All ADRs are required to have a U.S. investment bank act as their depositary bank. The depositary bank is the institution that issues ADRs, maintains a record of the holders of ADRs, registers the trades carried out, and distributes the dividends or interest on shareholders' equity payments in dollars to ADR holders. In a sponsored ADR, the depositary bank works with the foreign company and their custodian bank in their home country to register and issue the ADRs. An unsponsored ADR is instead issued by a depositary bank without the involvement, participation, or even the consent of the foreign company it represents ownership in. Unsponsored ADRs are normally issued by broker-dealers that own common stock in a foreign company and trade over-the-counter. Sponsored ADRs are more commonly found on exchanges.