That isn't a newb question. Don't feel bad for asking it.
Some people on here know for exactly the reasons you would think. Not sure how definitive an answer I want to give you beyond that. I personally know in the case of Stewart because I know some of the people that were involved on our end. I know what was being thrown his way and I know his people took a higher offer from Aggy. So I can say, with extreme confidence, that it was at least above ~250-300K. Others on here who I have no relationship with, and who have their own connections, have said its probably above 350K. I have no idea with Harris beyond knowing, through my same connections, that he is 100% for sale and making a business decision and that we simply didn't successfully engage with him in the right way or with the right effort. Not saying more than this /shrug
edit: just to be clear you never really know what someone gets if you lose that battle. Just how it goes. Obviously their people are not going to just tell you or admit to anything. So it could be a dollar more, it could be less money but with more promised ancillary benefits, or it could be fucking double. You just don't know. You can generally guess with some accuracy but that is about it.