Welcome to our dedicated page for TANTECH HOLDINGS SEC filings (Ticker: TANH), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Our SEC filing database is enhanced with expert analysis from Rhea-AI, providing insights into the potential impact of each filing on TANTECH HOLDINGS's stock performance. Each filing includes a concise AI-generated summary, sentiment and impact scores, and end-of-day stock performance data showing the actual market reaction. Navigate easily through different filing types including 10-K annual reports, 10-Q quarterly reports, 8-K current reports, proxy statements (DEF 14A), and Form 4 insider trading disclosures.
Designed for fundamental investors and regulatory compliance professionals, our page simplifies access to critical SEC filings. By combining real-time SEC filing updates, Rhea-AI's analytical insights, and historical stock performance data, we provide comprehensive visibility into TANTECH HOLDINGS's regulatory disclosures and financial reporting.
TANTECH HOLDINGS LTD (TANH) has approved a reverse stock split of its Class A common shares at a 1-for-50 ratio. The action becomes effective at 04:01 p.m. ET on September 3, 2026, with shares trading on a split-adjusted basis on Nasdaq starting September 4, 2026.
The reverse split will reduce outstanding common shares from 33,382,332 to approximately 667,647, with every 50 existing shares automatically combined into one share. No fractional shares will be issued, and the split will affect all shareholders uniformly. TANH will continue trading on the Nasdaq Capital Market under the same symbol with a new CUSIP.
TANTECH HOLDINGS LTD (symbol TANH) reports changes to its board of directors. Effective August 12, 2026, independent directors Shudong Wang and Mengqi Liao resigned from the board. The company states that each resignation was not due to any disagreement regarding its operations, policies, or practices.
On the same date, the remaining board members elected Jiwen Huang and Chuanjiang Xiao as independent directors and members of the nominating committee to fill the resulting vacancies. Mr. Huang and Mr. Xiao will each serve the remainder of their predecessors’ terms, scheduled to expire at the company’s 2026 annual meeting of shareholders, or until their successors are duly elected and qualified. The board determined that both new directors satisfy the independence requirements of Nasdaq Listing Rule 5605(a)(2). The filing also outlines their professional backgrounds in medical device sales and business consulting, respectively.
Tantech Holdings Ltd filed an amended report to correct typographical errors in a prior August 5, 2026 disclosure, clarifying director Pi-Hua Liu’s name and a pronoun reference in the description of director Lei Yao’s appointment.
Effective August 2, 2026, directors Weilin Zhang and Hongdao Qian resigned, with the company stating there were no disagreements on operations, policies, or practices. The Board appointed Yongxin Su as a Class III director and Co-Chief Executive Officer, and Pi-Hua Liu as a director and Co-Chief Financial Officer, both serving terms running to the 2027 annual meeting or until successors are elected. Lei Yao was elected an independent director and chair of the nominating committee to complete Mr. Qian’s term expiring at the 2026 annual meeting, and Shipu Huang was elected an independent Class I director with a term to the 2028 annual meeting. The Board determined that Mr. Yao and Mr. Huang meet the independence requirements of Nasdaq Listing Rule 5605(a)(2).
Tantech Holdings Ltd restructured its board and senior management effective August 2, 2026. Directors Weilin Zhang and Hongdao Qian resigned, with both departures stated as not arising from any disagreement regarding the company’s operations, policies, or practices.
The remaining board members elected Yongxin Su as a director and Co-Chief Executive Officer and Bihua Liu as a director and Co-Chief Financial Officer, each serving terms expiring at the 2027 annual meeting of shareholders. Lei Yao was appointed independent director and chair of the nominating committee through the 2026 annual meeting, and Shipu Huang became an independent Class I director with a term through the 2028 annual meeting. The company highlights Su’s AI and high-performance computing background, Liu’s long corporate finance experience, Yao’s banking and management background, and Huang’s IT services and operations experience.
Tantech Holdings Ltd, a foreign private issuer, reports a change in its U.S. legal counsel.
The company dismissed Kaufman & Canoles, P.C. as its counsel, effective August 2, 2026. It engaged Womble Bond Dickinson (US) LLP as new counsel on August 3, 2025.
Tantech Holdings Ltd is registering up to 43,000,026 Class A Common Shares for resale by selling shareholders; these shares are issuable upon exercise of Series E and Series F warrants. The Company states it is not selling any Common Shares under this prospectus and will receive proceeds only if Warrants are exercised for cash.
The prospectus discloses the Series E exercise price of $0.30 per share and the Series F exercise price of $0.35 per share, and cites a Nasdaq closing price of $0.4268 per share on May 29, 2026. The filing highlights substantial PRC-related regulatory, tax and cash‑remittance risks, and notes the Company is a BVI holding company with operating subsidiaries in China, Hong Kong and the U.S.
Tantech Holdings Ltd files its annual Form 20-F, reporting sharply weaker 2025 results and extensive China-related regulatory risks. Revenue declined to $38.36M in 2025 from $42.94M in 2024, while net loss attributable to common shareholders widened to $31.42M from $3.24M.
The company highlights that it is a British Virgin Islands holding company whose main operations are conducted through PRC subsidiaries, exposing investors to evolving Chinese legal, data-security and CSRC filing regimes, as well as HFCAA-related audit risks. It also discloses heavy customer and supplier concentration, reliance on distributors, and significant uncertainties around cash movement, dividends and future financing needs.
TANTECH HOLDINGS LTD CEO Liu Zheyuan filed an initial Form 3 insider ownership report for the company. This filing establishes his status as a reporting person but shows no insider purchases, sales, or other equity transactions in this submission.
Tantech Holdings Ltd completed a registered direct offering and concurrent private placement, raising aggregate gross proceeds of about $2.15 million.
The company sold 7,166,671 Common Units at $0.30 per unit, each unit including one common share, a Series E warrant to buy three shares at $0.30, and a Series F warrant to buy three shares at $0.35. Tantech plans to use the net proceeds, together with existing cash, for general corporate purposes and working capital. Directors and officers agreed to 60‑day lock-ups after closing, and the company committed to register resales of the shares and warrant shares under its existing Form F‑3 shelf.