0000109657-26-000001.txt : 20260929 0000109657-26-000001.hdr.sgml : 20260929 20260929130617 ACCESSION NUMBER: 0000109657-26-000001 CONFORMED SUBMISSION TYPE: D PUBLIC DOCUMENT COUNT: 1 ITEM INFORMATION: Rule 506(b) provides a "safer harbor" for a private offering FILED AS OF DATE: 20260929 DATE AS OF CHANGE: 20260929 EFFECTIVENESS DATE: 20260929 FILER: COMPANY DATA: COMPANY CONFORMED NAME: GT Biopharma, Inc. CENTRAL INDEX KEY: 0000109657 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences EIN: 941620407 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-599201 FILM NUMBER: 261421459 BUSINESS ADDRESS: STREET 1: 505 MONTGOMERY STREET STREET 2: 10TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94111 BUSINESS PHONE: (800) 304-9888 MAIL ADDRESS: STREET 1: 505 MONTGOMERY STREET STREET 2: 10TH FLOOR CITY: SAN FRANCISCO STATE: CA ZIP: 94111 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 D 1 primary_doc.xml X0708 D LIVE 0000109657 GT Biopharma, Inc. 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 (415) 919-4040 DELAWARE OXIS INTERNATIONAL INC DDI PHARMACEUTICALS INC DIAGNOSTIC DATA INC /DE/ Corporation true Michael Breen 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 Executive Officer Director Chief Executive Officer Alan Urban 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 Executive Officer Chief Financial Officer Charles J. Casamento 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 Director Hilary Kramer 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 Director David C. Mun-Gavin 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA CALIFORNIA 94111 Director Biotechnology Decline to Disclose 06b false 2026-09-14 true true false 0 38958054 7750000 31208054 false 9 0 0 0 false GT Biopharma, Inc. Alan Urban Alan Urban Chief Financial Officer 2026-09-29