I can't speak to whether it's normal but it's a red flag for me. One of the companies I've worked for was pre-IPO and went IPO while I was there and when they

I can't speak to whether it's normal but it's a red flag for me. One of the companies I've worked for was pre-IPO and went IPO while I was there and when they hired me two years before that IPO they laid out the vesting schedule (1 year cliff, then monthly vesting of the remaining 3/4s of options) along with the strike price of the options along with how that strike price/valuation was calculated. Other places have had varying levels of professionalism like that but that was the only place that ended up IPOing and I believe there is a correlation between the professionalism of laying out clear compensation and the actual performance of the rest of the company.