6-K

UNITED STATESSECURITIES AND EXCHANGE COMMISSIONWashington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TORULE 13a-16 OR 15d-16UNDER THE SECURITIES EXCHANGE ACT OF 1934

For the month of December 2022

Commission File Number: 001-36885

TANTECH HOLDINGS LTD

(Translation of registrant’s name into English)

c/oZhejiang Forest Bamboo Technology Co., Ltd.

No.10 Cen Shan Road, Shuige Industrial Zone

LishuiCity, Zhejiang Province 323000

+86-578-226-2305

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover Form 20-F or Form 40-F.

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(1):   ¨

Indicate by check mark if the registrant is submitting the Form 6-K in paper as permitted by Regulation S-T Rule 101(b)(7):   ¨

Explanatory Note:

As previously disclosed, on April 28, 2022, the Registrant received a letter from The Nasdaq Stock Market LLC. (“Nasdaq”) notifying the Registrant that the minimum bid price per share of its common shares was below $1.00 for a period of 30 consecutive business days and that the Registrant did not meet the minimum bid price requirement set forth in Nasdaq Listing Rule 5550(a)(2) (the “Minimum Bid Price Rule”).

The Registrant was provided 180 calendar days, or until October 25, 2022, to regain compliance with the Minimum Bid Price Rule. The Registrant was unable to regain compliance with the Minimum Bid Price Rule, and on October 28, 2022, Nasdaq issued a second notification letter and granted the Registrant an additional 180 calendar days, or until April 24, 2023, to regain compliance.

Since then, Nasdaq has determined that for 14 consecutive business days, from November 9, 2022 to November 29, 2022, the closing bid price of the Registrant’s common shares has been at $1.00 per share or greater. On November 30, 2022, Nasdaq notified the Registrant that it has regained compliance with Listing Rule 5550(a)(2) and the matter is now closed.

A copy of the press release is furnished as Exhibit 99.1 to this Current Report on Form 6-K and is incorporated herein by reference.

Exhibits

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Exhibit 99.1

Tantech Holdings Regains Compliance with NASDAQMinimum Bid Price Requirement

LISHUI, China, December 1, 2022 /PRNewswire/ – Tantech Holdings Ltd (NASDAQ: TANH) (“Tantech” or the “Company”), announced today that, on November 30, 2022, it received notification from The Nasdaq Stock Market LLC ("NASDAQ") confirming the Company has regained compliance with NASDAQ’s minimum bid price requirement under Listing Rule 5550(a)(2). NASDAQ noted this matter is now closed.

About Tantech Holdings Ltd

For the last two decades, Tantech has been a leading high-tech enterprise pioneering and specializing in producing, researching and developing products based on bamboo charcoals with a well-established domestic and international sales and distribution network. Tantech expanded into the clean vehicle industry in 2017 through acquiring 70% shares of Shangchi Automobile. In November 2020, Tantech established two additional subsidiaries, Lishui Smart New Energy Automobile Co., Ltd. and Zhejiang Shangchi New Energy Automobile Co., Ltd., to produce and market electric vehicles, including automatic high-speed street sweepers and others. The Company's subsidiary, First International Commercial Factoring (Shenzhen) Co., LTD, is engaged in commercial factoring for businesses in and related to its supply chain. Tantech has recently expanded its operation into international markets. In May and July 2022, the Company established wholly-owned subsidiaries, EPakia Inc. and EPakia Canada Inc., in the United States and Canada to develop biodegradable packaging business in the North American and other international markets. The Company is fully ISO 90000 and ISO 14000 certified and has received numerous national, provincial and local honors, awards and certifications for its products and scientific research efforts. For more information, please visit: http://ir.tantech.cn.

Forward-Looking Statements

This news release contains forward-lookingstatements as defined by the Private Securities Litigation Reform Act of 1995. Forward-looking statements include statements concerningthe sales, plans, objectives, goals, strategies, future events or performance, and underlying assumptions and other statements that areother than statements of historical facts. These statements are subject to uncertainties and risks including, but not limited to, productand service demand and acceptance, changes in technology, economic conditions, the impact of competition and pricing, government regulations,and other risks contained in reports filed by the Company with the Securities and Exchange Commission. All such forward-looking statements,whether written or oral, and whether made by or on behalf of the Company, are expressly qualified by this cautionary statement and anyother cautionary statements which may accompany the forward-looking statements. In addition, the Company disclaims any obligation to updateany forward-looking statements to reflect events or circumstances after the date hereof.

For more information, please contact:

Tantech Holdings Ltd

Investor Relations

Tel: +86 (578) 226-2305

[email protected]