All MSRB Registered Firms

Last Day to File G-37 for Quarter ending September 30 When Annually on the 31st of October All day Recent Fri, Oct 31, 2025, all day Upcoming Sat, Oct 31, 2026, all day Sun, Oct 31, 2027, all day Regulated Entity All MSRB Registered Firms

Regulated Entity: All MSRB Registered Firms

Source: https://www.msrb.org/events/Last-Day-File-G-37-Quarter-ending-September-30-1

Last Day to Make Timely Payment for Annual Registration Fee Under Rule A-12 When Annually on the 31st of October All day Recent Fri, Oct 31, 2025, all day Upcoming Sat, Oct 31, 2026, all day Sun, Oct 31, 2027, all day Regulated Entity All MSRB Registered Firms

Regulated Entity: All MSRB Registered Firms

Source: https://www.msrb.org/events/Last-Day-Make-Timely-Payment-Annual-Registration-Fee-Under-Rule-A-12-2

Effective Date for Amendments to Rule G-20 for Municipal Advisors and Dealers that Are Not FINRA Members When Tue, Dec 1, 2026, all day See MSRB Notice 2026-04 Regulated Entity All MSRB Registered Firms Add to Calendar 2026-06-03 15:30:57 2026-06-03 15:30:57 Effective Date for Amendments to Rule G-20 for Municipal Advisors and Dealers that Are Not FINRA Members See MSRB Notice 2026-04 MSRB msrb@msrb.org America/New_York public

Regulated Entity: All MSRB Registered Firms

Source: https://www.msrb.org/events/Effective-Date-Amendments-Rule-G-20-Municipal-Advisors-and-Dealers-Are-Not-FINRA-Members

End of 529 Underwriting Assessment Reporting Period When Annually on the 31st of December All day Recent Wed, Dec 31, 2025, all day Upcoming Thu, Dec 31, 2026, all day Fri, Dec 31, 2027, all day Regulated Entity All MSRB Registered Firms

Regulated Entity: All MSRB Registered Firms

Source: https://www.msrb.org/events/End-529-Underwriting-Assessment-Reporting-Period-0