Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001641172-25-012862
Filing Date
2025-05-29
Accepted
2025-05-29 16:15:10
Documents
1
Period of Report
2025-05-08

Document Format Files

Seq Description Document Type Size
1 ownership.html 3  
1 ownership.xml 3 1534
  Complete submission text file 0001641172-25-012862.txt   3306
Mailing Address 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA 94111
Business Address 505 MONTGOMERY STREET 10TH FLOOR SAN FRANCISCO CA 94111 (800) 304-9888
GT Biopharma, Inc. (Issuer) CIK: 0000109657 (see all company filings)

EIN.: 941620407 | State of Incorp.: DE | Fiscal Year End: 1231
SIC: 2834 Pharmaceutical Preparations
(CF Office: 03 Life Sciences)

Mailing Address C/O RITTER PHARMACEUTICALS INC. 1801 CENTURY PARK EAST, SUITE 1820 LOS ANGELES CA 90096
Business Address
Ritter Andrew J (Reporting) CIK: 0001631671 (see all company filings)

Type: 3 | Act: 34 | File No.: 001-40023 | Film No.: 251003537