Tantech director reports Class B share holdings

TANTECH HOLDINGS LTD director Zhang Yefang has filed an initial ownership report showing indirect holdings of Class B common shares.

Rhea-AI Filing Summary

TANTECH HOLDINGS LTD director Zhang Yefang has filed an initial ownership report showing indirect holdings of Class B common shares. The filing lists 1,142 Class B shares held through TANBSOK GROUP LTD, with Ms. Zhang as the sole shareholder of that entity.

According to the disclosure, she has sole power to vote and dispose of the securities held by TANBSOK GROUP LTD. The filing does not report any new purchase or sale, but establishes her beneficial ownership position in these Class B shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Zhang Yefang

Role Director

Type	Security	Shares	Price	Value
holding	Class B Common Shares	--	--	--

Holdings After Transaction: Class B Common Shares — 1,142 shares (Indirect, Through TANBSOK GROUP LTD)

Footnotes (1)

1. F1. Such Class B common shares are held of record by TANBSOK GROUP LTD. Ms. Zhang is the sole shareholder of TANBSOK GROUP LTD and has the sole power to vote and dispose of the securities held by such entity.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider position does Zhang Yefang report in TANH?

Zhang Yefang reports beneficial ownership of 1,142 Class B common shares of TANH. These shares are held indirectly through TANBSOK GROUP LTD, where she is the sole shareholder with sole voting and dispositive power over the securities.

How are the TANH shares held by Zhang Yefang structured?

The 1,142 TANH Class B common shares are held of record by TANBSOK GROUP LTD. Zhang Yefang is the sole shareholder of that entity and has sole authority to vote and dispose of the securities it holds, indicating indirect beneficial ownership.

Does the TANH Form 3 show any insider buying or selling?

The TANH Form 3 does not show any insider buying or selling activity. It is an initial statement of beneficial ownership that records 1,142 Class B common shares held indirectly through TANBSOK GROUP LTD by director Zhang Yefang.

What type of TANH security does the Form 3 cover?

The Form 3 covers TANH Class B Common Shares. It reports a total of 1,142 Class B shares beneficially owned indirectly by director Zhang Yefang through TANBSOK GROUP LTD, where she controls voting and disposition of the securities.

Is Zhang Yefang’s TANH ownership direct or indirect?

Her TANH ownership is indirect. The 1,142 Class B common shares are held by TANBSOK GROUP LTD. As the sole shareholder of that company, she has sole power to vote and dispose of the shares, giving her beneficial ownership.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 03/17/2026 - 08:01 PM Learn about SEC filing dates

SEC Form 3

FORM 3

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0104
Estimated average burden
hours per response:			0.5

1. Name and Address of Reporting Person^*

Zhang Yefang

(Last) (First) (Middle)

NO. 10 CEN SHAN ROAD

SHUIGE INDUSTRIAL ZONE LIANDU DISTRICT

(Street)

LISHUI, ZHEJIANG PROVINCE F4 323000

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
06/29/2013

3. Issuer Name and Ticker or Trading Symbol
TANTECH HOLDINGS LTD [ TANH ]

4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

5. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Class B Common Shares	1,142	I	Through TANBSOK GROUP LTD(1)

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Such Class B common shares are held of record by TANBSOK GROUP LTD. Ms. Zhang is the sole shareholder of TANBSOK GROUP LTD and has the sole power to vote and dispose of the securities held by such entity.

Remarks:

	/s/ Yefang Zhang	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.