Thanks.  I saw your post from last year also.  I have a few a these from employees of the same privately-held company.  Grant date was 1/10/20 and 83b transfer date was 12/30/20.  Not reported on W2.  Seems like the 83b's are not legit due to 30-day window passing and I'm hesitant to sign these things.  Oh yeah, plus they are ISOs, not restricted stock.  In your opinion, are the 83b elections legit?  Thank you in advance.