Trio-Tech CEO exercises right to buy 50,000 shares

The chairman and CEO had 1,310,247 directly held common shares after the exercise; the reported derivative position was zero.

Rhea-AI Filing Summary

Trio-Tech International (TRT) reported that Chairman and CEO Siew Wai Yong exercised a right to buy 50,000 common shares at an exercise price of $3.88 per share on September 28, 2026. The reported derivative position after the transaction was 0 shares, and his direct common-stock holdings afterward were 1,310,247 shares. No Rule 10b5-1 plan is reported.

Insider Trade Summary

50,000 shares exercised/converted

Exercise 2 txns

Insider YONG SIEW WAI

Role CHAIRMAN AND CEO

Type	Security	Shares	Price	Value
Exercise	TRT Common Stock (Right to buy)	50,000	$0.00	$0.00
Exercise	TRT Common Stock	50,000	$3.88	$194K

Holdings After Transaction: TRT Common Stock (Right to buy) — 0 contracts (Direct); TRT Common Stock — 1,310,247 shares (Direct)

Key Figures

Shares acquired on exercise: 50,000 shares Exercise price: $3.88 per share Direct common shares after transaction: 1,310,247 shares +1 more

4 metrics

Shares acquired on exercise 50,000 shares September 28, 2026

Exercise price $3.88 per share September 28, 2026

Direct common shares after transaction 1,310,247 shares Following the September 28, 2026 transaction

Derivative position after transaction 0 shares Following the September 28, 2026 transaction

Key Terms

derivative security, Right to buy, exercise price

3 terms

derivative security financial

"Exercise or conversion of derivative security"

A derivative security is a financial contract whose value comes from the price or performance of something else, such as a stock, bond, commodity, or market index. For investors it acts like an insurance policy or a wager: it can be used to protect against losses, lock in prices, or amplify gains and losses, so it can change a portfolio’s risk and potential return without owning the underlying asset directly.

Right to buy financial

"TRT Common Stock (Right to buy)"

exercise price financial

"exercise price of $3.88 per share"

The exercise price is the fixed amount at which you can buy or sell an asset, like a stock, when using an options contract. It matters because it helps determine whether exercising the option will be profitable or not, depending on the current market price. Think of it as the set price you agree on today to buy or sell later.

FAQ

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

How many TRT shares did Siew Wai Yong acquire through the exercise?

Siew Wai Yong acquired 50,000 common shares through the exercise at $3.88 per share on September 28, 2026. His direct common-stock holdings afterward were 1,310,247 shares.

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

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Available on EDGAR 09/29/2026 - 09:01 AM Accepted by SEC EDGAR 09/29/2026 - 09:01 AM Learn about SEC filing dates

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

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:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

YONG SIEW WAI

(Last) (First) (Middle)

7 PANDAN VALLEY

16-502 POINCIANA TOWER

(Street)

SINGAPORE 597631

(City) (State) (Zip)

SINGAPORE

(Country)

2. Issuer Name and Ticker or Trading Symbol
TRIO-TECH INTERNATIONAL [ TRT ]

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
09/28/2026

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

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

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

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
TRT Common Stock	09/28/2026		M		50,000	A	$3.88	1,310,247	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
TRT Common Stock (Right to buy)	$3.88	09/28/2026		M			50,000	03/24/2022	03/23/2027	Common Stock	50,000	$0	0	D

Explanation of Responses:

	/s/ Yong Siew Wai	09/29/2026
	** 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 4 (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 4: SEC 1474 (03-26)