HAPP - Oasis Midstream Partners Corbus Pharmaceuticals among premarket losers' pack June, 25 2021 08:06 AM Happiness Development Group Limited Marin Software (MRIN) -14%.Oasis Midstream Partners (OMP) -11% on proposed public offering.Corbus Pharmaceuticals (CRBP) -8%.Happiness Biotech (HAPP) -8% on $2.16M public offering For further details see: Oasis Midstream Partners, Corbus Pharmaceuticals among premarket losers' pack