PROTAGENIC THERAPEUTICS, INC. (OTCMKTS:PTIX) Files An 8-K Entry into a Material Definitive Agreement – Market ExclusiveBy / September 4, 2020 PROTAGENIC THERAPEUTICS, INC. (OTCMKTS:PTIX) Files An 8-K Entry into a Material Definitive Agreement Market Exclusive Share this:TweetReddit