A company being 100% stock-acquired is a T&M subcontractor to large prime. Certified Cost or Pricing Data was not required during proposal process. Subcontract includes non-assignment clause by prime and flowdown of 52.215-19 Notification of Ownership Changes. Since the sub is being purchased in whole, assignment doesn't apply. Would a T&M subcontract be subject to postaward cost redetermination if there are immaterial ODCs, thereby requiring the notification of ownership change?