You want to be a shreholder in the bank you will have to go a brokerage firm and buy shares, that if the bank has shares issued
For a bank (not a credit union) it will make you a customer but not an owner. You can, however, purchase shares of many banks if you want to own shares.
No, unless it is is a mutual bank or a credit union. Otherwise, a bank is just like any other company - if it is a public company you buy stock in the bank's holding company (usually), if privately held, then you cannot own stock unless one of the owners his/her shares directly to you.
Of course not! Having assets held at the bank in NO WAY equates to having an equity stake in the institution.
Not for a regularly chartered bank. It does for a credit union, I believe.
Does not make you share holder at a regular bank.
Not sure about credit unions and their strange language though.