Doesn't even have to be paper shares. You can call up your broker and ask them to transfer X shares of ABC company into someone else's account. It is useful and

Doesn't even have to be paper shares. You can call up your broker and ask them to transfer X shares of ABC company into someone else's account. It is useful and essential to be able to transfer shares from one person to another without having to hit the open market. Like, imaging transferring 10% of a publicly traded company you own to the account of your family office.