Comments on MSRB Rulemaking

Notice of Filing and Immediate Effectiveness of a Proposed Rule Change to Revise the Effective Date of New Rule G-18, on Best Execution of Transactions in Municipal Securities, and Amendments to Rule G-48, on Transactions with Sophisticated Municipal Market Professionals, and Rule D-15, on the Definition of Sophisticated Municipal Market Professional

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Date Received

Last Reviewed or Updated: Dec. 18, 2025

File Number
SR-MSRB-2015-10
Release Number
34-75751