During the crowdsale, I was inspecting the accounts that send ETH to the EOS contract (copy-pasting them in EtherScan) and, once I decided to send my EOS to my exchange address, I wrongly sent it to another address which I had copied. A big fault and I must have been so much more careful. It was early morning which I had just woke up, etc.. I must have been so much more careful as that is almost $200,000 worth of EOS tokens which is so big for me and for almost anyone. Idiot me, exactly.