Official SEC submissions

Tantech Holdings SEC Filings

Direct answer

Tantech Holdings's latest SEC filing is 6-K.

It was filed on October 2, 2026, and 40 recent filings are available.

Each row links directly to the SEC document and filing index.

Official SEC EDGAR submissions

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Recent SEC filings

6-K

Current report

Filed: 2026-10-02

Report date: 2026-10-02

REPORT OF FOREIGN PRIVATE ISSUER

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6-K

Current report

Filed: 2026-09-24

Report date: 2026-09-24

FORM 6-K

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6-K

Current report

Filed: 2026-09-01

Report date: 2026-09-01

FORM 6-K

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6-K

Current report

Filed: 2026-08-19

Report date: 2026-08-19

FORM 6-K

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6-K/A

Current report

Filed: 2026-08-07

Report date: 2026-08-07

FORM 6-K/A

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6-K

Current report

Filed: 2026-08-06

Report date: 2026-08-05

FORM 6-K

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6-K

Current report

Filed: 2026-08-04

Report date: 2026-08-04

FORM 6-K

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20-F

Periodic report

Filed: 2026-05-14

Report date: 2025-12-31

FORM 20-F

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6-K

Current report

Filed: 2026-04-02

Report date: 2026-04-01

FORM 6-K

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6-K

Current report

Filed: 2026-03-31

Report date: 2026-03-31

FORM 6-K

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6-K

Current report

Filed: 2026-03-25

Report date: 2026-03-24

FORM 6-K

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6-K

Current report

Filed: 2026-03-23

Report date: 2026-03-23

FORM 6-K

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6-K

Current report

Filed: 2026-01-15

Report date: 2026-01-15

FORM 6-K

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6-K

Current report

Filed: 2025-12-31

Report date: 2025-12-31

FORM 6-K

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6-K

Current report

Filed: 2025-12-19

Report date: 2025-06-30

FORM 6-K

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6-K

Current report

Filed: 2025-12-11

Report date: 2025-12-11

FROM 6-K

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6-K

Current report

Filed: 2025-10-24

Report date: 2025-10-23

FORM 6-K

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6-K

Current report

Filed: 2025-10-17

Report date: 2025-10-17

FORM 6-K

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6-K

Current report

Filed: 2025-09-24

Report date: 2025-09-24

FORM 6-K

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20-F/A

Periodic report

Filed: 2025-09-18

Report date: 2024-12-31

FORM 20-F/A

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6-K

Current report

Filed: 2025-06-03

Report date: 2025-06-02

FORM 6-K

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20-F

Periodic report

Filed: 2025-05-15

Report date: 2024-12-31

FORM 20-F

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6-K

Current report

Filed: 2025-03-03

Report date: 2025-03-03

FORM 6-K

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6-K

Current report

Filed: 2025-02-10

Report date: 2025-02-10

FORM 6-K

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6-K

Current report

Filed: 2025-01-08

Report date: 2025-01-07

FORM 6-K

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6-K

Current report

Filed: 2025-01-06

Report date: 2025-01-06

FORM 6-K

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6-K

Current report

Filed: 2025-01-02

Report date: 2024-06-30

FORM 6-K

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6-K

Current report

Filed: 2024-12-27

Report date: 2024-12-27

FORM 8-K

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6-K

Current report

Filed: 2024-12-20

Report date: 2024-12-20

FORM 6-K

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6-K

Current report

Filed: 2024-12-16

Report date: 2024-12-11

FORM 6-K

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SC 13G/A

Ownership report

Filed: 2024-11-13

AMENDMENT NO. 1 TO SCHEDULE 13G

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SC 13G/A

Ownership report

Filed: 2024-11-06

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6-K

Current report

Filed: 2024-09-10

Report date: 2024-09-10

FORM 6-K

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6-K

Current report

Filed: 2024-08-28

Report date: 2024-08-28

FORM 6-K

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6-K/A

Current report

Filed: 2024-07-29

Report date: 2024-07-29

FORM 6-K/A

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6-K

Current report

Filed: 2024-06-17

Report date: 2024-06-17

FORM 6-K

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20-F

Periodic report

Filed: 2024-06-11

Report date: 2023-12-31

FORM 20-F

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6-K

Current report

Filed: 2024-05-21

Report date: 2024-05-21

FORM 6-K

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SC 13G

Ownership report

Filed: 2024-05-08

SCHEDULE 13G

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6-K

Current report

Filed: 2024-05-08

Report date: 2024-05-08

FORM 6-K

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Verified data

Recent filing categories: 3
Recent filings: 40
SEC CIK: 0001588084
Latest filing date: October 2, 2026

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