We should get lots more information this quarter as news of the share distribution is PR'd. Here is the latest that is published but imho the naked short position if quite large:

NTGL Security Details
Share Structure
Market Value1 $1,271,625 a/o Sep 30, 2016
Authorized Shares 450,000,000 a/o Sep 30, 2015
Outstanding Shares 181,660,650 a/o Sep 30, 2015
-Restricted Not Available
-Unrestricted Not Available
Held at DTC Not Available
Float 26,538,440 a/o Apr 23, 2015
Par Value Not Available
Transfer Agent(s)
ClearTrust, LLC
Shareholders
Shareholders of Record 332 a/o Apr 23, 2015
Security Notes
New Issue=2-88 150,000 shs in units (1 sh Com, 4 A Warr 2-12-89, 4 B Warr 8-12-89 & 4 C Warr 8-12-90) at 75 cents per unit by Steven Andrew & Company, Inc.
Capital Change=shs decreased by 1 for 150 split Pay date=12/23/2002.
Capital Change=shs decreased by 1 for 6000 split Pay date=04/21/2014.
Capital Change=shs increased by 10 for 1 split. Pay date=04/23/2015.
Short Selling Data
Short Interest 4,640 (100%)
Aug 31, 2016
Significant Failures to Deliver No
Go NTGL and NTEK!!!