0001493152-23-029061.txt : 20230815 0001493152-23-029061.hdr.sgml : 20230815 20230815192958 ACCESSION NUMBER: 0001493152-23-029061 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20230811 FILED AS OF DATE: 20230815 DATE AS OF CHANGE: 20230815 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Breen Michael Martin CENTRAL INDEX KEY: 0001863633 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-40023 FILM NUMBER: 231176199 MAIL ADDRESS: STREET 1: LOWSLEY HOUSE 133 HEADLEY ROAD CITY: LIPHOOK STATE: X0 ZIP: GU30 7PU ISSUER: 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 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 4 1 ownership.xml X0508 4 2023-08-11 0 0000109657 GT Biopharma, Inc. GTBP 0001863633 Breen Michael Martin C/O GT BIOPHARMA, INC. 8000 MARINA BLVD., STE. 100 BRISBANE CA 94005 1 1 0 0 Executive Chairman/Interim CEO 0 Common Stock 2023-08-11 4 A 0 200000 0.2870 A 856218 D /s/ Michael Martin Breen 2023-08-15