Believe last tranche of free warrants from 2019 expire sept 20 . Always keep an eye out what paper is out there. It's only approx 183k value but I'm certain they always take care of current and former paper holders first. Remember most deb holders did not convert their free 5$ warrants (50cents pre consolidation)so out of undue respect for those that helped finance company with earlier and much larger tranches  believe they will wait til this last tiny tranche is out of the way before significant news. Somehow I think share price nonsense action we are seeing now reflects this to an extent. Anon on the sell today maybe playing both sides with net effect to drop price and pick up a few cheaper.
Kudos to those that have the strength and capacity to add.  Hanging tight. Good stuff coming.