Registrar or transfer agents are the trusts or institutions that register and maintain detailed records of all the investors of a company. A RTA keeps records of various transactions such as certificate issuance, corporate actions notice etc.
RTAs also looks into which shareholders should receive the IPO shares, bonus shares, dividends and interest payments.
An RTA also verifies which shareholders own the stock on the record date. They have a role in rematerialisation, dematerialization, transfer of shares on death, etc.
Click here to check a list of RTAs.