ASE Technology officer reports 15.26M share stake

ASE Technology Holding Co., Ltd. insider Tsai Chi-Wen, who serves as Chairman & President of SPIL, filed an initial ownership report.

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. insider Tsai Chi-Wen, who serves as Chairman & President of SPIL, filed an initial ownership report. The Form 3 shows direct beneficial ownership of 15,264,000 Ordinary Shares, establishing this baseline equity position but reporting no new buy or sell transactions.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Tsai Chi-Wen

Role Chairman & President, SPIL

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

Holdings After Transaction: Ordinary Shares — 15,264,000 shares (Direct)

FAQ

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

What does Tsai Chi-Wen’s Form 3 filing for ASX show?

The Form 3 filing shows that Tsai Chi-Wen has direct beneficial ownership of 15,264,000 Ordinary Shares of ASE Technology Holding Co., Ltd. It is an initial ownership statement, not a report of new share purchases or sales.

Is Tsai Chi-Wen buying or selling ASE Technology (ASX) shares in this Form 3?

No. The Form 3 does not report any buy or sell transactions. It only discloses Tsai Chi-Wen’s existing direct ownership of 15,264,000 Ordinary Shares as a baseline position for future regulatory reporting.

What role does Tsai Chi-Wen hold related to ASE Technology (ASX)?

Tsai Chi-Wen is reported as an officer with the title Chairman & President, SPIL. This establishes his status as a company insider, which requires public disclosure of equity holdings through SEC ownership forms.

How many ASE Technology (ASX) shares does Tsai Chi-Wen hold directly?

The filing reports direct beneficial ownership of 15,264,000 Ordinary Shares. This number reflects shares held directly rather than through derivative securities or indirect entities, providing a clear view of his baseline equity stake.

Does the ASX Form 3 include any derivative securities for Tsai Chi-Wen?

No derivative positions are listed for Tsai Chi-Wen in this Form 3. The disclosure focuses solely on direct ownership of Ordinary Shares, indicating no reported options, warrants, or other derivative securities in this particular filing.

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

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Accepted by SEC EDGAR 03/18/2026 - 02:12 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^*

Tsai Chi-Wen

(Last) (First) (Middle)

NO. 123, SEC. 3, DA FONG RD.

TANZI DISTRICT

(Street)

TAICHUNG CITY TAIWAN 427351

(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 & President, SPIL

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	15,264,000	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 Chi-Wen Tsai	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)