How to get duplicate share certificate in India, you must first inform the company or its Registrar and Transfer Agent about the loss. This is typically done by submitting a formal application along with an affidavit, indemnity bond, and identity proof. In some cases, the company may ask you to publish a newspaper advertisement to announce the loss. Once your documents are verified, you will need to pay the required fees. Upon completion of all necessary formalities, the company will issue the duplicate share certificate, reinstating your ownership and enabling you to manage your investments without interruption.