lambertslunatics"I believe there are thousands of PTSC shareholders and perhaps even over 10,000 who have some level of investment."

I seem to recall the number 1,500 being used by a BOD member - maybe at the 2012 SHAM.

However, the last 10-K states:

On August 15, 2012 the closing price of our stock was $0.14 and we had approximately 685 stockholders of record. Because most of our Common Stock is held by brokers and other institutions on behalf of stockholders, we are unable to estimate the total number of beneficial owners represented by these record holders.