Live feed13:18:10·949dINSIDERFilingvia QuantisnowSEC Form 4: Bigham Michael exercised 23,255 shares at a strike of $4.30 and returned 1,358,032 shares to the company, closing all direct ownership in the companyByQuantisnow·Wall Street's wire, on your screen.PRTK· Paratek Pharmaceuticals Inc.Health CareOriginal source