My understanding is that Apollo is an investment (hedge fund?) company.
They buy companies with the intent to sell them (whole or in pieces) for more than they paid. I do not believe that they are long term operators.
Does that mean that Regent will cease to be Regent if & when Apollo sells them? Nope! But one can expect changes from a buyer looking to recoup as much of the purchase price as fast as possible.
As one wag put it: The only thing that never changes is change.
Doug