If your current job pays $400K they are either grossly overpaying or you are in a very narrow band of people in your field and you probably should not be taking

If your current job pays $400K they are either grossly overpaying or you are in a very narrow band of people in your field and you probably should not be taking too many interviews with people who do not already know what they should be prepared to pay. People at $400K a year don't apply for a job, they're recruited. Any of the problems mentioned in this thread would likely not apply.