[Form 4] ASE Technology Holding Co., Ltd. Insider Trading Activity

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. Chief Administration Officer Uang Du-Tsuen reported open-market sales of ordinary shares. Across three days, Uang sold a total of 11,000 shares at prices between 611 and 697 New Taiwan Dollars per share. After these transactions, Uang directly holds 767,000 ordinary shares, so the disposals represent a small portion of the reported position.

Insider Trade Summary

Net Seller: 11,000 shares ($7,259,000)

Net Sell 3 txns

Insider Uang Du-Tsuen

Role Chief Administration Officer

Sold 11,000 shs ($7.26M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	3,000	$697.00	$2.09M
Sale	Ordinary Shares	5,000	$667.00	$3.33M
Sale	Ordinary Shares	3,000	$611.00	$1.83M

Holdings After Transaction: Ordinary Shares — 767,000 shares (Direct, null)

Footnotes (1)

1. [object Object]

Key Figures

Total shares sold: 11,000 shares Post-sale holdings: 767,000 shares June 23 sale: 3,000 shares at NT$697 +3 more

6 metrics

Total shares sold 11,000 shares Net open-market sales in June 2026

Post-sale holdings 767,000 shares Ordinary shares held after June 23, 2026

June 23 sale 3,000 shares at NT$697 Open-market sale of ordinary shares

June 22 sale 5,000 shares at NT$667 Open-market sale of ordinary shares

June 18 sale 3,000 shares at NT$611 Open-market sale of ordinary shares

Net buy/sell direction Net sale of 11,000 shares Form 4 transaction summary

Key Terms

open-market sale, Ordinary Shares, non-derivative, New Taiwan Dollars

4 terms

open-market sale financial

"transaction_action is described as "open-market sale" for each trade"

An open-market sale is when a shareholder sells existing shares directly on a public exchange to any willing buyer, rather than through a private deal. Think of it like putting goods on a busy market stall where price is set by supply and demand; for investors it matters because such sales increase available supply, can put short-term downward pressure on the stock price, and signal changes in liquidity or investor confidence.

Ordinary Shares financial

"security_title is listed as "Ordinary Shares" for all transactions"

Ordinary shares are a type of ownership stake in a company, giving shareholders a right to participate in the company’s profits and decision-making through voting. They are similar to owning a piece of a business, and their value can rise or fall based on the company's performance. Investors buy ordinary shares to potentially earn dividends and benefit from the company's growth over time.

non-derivative financial

"transaction_type is reported as "non-derivative" for each sale"

New Taiwan Dollars financial

"footnote F1 states "New Taiwan Dollars." for price currency"

The New Taiwan Dollar (NTD) is the official currency used in Taiwan for everyday transactions, like buying groceries or paying bills. For investors, it matters because its value can influence Taiwan’s economy and affect the profitability of investments related to the region. Changes in the currency’s strength can also impact international trade and financial markets involving Taiwan.

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Form 4 Insider Transactions: What Each Field Means →

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^*

Uang Du-Tsuen

(Last) (First) (Middle)

ROOM 1901, NO. 333

SECTION 1 KEELUNG RD.

(Street)

TAIPEI TAIWAN 110

(City) (State) (Zip)

TAIWAN

(Country)

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

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Administration Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
06/18/2026

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
Ordinary Shares	06/18/2026		S		3,000	D	$611(1)	775,000	D
Ordinary Shares	06/22/2026		S		5,000	D	$667(1)	770,000	D
Ordinary Shares	06/23/2026		S		3,000	D	$697(1)	767,000	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

Explanation of Responses:

1. New Taiwan Dollars.

	/s/ Georgette Yeh, attorney-in-fact for Du-Tsuen Uang	06/23/2026
	** 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)

FAQ

What insider transactions did ASE Technology (ASX) report for Uang Du-Tsuen?

ASE Technology’s Chief Administration Officer Uang Du-Tsuen reported three open-market sales totaling 11,000 ordinary shares. The trades occurred on June 18, 22, and 23, 2026, and were executed at prices between 611 and 697 New Taiwan Dollars per share.

At what prices were the ASE Technology (ASX) shares sold by Uang Du-Tsuen?

The shares were sold at prices of 611, 667, and 697 New Taiwan Dollars per share. These prices correspond to open-market sales of 3,000, 5,000, and 3,000 ordinary shares on June 18, 22, and 23, 2026, respectively.

How many ASE Technology (ASX) shares did Uang Du-Tsuen sell in total?

Uang Du-Tsuen sold a total of 11,000 ordinary shares in three transactions. The individual trades were 3,000 shares, 5,000 shares, and 3,000 shares, all reported as open-market sales of non-derivative securities during June 2026.

How many ASE Technology (ASX) shares does Uang Du-Tsuen hold after these sales?

After the reported sales, Uang Du-Tsuen directly holds 767,000 ordinary shares. The filings show post-transaction holdings of 775,000 shares after June 18, 770,000 after June 22, and 767,000 after the June 23 sale, reflecting the cumulative disposals.

Were derivatives involved in Uang Du-Tsuen’s ASE Technology (ASX) transactions?

No derivatives were involved in these transactions. All three trades are reported as non-derivative ordinary share sales, and the derivative position summary is empty, indicating no option or other derivative exercises or conversions in this Form 4 filing.