; (B) the sum of the clearing prices of all digital advertisements bought or sold from or through a digital advertising exchange; (C) the total value of the gross advertising spending managed by a buy-side brokerage; or (D) the total value of the gross advertising sales managed by a sell-side brokerage. (6) Divestiture deadline The term divestiture deadline means the later of— (A) 30 days after the date on which the Attorney General approves or denies a required divestiture; or (B) 30 days after the expiration of any applicable waiting period specified in section 7A. (7) Effective date The term effective date means the date that is 1 year after the date of enactment of this section. (8) Own The term own means to own, operate, or control, directly or indirectly, in whole or in part. (9) Person The term person includes— (A) any subsidiary of an entity; and (B) any corporate parent of an entity. (10) Required divestiture The term required divestiture — (A) means a divestiture, sale, or other transaction undertaken to comply with any provision of this Act; and (B) does not include any action required by a court of the United States. (11) Sell-side brokerage The term sell-side brokerage means a person in the business of effecting transactions on digital advertising exchanges, including by offering software or services that assist in serving or displaying digital advertisements, for third-party sellers. (12) Third-party The term third-party means, for each person subject to this Act, an entity that— (A) neither owns nor is owned by the person