Rather than worrying about satoshi dumping his coin, worry more about how much you can accumulate for the future before we start seeing a huge demand and growth in the market. Apparently, I am sure satoshi; either a group or one person will not be dumping on the market and then using his own hands to destroy what he has built over time.

The market has not matured to an extent where the volume is huge and such a dump on the market will not make a very huge impact, but I am sure even with all exchanges put together at the moment; the price will drive down so fast. Let's say this is even done OTC, it would still increase the huge supply in the market at this stage.