be in the loop

To be informed about or involved in something, such as a plan or project, especially that which involves or pertains to a specific group. We've hired a new intern to help you with data entry, so she needs to be in the loop about the project too. I'd like some time to review for the board meeting, as I haven't been in the loop for the last three weeks. I'm afraid I'm not in the loop on this project. Can you bring me up to speed?

be in the ˈloop

be out of the ˈloop

(informal, especially American English) be part of a group of people that is dealing with something important; not be part of this group: A lot of people want to be in the loop on this operation. ♢ Lawton had gradually been cut out of the information loop.