i have 2 posts that will answer your question .. take a closer look at the 2nd link at the end of the posts your answer is there ;-P for the # of shareholders that i don't know we will see in the fillings when they come out, last it was a little over 2000.

-OTC MARKETS Top 3 Tiers Info

http://investorshangout.com/post/view?id=7938

-otc Pinks - Lower Tiers info

http://investorshangout.com/post/view?id=12555

$TYTN