An AGI could run such a company without humans anywhere in the loop, just like humans can run such a company without an AGI helping them.
I'd say a strong signal that AGI has happened are large fully automated companies without a single human decisionmaker in the company, no CEO etc. Until that has happened I'd say AGI isn't here, if that happens it could be AGI but I can also imagine a good enough script to do it for some simple thing.