Ernest Ortega, CRO at Cogent Comms, holds 38.80K shares in Cogent Comms (Ticker: CCOI), holds ― shares in Towerstream (Ticker: TWER), holds 242.84K shares in GTT Communications (Ticker: GTTNQ). Most recently, Ernest Ortega Sold ― shares of Cogent Comms on Sep 17, 2015 for an estimated value of 61.67K.