Live feed17:11:21·1444dINSIDERFilingvia QuantisnowSEC Form 4: Arrow Alexander K. bought $22,090 worth of PTIX Common Stock (31,000 units at $0.71), increasing direct ownership by 26% to 151,260 unitsByQuantisnow·Wall Street's wire, on your screen.PTIX· Protagenic Therapeutics Inc.Health CareOriginal source