Tantech Holdings Ltd. (TANH)
Nasdaq: TANH · Industrial Organic Chemicals · Zhejiang, CN · filing with the SEC since 2013
Filings
217 filings since 2017 beside 6 insider forms · Non-accelerated filer · read from EDGAR on Nov 13, 2026Due nextNon-accelerated filer
20-F
Annual report, foreign filer for the fiscal year ending Dec 31, 2026Foreign filers have four months after the fiscal year ends.
by Apr 30, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files.
Filings a yearinsider forms included
1127173027261926
2026 counts to Nov 13, 2026.
SEC letters: 7 in the last 36 months, the newest Jun 15, 2026.A late-filing notice, Form NT 20-F, filed May 1, 2026.A late-filing notice, Form NT 20-F, filed May 1, 2025.A late-filing notice, Form NT 20-F, filed May 1, 2024.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
40 of 217 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.