Stock Code: 3711
NYSE: ASX

ASEH

ASE TECHNOLOGY HOLDING CO., LTD.

Notice and Agenda

Of

2026 Annual Shareholders’ Meeting

June 24, 2026

Summary Translation

Note : This English translation is for reference purposes only. In the event of any discrepancy between the Chinese original and this English translation, the Chinese original shall prevail.

Meeting Notice

To:
Shareholder

The Board of Directors, ASE Technology Holding Co., Ltd.
105412
Address: B1, No. 8, Dongxing Road, Songshan District, Taipei City
Stock Affairs Agent of ASE Technology Holding Co., Ltd.
Stock Registration Department, President Securities Corporation
Exclusive line for stock affairs agency: (02)2746-3797 (Representative line)
Website: http://www.pscnet.com.tw/
Stock Code No.: 3711

The Personal information collected by the Stock Registration Department is processed or used solely for stock affairs purposes, and related information will be archived according to regulations or for the agreed archiving periods. Please contact the Stock Registration Department if you intend to exercise related rights.

Coupon 1: Sign-in Card

ASE Technology Holding Co., Ltd.
2026 Annual Shareholders’ Meeting
Sign-in Card for attendance

Time: 10:00 a.m., June 24(Wednesday), 2026
Venue: Zhuang Jing Auditorium, No. 600-4, Jiachang Road, Nanzi District, Kaohsiung City, Taiwan

Shareholder No.:

Name of shareholder or agent:

Number of Shares Held:

Please sign here if you intend to attend the meeting in person.

※Shareholders, solicitors, proxy agent and designated representatives should bring original photo ID documents for verification when attending the shareholders’ meeting; if a juristic person appoints a representative to attend, an appointment letter affixed with the corporate’s seal is also required.
※Where the sign-in card and the proxy form are both signed or affixed with the shareholder’s seal, the shareholder is deemed to have attended in person, and where the proxy form is delivered by the shareholder to the solicitor or proxy agent, attendance is deemed to have been made by proxy.

Serial No.:

Coupon 2

If you wish to mandate an agent to attend the meeting on your behalf, please fill out this Coupon and send it back.

Serial No.: Checked and Verified by: (13) Stock Code No.: 3711

| Proxy Form | I. Purchase of proxy at a price in the form of cash or for other interests is prohibited.
II. Upon discovery of illegal acquisition or use of proxy, one can enclose substantial evidence and report it to the Taiwan Depository and Clearing Corporation; once found to be true, the informer will be entitled to a reward of NTS200,000 at maximum. To report a case, please call: +886-2-25473733. | Principal (Shareholder) | Serial No. | 52 ASEH |
| --- | --- | --- | --- | --- |
| 1. _(The principal must fill out in person and it cannot be replaced by affixation of seal) is hereby mandated as the proxy agent for the undersigned shareholder, to attend the Annual Shareholders’ Meeting to be held on June 24, 2026, representing the undersigned shareholder to exercise the following rights as authorized:
☐(1) Representing the undersigned shareholder to exercise the rights of shareholders with regard to the matters in the agenda. (full authorization)
☐(2) Representing the undersigned shareholder to exercise the rights and to express the opinions of the undersigned shareholder with regard to the following proposals. When none of the following proposals is checked, it is considered that all the proposals are ratified or approved.
I. Ratification of 2025 Business Report and Financial Statements (I) ☐ Ratify (II) ☐ Object (III) ☐ Abstain
II. Ratification of 2025 earnings distribution proposal (I) ☐ Ratify (II) ☐ Object (III) ☐ Abstain
2. Where the undersigned shareholder has not checked the scope of authorization or has checked multiple items in the foregoing options (☐), it will be regarded as full authorization. If the stock affairs agency is authorized to represent the shareholder, however, the agent shall exercise shareholders’ rights as authorized under (2) aforementioned and shall not accept the full authorization.
3. The agent of the undersigned shareholder may have the right to handle any extempore motions at his/her discretion in the meeting.
4. Please mail the attendance pass or presence sign-in card to the agent. If the meeting date is changed for reasons, this Proxy is still valid (limited to this meeting only).
To
ASE Technology Holding Co., Ltd.
Date of authorization _/_/_ (YYYY/MM/DD) | | Shareholder No. | | Signature or Seal |
| | | Name or Title | | |
| | | Number of shares held | | |
| | | Solicitor | | Signature or Seal |
| | | Account No. | | |
| | Name or Title | | | |
| Proxy Agent | | Signature or Seal | | |
| 3. The agent of the undersigned shareholder may have the right to handle any extempore motions at his/her discretion in the meeting.
4. Please mail the attendance pass or presence sign-in card to the agent. If the meeting date is changed for reasons, this Proxy is still valid (limited to this meeting only).
To
ASE Technology Holding Co., Ltd.
Date of authorization _/_/_ (YYYY/MM/DD) | Account No. | | | |
| | Name or Title | | | |
| | ID No. or Tax ID number | | | |
| | Address | | | |

Solicitation Venue and Personnel (Signature/Seal):

Coupon 3

※ 2026 Annual Shareholders’ Meeting Souvenir Collection Information※

Souvenir: Storage Container (An alternative souvenir of equal value will substitute if quantity prepared is insufficient.)
The general principle for gifting souvenirs: Souvenirs will not be distributed to shareholders with less than 1,000 shares, unless one of the following conditions is met.

(1) Shareholders who attend the annual shareholders’ meeting in person may collect the souvenir when registering for attendance at the venue on the day of the meeting before it ends.

(2) Shareholders who vote electronically. (Please refer to Item 6 of this Collection Information.)

Souvenirs will not be mailed or distributed after the collection period.
Instructions for on-site souvenir collection on the meeting day:

(1) For Shareholders or Proxy Agents who attend the Annual Shareholder’s Meeting, please collect the souvenir at the venue when registering for attendance on the day of the meeting before it ends.

(2) For Shareholders who hold 1,000 shares or more and will not attend the annual shareholders’ meeting, please present Coupon 1 and Coupon 2 of this original meeting notice at the venue on the day of the meeting before it ends to collect the souvenir.

※ On the day of the shareholders’ meeting, the meeting notice can only be reissued when original identification document is presented. Souvenirs will be distributed until the meeting ends.

Shareholders holding 1,000 shares or more who cannot attend the meeting and wish to appoint a Proxy Agent to attend and collect the souvenir, please sign or seal the Proxy Form (the area outlined in bold red on Coupon 2) and present Coupons 1 and 2 of this meeting notice to collect

the souvenir at the Stock Registration Department of President Securities Corporation (Address: 1F, No. 8, Dongxing Road, Songshan District, Taipei City; Tel: (02) 2746-3797) between 8:30 a.m. and 4:30 p.m., from June 4 to June 15, 2026 (business days only).

Shareholders who have successfully exercised their voting rights electronically (from May 25, 2026 to June 21, 2026) may collect the souvenir via the following methods.

(1) Shareholders who plan to attend the meeting in person, please register for attendance at the venue on the day of the meeting before it ends and collect the souvenir.

(2) Shareholders who are unable to visit the venue may visit the Stock Registration Department of President Securities Corporation (Address: 1F, No. 8, Dongxing Road, Songshan District, Taipei City; Tel: (02) 2746-3797) to collect the souvenir, from June 24 to June 26, 2026, between 8:30 a.m. and 4:30 p.m.

※ Souvenirs will not be distributed to shareholders who have not successfully exercised their voting rights via electronic means during this period.

Shareholders with 1,000 shares or more may collect the souvenir from June 15, 2026 to June 18, 2026, between 8:30 a.m. and 4:30 p.m. by presenting this notice at No. 8, Dongxing Road, Songshan District, Taipei City or at No. 26, Jing 3rd Rd., Nanzi District, Kaohsiung City.
You may inquire about souvenir-related information on the exclusive webpage of souvenirs on the website of President Securities Corporation. Please visit https://www.pscnet.com.tw/pscnetStockTransfer/shareholderListed/list.do (Available in Chinese only)

62 ASE Technology Holding Co., Ltd. Cash Dividend Remittance (Change) Application Form

Shareholder No.
Account Name
Telephone No.
Original Registration (Form submission not required if there are no errors)	Name of Bank		Bank Code		Branch Account title Account No. Check digit

(New) Change	Name of Bank		Bank Code		Branch	Account title		Account No.	Check digit

	Post Office	Passbook (H)	700	Branch No.			-	Name		-

For Shareholders who choose to have cash dividends deposited directly into their bank accounts and wish to add or change their bank account details, please fill in the form completely and the bank account must be held under the shareholder's own name.
For shareholders who have not completed the Cash Dividend Remittance (Change) Application Form, the latest updated account information in the securities owners' register provided by the Taiwan Depository and Clearing Corporation as of the ex-dividend date shall prevail.
For dividends paid by check or in the event of a rejected remittance due to inconsistent account information, a "Account Payee Only Check" shall be sent via registered mail to the correspondence address on file.
This application form, duly completed and affixed with the shareholder's seal/signature, must be delivered to the Stock Registration Department of President Securities Corporation by June 24, 2026.

Coupon 4

Atten: B1, No. 8 Dongxing Road, Songshan District 105412, Taipei City

Stock Affairs Agent of ASE Technology Holding Co., Ltd.

Stock Registration Department, President Securities Corporation

Postage Required

_F, ___, ___ Alley, ___ Lane, ___ Road/Street, ___ Sec., ___ Neighborhood/Village, ___ District/Township, ___ County/City

Sender:

Coupon 5

Form of Juristic Person's Appointment of Representative

The undersigned does hereby appoint ____ to represent the undersigned attending 2026 annual general meeting of shareholders of ASE Technology Holding Co., Ltd., exercise shareholder's right against relevant matters in the meeting, and deal with extemporary motions during the meeting on behalf of the undersigned.

Shareholder No.:

Name of Shareholder:

Stamp Here

Date:

Instructions for Use of the Proxy

Before solicitation for proxy is made by a third party, shareholders are advised to ask the solicitor to provide information on written and advertising contents or refer to ASEH-compiled general information of the solicitor’s written and advertising contents in order to fully understand the background information of the solicitor and the candidate to be elected as well as solicitor’s opinions on agenda items.
If the proxy agent is not a shareholder, he/she should fill out his/her ID number or the Tax ID number in the Shareholder No. column.
If the solicitor is a trust enterprise or stock affairs agency, please fill out the Tax ID number in the Shareholder No. column.
All other matters related to the agenda shall be conducted in accordance with the Regulations Governing the Use of Proxies for Attendance at Shareholder Meetings of Public Companies.
If the proxy has already been delivered to ASEH and the shareholder decides he/she wishes to personally attend the meeting or exercise his or her voting rights by written or electronic means, the concerned shareholder should notify ASEH in writing two days prior to the Shareholders’ Meeting to

rescind the notice for proxy. If the shareholder fails to do so by the deadline, the voting right cast by the proxy agent shall govern.

The Company has appointed the Stock Registration Department of President Securities Corporation (1F, No. 8, Dongxing Road, Songshan District, Taipei City; Tel: (02)2746-3797) to serve as the proxy agent for the Company’s shareholders at this Annual Shareholders’ Meeting. Shareholders who are unable to attend in person and wish to exercise their rights with respect to the proposals submitted by the Board of Directors may sign or affix their seal in the “Principal” section of the Proxy Form, indicate their voting instructions for each proposal (1. Ratification of 2025 Business Report and Financial Statements; 2. Ratification of 2025 earnings distribution proposal), and appoint the Stock Registration Department of President Securities Corporation as their Proxy Agent.
Please refer to Coupon 2 for the format of the Proxy.

Coupon 6

Notice for Meeting

Please be informed that we schedule to hold the 2026 Annual Shareholders’ Meeting on Wednesday, June 24, 2026 at 10:00 a.m. (shareholders’ attendance registration starts at 9:00 am sharp; please sign-in at the meeting venue) at Zhuang Jing Auditorium, 600-4 Jiachang Road, Nanzi District, Kaohsiung City, Taiwan. Main contents of the meeting agenda: (I) Status report: 1. 2025 Business Report 2. Report by Audit Committee on review of the 2025 Annual Accounting Final Reports and Statements 3. Report on the 2025 distribution of employee compensation (including grassroots employees) and director remuneration 4. Report on the 2025 earnings distribution of cash dividend (II) Matters for ratification: 1. Ratification of 2025 Business Report and Financial Statements 2. Ratification of 2025 earnings distribution proposal (III) Extempore Motions
It is proposed to distributed cash dividend NT$6.6 per share in this meeting. If at a later date new shares are issued to employees because of exercises of Employee Stock Option, or the Company's convertible bond holders exercise their right of conversion, or new shares are issued by the Company for cash capital increase, or issuance or reclaim of restricted stock awards of the Company, or there is a buyback of the Company's stock, or transfer or cancellation of the Company's treasury stock, for the facts that will affect the dividend rate of the shareholders and thus adjustments are required, it is proposed to authorize the Chairman of the Board to handle the situation in his sole discretion and make adjustments accordingly. Cash dividends of this year will be calculated to the nearest dollar according to distribution ratio, and amount less than one dollar will be rounded down. The aggregated amount of the fractional amounts which are less than one dollar will be recorded as shareholder's equity.
According to Article 165 of the Company Act, share transfer registration shall be suspended from April 26, 2026 to June 24, 2026.
Besides announcement to the public, a specific letter of invitation with attachments of one sign-in-card for attendance and one Proxy of the Annual Shareholders’ Meeting will be delivered, and you are cordially invited to attend. If you wish to attend the meeting in person, please fill out Coupon 1 (sign-in card for attendance) and register at the meeting venue on the date of the meeting. If you intend to mandate a proxy agent to attend the meeting, please fill in the Coupon 2 (Proxy Statement) and Coupon 1 (sign-in card for attendance), fold them together, and mail them back to the Company’s stock affairs agent, the Stock Registration Department of President Securities Corporation, ensuring they are received at least 5 days before the meeting. After the information has been verified to be correct, the stock affairs agent will fill out the sign-in-card for attendance and send it back to the proxy agent for collection, which will be used by the proxy agent to attend the Annual Shareholders’ Meeting. Shareholders, solicitors, proxy agents, and designated representatives should bring original photo ID documents for verification when attending the Annual Shareholders’ Meeting; if a juristic person appoints a representative for attendance, an appointment letter affixed with the corporate’s seal is also required.
For the Proxies solicitation, the Company will prepare a compiled list of the soliciting information of solicitors by May 22, 2026, and disclose it on the website of Securities & Futures
5 -

Institute (https://free.sfi.org.tw). Investors may enter the URL directly to access the system of "Free Inquiry System for Announced Information Concerning Proxies", and set the search criteria to inquire about the information.

In this Annual Shareholders' Meeting, shareholders may exercise their voting rights by electronic means. The period for electronic voting is from May 25, 2026 to June 21, 2026. Please log on the "E-Service for shareholder" webpage of Taiwan Depository & Clearing Corporation and proceed to vote in accordance with the instructions provided. (URL: https://stockservices.tdcc.com.tw/evote/index.html?language=EN)
The tallying and verification institution for the proxy of the Company's Annual Shareholders' Meeting is the Stock Registration Department of President Securities Corporation.
With respect to any matters set forth in Article 172 of the Company Act which shall be itemized and whose essential contents shall be explained in the causes for convening the meeting, please visit the Market Observation Post System (MOPS) at https://emops.twse.com.tw/server-java/t58query, and the inquiry path is as follows: Please click on Electronic Books / Shareholders' meetings, enter the company code "3711" and the year "2026", then select "Meeting Handbook" to inquire.
This is for your information. Please act accordingly.

To:
Shareholder

Sincerely,
ASE Technology Holding Co., Ltd. Board of Directors

Meeting Agenda

Meeting Procedure ... 1
Meeting Agenda ... 2
Status Report ... 3
Matters for Ratification ... 4
Extempore Motions ... 5

Attachments:

2025 Business Report ... 6
Audit Committee’s Audit Report ... 10
2025 Independent Auditor’s Report and Financial Statements ... 11

Appendices:

The Company’s Rules of Procedures for Shareholders’ Meeting ... 37
The Company’s Articles of Incorporation ... 40
Shareholdings of All Directors of the Company ... 45
Effect upon Business Performance, EPS and Shareholders’ ROI of any stock dividend distribution proposed or adopted ... 45

ASE Technology Holding Co., Ltd.

2026 Annual Shareholders’ Meeting Procedure

I. Meeting called to order (To announce respective number of shares held by shareholders present)
II. Chairperson's remarks
III. Status Report
IV. Matters for Ratification
V. Extempore Motions
VI. Meeting Ends

ASE Technology Holding Co., Ltd.
2026 Annual Shareholders’ Meeting Agenda

A. Meeting Type : Physical Shareholders' Meeting
B. Time: 10:00a.m., Wednesday, June 24, 2026
C. Venue: Zhuangjing Auditorium, No. 600-4, Jiachang Rd., Nanzi District, Kaohsiung City
D. Attendees: All shareholders or their proxy holders
E. Chairperson's Remarks
F. Status Report
(1) 2025 Business Report
(2) Report by Audit Committee on review of the 2025 Annual Accounting Final Reports and Statements
(3) Report on the 2025 distribution of employee compensation (including grassroots employees) and director remuneration
(4) Report on the 2025 earnings distribution of cash dividend
G. Matters for Ratification
Case 1: Ratification of 2025 Business Report and Financial Statements
Case 2: Ratification of 2025 earnings distribution proposal
H. Extempore Motions
I. Meeting Ends

Status Report

(1) The Company’s 2025 Business Report. (proposed by the Board of Directors)

Explanation: Please refer to Attachment 1 for the 2025 Business Report attached to this handbook.

(2) Report by Audit Committee on review of the 2025 Annual Accounting Final Reports and Statements. (proposed by the Board of Directors)

Explanation: Please refer to Attachment 2 for the Audit Committees’ Audit Report attached to this handbook.

(3) The Company’s report on the 2025 distribution of employee compensation (including grassroots employees) and director remuneration. (proposed by the Board of Directors)

Explanation:
1. Pursuant to the Company's Articles of Incorporation, if the Company is profitable, 0.01% (inclusive) to 1% (inclusive) of the profits shall be allocated as compensation to employees (provided 0.01% to 0.05% shall be allocated as compensation to grassroots employees) and 0.75% (inclusive) or less of the profits should be allocated as compensation to directors. While the Company has accumulated losses, the profit shall be set aside to compensate losses before distribution.

Pursuant to the Company's Articles of Incorporation, the Board of Directors has resolved the distribution of 2025 employee compensation (including grassroots employees) and director remuneration on March 27, 2026, to the effect that: NT$ 101,339,490 is to be distributed as employee compensation (an allocation ratio of approximately 0.25%), which includes NT$ 8,107,050 for grassroots employees (an allocation ratio of approximately 0.02%), and NT$ 96,000,000 is to be distributed as director remuneration (an allocation ratio of approximately 0.24%). All the aforementioned employee compensation and director remuneration will be distributed in cash.
As the Company has fewer full-time employees (employees that do not serve concurrently in subsidiaries), the total employee compensation distributed is generally equivalent to total director remuneration distributed.

(4) The Company’s report on the 2025 earnings distribution of cash dividend. (proposed by the Board of Directors)

Explanation:
1. The Board of Directors of the Company has resolved the earnings distribution on March 27, 2026, and a total of NT$ 29,437,997,041 shall be distributed as shareholders’ dividend, i.e., NT$ 6.6 per share, all of which will be distributed in cash. The Chairman of the Board will be authorized to set the record date and the distribution date of the cash dividend distribution.

The above distribution of dividends to shareholders and the dividend rates are calculated based on the number of shares recorded in the Register of Shareholders as of March 18, 2026 (4,460,302,582 Shares). If at a later date new shares are issued to employees because of exercises of Employee Stock Option, or the Company's convertible bond holders exercise their right of conversion, or new shares are issued by the Company for cash capital increase, or issuance or reclaim of restricted stock awards of the Company, or there is a buyback of the Company's stock, or transfer or cancellation of the Company's treasury stock, for the facts that will affect the dividend rate of the shareholders and thus adjustments are required, it is proposed to authorize the Chairman of the Board to handle the situation in his sole discretion and make adjustments accordingly.
3 -

Matters for Ratification

Case 1 (proposed by the Board of Directors)

Proposal : Please ratify the Company's 2025 Business Report and Financial Statements.

Explanation : 1. The Company's 2025 Financial Statements have been audited and certified by Deloitte & Touche.
2. Please ratify the 2025 Business Report (Please refer to Attachment 1 to this handbook for further details) and Financial Statements (Please refer to Attachment 3 to this handbook for further details).

Resolution :

Case 2 (proposed by the Board of Directors)

Proposal : Please ratify the Company's proposal for distribution of 2025 earnings.

Explanation : 1. The Board of Directors has drafted the Company's proposal for distribution of 2025 earnings as shown in the table below in accordance with the Company's Articles of Incorporation, for your ratification.

ASE Technology Holding Co., Ltd.
2025 Earnings Distribution Statement
Unit: NT$

Item	Amount
Undistributed earnings carried over from the previous year	72,657,790,154
Add: Current year net profit after tax	40,658,195,815
Subtract: Adjustment for actuarial gains and losses	(997,790,489)
Subtract: Adjustment for disposal of financial instruments	(15,484,126)
The net profit after tax of current period plus the amount of items other than the net profit after tax of current period but included in the undistributed earnings of the current year	39,644,921,200
Subtract: Provision for legal reserve	(3,964,492,120)
Current year earnings to be distributed	108,338,219,234
Items for distribution:
Dividends (Cash dividend is NT$ 6.6 per share) (Note 1 and Note 4)	(29,437,997,041)
Current year undistributed earnings	78,900,222,193

Chairman: Jason C.S. Chang
GM: Richard H.P. Chang
Chief Accounting Officer: Murphy Kuo

Note 1: The above distribution of dividends to shareholders and the dividend rates are calculated based on the number of shares recorded in the Register of Shareholders as of March 18, 2026 (4,460,302,582 Shares)

Note 2: Cash dividends of this year will be calculated to the nearest dollar according to distribution ratio, and amount less than one dollar will be rounded down. The aggregated amount of the fractional amounts which are less than one dollar will be recorded as shareholder's equity.

Note 3: The earnings of the most recent year will be distributed with priority at this time.

Note 4: The distribution of the cash dividend is resolved by the Board of Directors in accordance with the Articles of Incorporation of the Company and reports to Annual Shareholders’ Meeting.

Resolution :

Extempore Motions

Meeting Ends

Attachment 1

ASE Technology Holding Co., Ltd.

Business Report

Despite multiple uncertainties such as geopolitics, the impact of U.S. tariffs, and trade barriers, the international economy showed strong resilience and grew gradually in 2025. Fortunately, the investment wave brought forth by the rapid development of artificial intelligence (AI) will inject strong growth momentum into the semiconductor industry in the coming years. Faced with the major trend of AI and many uncertainties, we must not only actively demonstrate our high competitiveness and play a leading role in the global market, but also carefully consider the balance between supply chain efficiency, the economy, and geopolitics, sustainability, as well as the complexities of regional diversification, scale, and regulation. These are all important objectives for us. Looking ahead to 2026, it will be a very promising year.

According to the International Monetary Fund (IMF) forecast in January 2026, the global economic growth rate for 2026 and 2027 is expected to be 3.3% and 3.2%, with an estimated overall inflation rate of 3.8% for 2026. In addition, according to the statistics of the Industrial Technology Research Institute- Industry, Science and Technology International Strategy Center, Taiwan's IC packaging and testing industry output value in 2025 was approximately NT$711.1 billion, a 14.0% increase from 2024. The packaging industry output value was about NT$482.5 billion, a 14.0% increase from 2024, while the testing industry output value was about NT$228.6 billion, a 14.0% increase from 2024. Below is the report on the operational status of the Company and its subsidiaries (collectively referred to as "the Group") over the past year:

2025 Business Results

Implementation Results of the 2025 Business Plan

The Group's consolidated revenue for 2025 was approximately NT$645.4 billion (including NT$380.2 billion from the semiconductor packaging and testing business, NT$257.2 billion from electronic manufacturing services, and NT$8.0 billion from other businesses), an increase of NT$50.0 billion from 2024, representing an 8.4% annual growth. The semiconductor packaging and testing business's consolidated revenue for 2025 increased by NT$63.9 billion from 2024, representing a 20.2% annual growth. The electronic manufacturing services' consolidated revenue for 2025 declined by NT$14.1 billion from 2024, representing a 5.2% annual decline. Overall revenue performance showed significant growth compared to 2024 across all segments, except for a slight decline in electronic manufacturing services due to a shift in market focus.

Budget Execution

The Company did not disclose its financial forecasts in 2025.

Financial Analysis

As shown in the consolidated financial statements for 2025, the Company's paid-in capital for 2025 was approximately NT$44.5 billion, with total equity attributable to the Company's owners amounting to approximately NT$346.9 billion, accounting for 39.0% of total assets of NT$889.3 billion. The ratio of long-term funds to property, plant, and equipment was 153.2%, the current ratio was 128.4%, and the return on assets was 5.9%. Additionally, the consolidated gross profit margin for 2025 was 17.7%, a slight increase from 16.3% in 2024. The operating profit was approximately NT$50.8 billion, an increase of NT$11.6 billion from 2024,

representing a significant increase of 29.6%. The pre-tax profit was approximately NT$51.3 billion, an increase of NT$9.6 billion from the previous year, representing a significant increase of 23.1%. The comprehensive income attributable to the Company's owners was approximately NT$37.9 billion, a 16.4% decline from the previous year. The main reason for the significant decrease in comprehensive income was translation differences in the financial statements of overseas operating entities caused by exchange rate fluctuations between the U.S. dollar and the New Taiwan dollar at year-end. Capital expenditure on machinery and equipment was NT$106.7 billion (approximately US$3.4 billion) in 2025, while capital expenditure on plant, facilities, and automation reached NT$65.9 billion (approximately US$2.1 billion). Overall, the financial structure was more robust and optimized compared to 2024.

*The exchange rate between the U.S. dollar and the New Taiwan dollar is calculated based on statistics published by the U.S. Federal Reserve as of December 31, 2025, at a rate of 1:31.37, and the same rate applies below.

4. Research and Development

The global semiconductor industry has gradually entered a phase of structural growth driven by artificial intelligence (AI), high-performance computing (HPC), cloud data centers, and advanced computing applications. Advanced packaging, heterogeneous integration, and advanced testing will be key processes affecting chip performance, power consumption, bandwidth, and system reliability. Market demand is gradually shifting from single-chip solutions to system-level integration, further driving the demand for high-value-added packaging and testing services. As market demand evolves and industry entry barriers continue to rise, leading companies with deep technical expertise, mass-production capabilities, and global operational scale are expected to maintain favorable competitive positions. The Company will continue to strengthen its core competencies, prudently address industry uncertainties, and remain committed to creating sustainable long-term value for customers, shareholders, and the broader semiconductor ecosystem. In 2025, the Company successfully developed key products and technologies categorized as follows:

Flip Chip Packaging (FCP): CoCoS (Chip on Chip on SBT) 2nd bonding tech. development
Wire-Bond Packaging: AOI integrated with high efficiency anomaly detection AI technology for complex wirebonding inspection
SiP Packaging: Development of HDI AiP device via DSM (Double Side Molding) with 3D DRA (Dielectric Resonator Antenna), 3D SiP thermal dissipation technology with high density copper pin packaging, 3D SiP - Double-side molding packaging with PMU SiP thermal dissipation technology, Fan Out fine-pitch vertical wire I/O interconnect miniaturized packaging technology

2026 Business Plan Overview

1. Group Management Policy

Provide customers with "top-quality" services.
Create long-term and stable profits for the Company and customers.
Collaborate with partners to achieve mutual success.
Train employees to become professional elites in various fields.
Treat all employees "fairly and reasonably."
Provide employees with a "harmonious, pleasant, and open" work environment.
Maintain flexibility in operations as much as possible.

8 -
Expected Sales Volume and Basis

Based on industry conditions, future market demand, and the Group's production capacity, the Group's expected sales volume for 2026 is as follows:

Sales Items	Estimated Sales Volume
Packaging	Approximately 36.8 billion units
Testing	Approximately 6.1 billion units

*The estimated sales volume is based on current market demand and does not constitute a guarantee of future performance.

Important Production and Sales Policies

Looking back at 2025, the Company's growth in its packaging and testing business mainly came from advanced packaging services and testing services. Revenue from advanced packaging services grew from NT$18.8 billion (approximately US$600 million) in 2024 to NT$50.2 billion (approximately US$1.6 billion) in 2025, and the revenue share of the packaging and testing business also increased from 6% to 13%. Looking ahead to 2026 and beyond, revenue will continue to grow, driven by the widespread adoption of advanced solutions and AI, as well as overall semiconductor demand resulting from the recovery of the semiconductor market. Advanced packaging and testing revenue is expected to double from the previous year, with 75% of the revenue coming from packaging and 25% from testing. In light of the current growth trend and to prepare for growth in the coming years, we will actively make necessary investments to maintain our leading edge. The Company will expand investment in R&D, human capital, advanced production capacity, and smart factories. Capital expenditure and R&D expenses will be much higher than last year and are expected to remain at a high level next year. Based on the Company's sound financial structure and efficient funding sources, our expanded investments in the past two years have resulted in a significant improvement in both shareholders' equity and the rate of return on invested capital. We believe these investments are valuable.

Group Future Development Strategy

Looking ahead to the next few years, driven by large-scale cloud service providers and data center construction, the AI server cycle will continue to grow. With the advancement of edge applications, the development of physical-layer infrastructure is also accelerating, including robots, drones, and automation equipment. Furthermore, Taiwan's industry cluster and the Company undoubtedly hold a leading position in the entire semiconductor industry chain. System optimization is a key driver of AI development, and Taiwan has the most complete supply chain in this field, along with competitive efficiency in infrastructure development and resource planning. In a rapidly changing market, customers will choose to partner with leading supply chains to ensure a competitive edge. At the same time, the Company will also strive to establish overseas production bases to seize future opportunities for physical AI applications in order to cater to the global business layout of our customers. We will continue to expand our presence in Malaysia, South Korea, and the Philippines, with Penang in Malaysia serving as a key node of high strategic value in our global supply chain for AI robotics and automotive electronics. Semiconductors drive AI, and AI in turn pushes the limits of semiconductors. AI is no longer a mere economic issue; it also affects national security and the future development of humanity, elevating the importance of semiconductors to an unprecedented level and making industrial development even

more complex. The entire industry needs greater flexibility and intelligence to remain responsive.

Impact of External Competitive Environment, Regulatory Environment, and Overall Operating Environment

In the face of the current global business environment, the semiconductor industry has entered an irreversible new era driven by the AI wave. However, geopolitical tensions and tariff policy uncertainties still pose challenges to the supply chain. Regarding tariff policies, we must uphold an attitude of respect and compliance. Taiwan's semiconductor industry will remain highly competitive as long as the differences in tariffs between countries are not too great. The core of global semiconductor cooperation has always been founded on the three principles of trust, mutual benefit, and the belief in creating the greatest value for humanity. The Company will continue to strengthen its global presence and actively invest in innovation and sustainability to ensure long-term value creation for shareholders in complex environments. At the same time, the Company has been selected as a constituent of the Dow Jones Sustainability World Index and the Dow Jones Sustainability Emerging Markets Index for 10 consecutive years, and is also the first company in Taiwan to receive a Leadership rating in the Climate Change Assessment from the Carbon Disclosure Project (CDP) for nine consecutive years. Furthermore, in 2025, we partnered with affiliated companies, supply chain partners, and stakeholders across Taiwan to conduct simultaneous beach and ocean cleanups, contributing our efforts to ecological conservation. We hope to instill the concept of "protecting the marine environment and ensuring sustainable hope" in the hearts of our employees and supply chain partners, and further internalize it into our corporate culture, so that we can take action together to safeguard the planet and preserve a blue future for the next generation.

Chairman: Jason C.S. Chang

GM: Richard H.P. Chang

Chief Accounting Officer: Murphy Kuo

Attachment 2

Audit Committee’s Audit Report

The Board of Directors has prepared and submitted the Company’s 2025 Business Report, Financial Statements, and Earning Distribution Proposal, of which Deloitte & Touche have audited the Financial Statements, and a report has been issued. The Audit Committee has reviewed each of the aforementioned documents, and have not found any inaccuracies. Therefore, the Audit Committee hereby respectfully submits this report for review and approval in compliance with Article 14-4 of the Securities and Exchange Act and Article 219 of the Company Act.

ASE Technology Holding Co., Ltd.

Audit Committee convener:

Shen-Fu Yu

March 27, 2026

Attachment 3

ASE Technology Holding Co., Ltd. and Subsidiaries

Consolidated Financial Statements for the Years Ended December 31, 2025 and 2024 and Independent Auditors' Report

11 -

Deloitte.

勤業眾信

勤業眾信聯合會計師事務所

110421 台北市信義區松仁路100號20樓

Deloitte & Touche

20F, Taipei Nan Shan Plaza

No. 100, Songren Rd.,

Xinyi Dist., Taipei 110421, Taiwan

Tel: +886 (2) 2725-9988

Fax: +886 (2) 4051-6888

www.deloitte.com.tw

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of ASE Technology Holding Co., Ltd.

Opinion on Internal Control over Financial Reporting

We have audited the internal control over financial reporting of ASE Technology Holding Co., Ltd. (a Republic of China corporation) and its subsidiaries (collectively, the "Group") as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission (COSO). In our opinion, the Group maintained, in all material respects, effective internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by COSO.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the consolidated financial statements as of and for the year ended December 31, 2025, of the Group and our report dated March 27, 2026, expressed an unqualified opinion on those consolidated financial statements.

As described in Management's Annual Report on Internal Control Over Financial Reporting, management excluded from its assessment the internal control over financial reporting at Goodcare Holdings Inc. and its subsidiaries (collectively the "GOODCARE"), and HydroTron Power Co., Ltd. (the "HydroTron"), which were acquired in 2025, and whose financial statements constituted less than 1% of net and total assets, operating revenues, and profit of the respective consolidated financial statement amounts as of and for the year ended December 31, 2025. Accordingly, our audit did not include the internal control over financial reporting at GOODCARE and HydroTron.

Basis for Opinion

The Group's management is responsible for maintaining effective internal control over financial reporting and for its assessment of the effectiveness of internal control over financial reporting, included in the accompanying Management's Annual Report on Internal Control Over Financial Reporting. Our responsibility is to express an opinion on the Group's internal control over financial reporting based on our audit. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Group in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audit in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether effective internal control over financial reporting was maintained in all material respects. Our audit included obtaining an understanding of internal control over financial reporting, assessing the risk that a material weakness exists, testing and evaluating the design and operating effectiveness of internal control based on the assessed risk, and performing such other procedures as we considered necessary in the circumstances. We believe that our audit provides a reasonable basis for our opinion.

12 -

Definition and Limitations of Internal Control over Financial Reporting

A company’s internal control over financial reporting is a process designed to provide reasonable assurance regarding the reliability of financial reporting and the preparation of financial statements for external purposes in accordance with generally accepted accounting principles. A company’s internal control over financial reporting includes those policies and procedures that (1) pertain to the maintenance of records that, in reasonable detail, accurately and fairly reflect the transactions and dispositions of the assets of the company; (2) provide reasonable assurance that transactions are recorded as necessary to permit preparation of financial statements in accordance with generally accepted accounting principles, and that receipts and expenditures of the company are being made only in accordance with authorizations of management and directors of the company; and (3) provide reasonable assurance regarding prevention or timely detection of unauthorized acquisition, use, or disposition of the company’s assets that could have a material effect on the financial statements.

Because of its inherent limitations, internal control over financial reporting may not prevent or detect misstatements. Also, projections of any evaluation of effectiveness to future periods are subject to the risk that controls may become inadequate because of changes in conditions, or that the degree of compliance with the policies or procedures may deteriorate.

Deloitte & Touche

Taipei, Taiwan
Republic of China
March 27, 2026

13 -

Deloitte.

勤業眾信

勤業眾信聯合會計師事務所

110421 台北市信義區松仁路100號20樓

Deloitte & Touche

20F, Taipei Nan Shan Plaza

No. 100, Songren Rd.,

Xinyi Dist., Taipei 110421, Taiwan

Tel: +886 (2) 2725-9988

Fax: +886 (2) 4051-6888

www.deloitte.com.tw

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

To the shareholders and the Board of Directors of ASE Technology Holding Co., Ltd.

Opinion on the Consolidated Financial Statements

We have audited the accompanying consolidated balance sheets of ASE Technology Holding Co., Ltd. (a Republic of China corporation) and its subsidiaries (collectively, the "Group") as of December 31, 2024 and 2025, the related consolidated statements of comprehensive income, changes in equity and cash flows for each of the three years in the period ended December 31, 2025, and the related notes (collectively referred to as the "consolidated financial statements") (all expressed in New Taiwan Dollars). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Group as of December 31, 2024 and 2025, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2025, in conformity with IFRS Accounting Standards as issued by the International Accounting Standards Board (IASB).

Our audits also comprehended the translation of New Taiwan dollar amounts into U.S. dollar amounts and, in our opinion, such translation has been made in conformity with the basis stated in Note 4 to the consolidated financial statements. Such U.S. dollar amounts are presented solely for the convenience of the readers outside the Republic of China.

We have also audited, in accordance with the standards of the Public Company Accounting Oversight Board (United States) (PCAOB), the Group's internal control over financial reporting as of December 31, 2025, based on criteria established in Internal Control - Integrated Framework (2013) issued by the Committee of Sponsoring Organizations of the Treadway Commission and our report dated March 27, 2026, expressed an unqualified opinion on the Group's internal control over financial reporting.

Basis for Opinion

These consolidated financial statements are the responsibility of the Group's management. Our responsibility is to express an opinion on the Group's consolidated financial statements based on our audits. We are a public accounting firm registered with the PCAOB and are required to be independent with respect to the Group in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud. Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

14 -

15 -

Critical Audit Matter

The critical audit matter communicated below is a matter arising from the current-period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (1) relates to accounts or disclosures that are material to the consolidated financial statements and (2) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Goodwill – Allocated to the Packaging and Testing Segments for Impairment - Refer to Notes 4, 5 and 18 to the consolidated financial statements

Critical Audit Matter Description

The Group’s evaluation of goodwill for impairment involves the estimates of the value in use of each segment. The Group used the discounted cash flow model to estimate value in use, which required management to make significant estimates and assumptions related to discount rates and forecasts of future revenues. Changes in these estimates and assumptions could have a significant impact on either the value in use, the amount of any goodwill impairment charge, or both. The goodwill balance was NT$52,541,905 thousand (US$1,674,909 thousand) as of December 31, 2025, of which NT$35,430,752 thousand (US$1,129,447 thousand) and NT$13,440,470 thousand (US$428,450 thousand) were allocated to the packaging and testing segments, respectively. The value in use of the packaging and testing segments exceeded their carrying values as of the measurement date and, therefore, no impairment was recognized.

We identified the valuation of goodwill for the Group’s packaging and testing segments as a critical audit matter due to the significant estimates and assumptions management makes to estimate the value in use of the packaging and testing segments and the sensitivity of their operations to changes in demand. Auditing management’s judgments related to the selection of the discount rates and forecasts of future revenues for the packaging and testing segments required a high degree of auditor’s judgment and an increased extent of effort, including the need to involve our valuation specialists.

How the Critical Audit Matter Was Addressed in the Audit

Our audit procedures related to the discount rates and forecasts of future revenues used by management to estimate the value in use of the packaging and testing segments included the following, among others:

We tested the design and operating effectiveness of controls over management’s evaluation of goodwill allocated to the packaging and testing segments for impairment, including those over the determination of the value in use of the packaging and testing segments, such as controls related to management’s selection of the discount rates and assessment on the reasonableness of forecasts of future revenues.
We evaluated management’s ability to accurately forecast future revenues of the packaging and testing segments by comparing their actual results to management’s historical forecasts.
We performed sensitivity analyses to evaluate the risk of impairment if key assumptions were changed.

With the assistance of our valuation specialists, we evaluated the reasonableness of the discount rates by performing certain procedures, including:
Testing the source information underlying the determination of the discount rates and the mathematical accuracy of the calculation.
Developing a range of independent estimates and comparing those to the discount rates selected by management.

Deloitte & Touche

Taipei, Taiwan
Republic of China
March 27, 2026

We have served as the Group’s auditor since 1984.

16 -

Deloitte.

勤業眾信

勤業眾信聯合會針師事務所

110421 台北市信義區松仁路100號20樓

Deloitte & Touche

20F, Taipei Nan Shan Plaza

No. 100, Songren Rd.,

Xinyi Dist., Taipei 110421, Taiwan

Tel: +886 (2) 2725-9988

Fax: +886 (2) 4051-6888

www.deloitte.com.tw

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in Registration Statement Nos. 333-281564, 333-275191 and 333-229860 on Form S-8 of our reports dated March 27, 2026, relating to the consolidated financial statements of ASE Technology Holding Co., Ltd. and its subsidiaries (the "Group") the effectiveness of the Group's internal control over financial reporting, appearing in this Annual Report on Form 20-F for the year ended December 31, 2025.

Deloitte & Touche

Taipei, Taiwan

Republic of China

April 1, 2026

17 -

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(Amounts in Thousands)

	December 31, 2024	December 31, 2025
ASSETS	NT$	NT$	US$
CURRENT ASSETS
Cash and cash equivalents	$ 76,492,824	$ 92,468,851	$ 2,947,684
Financial assets at fair value through profit or loss - current	8,390,606	7,754,182	247,185
Contract assets - current	5,640,317	7,568,112	241,253
Trade receivables, net	113,419,820	125,042,214	3,986,044
Other receivables	2,895,495	2,499,294	79,672
Current tax assets	731,828	884,793	28,205
Inventories	57,313,938	65,672,973	2,093,496
Inventories related to real estate business	3,866,994	3,710,017	118,266
Other financial assets - current	985,925	1,760,287	56,114
Other current assets	5,547,339	6,434,369	205,112
Total current assets	275,285,086	313,795,092	10,003,031
NON-CURRENT ASSETS
Financial assets at fair value through profit or loss - non-current	2,441,436	2,433,310	77,568
Financial assets at fair value through other comprehensive income - non-current	13,959,493	13,615,254	434,022
Investments accounted for using the equity method	20,423,340	25,030,827	797,922
Property, plant and equipment	421,115,044	312,531,471	13,424,133
Right-of-use assets	11,851,087	12,636,536	402,822
Investment properties	20,055,044	18,736,891	597,287
Goodwill	52,525,342	52,541,905	1,674,909
Other intangible assets	15,692,350	12,920,602	411,878
Deferred tax assets	7,175,371	7,698,208	245,400
Other financial assets - non-current	4,691,997	4,108,146	130,958
Other non-current assets	4,428,052	4,867,943	155,178
Total non-current assets	574,358,556	467,121,093	18,352,077
TOTAL	$ 849,643,642	$ 780,916,185	$ 28,355,108

(Continued)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS
(Amounts in Thousands)

	December 31, 2024	December 31, 2025
LIABILITIES AND EQUITY	NT$	NT$	US$
CURRENT LIABILITIES
Short-term borrowings	$ 34,988,758	$ 31,825,453	$ 1,014,519
Short-term bills payable	-	2,220,419	70,782
Financial liabilities at fair value through profit or loss - current	324,278	966,484	30,809
Financial liabilities for hedging - current	12,456,104	9,282,400	295,901
Trade payables	78,221,100	88,753,993	2,829,263
Other payables	63,179,235	74,816,290	2,384,963
Current tax liabilities	8,888,506	11,593,551	369,574
Lease liabilities - current	986,489	969,441	30,903
Current portion of bonds payable	14,997,976	3,499,748	111,564
Current portion of long-term borrowings	3,884,906	3,188,061	101,628
Other current liabilities	16,496,364	21,363,305	681,011
Total current liabilities	234,423,716	248,479,145	7,920,917
NON-CURRENT LIABILITIES
Financial liabilities at fair value through profit loss - non-current	508,591	428,884	13,672
Bonds payable	17,978,188	11,467,882	365,568
Long-term borrowings	121,750,192	202,612,796	6,458,808
Current tax liabilities - non-current	-	2,702,639	86,154
Deferred tax liabilities	6,850,104	5,391,021	171,853
Lease liabilities - non-current	6,825,534	7,878,666	251,153
Net defined benefit liabilities	3,396,161	4,324,806	137,864
Other non-current liabilities	7,056,670	37,584,819	1,198,113
Total non-current liabilities	164,365,440	272,391,513	8,683,185
Total liabilities	398,789,156	520,870,658	16,604,102
EQUITY ATTRIBUTABLE TO OWNERS OF THE COMPANY
Share capital
Ordinary shares	44,120,643	44,361,420	1,414,135
Shares subscribed in advance	31,862	118,348	3,773
Total share capital	44,152,505	44,479,768	1,417,908
Capital surplus	148,717,262	156,301,716	4,982,522
Retained earnings
Legal reserve	21,817,390	25,076,564	799,380
Special reserve	2,791,960	2,791,960	89,001
Unappropriated earnings	96,640,231	108,963,166	3,473,483
Total retained earnings	121,249,581	136,831,690	4,361,864
Other equity	7,866,011	6,527,885	208,093
Treasury shares	(1,959,107)	(1,959,107)	(62,452)
Equity attributable to owners of the	320,026,252	342,181,952	10,907,935
NON-CONTROLLING INTERESTS	22,244,661	26,447,148	843,071
Total equity	342,270,913	368,629,100	11,751,006
TOTAL	$ 741,060,069	$ 889,499,758	$ 28,355,108

The accompanying notes are an integral part of the consolidated financial statements. (Concluded)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(Amounts in Thousands Except Earnings Per Share)

	For the Year Ended December 31
	2023	2024	2025
	NT$	NT$	NT$	US$
OPERATING REVENUES	$ 581,914,471	$ 595,409,585	$ 645,387,710	$ 20,573,405
OPERATING COSTS	490,157,339	498,477,841	531,194,836	16,933,211
GROSS PROFIT	91,757,132	96,931,744	114,192,874	3,640,194
OPERATING EXPENSES
Selling and marketing expenses	6,569,478	7,467,844	7,404,893	236,050
General and administrative expenses	19,360,539	21,467,202	23,180,987	738,954
Research and development expenses	25,499,408	28,830,313	32,851,461	1,047,226
Total operating expenses	51,429,425	57,765,359	63,437,341	2,022,230
OTHER OPERATING INCOME AND EXPENSES, NET	1,321,770	1,172,592	665,293	21,208
PROFIT FROM OPERATIONS	41,649,477	40,338,977	51,420,826	1,639,172
NON-OPERATING INCOME AND EXPENSES
Other income	2,709,694	2,924,734	2,797,487	89,177
Other gains and losses	3,444,138	4,349,992	3,772,062	120,244
Finance costs	(6,272,086)	(6,777,032)	(7,503,269)	(239,186)
Share of the profit or loss of and joint ventures	1,080,600	896,702	815,990	26,012
Total non-operating income and expenses	962,346	1,394,396	(117,730)	(3,753)
PROFIT BEFORE INCOME TAX	42,611,823	41,733,373	51,303,096	1,635,419
INCOME TAX EXPENSE	5,303,963	7,916,463	10,106,656	322,176
PROFIT FOR THE YEAR	37,307,860	33,816,910	41,196,440	1,313,243
OTHER COMPREHENSIVE INCOME (LOSS)
Items that will not be reclassified subsequently to profit or loss:
Remeasurement of defined benefit obligation	(66,384)	234,388	(1,238,644)	(39,485)
Unrealized gain (loss) on equity instruments at fair value through other comprehensive income	211,468	10,016	(232,486)	(7,411)
Share of other comprehensive of associates and joint ventures	2,468,244	160,374	4,358,100	138,926
Income tax relating to items that will not be reclassified subsequently to profit or loss	(264,618)	(84,472)	(133,120)	(4,244)
	2,348,710	320,306	2,753,850	87,786

(Continued)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
(Amounts in Thousands Except Earnings Per Share)

	For the Year Ended December 31
	2023	2024	2025
	NT$	NT$	NT$	US$
Items that may be reclassified subsequently to profit or loss:
Exchange differences on translating foreign operations	$ (1,536,221)	$ 12,788,423	$ (5,275,665)	$ (168,175)
Unrealized loss on debt investments at fair value through other comprehensive income	(16,807)	(17,145)	(17,620)	(562)
Gain (loss) on hedging instruments	(312,029)	562,598	(1,117,589)	(35,626)
Share of other comprehensive (loss) of associates and joint	(28,511)	(18,192)	37,442	1,194
Income tax related to items that may be reclassified subsequently to profit or loss	(5,792)	2,315	2,379	76
	(1,899,360)	13,317,999	(6,371,053)	(203,093)
Other comprehensive income for the year, net of income tax	449,350	13,638,305	(3,617,203)	(115,307)
TOTAL COMPREHENSIVE INCOME FOR THE YEAR	$ 37,757,210	$ 47,455,215	$ 37,579,237	$ 1,197,936
NET PROFIT ATTRIBUTABLE TO:
Owners of the Company	$ 35,457,908	$ 32,378,936	$ 40,015,755	$ 1,275,606
Non-controlling interests	1,849,952	1,437,974	1,180,685	37,637
	$ 37,307,860	$ 33,816,910	$ 41,196,440	$ 1,313,243
TOTAL COMPREHENSIVE INCOME ATTRIBUTABLE TO:
Owners of the Company	$ 36,020,578	$ 45,203,116	$ 36,688,214	$ 1,169,532
Non-controlling interests	1,736,632	2,252,099	891,023	28,404
	$ 37,757,210	$ 47,455,215	$ 37,579,237	$ 1,197,936
EARNINGS PER SHARE
Basic	$ 8.25	$ 7.50	$ 9.22	$ 0.29
Diluted	$ 8.04	$ 7.20	$ 8.75	$ 0.28
EARNINGS PER AMERICAN DEPOSITARY SHARE (“ADS”)
Basic	$ 16.51	$ 14.99	$ 18.44	$ 0.59
Diluted	$ 16.08	$ 14.40	$ 17.49	$ 0.56

The accompanying notes are an integral part of the consolidated financial statements. (Concluded)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Amounts in Thousands)

	Equity Attributable to Owners of the Company
	Share Capital		Capital Surplus	Retained Earnings				Exchange Differences on Translating Foreign Operations	Unrealized Gain (Loss) on Assets at Fair Through Other Comprehensive Income	Gain (Loss) on Hedging Instrument	Unearned Employee Benefit	Equity Directly Associated with Disposal Held for Sale	Total	Treasury Shares	Total	Non-Interests	Total Equity
	Shares (In Thousands)	Amounts		Legal Reserve	Special Reserve	Unappropriated Earnings	Total
BALANCE AT JANUARY 1, 2023	4,367,984	$ 43,679,841	$ 142,607,490	$ 12,582,960	$ 10,367,052	$ 91,556,474	$ 114,506,486	$(5,529,388)	$ 1,275,505	$ 520,281	$(432,847)	$ -	$(4,166,449)	$(1,959,107)	$ 294,668,261	$ 18,608,124	$ 313,276,385
Appropriation of 2022 earnings
Legal reserve				6,001,564		(6,001,564)
Special reserve					(6,845,501)	6,845,501
Cash dividends distributed by the Company						(38,482,083)	(38,482,083)								(38,482,083)		(38,482,083)
				6,001,564	(6,845,501)	(37,638,146)	(38,482,083)								(38,482,083)		(38,482,083)
Reversal of special reserve appropriated at the first-time adoption of IFRS Accounting Standards					(561,978)	561,978
Change from investments in associates accounted for using the equity method			3,255												3,255		3,255
Other changes in the capital surplus			87												87		87
Net profit for the year ended December 31, 2023						35,457,908	35,457,908								35,457,908	1,849,952	37,307,860
Other comprehensive income (loss) for the year ended December 31, 2023, net of income tax						(32,134)	(32,134)	(1,505,241)	2,347,561	(242,840)		(4,676)	594,804		562,670	(113,320)	449,350
Total comprehensive income (loss) for the year ended December 31, 2023						35,425,774	35,425,774	(1,505,241)	2,347,561	(242,840)		(4,676)	594,804		36,020,578	1,736,632	37,757,210
Cash dividends received by subsidiaries from the Company			641,387												641,387		641,387
Disposal of subsidiary																(295,895)	(295,895)
Differences between consideration and carrying amount arising from acquisition of subsidiaries																427,913	427,913
Share-based payment from the Company	17,466	174,657	929,634			712	712				432,847		432,847		1,537,850		1,537,850
Cash dividends distributed by subsidiaries																(912,261)	(912,261)
Share-based payment from subsidiaries			90,773												90,773	293,740	384,513
Issue of convertible bonds by subsidiaries																412,294	412,294
Disposal of investments in equity instruments at fair value through other comprehensive income						73,418	73,418			(73,418)
BALANCE AT DECEMBER 31, 2023	4,385,450	$ 43,854,498	$ 144,272,626	$ 18,584,524	$ 2,959,573	$ 89,980,210	$ 111,524,307	$(7,034,629)	$ 3,549,648	$ 277,441	$ -	$(4,676)	$(3,212,216)	$(1,959,107)	$ 294,480,108	$ 20,270,547	$ 314,750,655
BALANCE AT JANUARY 1, 2024	4,385,450	$ 43,854,498	$ 144,272,626	$ 18,584,524	$ 2,959,573	$ 89,980,210	$ 111,524,307	$(7,034,629)	$ 3,549,648	$ 277,441	$ -	$(4,676)	$(3,212,216)	$(1,959,107)	$ 294,480,108	$ 20,270,547	$ 314,750,655
Appropriation of 2023 earnings
Legal reserve					(167,613)	167,613
Special reserve						(22,838,947)	(22,838,947)								(22,838,947)		(22,838,947)
Cash dividends distributed by the Company					3,232,866	(167,613)	(25,904,200)	(22,838,947)							(22,838,947)		(22,838,947)
Change from investments in associates accounted for using the equity method			4,445												4,445		4,445
Other changes in the capital surplus			68												68		68
Net profit for the year ended December 31, 2024						32,378,936	32,378,936								32,378,936	1,437,974	33,816,910
Other comprehensive income (loss) for the year ended December 31, 2024, net of income tax						173,524	173,524	12,085,635	122,083	438,262		4,676	12,650,656		12,824,180	814,125	13,638,305
Total comprehensive income (loss) for the year ended December 31, 2024						32,552,460	32,552,460	12,085,635	122,083	438,262		4,676	12,650,656		65,203,116	2,252,099	47,455,215
Cash dividends received by subsidiaries from the Company			379,462												379,462		379,462

(Continued)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(Amounts in Thousands)

	Equity Attributable to Owners of the Company
	Share Capital		Capital Surplus	Retained Earnings				Exchange Differences on Translating Foreign Operations	Unrealized Gain (Loss) on Assets at Fair Through Other Comprehensive Income	Gain (Loss) on Hedging Instrument	Unearned Employee Benefit	Equity Directly Associated with Disposal Held for Sale	Total	Treasury Shares	Total	Non-Interests	Total Equity
	Shares (In Thousands)	Amounts		Legal Reserve	Special Reserve	Unappropriated Earnings	Total
Changes in percentage of ownership interest in subsidiaries	-	$ -	$ (250,106)	$ -	$ -	$ (5,439)	$ (5,439)	$ -	$ -	$ -	$ -	$ -	$ -	$ -	$ (255,545)	$ (201,150)	$ (456,695)
Share-based payment from the Company	29,801	298,007	4,228,820	-	-	76,028	76,028	-	-	-	(1,631,257)	-	(1,631,257)	-	2,971,598	-	2,971,598
Non-controlling interests arising from capital increase of subsidiaries	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	177,487	177,487
Cash dividends distributed by subsidiaries	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	(593,390)	(593,390)
Share-based payment from subsidiaries	-	-	81,947	-	-	-	-	-	-	-	-	-	-	-	81,947	238,183	320,130
Issue of convertible bonds by subsidiaries	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	100,885	100,885
Disposal of investments in equity instruments at fair value through other comprehensive income	-	-	-	-	-	(58,828)	(58,828)	-	58,828	-	-	-	58,828	-	-	-	-
BALANCE AT DECEMBER 31, 2024	4,415,251	$ 44,152,505	$ 148,717,262	$ 21,817,390	$ 2,791,960	$ 96,640,231	$ 121,249,581	$ 5,051,006	$ 3,730,559	$ 715,703	$(1,631,257)	$ -	$ 7,866,011	$ (1,959,107)	$ 320,026,252	$ 22,244,661	$ 342,270,915
BALANCE AT JANUARY 1, 2025	4,415,251	$ 44,152,505	$ 148,717,262	$ 21,817,390	$ 2,791,960	$ 96,640,231	$ 121,249,581	$ 5,051,006	$ 3,730,559	$ 715,703	$(1,631,257)	$ -	$ 7,866,011	$ (1,959,107)	$ 320,026,252	$ 22,244,661	$ 342,270,915
Appropriation of 2024 earnings
Legal reserve	-	-	-	3,259,174	-	(3,259,174)	-	-	-	-	-	-	-	-	(23,420,372)	-	(23,420,372)
Cash dividends distributed by the Company	-	-	-	-	-	(23,420,372)	(23,420,372)	-	-	-	-	-	-	-	(23,420,372)	-	(23,420,372)
				3,259,174		(26,679,546)	(23,420,372)	-	-	-	-	-	-	-	(23,420,372)	-	(23,420,372)
Change from investments in associates accounted for using the equity method	-	-	16,093	-	-	-	-	-	-	-	-	-	-	-	16,093	-	16,093
Other changes in the capital surplus	-	-	76	-	-	-	-	-	-	-	-	-	-	-	76	-	76
Net profit for the year ended December 31, 2025	-	-	-	-	-	40,015,755	40,015,755	-	-	-	-	-	-	-	40,015,755	1,180,685	41,196,440
Other comprehensive income (loss) for the year ended December 31, 2025, net of income tax	-	-	-	-	-	(997,790)	(997,790)	(5,189,939)	3,725,567	(865,379)	-	-	(2,329,751)	-	(3,327,541)	(289,662)	(3,617,205)
Total comprehensive income (loss) for the year ended December 31, 2025	-	-	-	-	-	39,017,965	39,017,965	(5,189,939)	3,725,567	(865,379)	-	-	(2,329,751)	-	36,688,214	891,023	37,570,237
Cash dividends received by subsidiaries from the Company	-	-	386,307	-	-	-	-	-	-	-	-	-	-	-	386,307	-	386,307
Differences between consideration and carrying amount arising from acquisition of subsidiaries	-	-	(68,093)	-	-	-	-	-	-	-	-	-	-	-	(68,093)	10,618	(57,475)
Changes in percentage of ownership interest in subsidiaries	-	-	3,169,280	-	-	-	-	-	-	-	-	-	-	-	3,169,280	2,964,788	6,134,068
Share-based payment from the Company	32,726	327,263	3,780,009	-	-	-	-	-	-	-	976,141	-	976,141	-	5,083,413	-	5,083,413
Cash dividends distributed by subsidiaries	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	(514,157)	(514,157)
Share-based payment from subsidiaries	-	-	300,782	-	-	-	-	-	-	-	-	-	-	-	300,782	578,048	878,830
Issue of convertible bonds by subsidiaries	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	272,167	272,167
Disposal of investments in equity instruments at fair value through other comprehensive income	-	-	-	-	-	(15,484)	(15,484)	-	15,484	-	-	-	15,484	-	-	-	-
BALANCE AT DECEMBER 31, 2025	4,447,977	$ 44,470,768	$ 156,301,716	$ 25,076,564	$ 2,791,960	$ 108,963,166	$ 136,831,690	$ (138,933)	$ 7,471,610	$ (149,676)	$ (655,116)	$ -	$ 6,527,885	$ (1,959,107)	$ 342,181,952	$ 26,447,148	$ 368,629,100
UX DOLLARS
BALANCE AT DECEMBER 31, 2025	4,447,977	$ 1,417,908	$ 4,982,522	$ 799,380	$ 89,001	$ 3,471,483	$ 4,361,864	$ (4,429)	$ 238,177	$ (4,771)	$ (20,884)	$ -	$ 208,093	$ (62,452)	$ 10,907,935	$ 843,071	$ 11,751,006

The accompanying notes are an integral part of the consolidated financial statements.

(Concluded)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in Thousands)

	For the Year Ended December 31
	2023	2024	2025
	NT$	NT$	NT$	US$
CASH FLOWS FROM OPERATING
Profit before income tax	$ 42,611,823	$ 41,733,373	$ 51,303,096	$ 1,635,419
Adjustments for:
Depreciation expense	54,195,380	55,995,198	63,607,075	2,027,640
Amortization expense	3,906,483	3,820,014	3,832,762	122,179
Net gain on fair value change of financial assets and liabilities at fair value through profit or loss	(1,860,511)	(9,832,900)	(340,984)	(10,870)
Finance costs	6,272,086	6,777,032	7,503,269	239,186
Interest income	(1,513,407)	(1,883,518)	(1,879,685)	(59,920)
Dividend income	(256,160)	(194,812)	(119,634)	(3,814)
Share-based compensations	742,890	2,188,600	2,481,787	79,113
Share of profit of associates and joint	(1,080,600)	(896,702)	(815,990)	(26,012)
Gain on disposal of property, plant and equipment	(161,761)	(208,980)	(809,950)	(25,819)
Gain on disposal of investments accounted for using the equity method	(55,795)	(20,952)	(15,310)	(488)
Impairment loss recognized on financial	108,443	195,455	236,942	7,553
Impairment loss recognized on non-financial assets	3,536,506	603,756	816,424	26,026
Gain on disposal of subsidiary	(529,721)	-	-	-
Gain on bargain purchase	-	(76,715)	-	-
Net loss (gain) on foreign currency	10,127	3,377,808	(2,005,284)	(63,924)
Others	34,888	(65,671)	(72,453)	(2,310)
Changes in operating assets and liabilities
Financial assets mandatorily classified as at value through profit or loss	8,453,963	7,767,363	7,875,427	251,050
Contract assets	631,097	(540,241)	(1,927,795)	(61,453)
Trade receivables	15,868,810	(14,331,791)	(11,899,300)	(379,321)
Other receivables	348,614	1,068,459	851,315	27,138
Inventories	25,401,815	1,781,135	(8,515,201)	(271,444)
Other current assets	(292,294)	(620,913)	(872,015)	(27,798)
Other financial assets	(718,946)	1,009,130	686,757	21,892
Other operating assets	92,135	181,390	(18,486)	(589)
Financial liabilities held for trading	(3,619,901)	(2,966,792)	(5,719,744)	(182,332)
Trade payables	(9,037,355)	7,694,702	10,498,543	334,668
Other payables	(8,281,769)	1,540,330	4,638,266	147,857
Other current liabilities	(877,245)	95,790	3,535,163	112,693
Other operating liabilities	(182,534)	(387,660)	31,961,760	1,018,864
Cash generated from operations	133,747,061	103,801,888	154,816,755	4,935,184
Interest received	1,479,507	1,811,676	1,801,128	57,416
Dividend received	668,883	665,916	610,201	19,452
Interest paid	(5,998,956)	(6,419,091)	(7,870,200)	(250,883)
Income tax paid	(15,474,646)	(9,072,635)	(7,108,597)	(226,605)
Net cash generated from operating activities	114,421,849	90,787,754	142,249,287	4,534,564

(Continued)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in Thousands)

	For the Year Ended December 31
	2023	2024	2025
	NT$	NT$	NT$	US$
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of financial assets at fair value other comprehensive income	$ (184,355)	$ (13,560)	$ (478,350)	$ (15,249)
Proceeds from sale of financial assets at fair through other comprehensive income	-	405	-	-
Return of capital from financial assets at fair through other comprehensive income	188,347	184,050	32,675	1,042
Acquisition of associates accounted for using equity method	(2,259,757)	(14,700)	-	-
Proceeds from disposal of investments using the equity method	489,329	-	-	-
Net proceeds outflow on acquisition of	(1,224,183)	(1,627,074)	(258,554)	(8,242)
Net proceeds from disposal of subsidiary	2,093,700	-	-	-
Payments for property, plant and equipment	(54,158,229)	(79,521,938)	(164,642,502)	(5,248,406)
Proceeds from disposal of property, plant and equipment	475,326	908,053	2,493,114	79,474
Payments for intangible assets	(395,651)	(1,567,300)	(1,017,558)	(32,437)
Proceeds from disposal of intangible assets	9,901	10,177	10,022	319
Payments for right-of-use assets	(35,851)	(593,496)	(188,303)	(6,003)
Payments for investment properties	(35,304)	(15,145)	(33,260)	(1,060)
Proceeds from disposal of investment	-	34	-	-
Increase in other financial assets	(485,132)	(1,686,349)	(2,645,136)	(84,321)
Decrease in other financial assets	226,397	1,530,701	1,120,247	35,711
Increase in other non-current assets	(294,680)	(473,350)	(511,749)	(16,313)
Decrease in other non-current assets	80,668	140,976	475,095	15,145
Income tax paid	-	(1,170,149)	-	-
Other investing activities items	387,480	-	-	-
Net cash used in investing activities	(55,121,994)	(83,908,665)	(165,644,259)	(5,280,340)
CASH FLOWS FROM FINANCING
Proceeds from short-term borrowings	3,231,840	-	-	-
Repayment of short-term borrowings	-	(4,514,729)	(5,839,428)	(186,147)
Proceeds from short-term bills payable	2,787,340	-	2,198,419	70,080
Repayment of short-term bills payable	-	(2,787,340)	-	-
Proceeds from bonds offering	2,426,634	1,035,014	4,376,855	139,524
Repayment of bonds payable	(5,000,000)	(13,902,400)	(15,000,000)	(478,164)
Proceeds from long-term borrowings	286,268,360	244,731,255	459,416,458	14,645,089
Repayment of long-term borrowings	(300,531,590)	(208,074,986)	(378,109,527)	(12,053,220)
Repayment of the principle portion of lease liabilities	(1,136,666)	(1,547,291)	(1,063,297)	(33,895)
Dividends paid	(37,840,609)	(22,459,417)	(23,033,989)	(734,268)
Proceeds from exercise of employee share	1,175,260	1,103,058	3,480,455	110,948
Decrease in non-controlling interests	(484,348)	(872,613)	(1,157,064)	(36,884)
Other financing activities items	2,740	18,243	254	8
Net cash generated from (used in) financing activities	(49,101,039)	(7,271,206)	45,269,136	1,443,071

(Continued)

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(Amounts in Thousands)

	For the Year Ended December 31
	2023	2024	2025
	NT$	NT$	NT$	US$
EFFECTS OF EXCHANGE RATE CHANGES ON THE BALANCE OF CASH AND CASH EQUIVALENTS HELD IN FOREIGN CURRENCY	$ (954,692)	$ 9,600,423	$ (5,898,137)	$ (188,018)
NET INCREASE IN CASH AND CASH EQUIVALENTS	9,244,124	9,208,306	15,976,027	509,277
CASH AND CASH EQUIVALENTS AT THE BEGINNING OF THE YEAR	58,040,394	67,284,518	76,492,824	2,438,407
CASH AND CASH EQUIVALENTS AT THE END OF THE YEAR	$ 67,284,518	$ 76,492,824	$ 92,468,851	$ 2,947,684

The accompanying notes are an integral part of the consolidated financial statements.

(Concluded)

26 -

27 -

ASE Technology Holding Co., Ltd.

Parent Company Only Financial Statements for the Years Ended December 31, 2025 and 2024 and Independent Auditors' Report

Deloitte.

勤業眾信

勤業眾信聯合會計師事務所

110016 台北市信義區松仁路100號20樓

Deloitte & Touche

20F, Taipei Nan Shan Plaza

No. 100, Songren Rd.,

Xinyi Dist., Taipei 110016, Taiwan

Tel: +886 (2) 2725-9988

Fax: +886 (2) 4051-6888

www.deloitte.com.tw

INDEPENDENT AUDITORS' REPORT

The Board of Directors and Shareholders

ASE Technology Holding Co., Ltd.

Opinion

We have audited the accompanying parent company only financial statements of ASE Technology Holding Co., Ltd. (the "Company"), which comprise the balance sheets as of December 31, 2025 and 2024, and the statements of comprehensive income, changes in equity and cash flows for the years then ended, and the notes to the parent company only financial statements, including material accounting policy information (collectively referred to as the "parent company only financial statements").

In our opinion, the accompanying parent company only financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2025 and 2024, and its financial performance and its cash flows for the years then ended in accordance with the Regulations Governing the Preparation of Financial Reports by Securities Issuers.

Basis for Opinion

We conducted our audits in accordance with the Regulations Governing Financial Statement Audit and Attestation Engagements of Certified Public Accountants and the Standards on Auditing of the Republic of China. Our responsibilities under those standards are further described in the Auditors' Responsibilities for the Audit of the Parent Company Only Financial Statements section of our report. We are independent of the Company in accordance with The Norm of Professional Ethics for Certified Public Accountant of the Republic of China, and we have fulfilled our other ethical responsibilities in accordance with these requirements. We believe that the audit evidence we have obtained is sufficient and appropriate to provide a basis for our opinion.

Key Audit Matters

Key audit matters are those matters that, in our professional judgment, were of most significance in our audit of the parent company only financial statements for the year ended December 31, 2025. These matters were addressed in the context of our audit of the parent company only financial statements as a whole, and in forming our opinion thereon, and we do not provide a separate opinion on these matters.

The key audit matter of the Company's parent company only financial statements for the year ended December 31, 2025, is discussed as follows.

Evaluation of Goodwill (Allocated to the Packaging and Testing Segments) included in Investments in Subsidiaries for Impairment

The Company's evaluation of goodwill included in investments in subsidiaries for impairment involves the estimates of the value in use of each segment, to which each subsidiary attributed. The Company used the discounted cash flow model to estimate value in use, which required management to make significant estimates and assumptions related to discount rates and forecasts of future revenues. Changes in these estimates and assumptions could have a significant impact on either the value in use, the amount of any goodwill impairment

28 -

charge, or both. The goodwill included in investments in subsidiaries was NT$51,886,100 thousand as of December 31, 2025, of which NT$34,867,397 thousand and NT$13,348,020 thousand were allocated to the packaging and testing segments, respectively. The value in use of the packaging and testing segments exceeded their carrying values as of the measurement date and, therefore, no impairment was recognized.

The operation of the packaging and testing segments is sensitive to changes in demand in the semiconductor industry which varies by economic trends. Given the significant estimates and assumptions management makes to estimate the value in use of the packaging and testing segments and the sensitivity of their operations to changes in demand, performing audit procedures to evaluate the reasonableness of management's estimates and assumptions related to the selection of the discount rates and forecasts of future revenues for the packaging and testing segments required a high degree of auditors' judgment and an increased extent of effort, including the need to involve our valuation specialists.

Please refer to Notes 4(d) and 5 for the related accounting policy, critical accounting judgements and key sources of estimation uncertainty as well as other disclosures on the Company's evaluation of goodwill included in investments in subsidiaries for impairment.

We tested the design and operating effectiveness of controls over management's evaluation of goodwill allocated to the packaging and testing segments for impairment, including those controls related to management's selection of the discount rates and assessment on the reasonableness of forecasts of future revenues when management determined the value in use of the packaging and testing segments.
We evaluated management's ability to accurately forecast future revenues of the packaging and testing segments by comparing actual results to management's historical forecasts.
We performed sensitivity analyses to evaluate the risk of impairment if key assumptions were changed.
With the assistance of our valuation specialists, we evaluated the reasonableness of the discount rates by performing certain procedures, including:
Testing the source information underlying the determination of the discount rates and the mathematical accuracy of the calculation.
Developing a range of independent estimates and comparing those to the discount rates selected by management.

Responsibilities of Management and Those Charged with Governance for the Parent Company Only Financial Statements

Management is responsible for the preparation and fair presentation of the parent company only financial statements in accordance with the Regulations Governing the Preparation of Financial Reports by Securities Issuers, and for such internal control as management determines is necessary to enable the preparation of the parent company only financial statements that are free from material misstatement, whether due to fraud or error.

In preparing the parent company only financial statements, management is responsible for assessing the Company's ability to continue as a going concern, disclosing, as applicable, matters related to going concern and using the going concern basis of accounting unless management either intends to liquidate the Company or to cease operations, or has no realistic alternative but to do so.

Those charged with governance, including the audit committee, are responsible for overseeing the Company's financial reporting process.

29 -

Auditors’ Responsibilities for the Audit of the Parent Company Only Financial Statements

Our objectives are to obtain reasonable assurance about whether the parent company only financial statements as a whole are free from material misstatement, whether due to fraud or error, and to issue an auditors’ report that includes our opinion. Reasonable assurance is a high level of assurance, but is not a guarantee that an audit conducted in accordance with the Standards on Auditing of the Republic of China will always detect a material misstatement when it exists. Misstatements can arise from fraud or error and are considered material if, individually or in the aggregate, they could reasonably be expected to influence the economic decisions of users taken on the basis of these parent company only financial statements.

As part of an audit in accordance with the Standards on Auditing of the Republic of China, we exercise professional judgment and maintain professional skepticism throughout the audit. We also:

Identify and assess the risks of material misstatement of the parent company only financial statements, whether due to fraud or error, design and perform audit procedures responsive to those risks, and obtain audit evidence that is sufficient and appropriate to provide a basis for our opinion. The risk of not detecting a material misstatement resulting from fraud is higher than for one resulting from error, as fraud may involve collusion, forgery, intentional omissions, misrepresentations, or the override of internal control.
Obtain an understanding of internal control relevant to the audit in order to design audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the Company’s internal control.
Evaluate the appropriateness of accounting policies used and the reasonableness of accounting estimates and related disclosures made by management.
Conclude on the appropriateness of management’s use of the going concern basis of accounting and, based on the audit evidence obtained, whether a material uncertainty exists related to events or conditions that may cast significant doubt on the Company’s ability to continue as a going concern. If we conclude that a material uncertainty exists, we are required to draw attention in our auditors’ report to the related disclosures in the parent company only financial statements or, if such disclosures are inadequate, to modify our opinion. Our conclusions are based on the audit evidence obtained up to the date of our auditors’ report. However, future events or conditions may cause the Company to cease to continue as a going concern.
Evaluate the overall presentation, structure and content of the parent company only financial statements, including the disclosures, and whether the parent company only financial statements represent the underlying transactions and events in a manner that achieves fair presentation.
Obtain sufficient and appropriate audit evidence regarding the financial information of entities or business activities within the Company to express an opinion on the parent company only financial statements. We are responsible for the direction, supervision, and performance of the audit. We remain solely responsible for our audit opinion.

We communicate with those charged with governance regarding, among other matters, the planned scope and timing of the audit and significant audit findings, including any significant deficiencies in internal control that we identify during our audit.

We also provide those charged with governance with a statement that we have complied with relevant ethical requirements regarding independence, and to communicate with them all relationships and other matters that may reasonably be thought to bear on our independence, and where applicable, related safeguards.

From the matters communicated with those charged with governance, we determine those matters that were of most significance in the audit of the parent company only financial statements for the year ended December 31, 2025 and are therefore the key audit matters. We describe these matters in our auditors’ report unless law or regulation precludes public disclosure about the matter or when, in extremely rare circumstances, we determine that a matter should not be communicated in our report because the adverse consequences of doing so would reasonably be expected to outweigh the public interest benefits of such communication.

30 -

The engagement partners on the audit resulting in this independent auditors’ report are Kai-Ning Hsu and Lee-Yuan Kuo.

Deloitte & Touche
Taipei, Taiwan
Republic of China

March 9, 2026

Notice to Readers

The accompanying parent company only financial statements are intended only to present the financial position, financial performance and cash flows in accordance with accounting principles and practices generally accepted in the Republic of China and not those of any other jurisdictions. The standards, procedures and practices to audit such parent company only financial statements are those generally applied in the Republic of China.

For the convenience of readers, the independent auditors’ report and the accompanying parent company only financial statements have been translated into English from the original Chinese version prepared and used in the Republic of China. If there is any conflict between the English version and the original Chinese version or any difference in the interpretation of the two versions, the Chinese version of the independent auditors’ report and parent company only financial statements shall prevail.

31 -

ASE TECHNOLOGY HOLDING CO., LTD.

PARENT COMPANY ONLY BALANCE SHEETS
DECEMBER 31, 2025 AND 2024
(In Thousands of New Taiwan Dollars)

	December 31, 2025		December 31, 2024
ASSETS	NT$	%	NT$	%
CURRENT ASSETS
Cash	$ 24,803	-	$ 34,930	-
Other receivables to related parties	352,808	-	208,439	-
Other current assets	78,331	-	42,954	-
Total current assets	455,942	-	286,323	-
NON-CURRENT ASSETS
Financial assets at fair value through other comprehensive income- non-current	150,000	-	-	-
Investments accounted for using the equity method	420,080,642	100	353,403,364	100
Other intangible assets	67,084	-	43,307	-
Other non-current assets	4,420	-	5,329	-
Total non-current assets	420,302,146	100	353,452,000	100
TOTAL	$ 420,758,088	100	$ 353,738,323	100
LIABILITIES AND EQUITY
CURRENT LIABILITIES
Short-term borrowings	$ -	-	$ 1,128,000	-
Other payables	378,966	-	345,858	-
Current tax liabilities	141,543	-	137,976	-
Current portion of bonds payable	3,499,748	1	14,997,976	5
Other current liabilities	3,886	-	3,462	-
Total current liabilities	4,024,143	1	16,613,272	5
NON-CURRENT LIABILITIES
Bonds payable	1,999,234	-	5,497,708	2
Long-term borrowings	67,831,324	16	8,100,000	2
Other non-current liabilities	3,479	-	4,331	-
Total non-current liabilities	69,834,037	16	13,602,039	4
Total liabilities	73,858,180	17	30,215,311	9
EQUITY
Share capital
Ordinary shares	44,361,420	11	44,120,643	12
Shares subscribed in advance	118,348	-	31,862	-
Total share capital	44,479,768	11	44,152,505	12
Capital surplus	156,457,170	36	148,872,716	42
Retained earnings
Legal reserve	25,076,564	6	21,817,390	6
Special reserve	2,791,960	1	2,791,960	1
Unappropriated earnings	112,302,713	27	99,337,337	28
Total retained earnings	140,171,237	34	123,946,687	35
Other equity	7,750,840	2	8,510,211	3
Treasury shares	(1,959,107)	-	(1,959,107)	(1)
Total equity	346,899,908	83	323,523,012	91
TOTAL	$ 420,758,088	100	$ 353,738,323	100

The accompanying notes are an integral part of the parent company only financial statements.

ASE TECHNOLOGY HOLDING CO., LTD.

PARENT COMPANY ONLY STATEMENTS OF COMPREHENSIVE INCOME
FOR THE YEARS ENDED DECEMBER 31, 2025 AND 2024
(In Thousands of New Taiwan Dollars Except Earnings Per Share)

	For the Year Ended December 31
	2025		2024
	NT$	%	NT$	%
OPERATING REVENUE	$ 42,298,609	100	$ 33,451,518	100
GROSS PROFIT	42,298,609	100	33,451,518	100
OPERATING EXPENSES
General and administrative expenses	1,108,263	3	884,046	3
PROFIT FROM OPERATIONS	41,190,346	97	32,567,472	97
NON-OPERATING INCOME AND EXPENSES
Other income	105,404	-	128,435	-
Other gains and losses	4,879	-	788	-
Finance costs	(964,046)	(2)	(384,920)	(1)
Total non-operating income and expenses	(853,763)	(2)	(255,697)	(1)
PROFIT BEFORE INCOME TAX	40,336,583	95	32,311,775	96
INCOME TAX BENEFITS	321,613	1	170,704	1
NET PROFIT FOR THE YEAR	40,658,196	96	32,482,479	97
OTHER COMPREHENSIVE INCOME (LOSS)
Items that will not be reclassified subsequently to profit or loss:
Share of other comprehensive income of subsidiaries and joint ventures accounted for using the equity method	3,070,256	7	403,892	1
Income tax relating to items that will not be reclassified subsequently to profit or loss	253,896	1	(64,207)	-
	3,324,152	8	339,685	1
Items that may be reclassified subsequently to profit or loss:
Share of other comprehensive income (loss) of subsidiaries and joint ventures accounted for using the equity method	(6,072,938)	(14)	12,511,427	37
Other comprehensive income for the year, net of income tax	(2,748,786)	(6)	12,851,112	38
TOTAL COMPREHENSIVE INCOME FOR THE YEAR	$ 37,909,410	90	$ 45,333,591	135
EARNINGS PER SHARE
Basic	$ 9.37		$ 7.52
Diluted	$ 8.89		$ 7.23

The accompanying notes are an integral part of the parent company only financial statements.

ASE TECHNOLOGY HOLDING CO., LTD.

PARENT COMPANY ONLY STATEMENTS OF CHANGES IN EQUITY

FOR THE YEARS ENDED DECEMBER 31, 2025 AND 2024

(In Thousands of New Taiwan Dollars)

	Share Capital		Capital Surplus	Retained Earnings				Other Equity							Treasury Shares
	Shares (In Thousands)	Amounts		Legal Reserve	Special Reserve	Unappropriated Earnings	Total	Exchange Differences Translating Foreign Operations	Unrealized Gain (Loss) on Financial Assets of Fair Value Through Other Comprehensive Income	Gain (Loss) on Hedging Instruments	Unearned Employee Benefit	Equity Directly Associated with Disposal Groups Held for Sale	Total
BALANCE AT JANUARY 1, 2024	4,385,450	$ 43,854,498	$ 146,407,128	$ 16,504,524	$ 2,959,573	$ 92,573,773	$ 114,117,870	$ (7,033,730)	$ 4,166,017	$ 277,441	$ -	$ (4,676)	$ (2,594,948)	$ (1,959,107)	$ 297,825,441
Appropriation of 2023 earnings
Legal reserve				3,232,866		(3,232,866)
Special reserve					(167,613)	167,613
Cash dividends distributed by the Company						(22,838,947)	(22,838,947)								(22,838,947)
				3,232,866	(167,613)	(25,904,200)	(22,838,947)								(22,838,947)
Changes from investments in associates accounted for using the equity method			25,397												25,397
Other changes in the capital surplus			68												68
Net profit for the year ended December 31, 2024						32,482,479	32,482,479								32,482,479
Other comprehensive income (loss) for the year ended December 31, 2024, net of income tax						173,524	173,524	12,085,635	149,015	636,262		4,676	12,677,588		12,851,112
Total comprehensive income (loss) for the year ended December 31, 2024, net of income tax						32,656,003	32,656,003	12,085,635	149,015	636,262		4,676	12,677,588		45,333,591
Cash dividends received by subsidiaries from the Company			379,462												379,462
Changes in percentage of ownership interests in subsidiaries			(250,108)			(5,439)	(5,439)								(255,545)
Share-based payment from the Company	29,801	290,007	4,228,820			76,028	76,028				(1,631,257)		(1,631,257)		2,973,598
Share-based payment from the subsidiaries arising on issue of employee share options by subsidiaries			81,947												81,947
Disposal of investments in equity instruments at fair value through other comprehensive income						(58,828)	(58,828)		58,828				58,828
BALANCE AT DECEMBER 31, 2024	4,415,251	$ 44,152,505	$ 148,872,716	$ 21,817,390	$ 2,791,960	$ 99,337,337	$ 123,946,687	$ 5,051,905	$ 4,373,880	$ 715,703	$ (1,631,257)	$ -	$ 8,510,211	$ (1,959,107)	$ 223,523,012
BALANCE AT JANUARY 1, 2025	4,415,251	$ 44,152,505	$ 148,872,716	$ 21,817,390	$ 2,791,960	$ 99,337,337	$ 123,946,687	$ 5,051,905	$ 4,373,880	$ 715,703	$ (1,631,257)	$ -	$ 8,510,211	$ (1,959,107)	$ 223,523,012
Appropriation of 2024 earnings
Legal reserve				3,259,174		(3,259,174)									(23,420,372)
Cash dividends distributed by the Company						(23,420,372)	(23,420,372)								(23,420,372)
				3,259,174		(26,679,546)	(23,420,372)								(23,420,372)
Changes from investments in associates accounted for using the equity method			16,093												16,093
Other changes in the capital surplus			76												76
Net profit for the year ended December 31, 2025						40,658,196	40,658,196								40,658,196
Other comprehensive income (loss) for the year ended December 31, 2025, net of income tax						(997,700)	(997,700)	(5,189,939)	4,304,322	(865,379)			(1,750,996)		(2,748,786)
Total comprehensive income (loss) for the year ended December 31, 2025, net of income tax						39,660,406	39,660,406	(5,189,939)	4,304,322	(865,379)			(1,750,996)		37,900,410
Cash dividends received by subsidiaries from the Company			386,307												386,307
Differences between consideration and carrying amount arising from acquisition or disposal of subsidiaries			(68,093)												(68,093)
Changes in percentage of ownership interest in subsidiaries			3,169,280												3,169,280
Share-based payment from the Company	32,726	327,263	3,700,000								976,141		976,141		3,083,413
Share-based payment from the subsidiaries arising on issue of employee share options by subsidiaries			300,782												300,782
Disposal of investments in equity instruments at fair value through other comprehensive income						(15,484)	(15,484)		15,484				15,484
BALANCE AT DECEMBER 31, 2025	4,447,977	$ 44,479,768	$ 156,457,170	$ 25,076,564	$ 2,791,960	$ 112,302,713	$ 140,171,237	$ (130,034)	$ 8,693,666	$ (1,09,676)	$ (655,116)	$ -	$ 7,750,840	$ (1,959,107)	$ 346,899,908

The accompanying notes are an integral part of the parent company only financial statements.

ASE TECHNOLOGY HOLDING CO., LTD.

PARENT COMPANY ONLY STATEMENTS OF CASH FLOWS
FOR THE YEARS ENDED DECEMBER 31, 2025 AND 2024
(In Thousands of New Taiwan Dollars)

	For the Year Ended December 31
	2025	2024
	NT$	NT$
CASH FLOWS FROM OPERATING ACTIVITIES
Profit before income tax	$ 40,336,583	$ 32,311,775
Adjustments for:
Depreciation expense	910	910
Amortization expense	11,368	8,109
Finance costs	964,046	384,920
Interest income	(1,222)	(3,209)
Share-based payment compensations	403,077	221,985
Share of profit of subsidiaries	(42,298,609)	(33,451,518)
Changes in operating assets and liabilities
Other current assets	(35,377)	48,324
Other payables	39,695	(33,872)
Other payables to related parties	-	(537)
Other current liabilities	417	184
Cash used in operations	(579,112)	(512,929)
Interest received	1,221	3,212
Dividend received	28,800,000	26,504,253
Interest paid	(959,011)	(422,407)
Income tax refund	180,811	178,022
Net cash generated from operating activities	27,443,909	25,750,151
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of financial assets at fair value through other comprehensive income	(150,000)	-
Acquisition of subsidiaries accounted for using the equity method	(50,050,000)	-
Payments for intangible assets	(35,145)	(29,484)
Increase in other non-current assets	-	(1)
Net cash used in investing activities	(50,235,145)	(29,485)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from short-term borrowings	-	1,128,000
Repayment of short-term borrowings	(1,128,000)	-
Repayment of bonds payable	(15,000,000)	(9,602,400)
Proceeds from long-term borrowings	74,974,000	18,628,000
Repayment of long-term borrowings	(15,251,000)	(11,231,000)
Decrease in other payables to related parties	-	(2,690,000)
Repayment of the principle portion of lease liabilities	(845)	(850)
Dividends paid	(23,420,296)	(22,838,879)
Proceeds from exercise of employee share options	2,607,250	876,265
Net cash used in financing activities	22,781,109	(25,730,864)
NET DECREASE IN CASH	(10,127)	(10,198)
CASH AT THE BEGINNING OF THE YEAR	34,930	45,128
CASH AT THE END OF THE YEAR	$ 24,803	$ 34,930

The accompanying notes are an integral part of the parent company only financial statements.

For the complete financial statements, please visit the ASEH website

(URL: https://www.aseglobal.com)

Click on Investor Relations ▶ Financials ▶ Stock Exchange Filings
Link https://ir.aseglobal.com/html/ir_exchange.php

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Appendix 1

ASE Technology Holding Co., Ltd.

Rules of Procedures for Shareholders’ Meeting

Article 1 Shareholders’ meetings of the ASE Technology Holding Co., Ltd. (the “Company”) shall be conducted in accordance with the Rules of Procedure for Shareholders’ Meeting (the “Rules”).

Article 2 A shareholder (or its proxy) attending a shareholders’ meeting in person shall show the attendance card and submit the signing card in lieu of signing in. The number of shares present at the meeting shall equal the aggregate number of shares held by the shareholders having submitted their signing cards, plus shares that shareholders have exercised their voting rights by way of electronic transmission.

Article 3 Each shareholder shall be entitled to one vote for each share held except for those shares prohibited from exercising voting rights in accordance with Article 179 of Taiwan Company Act or otherwise restricted under the relevant provisions of Taiwan Company Act. When a shareholder is not able to attend a shareholders’ meeting, a shareholder may appoint a proxy to attend the meeting on his behalf by executing a proxy instrument prepared by the Company stating therein the scope of proxy authorization. Except for trust enterprises or stock affairs agencies approved by the competent authority of securities, in the event a person acts as the proxy for two or more shareholders, the total number of issued and voting shares entitled to be voted as represented by such proxy shall be not more than three percent of the total number of issued and voting shares of the Company; any vote in respect of the portion in excess of such three percent threshold shall not be counted.

A shareholder may only execute one proxy instrument and appoint one proxy only, and shall serve such written proxy to the Company no later than five days prior to the date of shareholders’ meeting. In cases where the Company receives multiple proxy instruments from one shareholder, the first one arriving at the Company shall prevail unless an explicit statement to revoke the previous written proxy is made in the proxy which comes later.

Shareholders who have authorized a proxy to attend a shareholders’ meeting later intend to attend the shareholders’ meeting in person or to exercise his voting power by way of electronic transmission, the shareholder shall, at least two days prior to the date of such shareholders’ meeting, serve the Company with a separate written notice revoking his previous appointment of the proxy. Votes by way of proxy shall remain valid if the relevant shareholder fails to revoke his appointment of such proxy before the prescribed time.

Article 4 A shareholders’ meeting shall be held at the head office of the Company or any place that is convenient to the shareholders and suitable for such meeting. The meeting should not start earlier than 9:00 a.m. or later than 3:00 p.m.

Article 5 Unless otherwise provided in Taiwan Company Act, a shareholders’ meeting shall be called by the board of directors of the Company (the “Board”), and the chairman of the Board (the “Chairman”) shall preside as the chairperson at such shareholders’ meeting. In the event that the Chairman is on leave of absence, or is unable to exercise his powers and authorities, Paragraph 3 of Article 208 of Taiwan Company Act shall be followed. If a shareholders’ meeting is called by any person other than the Board, the person who has called the meeting shall preside as the chairperson at such shareholders’ meeting; if there is more than one person who has called a shareholders’ meeting, such persons shall elect one from among themselves to act as the chairperson at such shareholders’ meeting.

Article 6 The Company may invite attorneys, certified public accountants or relevant persons to attend a shareholders’ meeting. The staff in charge of the administrative affairs at a shareholders’ meeting shall wear an identification card or a badge.

Article 7 The Company shall make audio or video recording of the entire process of a shareholders’ meeting, and preserve the recordings for at least one year.

Article 8 At the scheduled time for a shareholders’ meeting, the chairperson shall announce the commencement of the meeting provided that if the number of shares represented by the shareholders present at the meeting fails to exceed half of the total issued and outstanding shares of the Company (the “Quorum”), the chairperson may announce that the meeting is postponed. The postponements shall be limited to two times and the total time postponed shall not exceed one hour. If the number of shares represented by the shareholders present at the meeting fails to meet the Quorum but exceeds one third of the total number of issued and outstanding shares of the Company after the meeting has been postponed twice, a tentative resolution may be passed by a majority of those represented in accordance with Paragraph 1 of Article 175 of Taiwan Company Act. If the number of shares represented by the shareholders present at the meeting exceeds half of the total issued and outstanding shares of the Company before the end of the meeting, the tentative resolution may be re-proposed by the chairperson to be passed in the shareholders’ meeting in accordance with Article 174 of Taiwan Company Act.

Article 9 If a shareholders’ meeting is called by the Board, the agenda of such meeting shall be prepared by the Board and such meeting shall proceed in accordance with the agenda. No modification to the agenda shall be made unless shareholders resolve otherwise at such shareholders’ meeting.

The preceding paragraph shall apply mutatis mutandis in cases where a shareholders’ meeting is called by any person entitled to call the meeting other than the Board.

Before the procedure set forth in the agenda prepared pursuant to the preceding two paragraphs (including the extemporary motions) has completely ended, the chairperson may not adjourn the meeting unless shareholders resolve otherwise at such meeting.

When the meeting is adjourned, shareholders may not designate another chairperson to continue the meeting at the same venue or another venue; in the event that the chairperson adjourns the meeting in violation of the Rules, shareholders, by a majority of votes represented by the attending shareholders, may designate one person as chairperson to continue the meeting.

Article 10 During a shareholders’ meeting, the chairperson may announce a break for a period of time in his discretion.

Article 11 When a shareholder present at a shareholders’ meeting wishes to speak, a speech note should be filled out with summary of the speech, the shareholder account number (or the number of attendance card) and the account name of the shareholder. The chairperson should decide the sequence of speeches by shareholders. If any shareholder present at a shareholders’ meeting submits a speech note but does not speak, no speech should be deemed to have been made by such shareholder. In case the contents of the actual speech of a shareholder are inconsistent with the contents of the speech note, the contents of the actual speech shall prevail. When an attending shareholder delivers a speech, unless otherwise permitted by the chairperson and the shareholder who is making the speech, no shareholder may interrupt the speech. If any shareholder violates this provision, the chairperson shall intervene to stop such interruption.

Article 12 Unless otherwise permitted by the chairperson, each shareholder shall not speak more than two times (each time not exceeding five minutes) for each proposal.

In case the speech of any shareholder violates the preceding paragraph or exceeds the scope of the proposal for current discussion, the chairperson may stop the shareholder from continuing delivering the speech.

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Article 13 If a juristic person is authorized to attend the shareholders’ meeting on behalf of another shareholder, only one representative of such juristic person may attend the meeting. If a juristic shareholder designates two or more representatives to attend the shareholders’ meeting, only one representative can speak for each proposal.

Article 14 After the speech of a shareholder, the chairperson may respond by himself or appoint an appropriate person to respond.

Article 15 When the chairperson is of the opinion that a proposal has been sufficiently discussed to be put to vote, the chairperson may announce the cease of discussion and bring the proposal to vote.

Article 16 The chairperson shall designate the persons supervising the casting of votes and the counting thereof for resolutions. The person supervising the casting of votes shall be a shareholder. The result of the resolution shall be reported on the spot and written into records.

Article 17 Unless otherwise provided in Taiwan Company Act or the Articles of Incorporation of the Company, a resolution shall be passed by a majority of the votes represented by the shareholders present at a shareholders’ meeting. During voting, resolutions shall be deemed adopted if all the attending shareholders voice no objection after consultation by the chairperson.

Article 18 If there is an amendment to or a substitute for a proposal for resolution, the chairperson shall arrange the sequence for resolution along with the original proposals. If any one of them has been adopted, the remaining proposals shall be deemed rejected and no further resolution is needed.

Article 19 The chairperson may direct disciplinary personnel (or security personnel) to maintain the order of the meeting place. Such disciplinary personnel (or security personnel) shall wear a badge marked “Disciplinary Staff”.

Article 20 For matters not provided in the Rules, Taiwan Company Act, applicable laws and regulations, and the Articles of Incorporation of the Company shall apply.

Article 21 The Rules and any revisions thereof shall take effect upon approval by shareholders at the shareholders’ meeting.

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■ Appendix 2

ASE Technology Holding Co., Ltd. Articles of Incorporation

Chapter One: General Principals

Article 1.

The Company is called 日月光投資控股股份有限公司 and is registered as a company limited by shares according to the ROC Company Act. The English name of the Company is ASE Technology Holding Co., Ltd.

Article 2.

The Company is engaged in the following businesses:

H201010 General Investment Business.

Article 3.

The investment made by the Company in other companies as a limited liability shareholder thereof is not subject to the limitation that such investment shall not exceed a certain percentage of the paid-in capital as set forth in the ROC Company Act.

Article 4.

The Company may provide external guaranty.

Article 5.

The Company’s headquarter is located in Kaohsiung, Taiwan, ROC and may set up domestic or foreign branches, offices or business establishments as resolved by the Board of Directors, if necessary.

Chapter Two: Shares

Article 6.

The Company’s total capital is NT$55 billion divided into 5.5 billion shares with a par value of NT$10 per share. Stock options worth of NT$4 billion are set aside for employee subscription. The Board of Directors is authorized to issue the unissued shares in installments if deemed necessary for business purposes.

“Employees” referred to in the preceding paragraph include employees of the parent or subsidiaries of the Company that meet certain requirements, which are to be prescribed by the Board of Directors.

Article 6-1.

Unless otherwise approved specifically by the central authority of the respective industry or other laws and regulations, when the Company issues new shares, there shall be 10 to 15% of such new shares reserved for subscription by employees of the Company.

The Company may issue new shares to employees with restricted rights after the resolutions of the Shareholders’ Meeting.

The Company may buy back its shares and transfer them to employees in accordance with relevant laws and regulations.

Employees referred to in the three preceding subparagraphs include employees of parent or subsidiary companies that meet certain conditions, which are to be prescribed by the Board of Directors.

Article 7.

According to Article 161-2 of the ROC Company Act, the Company may be exempted from printing any share certificate for the shares issued but shall register the issued shares with a

centralized securities depository enterprise and follow the regulations of that enterprise.

Article 8.
No registration of share transfer shall be made within sixty days before each ordinary general shareholders’ meeting, or within thirty days before each extraordinary general shareholders’ meeting or five days before the record date for dividends, bonuses or other distributions as determined by the Company.

Article 9.
The rules governing stock affairs of the Company shall be made pursuant to the laws and the regulations of the relevant authorities.

Chapter Three: General Shareholders’ Meeting

Article 10.
General shareholders’ meetings include ordinary meetings and extraordinary meetings. Ordinary meetings shall be convened according to law by the Board of Directors once annually within 6 months after the end of each fiscal year. Extraordinary meetings will be held according to the law whenever necessary.

Article 11.
General shareholders’ meetings shall be convened by written notice stating the date, place and purpose dispatched to each shareholder at least 30 days, in the case of ordinary meetings, and 15 days, in the case of extraordinary meetings, prior to the date set for such meeting.

Article 12.
Unless otherwise required by the ROC Company Act, shareholders’ resolutions shall be adopted by at least half of the votes of the shareholders present at a general shareholders’ meeting who hold at least half of all issued and outstanding shares of the Company.

Article 13.
Each shareholder of the Company shall have one vote per share, unless otherwise provided by Article 179 of the ROC Company Act.

Article 14.
Any shareholder, who for any reason is unable to attend general shareholders’ meetings, may execute a proxy printed by the Company, in which the authorized matters shall be expressly stated, to authorize a proxy to attend the meeting for him/her. Such proxy shall be submitted to the Company at least 5 days prior to the general shareholders’ meeting.

Article 15.
The general shareholders’ meeting shall be convened by the Board of Directors unless otherwise stipulated in the ROC Company Act, and the person presiding over the meeting will be the Chairman of the Board of Directors (the “Chairman”). If the Chairman is on leave or for any reason cannot discharge his duty, Paragraph 3 of Article 208 of the ROC Company Act should apply. If the general shareholders’ meeting is convened by a person entitled to do so other than a member of the Board of Directors, that person shall act as the person presiding over the meeting. If two or more persons are entitled to call the general shareholders’ meeting, those persons shall elect one to act as the person presiding over the meeting.

Chapter Four: Director

Article 16.

The Company shall have 9 directors, of which there shall be 3 independent directors and 6 non-independent directors to be elected by the general shareholders' meeting from candidates with legal capacity. Each director shall hold office for a term of three years, and may continue to serve in the office if re-elected.

The election of the directors of the Company shall be conducted pursuant to Article 198 of the ROC Company Act and relevant regulations.

When handling the aforementioned election of directors, the election of independent directors and non-independent directors should be held together, provided, however, that the number of independent directors and non-independent directors elected shall be calculated separately; those that receive votes representing more voting rights will be elected as independent directors or non-independent directors.

The Company shall then establish an audit committee in lieu of supervisors in accordance with Article 14-4 of the ROC Securities and Exchange Act to exercise the powers and duties of supervisors stipulated in the ROC Company Act, the ROC Securities and Exchange Act, and other applicable laws and regulations. The audit committee shall comprise solely of the independent directors. The responsibilities, powers and other related matters of the audit committee shall be separately stipulated in rules adopted by the Board of Directors in accordance with applicable laws and regulations.

Article 16-1.

The election of the Company's directors uses the candidate nomination system. Shareholders who hold 1% or more of the Company's issued shares and the Board of Directors may nominate a list of candidates for directors. After the Board of Directors examines and confirms the qualifications of the candidate(s) for serving as a director, the name(s) is/are sent to the general shareholders' meeting for election. If the general shareholders' meeting is convened by a person entitled to do so other than a member of the Board of Directors, after such person examines and confirms the qualifications of the candidate(s) for serving as a director, the name(s) is/are sent to the general shareholders' meeting for election. All matters regarding the acceptance method and announcement of the nomination of candidates for directors will be handled according to the ROC Company Act, the ROC Securities and Exchange Act, and other relevant laws and regulations.

Article 16-2.

The remuneration of the Company's independent directors is set at NT$3 million per person annually. For those that do not serve a full year, the remuneration will be calculated in proportion to the number of days of the term that were actually served. The additional remuneration of the Company's independent directors who are also the members of the Company's Compensation Committee is set at NT$ 360,000 per person annually. For those that do not serve a full year, the additional remuneration will be calculated in proportion to the number of days of the term that were actually served.

Article 17.

The Board of Directors is constituted by directors. Their powers and duties are as follows:

(1). Preparing business plans;
(2). Preparing surplus distribution or loss make-up proposals;
(3). Preparing proposals to increase or decrease capital;
(4). Reviewing material internal rules and contracts;
(5). Hiring and discharging the general manager;
(6). Establishing and dissolving branch offices;
(7). Reviewing budgets and audited financial statements; and
(8). Other duties and powers granted by or in accordance with the ROC Company Act or shareholders' resolutions.

42 -

Article 18.

The Board of Directors is constituted by directors, and the Chairman and Vice Chairman are elected by more than half of the directors at a board meeting at which two-thirds or more of the directors are present. If the Chairman is on leave or for any reason cannot discharge his duties, his/her acting proxy shall be elected in accordance with Article 208 of the ROC Company Act.

Article 19.

Board of Directors meetings shall be convened according to the law by the Chairman, unless otherwise stipulated by the ROC Company Act. Board of Directors meetings can be held at the place that the Company is headquartered, or at any place that is convenient for the directors to attend and appropriate for the meeting to be convened, or via video conference.

Article 19-1.

Directors shall be notified of Board of Director meetings no later than seven days prior to the meetings. However, in case of any emergency, a Board of Directors meeting may be convened at any time.

Notifications of Board of Directors meetings may be in writing or via email or fax.

Article 20.

A director may execute a proxy to appoint another director to attend the Board of Directors meeting and to exercise his/her voting right, but a director can accept only one proxy.

Chapter Five: Manager

Article 21.

The Company has one general manager. The appointment, discharge and salary of the general manager shall be managed in accordance with Article 29 of ROC Company Act.

Chapter Six: Accounting

Article 22.

The fiscal year of the Company starts from January 1 and ends on December 31 every year. At the end of each fiscal year, the Board of Directors shall prepare financial and accounting books in accordance with the ROC Company Act and submit them according to law to the ordinary general shareholders' meeting for approval.

Article 23.

If the Company is profitable, 0.01% (inclusive) to 1% (inclusive) of the profits shall be allocated as compensation to employees (provided 0.01% to 0.05% shall be allocated as compensation to grassroots employees) and 0.75% (inclusive) or less of the profits should be allocated as compensation to directors. While the Company has accumulated losses, the profit shall be set aside to compensate losses before distribution.

The compensation being distributed to employees (including grassroots employees) in the form of stock or cash shall be approved by more than half of the directors at a board meeting at which two-thirds or more of the directors are present and report to the general shareholders' meeting.

The Company distributes profit to employees (including grassroots employees) in the form of shares by a resolution of a meeting of Board of Directors, and in accordance with the provision of the preceding paragraph, may resolve, at the same meeting of the Board of Directors, to distribute the shares by way of new shares to be issued by the Company or existing shares to be repurchased by the Company.

43 -

"Employees" referred to in the three preceding paragraphs include employees of controlling or subsidiary companies that meet certain conditions, which are to be prescribed by the Board of Directors.

"Grassroots employees" referred to in preceding paragraphs one to three is limited to employees of the Company who meet certain qualifications set by the Board of Directors.

Article 24.

The annual net income ("Income") shall be distributed in the order of sequences below:

(1) Making up for losses, if any.
(2) 10% being set aside as legal reserve.
(3) Allocation or reversal of a special surplus reserve in accordance with laws or regulations set forth by the authorities concerned.

The remainder plus the undistributed earnings shall be distributed in accordance with the proposal submitted by the Board of Directors and adopted by the general shareholders' meeting.

However, when earnings are distributed as cash dividends, this may be approved by the majority of the directors at a Board meeting in which over two-thirds of the directors are present, and then reported to the shareholders' meeting.

Article 25.

The Company is at the stage of stable growth. In order to accommodate the capital demand for the present and future business development and satisfy the shareholder's demand for the cash inflow, the Residual Dividend Policy is adopted for the dividend distribution of the Company. The ratio for cash dividends shall be not less than 30% of the total dividends; and the residual dividends shall be distributed in form of stocks in accordance with the distribution plan proposed by the Board of Directors and resolved by the general shareholders' meeting.

Chapter Seven: Appendix

Article 26.

The bylaws and rules of procedure of the Company shall be stipulated separately.

Article 27.

Any matter not covered by these Articles of Incorporation shall be subject to the ROC Company Act.

Article 28.

These Articles of Incorporation were made on February 12, 2018 as approved by all the promoters.

The first amendment was made on June 21, 2018.

The second amendment was made on June 27, 2019.

The third amendment was made on June 24, 2020.

The fourth amendment was made on August 12, 2021.

The fifth amendment was made on June 26, 2024.

The sixth amendment was made on June 25, 2025.

44 -

■ Appendix 3

Shareholdings of All Directors of the Company

I. In accordance with Article 26 of the Securities and Exchange Act, all directors of the Company shall hold at least 107,293,735 shares.

II. As of the ex-dividend date (Apr 26, 2026) shares retained by directors are as follows:

Apr 26, 2026

Title	Name	Current Holdings
		Number of shares	Percentage of shares
Juristic person Director	ASE Enterprises Limited	684,327,886	15.31%
	Represented by: Jason C.S. Chang (Chairman)
	Represented by: Richard H.P Chang (Vice Chairman)
	Represented by: Tien Wu
	Represented by: Jeffrey Chen
	Represented by: Andrew Tang
Director	Chang Dan Yao Danielle	0	—
Independent Director	Shen-Fu Yu	0	—
	Mei-Yueh Ho	0	—
	Wen-Chyi Ong	0	—

Note 1: As of the ex-dividend date, a total of 684,327,886 shares were retained by all directors, which meets the requirement under Article 26 of the Securities Exchange Act.

Note 2: The Company has set up an Audit Committee; therefore, the provisions on the minimum percentage requirements for the shareholding of supervisors shall not apply.

■ Appendix 4

Effect upon Business Performance, EPS and Shareholders' ROI of any stock dividend distribution proposed or adopted

Not Applicable.

The Company will only distribute cash dividends this year and will not issue stock dividends.

45 -

Summary of Corporate Governance Differences

Item 16G. Corporate Governance

As a company listed on the NYSE, we are subject to certain corporate governance rules of the NYSE. The application of the NYSE’s corporate governance rules is limited for foreign private issuers, recognizing that they must comply with domestic requirements. As a foreign private issuer, we must comply with the following NYSE corporate governance rules: 1) satisfy the audit committee requirements of the SEC; 2) the principal executive officer must promptly notify the NYSE in writing upon becoming aware of any material non-compliance with applicable NYSE corporate governance rules; 3) submit annual and interim affirmations to the NYSE regarding compliance with applicable NYSE corporate governance requirements; and 4) provide a brief description of any significant differences between our corporate governance practices and those required of U.S. companies under the NYSE listing standards. The table below sets forth the significant differences between our corporate governance practices and those required of U.S. companies under the NYSE listing standards.

New York Stock Exchange Corporate Governance Rules Applicable to U.S. Companies	Description of Significant Differences Between Our Governance Practices and the NYSE Corporate Governance Rules Applicable to U.S. Companies
Director independence
Listed companies must have a majority of independent directors, as defined under the NYSE listing standards.	Three members of our board of directors are independent as defined in Rule 10A-3 under the Exchange Act. We do not assess the independence of our directors under the independence requirements of the NYSE listing standards. Pursuant to relevant laws and regulations of the R.O.C., we have three independent directors on our board of directors that were elected through the candidate nomination system at our annual general shareholders’ meeting on June 26, 2024.
To empower non-management directors to serve as a more effective check on management, the non-management directors of each company must meet at regularly scheduled executive sessions without management.	All of our directors attend the meetings of the board of directors. Our independent directors do not meet at regularly scheduled executive sessions without management. The R.O.C. Company Law does not allow separate board meetings of part but not all of the board of directors.
Nominating/Corporate governance committee
Listed companies must have a nominating/corporate governance committee composed entirely of independent directors and governed by a written charter that provides for certain responsibilities of the committee set out in the NYSE listing standards.	We do not have a nominating/corporate governance committee. The R.O.C. Company Law does not require companies incorporated in the R.O.C. to have a nominating/corporate governance committee. Currently, our board of directors performs the duties of a corporate governance committee and regularly reviews our corporate governance principles and practices. In addition, our chief administration officer was appointed as the corporate governance officer by the board of directors to facilitate the operation of the board of directors.

The R.O.C. Company Law requires that directors be elected by shareholders. Under R.O.C. laws and regulations, companies that have independent directors are required to adopt a candidate nomination system for the election of independent directors. The directors (including independent directors) of the company listed on the TWSE or the Taipei Exchange shall be elected by adopting the candidate nomination system. Our three independent directors were elected through the candidate nomination system provided in our Articles of Incorporation. |
| Compensation committee
Listed companies must have a compensation committee composed entirely of independent directors and governed by a written charter that provides for certain responsibilities of the committee set out in the NYSE listing standards. | We have a compensation committee as required by the regulations promulgated by the FSC. The charter of such committee contains similar responsibilities as those provided under NYSE listing standards. |
| In addition to any requirement of Rule 10A-3(b)(1), all compensation committee members must satisfy the | We do not assess the independence of our compensation committee members under the independence requirements of the NYSE listing standards but adopt the independence |

New York Stock Exchange Corporate Governance Rules Applicable to U.S. Companies	Description of Significant Differences Between Our Governance Practices and the NYSE Corporate Governance Rules Applicable to U.S. Companies
independence requirements for independent directors set out in the NYSE listing standards.	standard as promulgated under the R.O.C. Regulations Governing the Appointment and Exercise of Powers by the Remuneration Committee of a Company Whose Stock is Listed on the TWSE or the Taipei Exchange.
Audit committee
Listed companies must have an audit committee that satisfies the requirements of Rule 10A-3 under the Exchange Act.	We have an audit committee that satisfies the requirements of Rule 10A-3 under the Exchange Act and the requirements under the R.O.C. Securities and Exchange Act.
The audit committee must have a minimum of three members. In addition to any requirement of Rule 10A-3(b)(1), all audit committee members must satisfy the independence requirements for independent directors set out in the NYSE listing standards.	We currently have three members on our audit committee. Our audit committee members satisfy the independence requirements of Rule 10A-3 under the Exchange Act. We do not assess the independence of our audit committee member under the independence requirements of the NYSE listing standards.
The audit committee must have a written charter that provides for the duties and responsibilities set out in Rule 10A-3 and addresses certain other matters required by the NYSE listing standards.	Our audit committee charter provides for the audit committee to assist our board of directors in its oversight of (i) the integrity of our financial statements, (ii) the qualifications, independence, and performance of our independent auditor and (iii) our compliance with legal and regulatory requirements and provides for the duties and responsibilities set out in Rule 10A-3. Our audit committee charter does not address all the matters required by the NYSE listing standards beyond the requirements of Rule 10A-3.

Because the appointment and retention of our independent auditor are the responsibility of our entire board of directors under R.O.C. laws and regulations, our audit committee charter provides that the audit committee shall make recommendations to the board of directors with respect to these matters. |
| Each listed company must have an internal audit function. | We have an internal audit function. Under the R.O.C. Regulations for the Establishment of Internal Control Systems by Public Companies, a public company is required to set out its internal control systems in writing, including internal audit implementation rules, which must be approved by the board of directors. Our entire board of directors and the principal executive officer are responsible for the establishment of the internal audit functions, compliance with the internal audit implementation rules, and oversight of our internal control systems, including the appointment and retention of our independent auditor. |
| Equity compensation plans
Shareholders must be given the opportunity to vote on all equity compensation plans and material revisions thereto, except for employment inducement awards, certain grants, plans, and amendments in the context of mergers and acquisitions, and certain specific types of plans. | The board of directors has authority under R.O.C. laws and regulations to approve (i) the distribution of employee compensation and (ii) employee stock option plans by a majority vote of the board of directors at a meeting where at least two-thirds of all directors are present and to grant options to employees pursuant to such plans, provided that shareholders’ approval is required if the exercise price of an option would be less than the closing price of the Common Shares on the TWSE on the grant date of the option, subject to the approval of the Securities and Futures Bureau of the FSC, and to approve treasury stock programs and the transfer of shares to employees under such programs by a majority vote of the board of directors in a meeting where at least two-thirds of all directors are present. |
| Corporate governance guidelines | |

New York Stock Exchange Corporate Governance Rules Applicable to U.S. Companies	Description of Significant Differences Between Our Governance Practices and the NYSE Corporate Governance Rules Applicable to U.S. Companies
Listed companies must adopt and disclose corporate governance guidelines.	We have adopted the corporate governance best practice principles in accordance with the Corporate Governance Best Practice Principles for TWSE and Taipei Exchange Listed Companies promulgated by the TWSE and the Taipei Exchange, and we provide an explanation of the differences between our practice and the principles, if any, in our R.O.C. annual report. We have posted our corporate governance best practice principles on our website. Also, we have a dedicated section on our website to disclose the relevant information and inform investors how to access such principles.
Code of ethics for directors, officers, and employees
Listed companies must adopt and disclose a code of business conduct and ethics for directors, officers, and employees, and promptly disclose any waivers of the code for directors or executive officers.	We have adopted a code of ethics that satisfies the requirements of Item 16B of Form 20-F and applies to all employees, officers, supervisors and directors of our company and our subsidiaries and will disclose any waivers of the code as required by Item 16B of Form 20-F. We have posted our code of ethics on our website.
Description of significant differences
Listed foreign private issuers must disclose any significant ways in which their corporate governance practices differ from those followed by domestic companies under NYSE listing standards.	This table contains the significant differences between our corporate governance practices and those required of U.S. companies under the NYSE listing standards.
Principal Executive Officer certification
Each listed company principal executive officer must certify to the NYSE each year that he or she is not aware of any violation by the company of NYSE corporate governance listing standards, qualifying the certification to the extent necessary.

Each listed company principal executive officer must promptly notify the NYSE in writing after any executive officer of the listed company becomes aware of any material non-compliance with any applicable provisions of Section 303A.

Each listed company must submit an executed Written Affirmation annually to the NYSE. In addition, each listed company must submit an interim Written Affirmation each time a change occurs to the board or any of the committees subject to Section 303A. The annual and interim Written Affirmations must be in the form specified by the NYSE. | As a foreign private issuer, we are not required to comply with this rule; however, our principal executive officer provides certifications under Sections 302 and 906 of the Sarbanes-Oxley Act.

We intend to comply with this requirement.

We have complied with this requirement to date and intend to continue to comply going forward. |
| Website
Listed companies must have and maintain a publicly accessible website. | We have and maintain a publicly accessible website. |

ASE Technology Holding Co., Ltd.
No. 26, Jing 3rd Rd., Nanzi Dist.,
Kaohsiung City 811, Taiwan
Tel: 07-3617131
Fax: 07-3613094
E-mail:[email protected]
Https://www.aseglobal.com

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ASEH — Proxy Solicitation & Information Statement 2026

52374_rns_2026-05-22_c3027752-6d0b-419a-a177-93a862231962.pdf

ASEH

Notice and Agenda

Of

2026 Annual Shareholders’ Meeting

Summary Translation

Meeting Notice

Coupon 2

Coupon 3

Coupon 4

Coupon 5

Form of Juristic Person's Appointment of Representative

Instructions for Use of the Proxy

Coupon 6

Notice for Meeting

Meeting Agenda

Table of Contents

Attachments:

Appendices:

ASE Technology Holding Co., Ltd.

2026 Annual Shareholders’ Meeting Procedure

Status Report

Extempore Motions

Meeting Ends

ASE Technology Holding Co., Ltd.

Business Report

2025 Business Results

4. Research and Development

2026 Business Plan Overview

1. Group Management Policy

Impact of External Competitive Environment, Regulatory Environment, and Overall Operating Environment

Audit Committee’s Audit Report

ASE Technology Holding Co., Ltd. and Subsidiaries

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Opinion on Internal Control over Financial Reporting

Basis for Opinion

Definition and Limitations of Internal Control over Financial Reporting

REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

Opinion on the Consolidated Financial Statements

Basis for Opinion

Critical Audit Matter

Goodwill – Allocated to the Packaging and Testing Segments for Impairment - Refer to Notes 4, 5 and 18 to the consolidated financial statements

Critical Audit Matter Description

How the Critical Audit Matter Was Addressed in the Audit

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

ASE TECHNOLOGY HOLDING CO., LTD. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

INDEPENDENT AUDITORS' REPORT

Opinion

Basis for Opinion

Key Audit Matters

Responsibilities of Management and Those Charged with Governance for the Parent Company Only Financial Statements

Auditors’ Responsibilities for the Audit of the Parent Company Only Financial Statements

Notice to Readers

ASE Technology Holding Co., Ltd.

Rules of Procedures for Shareholders’ Meeting

ASE Technology Holding Co., Ltd. Articles of Incorporation

Chapter One: General Principals

Chapter Two: Shares

Chapter Three: General Shareholders’ Meeting

Chapter Four: Director

Article 16-1.

Article 16-2.

Article 17.

Shareholdings of All Directors of the Company

Effect upon Business Performance, EPS and Shareholders' ROI of any stock dividend distribution proposed or adopted

Summary of Corporate Governance Differences

More from ASEH

ASEH Proxy Solicitation & Information Statement 2026