Where a circumstance under paragraph CSD-3.1.13 (a), (b), (e) or (f) has occurred, the licensed clearing house or central depository shall, in addition to the notification required under paragraph CSD-3.1.16, within 7 days of the occurrence of the circumstance, submit a report to the CBB of the circumstances relating to the occurrence, the remedial actions taken at the time of the occurrence, and the subsequent follow-up actions that the licensed clearing house or central depository has taken, or intends to take.