ASE Technology (NYSE: ASX) GM files initial Form 3 ownership

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. filed an initial statement of beneficial ownership for company officer Yu Chih-Wen, who serves as GM, SPIL SuZhou. This Form 3 establishes the insider’s reporting status with the SEC and, in this filing, does not list any reportable transactions.

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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

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1. Name and Address of Reporting Person^*

Yu Chih-Wen

(Last) (First) (Middle)

NO. 288, FENG LI STREET

SUZHOU INDUSTRIAL PARK

(Street)

SUZHOU CITY 215123

(City) (State) (Zip)

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)
	GM, SPIL SuZhou

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)

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

No securities are beneficially owned.

	/s/ Georgette Yeh, attorney-in-fact for Chih-Wen Yu	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)

FAQ

What does the Form 3 filing for ASX and Yu Chih-Wen represent?

It is an initial statement of beneficial ownership for Yu Chih-Wen as an officer of ASE Technology. The filing formally registers this insider with the SEC and establishes a baseline for future ownership and transaction reporting requirements.

What role does Yu Chih-Wen hold at ASE Technology (ASX)?

Yu Chih-Wen is identified as an officer of ASE Technology with the title GM, SPIL SuZhou. This role qualifies the individual as an insider, triggering ongoing reporting obligations for equity holdings and future transactions under SEC rules.

Does the ASX Form 3 for Yu Chih-Wen report any stock transactions?

No stock transactions are reported in this Form 3. The filing only establishes Yu Chih-Wen’s status as a reporting insider and does not include purchases, sales, option exercises, or other equity movements in the disclosed summary data.

Why is ASE Technology (ASX) required to file a Form 3 for this officer?

Form 3 is required when someone becomes an insider, such as an officer, director, or large shareholder. For ASE Technology, Yu Chih-Wen’s role as GM, SPIL SuZhou triggers the need to disclose initial beneficial ownership information to the SEC and investors.

How does this Form 3 affect future insider reporting for ASX?

This Form 3 sets up Yu Chih-Wen as a recognized insider for ASE Technology. Future Forms 4 or 5 will report changes in this insider’s holdings or transactions, providing ongoing transparency about trading activity related to the company’s securities.