I'm interviewing with a non-FAANG that gave me a range of $250-$350k per year in SF for a product manager role. Is that average or low? This is with 5+ years of tech experience
Just FYI, unless the company is eminently filing for an IPO, or is already public, I would not include RSU as a liquid benefit.
It is (unfortunately) likely that the stock will be worth something approximating zero in a couple years, rather than maintaining or increasing from the current funding valuation.
You should also consider burn rate, current runway, and health of competition.
For your YOE the low end of the range is somewhere between low and average, and the high end is high. Specific business and technology results should drive the negotiation though, not YOE. If YOE is your lever, I'd expect you to land in the bottom third.
My sense of low and high here is relative to other offers, not compensation generally (i.e. what you'd find on levels.fyi). Plenty of people with roughly the same YOE make a lot more thanks to RSU appreciation.