ASE Technology officer reports 366K-share stake

ASE Technology Holding Co., Ltd. officer Wei Chen-Yen filed an initial ownership report on Form 3 as Chairman of USI Co., Ltd. The filing shows direct ownership of 366,115 Ordinary Shares of ASE Technology Holding.

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. officer Wei Chen-Yen filed an initial ownership report on Form 3 as Chairman of USI Co., Ltd. The filing shows direct ownership of 366,115 Ordinary Shares of ASE Technology Holding. The filing does not report any recent share purchases or sales, only current holdings.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Wei Chen-Yen

Role Chairman, USI Co., Ltd.

Type	Security	Shares	Price	Value
holding	Ordinary Shares	--	--	--

Holdings After Transaction: Ordinary Shares — 366,115 shares (Direct)

FAQ

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

What does Wei Chen-Yen’s Form 3 filing for ASX show?

The Form 3 shows that Wei Chen-Yen, an officer (Chairman of USI Co., Ltd.), directly holds 366,115 Ordinary Shares of ASE Technology Holding Co., Ltd. It is an initial ownership statement, not a report of new trades.

Did Wei Chen-Yen buy or sell ASX shares in this Form 3?

No, this Form 3 does not report any new buy or sell transactions. It simply discloses Wei Chen-Yen’s existing direct ownership of 366,115 Ordinary Shares in ASE Technology Holding at the time of the filing.

How many ASE Technology (ASX) shares does Wei Chen-Yen own?

According to the Form 3, Wei Chen-Yen directly owns 366,115 Ordinary Shares of ASE Technology Holding Co., Ltd. This figure reflects his reported beneficial ownership following the reporting date, with no derivative securities listed.

What is Wei Chen-Yen’s role in relation to ASE Technology (ASX)?

In the Form 3, Wei Chen-Yen is identified as an officer with the title Chairman, USI Co., Ltd., a related entity. The filing connects this position to his reported direct share ownership in ASE Technology Holding Co., Ltd.

Does the ASX Form 3 include any derivative securities for Wei Chen-Yen?

No, the Form 3 derivative section for Wei Chen-Yen is empty. The filing lists only direct ownership of 366,115 Ordinary Shares of ASE Technology Holding, with no options, warrants, or other derivative positions reported.

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

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Accepted by SEC EDGAR 03/18/2026 - 02:15 PM EDT 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^*

Wei Chen-Yen

(Last) (First) (Middle)

NO.135, LANE 351

SEC. 1, TAIPING RD.

(Street)

TSAOTUEN, NANTOU TAIWAN 00000

(City) (State) (Zip)

TAIWAN, PROVINCE OF CHINA

(Country)

2. Date of Event Requiring Statement (Month/Day/Year)
03/18/2026

3. Issuer Name and Ticker or Trading Symbol
ASE Technology Holding Co., Ltd. [ ASX ]

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)
	Chairman, USI Co., Ltd.

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)
Ordinary Shares	366,115	D

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:

Remarks:

Exhibit List - Exhibit 24.1 - Power of Attorney

	/s/ Georgette Yeh, attorney-in-fact for Chen-Yen Wei	03/18/2026
	** 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)