A while ago I used to transfer my funds to paper wallets and I felt safer splitting them into many, many different addresses. After a while, I decided to split them into unequally valued paper wallets so I had a bunch of 0.01BTC papers, a bunch of 0.05BTC papers etc.. his funds might have been sent to cold/paper wallets, or who knows. Might be another rich holder securing his funds. Upon looking up the addresses I couldn't find any other results except the transactions you've also linked here.