bluecoconuts
Legend
It's not easy to find out what name they're operating under, but as of the end of the last fiscal year (2015), and according to Bloomberg.com, the name is still St. Louis Rams, LLC. Key executives are Snead, Demoff and Fisher. There's also The Rams Football Company Inc, and they operate out of the same office as St Louis Rams LLC (One Rams Way, St Louis MO). So it doesn't appear as though they've established a headquarters in CA yet. And if that's the case; then again, this whole thing is a non-issue.
I think they said they had the end of March/Early April as a target date for officially setting up shop in LA, sometime around then they need to be out of Rams park because the lease ends.