I don't believe you'll ever get the answer to that question in this forum that names names (of traders and organizations).
I also wonder about the specific answer as well; but I've read posters in forums like this say that lenders who hold loan notes which can be converted to shares have the ability to sell (usually selling just a few) shares for sub-.0001/share so that they can use those sales figures as a basis for converting loan dollars into shares.
What I think is true is that if a loan-holder deals directly with a live-human broker (rather than just use an electronic trading system), the broker can instigate sales for less than .0001/share. Also, it may take a broker to buy them at those prices.
Of course, converting loan dollars to shares at very low-price/share rates not only has the downside to existing share holders of diluting their shares' value, but in a stock like this in which there is already very little interest (from the greater stock buying public), that just creates diluted shares that no one will ever buy -- unless the note holders have good reason to expect that one day this company will succeed, so that even diluted shares will one day be worth buying.
[If they can get shares for less than .0001 via conversion and then sell them for .0001/share, then they do make money, even though the general buying public that cannot.]
