On January 1, 2016, the Depository Trust Company ("DTC") implemented a new Corporate Actions Eligibility Fee to their fee schedule. The new fee of 1,000 USD will be charged whenever DTC receives a request to make a new CUSIP eligible for DTC services in relation to a corporate action event. The rule requires the fee to be charged to the transfer agent, at which point it will be passed through to the issuer.
The announcement from DTC is available here.