Tungray Technologies interim CEO holds 432,000 shares

Class B shares may be converted into Class A at holders’ option on a one-for-one basis; Class A shares carry one vote and Class B shares carry 20.

Rhea-AI Filing Summary

Tungray Technologies Inc (TRSG) reports that Liling Du, its Interim Chief Exec. Officer, indirectly held 432,000 Class A ordinary shares on September 18, 2026, through Aurora International Development Ltd., a British Virgin Islands limited liability company controlled by Du. Du is deemed to share with her husband, Wanjun Yao, the power to dispose of those shares. Class A shares carry one vote each; Class B shares carry 20 votes and may be converted into Class A at holders’ option on a one-for-one basis, while Class A shares cannot convert into Class B.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Du Liling

Role Interim Chief Exec. Officer

Type	Security	Shares	Price	Value
holding	Class A Ordinary Shares F1, F2	--	--	--

Holdings After Transaction: Class A Ordinary Shares — 432,000 shares (Indirect, By Aurora International Development Ltd.)

Footnotes (2)

1. F1. Ms. Du held a total of 432,000 Class A Ordinary Shares held by Aurora International Development Ltd, a limited liability company incorporated under the British Virgin Islands laws, a holding entity controlled by Ms. Liling Du. Ms. Du is deemed to share with her husband, Mr. Wanjun Yao, the power to dispose 432,000 Class A ordinary shares held by Aurora.
2. F2. Class B Ordinary Shares are convertible into Class A Ordinary Shares at holders' option at any time on a one for one basis. Class A Ordinary Shares are not convertible into Class B Ordinary Shares under any circumstance. Each Class A Ordinary Share entitles to 1 vote and each Class B Ordinary Share entitles to 20 votes.

Key Figures

Class A ordinary shares held: 432,000 shares Votes per Class A ordinary share: 1 vote Votes per Class B ordinary share: 20 votes +1 more

4 metrics

Class A ordinary shares held 432,000 shares Reported holding on September 18, 2026, through Aurora International Development Ltd.

Votes per Class A ordinary share 1 vote Voting rights stated for Class A ordinary shares.

Votes per Class B ordinary share 20 votes Voting rights stated for Class B ordinary shares.

Class B-to-Class A conversion ratio 1-for-1 Class B ordinary shares are convertible into Class A at holders’ option.

Key Terms

power to dispose, convertible, holding entity

3 terms

power to dispose regulatory

"share the power to dispose 432,000 Class A ordinary shares"

convertible financial

"Class B Ordinary Shares are convertible into Class A Ordinary Shares"

A convertible is a type of investment that starts as a loan or preferred stake (like a bond or preferred share) but can be exchanged for common shares of the company at a set price or under certain conditions. It matters to investors because it offers a mix of steady income and downside protection like a loan, plus the upside of stock ownership if the company does well—similar to holding a coupon that you can trade for a full ticket if the event becomes valuable.

holding entity financial

"a holding entity controlled by Ms. Liling Du"

FAQ

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

How many TRSG shares does Liling Du hold?

Liling Du is reported as indirectly holding 432,000 Class A ordinary shares through Aurora International Development Ltd. The company is described as a British Virgin Islands limited liability company controlled by Du, and she is deemed to share power to dispose of the shares with her husband, Wanjun Yao.

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

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Available on EDGAR 09/28/2026 - 09:16 PM Accepted by SEC EDGAR 09/28/2026 - 09:14 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^*

Du Liling

(Last) (First) (Middle)

C/O/ TUNGRAY TECHNOLOGIES INC

#02-01, 31 MANDAI ESTATE

(Street)

SINGAPORE SINGAPORE 729933

(City) (State) (Zip)

SINGAPORE

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
09/18/2026

3. Issuer Name and Ticker or Trading Symbol
Tungray Technologies Inc [ TRSG ]

3a. Foreign Trading Symbol

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Interim Chief Exec. Officer

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 A Ordinary Shares(1)	432,000	I	By Aurora International Development Ltd.(2)

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. Ms. Du held a total of 432,000 Class A Ordinary Shares held by Aurora International Development Ltd, a limited liability company incorporated under the British Virgin Islands laws, a holding entity controlled by Ms. Liling Du. Ms. Du is deemed to share with her husband, Mr. Wanjun Yao, the power to dispose 432,000 Class A ordinary shares held by Aurora.

2. Class B Ordinary Shares are convertible into Class A Ordinary Shares at holders' option at any time on a one for one basis. Class A Ordinary Shares are not convertible into Class B Ordinary Shares under any circumstance. Each Class A Ordinary Share entitles to 1 vote and each Class B Ordinary Share entitles to 20 votes.

	/s/ Du Liling	09/28/2026
	** 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.
* Form 3: SEC 1473 (03-26)