offboard

adjective

1. not carried, installed, etc., within a vehicle or electronic device: offboard software to track and control the robot’s movement.
2. Finance. over-the-counter(def 1).

verb (used with object) Business.

3. to interact and exchange information with (a departing employee) so as to ensure a smooth transition, protect company assets, etc.
4. to manage the end of a business relationship with (a customer) so as to maintain goodwill, protect confidential data, etc.

adjective, adverb Stock Exchange.

1. outside of a major exchange, as over the counter or between private parties: an off-board transaction.