The Securities and Exchange Commission (SEC) has adopted a new rule, rule 10c-1, to increase transparency in the securities lending market. The rule requires certain persons to report information about securities loans to a registered national securities association (RNSA). The RNSA will then make certain information publicly available. Published in December of 2021, the proposal received considerable public comment, requiring the Commission to extend the initial 30-day comment period twice, once due to a technical problem receiving comments, and then again to consider whether there would be any effects of proposed Rule 13f–2 that the Commission should consider in connection with proposed Rule 10c–1. Throughout the final release, the Commission notes where persuasive public comment informed the ultimate text of the rule.