Thanks for all the helpful replies. It appears that STTR rules are different for NSF vs. NIH.
1) Unlike NIH STTR, it appears the NSF STTR PI cannot be a university professor – am I correct? The NSF STTR PI has to be an employee of the smallbiz. A senior university prof will not do that. Then would the uni prof be a Co-I or an additional PI ?
2) Does NSF allow additional investigators to create a solid team? The solicitation is confusing. It only talks about a PI with no mention of Co-Investigators, etc. How does one show a ‘team’ with just 1 PI?
3) NSF STTR allows only 50% for the university (vs 60% in NIH STTR) – am I correct?