if any required information changes.