The SEC reviewed UDF IV's last 10q filed 11/9/15. It covered the quarter end Sept 2015.
that 10Q detailed all Loan Participation Interests and all notes receivable from affiliated entities.
If there was anything improper with those loan participations or notes from affiliated, then the SEC would have identified that. If they were overstated, or not legit, then they would have been addressed.
Also, UDF IV filed that 10Q with the SEC representing assets worth $684 million.
If there was anything inappropriate with those then the SEC would have identified those problems.
Therefore, I think it's possible to assume those financial statements could be reliable. If not, why would the SEC not have identified problems and why would they have settled?