You have to go to Surrogate's court and probate the will if there is one. If there is no will, then apply for letters of administration.Any transfer of ownership of a cooperative unit will require the cooperative corporation to cancel the old stock certificate and issue a new one. To transfer shares of a coop that has no mortgage requires the Board to issue new shares with only your name on the shares. To initiate a co-op transfer, you will typically need to notify the cooperative board or management company of your intention to transfer your shares. Complete number 9 on the Stock Power Form. When checks are reissued, outstanding checks in the account are cancelled. Once the forms are completed online, you will receive instructions. Go to Federal Worksheet > Shareholders > Changes of Interest. Section 2, Changes in Shareholder's Interest - Line 1, input the date the change occurred.