ASE GM Chen Tien-Szu sells 530,000 ASX shares

ASE Technology Holding Co., Ltd. GM of the ASE Inc. Chung-Li Branch, Chen Tien-Szu, reported open-market sales of a total of 530,000 Ordinary Shares on April 20, 2026.

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. GM of the ASE Inc. Chung-Li Branch, Chen Tien-Szu, reported open-market sales of a total of 530,000 Ordinary Shares on April 20, 2026. The shares were sold in several trades at prices including 471, 467, and 466 New Taiwan Dollars per share, with a large block at a weighted average of 465.1067 New Taiwan Dollars per share. After these sales, Chen continues to hold more than 2.25 million Ordinary Shares directly.

Insider Trade Summary

Net Seller: 530,000 shares

Net Sell 4 txns

Insider Chen Tien-Szu

Role GM, ASE Inc. Chung-Li Branch

Sold 530,000 shs ($247.14M)

Type	Security	Shares	Price	Value
Sale	Ordinary Shares	328,000	$465.1067	$152.55M
Sale	Ordinary Shares	72,000	$466.00	$33.55M
Sale	Ordinary Shares	50,000	$467.00	$23.35M
Sale	Ordinary Shares	80,000	$471.00	$37.68M

Holdings After Transaction: Ordinary Shares — 2,251,821 shares (Direct)

Footnotes (2)

1. F1. New Taiwan Dollars.
2. F2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $465 to $465.5 New Taiwan Dollars per share. The holder undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Key Figures

Total shares sold: 530,000 shares Sale block 1: 80,000 shares at 471 New Taiwan Dollars Sale block 2: 50,000 shares at 467 New Taiwan Dollars +3 more

6 metrics

Total shares sold 530,000 shares Net open-market sales on April 20, 2026

Sale block 1 80,000 shares at 471 New Taiwan Dollars Ordinary Shares open-market sale

Sale block 2 50,000 shares at 467 New Taiwan Dollars Ordinary Shares open-market sale

Sale block 3 72,000 shares at 466 New Taiwan Dollars Ordinary Shares open-market sale

Weighted average price block 328,000 shares at 465.1067 New Taiwan Dollars Weighted average sale price disclosed in footnote

Post-transaction holdings 2,251,821+ shares Direct Ordinary Share holdings after reported sales

Key Terms

Ordinary Shares, open-market sale, weighted average price, New Taiwan Dollars

4 terms

Ordinary Shares financial

"security_title: "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

"transaction_action: "open-market sale""

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.

weighted average price financial

"The reported price in Column 4 is a weighted average price."

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

New Taiwan Dollars financial

"These shares were sold in multiple transactions at prices ranging from $465 to $465.5 New Taiwan Dollars per share."

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.

FAQ

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

What insider transaction did ASE Technology (ASX) report for Chen Tien-Szu?

ASE Technology reported that GM Chen Tien-Szu sold 530,000 Ordinary Shares in open-market transactions on April 20, 2026. These were routine Form 4 disclosures documenting multiple sales at stated prices in New Taiwan Dollars.

How many ASE Technology (ASX) shares did Chen Tien-Szu sell and at what prices?

Chen Tien-Szu sold 530,000 Ordinary Shares in four trades at 471, 467, 466, and a weighted average of 465.1067 New Taiwan Dollars per share. The filing notes that some shares were sold across multiple prices within a disclosed range.

What is Chen Tien-Szu’s role at ASE Technology (ASX) in this Form 4?

The Form 4 identifies Chen Tien-Szu as an officer of ASE Technology, serving as GM of the ASE Inc. Chung-Li Branch. The reported transactions involve his direct ownership of the company’s Ordinary Shares.

How many ASE Technology (ASX) shares does Chen Tien-Szu hold after the reported sales?

After the reported April 20, 2026 sales, Chen Tien-Szu continues to directly hold more than 2.25 million Ordinary Shares. The Form 4 provides post-transaction share balances for each reported sale entry.

In what currency were the ASE Technology (ASX) insider sales priced?

The sale prices for Chen Tien-Szu’s ASE Technology Ordinary Shares are stated in New Taiwan Dollars. A footnote clarifies that the dollar amounts shown in the price columns refer to New Taiwan Dollars per share.

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

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Accepted by SEC EDGAR 04/22/2026 - 06:30 AM EDT Learn about SEC filing dates

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^*

Chen Tien-Szu

(Last) (First) (Middle)

550, CHUNG-HWA ROAD, SECTION 1

(Street)

TAOYUAN CITY TAIWAN 32016

(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)
	GM, ASE Inc. Chung-Li Branch

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/20/2026

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	04/20/2026		S		328,000	D	$465.1067(1)(2)	2,453,821	D
Ordinary Shares	04/20/2026		S		72,000	D	$466(1)	2,381,821	D
Ordinary Shares	04/20/2026		S		50,000	D	$467(1)	2,331,821	D
Ordinary Shares	04/20/2026		S		80,000	D	$471(1)	2,251,821	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.

2. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $465 to $465.5 New Taiwan Dollars per share. The holder undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon written request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

	/s/ Georgette Yeh, attorney-in-fact for Chen Tien-Szu	04/22/2026
	** 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)