Indeed. That varies widely, though, and corporations are subject to it too, with its own weirdnesses, so I was trying to stick to apples-to-apples federal tax comparisons.
Consider this: Where were the last 20 major IPOs? The last 20 major acquisitions? Where were the founding teams (i.e., the ones with the most stock facing such issues.) ...I'll bet 80% or more of these were in CA. I'm only pointing this out because once you're a super-successful startup and you've gone thru all the steps for a successful liquidity event, there is the final bath of taxes :-/