ASE Technology CAO reports 788,000 share holding

ASE Technology Holding Co., Ltd. filed an initial ownership report for Chief Administration Officer Du-Tsuen Uang.

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. filed an initial ownership report for Chief Administration Officer Du-Tsuen Uang. The Form 3 shows that Uang has direct ownership of 788,000 Ordinary Shares of ASE Technology after the reported date, providing a baseline of his equity stake as an executive.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Uang Du-Tsuen

Role Chief Administration Officer

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

Holdings After Transaction: Ordinary Shares — 788,000 shares (Direct)

FAQ

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

What does the ASE Technology (ASX) Form 3 filing for Du-Tsuen Uang show?

The Form 3 filing shows Chief Administration Officer Du-Tsuen Uang directly owns 788,000 Ordinary Shares of ASE Technology Holding Co., Ltd. It is an initial ownership disclosure, establishing his reported equity stake as an executive at the company.

How many ASE Technology (ASX) shares does Du-Tsuen Uang report owning?

Du-Tsuen Uang reports direct ownership of 788,000 Ordinary Shares of ASE Technology. This figure comes from the total shares following the reported holding entry, giving investors a sense of his personal equity exposure as Chief Administration Officer.

Does the ASE Technology (ASX) Form 3 indicate any recent insider buying or selling?

The Form 3 does not indicate any specific insider buying or selling activity. It records a holding entry with a total of 788,000 Ordinary Shares owned directly by Chief Administration Officer Du-Tsuen Uang, serving as a baseline ownership disclosure.

Is Du-Tsuen Uang a major shareholder of ASE Technology (ASX) based on this Form 3?

The filing identifies Du-Tsuen Uang as the Chief Administration Officer but not as a ten percent owner. It reports his direct holding of 788,000 Ordinary Shares, focusing on his role as an officer rather than categorizing him as a major shareholder.

What type of security is reported in the ASE Technology (ASX) Form 3 for Du-Tsuen Uang?

The Form 3 reports ownership of Ordinary Shares of ASE Technology Holding Co., Ltd. For this filing, Du-Tsuen Uang’s total direct position is listed as 788,000 Ordinary Shares, and there are no derivative securities or option positions disclosed.

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

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Accepted by SEC EDGAR 03/18/2026 - 04:04 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^*

Uang Du-Tsuen

(Last) (First) (Middle)

ROOM 1901, NO. 333

SECTION 1 KEELUNG RD.

(Street)

TAIPEI TAIWAN 110

(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)
	Chief Administration 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)
Ordinary Shares	788,000	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 Du-Tsuen Uang	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)