31 CFR 306.43 - Voidance of assignments.
An assignment of a security to or for the account of another person, not completed by delivery, may be voided by a disclaimer of interest from that person. This disclaimer should be executed in the presence of an officer authorized to certify assignments of securities. Unless otherwise authorized by the Bureau, the disclaimer must be written, typed, or stamped on the back of the security in substantially the following form:
The undersigned as assignee of this security hereby disclaims any interest herein.
I certify that the above-named person as described, whose identity is well known or proved to me, personally appeared before me the ___ day of ______ (Month and year) at __________ (Place) and signed the above disclaimer of interest.