Maybe after a few years with a lot of stock appreciation. I don't know of any company that will offer it straight-up. If you do, let me know and I'll consider switching right away.
I'm not smart enough or ambitious enough anymore for staff but L5 is definitely doable.
Also, and possibly related if the point above is the case, I have read from various Googlers recently that getting hired from outside at L5+ is really hard.