Commonly KNOWN that brokerage firms are not listing EACH ACCOUNT HOLDER but rather they are listed as "ONE" for the purposes of the tally you're referring to (despite having multiple clients carrying the NTEK-equity in their porfolios of course)....
shareholders of record is not shareholders, but rather shareholders that we issued shares to and still have them. Shareholders that bought in the open market is a much larger number, but not a number that we keep or our transfer agent keeps.
6M restricted shares were converted to free trading. That does not require an SEC filing and is not shares being sold, but rather someone that has held previously issued restricted shares and has converted them to free trading. Typically that means that they have held them for at least a year, are not an affiliate, and have met all of the other Rule 144 criteria.