TANTECH HOLDINGS LTD — 20-F/A Filings
7 20-F/A filings on record
This page lists all 20-F/A filings submitted to the SEC by TANTECH HOLDINGS LTD (TANH), sorted by most recent first. Each row links to the full filing on EdgarLookup. TANTECH HOLDINGS LTD has filed 7 20-F/A documents with the SEC since 2013. To view all SEC filings by TANTECH HOLDINGS LTD, see the full filings list.
All
144
20-F
20-F/A
3
424B1
424B3
424B5
6-K
6-K/A
8-A12B
CERTNAS
CORRESP
D
DRS
DRS/A
DRSLTR
EFFECT
F-1
F-1/A
F-3
F-3/A
NT 20-F
POS AM
RW
RW WD
S-8
SC 13D
SC 13G
SC 13G/A
SCHEDULE 13G
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 20-F/A | FORM 20-F/A | 0001477932-25-006862 | Sep 18, 2025 | Dec 31, 2024 |
| 20-F/A | 20-F/A | 0001410578-23-000028 | Jan 17, 2023 | Dec 31, 2021 |
| 20-F/A | 20-F/A | 0001410578-22-003584 | Dec 23, 2022 | Dec 31, 2021 |
| 20-F/A | 20-F/A | 0001104659-20-081237 | Jul 6, 2020 | Dec 31, 2019 |
| 20-F/A | 20-F/A | 0001144204-16-140599 | Dec 21, 2016 | Dec 31, 2015 |
| 20-F/A | 20-F/A | 0001144204-16-136617 | Nov 28, 2016 | Dec 31, 2015 |
| 20-F/A | FORM 20-F/A | 0001144204-16-130120 | Oct 28, 2016 | Dec 31, 2015 |