If we could not find out who Satoshi Nakamoto is in the 12 years after the creation of bitcoin, then most likely we will never know about it. In addition, Nakamoto himself does everything in order to hide his identity, if it is one person at all. We can't even say if a person who was called Satoshi Nakamoto is still alive today. For now, we are focusing on bitcoins in wallets, which, presumably, should belong to him. There hasn't been any movement in these wallets yet.