MO HB3336

Adds section 362.1125 to Missouri law establishing a framework for signature guarantees on securities transfers, recognizing programs like STAMP, SEMP, and NYSE Medallion Signature Program under 17 CFR 240.17Ad-15

Defines eligible guarantor institutions as banks, brokers/dealers, credit unions, national securities exchanges, registered securities associations, clearing agencies, and savings and loan holding companies

Transfer verification guarantees from eligible institutions constitute binding guarantees to issuers and transfer agents, who are not required to independently verify identity or authority when accepting such guarantees

Provides liability protection for issuers and transfer agents who accept transfer verification guarantees in good faith and compliance with the law

Requires eligible guarantor institutions participating in signature guarantee programs to offer medallion signature guarantee validation services, with the Director of the Division of Finance authorized to promulgate rules (effective after August 28, 2026)