ASE Technology (NYSE: ASX) CAO sells 10,000 shares, retains 778,000

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. executive Uang Du‑Tsuen reported open‑market sales of Ordinary Shares. On June 1, 2026 and June 3, 2026, he sold 5,000 shares each day at prices of NT$607 and NT$617 per share, respectively. After these sales, he directly holds 778,000 Ordinary Shares.

Insider Trade Summary

Net Seller: 10,000 shares ($6,120,000)

Net Sell 2 txns

Insider Uang Du-Tsuen

Role Chief Administration Officer

Sold 10,000 shs ($6.12M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	5,000	$617.00	$3.08M
Sale	Ordinary Shares	5,000	$607.00	$3.04M

Holdings After Transaction: Ordinary Shares — 778,000 shares (Direct, null)

Footnotes (1)

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Key Figures

Shares sold June 1, 2026: 5,000 shares Shares sold June 3, 2026: 5,000 shares Total shares sold: 10,000 shares +3 more

6 metrics

Shares sold June 1, 2026 5,000 shares Open-market sale of Ordinary Shares at NT$607 per share

Shares sold June 3, 2026 5,000 shares Open-market sale of Ordinary Shares at NT$617 per share

Total shares sold 10,000 shares Combined open-market sales in early June 2026

Price per share June 1, 2026 NT$607 Ordinary Shares sale price, New Taiwan Dollars

Price per share June 3, 2026 NT$617 Ordinary Shares sale price, New Taiwan Dollars

Shares held after transactions 778,000 shares Direct ownership of Ordinary Shares after June 3, 2026 sale

Key Terms

Ordinary Shares, open-market sale, New Taiwan Dollars, Form 4

4 terms

Ordinary Shares financial

"he sold 5,000 shares each day at prices of NT$607 and NT$617 per share, respectively, of Ordinary Shares."

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.

open-market sale financial

"transactions were reported as open-market sale transactions of Ordinary Shares."

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.

New Taiwan Dollars financial

"A footnote specifies that share prices such as 607.0000 and 617.0000 are denominated in New Taiwan Dollars."

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.

Form 4 regulatory

"His Form 4 filing reports his personal open-market sales of Ordinary Shares."

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

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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)
06/01/2026

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	06/01/2026		S		5,000	D	$607(1)	783,000	D
Ordinary Shares	06/03/2026		S		5,000	D	$617(1)	778,000	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	06/03/2026
	** 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 Uang Du-Tsuen report for ASE Technology (ASX)?

Uang Du-Tsuen reported two open-market sales of ASE Technology Ordinary Shares, each for 5,000 shares. The transactions occurred on June 1, 2026 and June 3, 2026 at prices of NT$607 and NT$617 per share, respectively.

How many ASE Technology (ASX) shares did the executive sell in total?

Across the reported transactions, Uang Du-Tsuen sold a total of 10,000 Ordinary Shares. These consisted of 5,000 shares sold on June 1, 2026 and another 5,000 shares sold on June 3, 2026 in open-market transactions.

What prices did ASE Technology (ASX) shares sell for in the reported insider trades?

The reported insider trades were executed at NT$607 and NT$617 per share. The June 1, 2026 transaction was priced at NT$607 per share, while the June 3, 2026 transaction was priced at NT$617 per share for Ordinary Shares.

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

Following the June 3, 2026 sale, Uang Du-Tsuen directly holds 778,000 Ordinary Shares. This post-transaction holding reflects his remaining direct ownership after selling a combined 10,000 shares in the two open-market transactions reported.

What role does Uang Du-Tsuen hold at ASE Technology (ASX)?

Uang Du-Tsuen serves as Chief Administration Officer at ASE Technology Holding Co., Ltd. His Form 4 filing reports his personal open-market sales of Ordinary Shares and the resulting direct share ownership position following those transactions.

In what currency were the ASE Technology (ASX) insider transaction prices denominated?

The insider transaction prices were denominated in New Taiwan Dollars. A footnote in the filing specifies that the share prices listed, such as 607.0000 and 617.0000, are expressed in New Taiwan Dollars rather than another currency.