SUPN SUPERNUS PHARMACEUTICALS INC US FDA Inspections 8-K Filing 2023 - Resubmission of New Drug Application for SPN-830 SUPERNUS PHARMACEUTICALS, INC. resubmits New Drug Application for SPN-830 for the treatment of motor fluctuations in Parkinson's disease.Get access to all SEC 8-K filings of the SUPERNUS PHARMACEUTICALS INC