GT Biopharma, Inc. — SC 13G/A Filings
31 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by GT Biopharma, Inc. (GTBP), sorted by most recent first. Each row links to the full filing on EdgarLookup. GT Biopharma, Inc. has filed 31 SC 13G/A documents with the SEC since 1995. To view all SEC filings by GT Biopharma, Inc., see the full filings list.
All
10-C
10-K
10-K/A
10-K405
10-Q
10-Q/A
10KSB
10KSB/A
10QSB
10QSB/A
3
3/A
4
4/A
424B3
424B4
424B5
5
8-A12B
8-K
8-K/A
ARS
CERT
CORRESP
D
D/A
DEF 14A
DEF 14C
DEFA14A
DEFR14A
EFFECT
NT 10-K
NT 10-K/A
NT 10-Q
POS AM
PRE 14A
PRE 14C
PRER14A
PRER14C
REGDEX
RW
S-1
S-1/A
S-1MEF
S-3
S-3/A
S-8
SB-2
SB-2/A
SC 13D
SC 13D/A
SC 13G
SC 13G/A
SC 14F1
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | AMENDMENT NO. 17 TO SCHEDULE 13G | 0001683168-24-003805 | May 23, 2024 | — |
| SC 13G/A | — | 0001172661-24-001266 | Feb 14, 2024 | — |
| SC 13G/A | AMENDMENT NO. 16 | 0001683168-22-001393 | Mar 3, 2022 | — |
| SC 13G/A | — | 0000921895-22-000270 | Jan 28, 2022 | — |
| SC 13G/A | AMENDMENT NO. 6 TO SCHEDULE 13G | 0001213900-22-002288 | Jan 18, 2022 | — |
| SC 13G/A | — | 0001683168-21-001451 | Apr 16, 2021 | — |
| SC 13G/A | AMENDMENT NO. 15 | 0001683168-21-000429 | Feb 8, 2021 | — |
| SC 13G/A | AMENDMENT NO. 5 TO SCHEDULE 13G | 0001213900-21-007007 | Feb 5, 2021 | — |
| SC 13G/A | AMENDMENT NO. 13 | 0001683168-20-001655 | May 18, 2020 | — |
| SC 13G/A | AMENDMENT NO. 12 | 0001683168-20-000338 | Feb 4, 2020 | — |
| SC 13G/A | AMENDMENT NO. 4 TO SCHEDULE 13G | 0001213900-20-001195 | Jan 16, 2020 | — |
| SC 13G/A | AMENDMENT NO. 3 TO SCHEDULE 13G | 0001213900-19-002332 | Feb 13, 2019 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT | 0001683168-19-000333 | Feb 12, 2019 | — |
| SC 13G/A | SC 13G/A2 JAMES W HEAVENER | 0000939798-19-000004 | Feb 5, 2019 | — |
| SC 13G/A | SC 13G/A JAMES W HEAVENER | 0000939798-19-000002 | Jan 29, 2019 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT | 0001683168-18-000342 | Feb 7, 2018 | — |
| SC 13G/A | AMENDMENT NO. 9 | 0001683168-17-002609 | Oct 10, 2017 | — |
| SC 13G/A | AMENDMENT NO. 2 TO SCHEDULE 13G | 0001213900-17-009849 | Sep 20, 2017 | — |
| SC 13G/A | AMENDMENT NO. 1 TO SCHEDULE 13G | 0001213900-17-001248 | Feb 13, 2017 | — |
| SC 13G/A | SC 13G/A | 0001683168-17-000290 | Feb 10, 2017 | — |
| SC 13G/A | AMENDMENT NO. 7 | 0001019687-16-005749 | Apr 5, 2016 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT | 0001019687-16-004920 | Jan 25, 2016 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT | 0001019687-15-000541 | Feb 11, 2015 | — |
| SC 13G/A | — | 0001019687-13-000443 | Feb 13, 2013 | — |
| SC 13G/A | SCHEDULE 13G AMENDMENT | 0001019687-11-000540 | Feb 15, 2011 | — |
| SC 13G/A | AMENDED SCHEDULE 2 | 0001019687-10-000596 | Feb 16, 2010 | — |
| SC 13G/A | AMENDMENT NO. 2 | 0001019687-09-000481 | Feb 13, 2009 | — |
| SC 13G/A | — | 0000919574-07-000979 | Feb 14, 2007 | — |
| SC 13G/A | — | 0000919574-06-001243 | Feb 14, 2006 | — |
| SC 13G/A | AMENDMENT NO. 1 | 0001019687-06-000330 | Feb 14, 2006 | — |
| SC 13G/A | — | 0000766524-05-000056 | Feb 11, 2005 | — |