Since from what I hear a fresh grad in the Bay Area gets $100k+ just in cash, we could extrapolate. I'm guessing that's at least $150k (probably more like $200k+ in today's market) in total compensation for year. Add about $20k+ in cash and probably the close to the same in Google shares per level, that would make it easily $400k per year. So he would have gotten $3.2 million, I can't imagine his expenses being higher than half of that, so he should be worth $1.6 million after 8 years. Probably more.
I'm curious how off my estimations are :)