Transmission refers to the transfer of securities from the demat account of a deceased holder to that of the surviving joint holder(s), nominee or legal heir. On the death of a joint holder of a demat account, the surviving holder or holders become entitled to the securities.
2) Even as per the applicable provisions of the National Securities Depository Ltd (NSDL) bye-laws, in the event of the death of a joint holder of a demat account, NSDL will recognize the surviving holder(s) as having title to the security balances lying to the credit of that account
3) as legal heir of father apply for succession certificate in respect of shares held by father jointly with your uncle