<SEC-DOCUMENT>0001493152-23-039586-index.html : 20231106 <SEC-HEADER>0001493152-23-039586.hdr.sgml : 20231106 <ACCEPTANCE-DATETIME>20231106172332 ACCESSION NUMBER: 0001493152-23-039586 CONFORMED SUBMISSION TYPE: DEFA14A PUBLIC DOCUMENT COUNT: 3 FILED AS OF DATE: 20231106 DATE AS OF CHANGE: 20231106 FILER: COMPANY DATA: COMPANY CONFORMED NAME: GT Biopharma, Inc. CENTRAL INDEX KEY: 0000109657 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 941620407 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: DEFA14A SEC ACT: 1934 Act SEC FILE NUMBER: 001-40023 FILM NUMBER: 231380843 BUSINESS ADDRESS: STREET 1: 8000 MARINA BLVD STREET 2: SUITE 100 CITY: BRISBANE STATE: CA ZIP: 94005 BUSINESS PHONE: (800) 304-9888 MAIL ADDRESS: STREET 1: 8000 MARINA BLVD STREET 2: SUITE 100 CITY: BRISBANE STATE: CA ZIP: 94005 FORMER COMPANY: FORMER CONFORMED NAME: OXIS INTERNATIONAL INC DATE OF NAME CHANGE: 19940916 FORMER COMPANY: FORMER CONFORMED NAME: DDI PHARMACEUTICALS INC DATE OF NAME CHANGE: 19920703 FORMER COMPANY: FORMER CONFORMED NAME: DIAGNOSTIC DATA INC /DE/ DATE OF NAME CHANGE: 19850312 </SEC-HEADER> <DOCUMENT> <TYPE>DEFA14A <SEQUENCE>1 <FILENAME>formdefa14a.htm <TEXT> Document 1 - file: formdefa14a.htm
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>formdefa14a_002.jpg <TEXT> Document 3 - file: formdefa14a_002.jpg
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