Your handbook mentions nothing about a ROFR, buyback options in bylaws, access to company bylaws or a complete lack of restrictions on equity ownership. All I can see is your equity vesting schedule.

You also do not talk about what employees could do with their options / stock and how the company would probably react to it. Like how would you react if they did a ESO fund style purchase of their options? Sold them on second market? Just purchased it personally?

I could be missing it but I can't see it right now.