I think if one is to review the Pinetree website (Past Investments) there seems to be a continuity of their significant holdings by quarter. It would appear that sometime in the 2nd quarter of 2015 their respective holdings in PTK had been reduced to zero OR, were less than their disclosure policy of $250,000 in valuation.
That's my interpretation but always stand to be corrected. I think Pinetree is a distant memory and is long gone from being a meaningful shareholder of PTK.