Key Highlights:

  • Tantech Holdings shares fell 28.53% to $17.75 on Friday, October 23, 2026.
  • The prior close of $24.83 on October 22 followed a one-day gain of about 182% (calculated from market estimates).
  • At $17.75, the stock is still about 101% above its October 21 close of roughly $8.81 (calculated).
  • Roughly 667,600 shares are outstanding after a 1-for-50 reverse split, for a market value near $11.8 million (calculated).
  • The company received a Nasdaq minimum bid price notice on March 26, 2026, with a deadline of September 22, 2026.

Tantech Holdings Stock: Why Is It Down 29% After Doubling in Two Sessions?

Tantech Holdings (NASDAQ:TANH) shares fell 28.53% to $17.75 on Friday, October 23, 2026, giving back part of a sharp rally from the previous session. The company has not announced a catalyst for the decline, and no press release or filing dated October 22 or October 23 explains either the surge or the pullback.

The prior close was $24.83 on October 22, consistent with the percentage drop (calculated). Market estimates show that close followed a gain of about 182% in one session, implying an October 21 close near $8.81 (calculated). At $17.75, the shares remain about 101% above that level (calculated).

Tantech is a China-based company that files current reports on Form 6-K as a foreign private issuer.

Reverse Split and Thin Float: What Do the Latest Filings Show?

The board approved a 1-for-50 reverse split, and the company announced the record date on September 1, 2026. A reverse split cuts the share count and lifts the quoted price in proportion, without changing the value of a holder's stake.

Market estimates put shares outstanding at roughly 667,600 after the change. At $17.75, that implies a market value near $11.8 million (calculated).

A float that small can move sharply on modest volume. The company has not linked either swing to a business event.

Nasdaq Bid-Price Deficiency: Why Did the Split Matter?

On March 26, 2026, Tantech received a notice from Nasdaq because its Class A shares had closed below $1.00 for 30 consecutive business days. The company was given 180 days, until September 22, 2026, to regain compliance.

Regaining compliance requires a closing bid of at least $1.00 for 10 consecutive business days. The company said any reverse split would need to be completed at least ten business days before the September 22 deadline.

The company has not announced whether Nasdaq has confirmed compliance.

Financing and Governance: What Else Is on File?

On March 24, 2026, Tantech agreed to exchange $45,000 of principal on a note for 74,478 Class A shares, which was completed on March 26, 2026. That works out to roughly $0.60 per share before the reverse split (calculated). The note was carved out of a $2.16 million promissory note issued on August 1, 2024.

On October 2, 2026, the company filed a report stating that its chairman had resigned and that the remaining directors appointed a replacement. The filing is the most recent governance update on record.

What to Watch Next: Can Tantech Hold Its Post-Split Price Above the Nasdaq Threshold?

Tantech fell 28.53% on October 23, 2026, after a surge of about 182% the day before, with no company announcement attached to either move. The stock still trades far above the $1.00 minimum bid, but the company has not announced a hearing, a compliance confirmation or any other dated event. The next confirmed disclosure will be a Form 6-K or its annual report on Form 20-F, and no filing date has been announced.

The shares fell 28.53% to $17.75 after a surge of about 182% the day before, and the company has not announced a catalyst.

Yes. The board approved a 1-for-50 reverse split, and the record date was announced on September 1, 2026.

Nasdaq notified the company on March 26, 2026 that its shares had closed below $1.00 for 30 consecutive business days, with a deadline of September 22, 2026.