TANTECH HOLDINGS LTD — NT 20-F Filings
6 NT 20-F filings on record
This page lists all NT 20-F 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 6 NT 20-F 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 |
|---|---|---|---|---|
| NT 20-F | NT 20-F | 0001477932-25-003196 | May 1, 2025 | Dec 31, 2024 |
| NT 20-F | NT 20-F | 0001477932-24-002456 | May 1, 2024 | Dec 31, 2023 |
| NT 20-F | FORM NT 20-F | 0001104659-22-054783 | May 2, 2022 | Dec 31, 2021 |
| NT 20-F | NT 20-F | 0001104659-20-072936 | Jun 12, 2020 | Dec 31, 2019 |
| NT 20-F | NT 20-F | 0001144204-19-022366 | Apr 30, 2019 | Dec 31, 2018 |
| NT 20-F | NT 20-F | 0001144204-18-023981 | Apr 30, 2018 | Dec 31, 2017 |