off-board

[awf-bawrd, -bohrd, of-]

adjective, adverb Stock Exchange.

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

Origin of off-board

First recorded in 1945–50

[awf-bawrd, ‐bohrd, of‐]

adjective

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

verb (used with object) Business.

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

First recorded in 1945–50; off + board