ASE Technology Q3 2026 profit jumps 148% to NT$27B

Management's Q4 2026 outlook includes consolidated revenue growth of 6% to 8% quarter over quarter and a gross margin of 23% to 24%.

Rhea-AI Filing Summary

ASE Technology Holding Co., Ltd. reported Q3 2026 consolidated net revenues of NT$244.161 billion, up 45% year over year. Gross profit was NT$53.967 billion, up 87%, and operating income was NT$33.142 billion, up 151%. Net income attributable to shareholders of the parent was NT$26.996 billion, up 148%; diluted EPS was NT$5.84 versus NT$2.41 in Q3 2025. ATM revenue was NT$150.593 billion, up 51%, and EMS revenue was NT$92.997 billion, up 35%.

At September 30, 2026, cash and cash equivalents were NT$88.421 billion and total interest-bearing debts were NT$406.461 billion. Based on current business outlook and an exchange-rate assumption of US$1 to NT$31.9, management projects Q4 2026 consolidated revenue growth of 6% to 8% quarter over quarter, gross margin of 23% to 24%, and operating margin of 14.5% to 15.5%. The ATM outlook calls for revenue growth of 11% to 13% and a gross-margin increase of 100 to 200 basis points quarter over quarter; EMS revenue is projected to be flattish and operating margin around 2%.

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Positive

• Moderate pointQ3 revenue reached NT$244.161 billion, up 45% year over year.
• Moderate pointParent net income reached NT$26.996 billion, up 148% year over year.

Negative

• Moderate pointNet debt to equity ratio: 0.66, versus 0.47 on June 30, 2026.

Filing Explained

The balance sheet shows higher reported leverage over Q3: interest-bearing debt rose from NT$306,230 million at June 30, 2026 to NT$406,461 million at September 30, 2026, and net debt to equity increased from 0.47 to 0.66.

Key Figures

Consolidated net revenues: NT$244.161 billion Operating income: NT$33.142 billion Net income attributable to shareholders of the parent: NT$26.996 billion +3 more

6 metrics

Consolidated net revenues NT$244.161 billion Q3 2026; up 45% year over year

Operating income NT$33.142 billion Q3 2026; up 151% year over year

Net income attributable to shareholders of the parent NT$26.996 billion Q3 2026; up 148% year over year

Diluted EPS NT$5.84 Q3 2026; NT$2.41 in Q3 2025

Total interest bearing debts NT$406.461 billion September 30, 2026; NT$306.230 billion at June 30, 2026

Net debt to equity ratio 0.66 September 30, 2026; 0.47 at June 30, 2026

Key Terms

EBITDA, purchase price allocation, non-controlling interests, current ratio, +1 more

5 terms

EBITDA financial

"EBITDA stands for net income or loss before interest, taxes"

EBITDA stands for earnings before interest, taxes, depreciation, and amortization. It measures a company's profitability by focusing on the money it makes from its core operations, ignoring expenses like taxes and accounting adjustments. Investors use EBITDA to compare how well different companies are performing financially, as it provides a clearer picture of operational success without the influence of financial structure or accounting choices.

purchase price allocation financial

"PPA expenses are the P&L impacts from the accounting treatment of purchase price allocation"

Purchase price allocation is the accounting process that breaks down the total amount paid for an acquired business into specific pieces—like tangible assets, identifiable intangible assets (brands, patents, customer lists) and goodwill—based on their estimated fair values. Investors care because this breakdown affects future earnings, tax costs and reported asset values: higher allocations to amortizable intangibles or goodwill can change profit volatility, depreciation and potential impairment charges, similar to splitting a restaurant bill to see what you actually bought versus what you paid extra for goodwill.

non-controlling interests financial

"Net Income Attributable to Shareholders of the Parent"

An ownership stake in a subsidiary held by outside shareholders rather than the parent company, representing the portion of that subsidiary’s assets and profits the parent does not control. For investors, it shows what part of consolidated earnings and equity belongs to others — like a roommate who owns part of a house — which affects how much value and profit per share are truly attributable to the parent company’s shareholders.

current ratio financial

"Current ratio 1.16"

The current ratio measures a company’s short-term ability to pay upcoming bills by comparing assets that can be turned into cash within a year (like cash, inventory, and receivables) to obligations due within the same period. Investors use it like a household budget check — a ratio above 1 suggests the company has more short-term resources than immediate debts, while a very low or very high ratio can signal liquidity risk or inefficient use of assets.

net debt to equity ratio financial

"Net debt to equity ratio 0.66"

Net debt to equity ratio compares a company’s net debt (total borrowings minus cash on hand) to the owners’ stake in the business (equity), showing how much of the company is financed by borrowing versus owner capital. Investors use it to gauge financial risk and resilience: a higher ratio is like a household with a large mortgage and little savings, which is more vulnerable to interest rises or income drops than one with low debt relative to home value.

FAQ

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

What was ASX's Q3 2026 revenue?

ASE Technology Holding reported consolidated net revenues of NT$244.161 billion in Q3 2026, up 45% year over year. ATM revenue was NT$150.593 billion and EMS revenue was NT$92.997 billion.

How much net income did ASX report in Q3 2026?

Net income attributable to shareholders of the parent was NT$26.996 billion, up 148% year over year. Diluted EPS was NT$5.84, compared with NT$2.41 in Q3 2025.

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

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Available on EDGAR 10/29/2026 - 06:08 AM EDT Accepted by SEC EDGAR 10/29/2026 - 06:08 AM EDT Learn about SEC filing dates

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 6-K

REPORT OF FOREIGN PRIVATE ISSUER PURSUANT TO RULE 13a-16 OR 15d-16

UNDER THE SECURITIES EXCHANGE ACT OF 1934

 October 2026 

Commission File Number 001-16125

ASE Technology Holding Co., Ltd.

(Translation of registrant’s name into English)

26, Chin 3rd Road

Kaohsiung, Taiwan

Republic of China

(Address of principal executive offices)

Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.

Form 20-F  ☒         Form 40-F ☐    

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

	ASE TECHNOLOGY HOLDING CO., LTD.
Date: October 29, 2026	By:	/s/ Joseph Tung
		Name:  Joseph Tung
		Title:    Chief Financial Officer

Third Quarter 2026 Earnings Release 29 October, 2026 ASE Technology Holding

Safe Harbor Notice This presentation contains "forward - looking statements" within the meaning of Section 27A of the United States Securities Act of 1933, as amended, and Section 21E of the United States Securities Exchange Act of 1934, as amended. These statements are made under the “safe harbor” provisions of the U.S. Private Securities Litigation Reform Act of 1995. Although these forward - looking statements, which may include statements regarding our future results of operations, financial condition or business prospects, are based on our own information and information from other sources we believe to be reliable, you should not place undue reliance on these forward - looking statements, which apply only as of the date of this presentation. The words “anticipate,” “believe,” “estimate,” “expect,” “intend,” “plan” and similar expressions, as they relate to us, are intended to identify these forward - looking statements in this presentation. These forward - looking statements are necessarily estimates reflecting the best judgment of our senior management and our actual results of operations, financial condition or business prospects may differ materially from those expressed or implied by the forward - looking statements for reasons including, among others, risks associated with cyclicality and market conditions in the semiconductor or electronic industry; changes in our regulatory environment, including our ability to comply with new or stricter environmental regulations and to resolve environmental liabilities; demand for the outsourced semiconductor packaging, testing and electronic manufacturing services we offer and for such outsourced services generally; the highly competitive semiconductor or manufacturing industry we are involved in; our ability to introduce new technologies in order to remain competitive; international business activities; our business strategy; our future expansion plans and capital expenditures; the strained relationship between the Republic of China and the People’s Republic of China; general economic and political conditions; the recent shift in United States trade policies; possible disruptions in commercial activities caused by natural or human - induced disasters; fluctuations in foreign currency exchange rates; and other factors. For a discussion of these risks and other factors, please see the documents we file from time to time with the Securities and Exchange Commission, including the 2025 Annual Report on Form 20 - F filed on April 1, 2026. 2

Consolidated Statements of Income Quarterly Comparison (Unaudited) 3 (NT$ million) Q3 / 2026 % Q2 / 2026 % Q3 / 2025 % QoQ YoY Net Revenues: ATM 150,593 61.7% 125,069 65.5% 99,393 59.0% 20% 52% EMS 92,997 38.1% 65,411 34.2% 68,405 40.6% 42% 36% Others 571 0.2% 584 0.3% 771 0.4% -2% -26% Total Net Revenues 244,161 100.0% 191,064 100.0% 168,569 100.0% 28% 45% Gross Profit 53,967 22.1% 40,147 21.0% 28,877 17.1% 34% 87% Operating Income (Loss) 33,142 13.6% 21,130 11.1% 13,201 7.8% 57% 151% Pretax Income (Loss) 32,710 13.4% 25,696 13.4% 13,976 8.3% 27% 134% Income Tax Benefit (Expense) (4,831) -2.0% (4,171) -2.2% (2,615) -1.6% Non-controlling Interests (883) -0.4% (460) -0.2% (491) -0.3% Net Income Attributable to Shareholders of the Parent 26,996 11.1% 21,065 11.0% 10,870 6.4% 28% 148% Basic EPS(NT$) 6.13 4.80 2.50 28% 145% Diluted EPS(NT$) 5.84 4.61 2.41 27% 142%

Consolidated Operations (Unaudited) 4 85.6 91.6 99.4 108.7 111.6 125.1 150.6 61.9 58.4 68.4 68.6 61.4 65.4 93.0 16.8% 17.0% 17.1% 19.5% 20.0% 21.0% 22.1% 6.5% 6.8% 7.8% 9.9% 10.1% 11.1% 13.6% 0% 10% 20% 30% 0.0 50.0 100.0 150.0 200.0 250.0 Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 NT$ billion ATM Revenue EMS Revenue Other Revenue Gross Margin Operating Margin

ATM Statements of Income Quarterly Comparison (Unaudited) 5 (NT$ million) Q3 / 2026 % Q2 / 2026 % Q3 / 2025 % QoQ YoY Net Revenues: Packaging 122,945 81.2% 100,324 79.5% 80,602 80.4% 23% 53% Testing 26,302 17.4% 23,665 18.8% 18,420 18.3% 11% 43% Direct Material 2,148 1.4% 2,057 1.6% 1,190 1.2% 4% 81% Others 90 0.0% 102 0.1% 77 0.1% -12% 17% Total Net Revenues* 151,485 100.0% 126,148 100.0% 100,289 100.0% 20% 51% Gross Profit 46,412 30.6% 34,487 27.3% 22,697 22.6% 35% 104% Operating Income (Loss) 30,243 20.0% 19,778 15.7% 10,862 10.8% 53% 178% *: The ATM revenue reported here contains revenues eliminated at the holding company level related to intercompany transactions bet ween our ATM & EMS businesses.

ATM Operations (Unaudited) 6 19.6 20.2 22.7 28.8 29.2 34.5 46.4 86.7 92.6 100.3 109.7 112.4 126.1 151.5 22.6% 21.9% 22.6% 26.3% 26.0% 27.3% 30.6% 10% 20% 30% 40% 50% 0.0 50.0 100.0 150.0 200.0 Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 NT$ billion Gross Profit Gross Margin Revenue

ATM Revenues by Application (Unaudited) 7 48% 46% 45% 45% 43% 41% 38% 22% 24% 25% 25% 27% 30% 34% 30% 30% 30% 30% 30% 29% 28% 0% 20% 40% 60% 80% 100% Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 Communication Computing Automotive, Consumer & Others

ATM Revenues by Type (Unaudited) 8 46% 47% 48% 49% 49% 49% 51% 28% 28% 26% 24% 24% 24% 24% 6% 5% 6% 7% 7% 6% 6% 18% 18% 18% 19% 19% 19% 17% 2% 2% 2% 1% 1% 2% 2% 0% 20% 40% 60% 80% 100% Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 Material Testing Others Wirebonding Bump/FC/WLP /SiP

EMS Operations Quarterly Comparison (unaudited) (NT$ million) Q3 / 2026 % Q2 / 2026 % Q3 / 2025 % QoQ YoY EMS Net Revenues 93,469 100.0% 65,789 100.0% 69,022 100.0% 42% 35% Gross Profit 7,793 8.3% 5,873 8.9% 6,379 9.2% 33% 22% Operating Income (Loss) 3,111 3.3% 1,569 2.4% 2,541 3.7% 98% 22% 9 33% 33% 30% 30% 24% 22% 19% 10% 10% 9% 11% 15% 16% 21% 33% 32% 40% 36% 36% 36% 41% 12% 14% 12% 13% 14% 16% 12% 10% 9% 7% 8% 9% 8% 6% 2% 2% 2% 2% 2% 2% 1% 0% 20% 40% 60% 80% 100% Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 Communication Computing Consumer Industrial Automotive Others

Key Balance Sheet Items & Indices (Unaudited) 10 *: EBITDA stands for net income or loss before interest, taxes, depreciation, amortization, impairment and investment gain or lo ss as well as other items. (NT$ million) Sept. 30, 2026 Jun. 30, 2026 Cash and cash equivalent $88,421 $91,292 Financial assets - current 19,517 16,081 Financial assets - non current & investments - equity method 70,189 67,852 Property, plant & equipment 621,962 517,715 Total assets 1,244,785 1,071,443 Short-term loans & short-term bills payable 70,428 60,063 Current portion of bonds payable 2,000 0 Current portion of long-term loans 3,141 11,787 Bonds payable 42,201 14,985 Long-term loans & long-term bills payable 276,633 209,603 Total interest bearing debts 406,461 306,230 Total liabilities 790,863 652,248 Total equity (Including non-controlling interest) 453,922 419,195 Quarterly EBITDA* 57,963 45,779 Current ratio 1.16 1.07 Net debt to equity ratio 0.66 0.47

Equipment Capital Expenditures vs. EBITDA (Unaudited) 11 892 992 779 733 1,003 1,695 2,104 843 879 1,095 1,242 1,210 1,450 1,814 0 500 1,000 1,500 2,000 2,500 Q1/25 Q2/25 Q3/25 Q4/25 Q1/26 Q2/26 Q3/26 US$ million Capex EBITDA

Fourth Quarter 2026 Outlook (1/2) Based on our current business outlook and exchange rate assumptions of 1 US dollar to 31 .9 NT dollars (versus 31 .9 in 3 rd quarter 2026) , management projects overall performance for the fourth quarter of 2026 to be as follows:  Consolidated  In NT dollar terms, our consolidated 4th quarter revenue should grow by 6 to 8 percent quarter over quarter;  Our consolidated 4th quarter gross margin should be between 23% to 24%;  Our consolidated 4th quarter operating margin should be between 14.5% to 15.5%. 12

Fourth Quarter 2026 Outlook (2/2)  ATM  In NT dollar terms, our ATM 4th quarter revenue should grow by 11 to 13 percent quarter over quarter;  Our ATM 4th quarter gross margin should increase by 100 to 200 basis points quarter over quarter.  EMS  In NT dollar terms, our EMS 4th quarter revenue should be flattish quarter over quarter;  Our EMS 4th quarter operating margin should be around 2%. 13 Based on our current business outlook and exchange rate assumptions of 1 US dollar to 31 .9 NT dollars (versus 31. 9 in 3 rd quarter 2026) , management projects overall performance for the fourth quarter of 2026 to be as follows:

Thank you

Appendix 1 Consolidated Statements of Comprehensive Income (Unaudited) 15 (NT$ thousand) Q1/ 2025 1&2 Q2/ 2025 1&2 Q3/ 2025 1&2 Q4/ 2025 1&2 FY/ 2025 1&2 Q1/ 2026 1&2 Q2/ 2026 1&2 Q3/ 2026 1&2 Revenues 148,153,262 150,750,323 168,568,888 177,915,165 645,387,638 173,662,152 191,063,523 244,161,159 COGS 123,260,526 125,062,803 139,692,147 143,179,289 531,194,765 138,844,015 150,917,043 190,194,299 PPA under COGS 557,027 520,681 515,185 507,347 2,100,240 535,245 532,168 521,354 Gross profit 24,892,736 25,687,520 28,876,741 34,735,876 114,192,873 34,818,137 40,146,480 53,966,860 Gross profit excl. PPA 25,449,763 26,208,201 29,391,926 35,243,223 116,293,113 35,353,382 40,678,648 54,488,214 OPEX 15,221,435 15,494,438 15,676,044 17,045,424 63,437,341 17,325,270 19,016,380 20,824,978 PPA under OPEX 262,652 260,038 262,807 262,837 1,048,334 270,317 270,212 270,356 Operating income 9,671,301 10,193,082 13,200,697 17,690,452 50,755,532 17,492,867 21,130,100 33,141,882 Operating income excl. PPA 10,490,980 10,973,801 13,978,689 18,460,636 53,904,106 18,298,429 21,932,480 33,933,592 Non Op gain/(loss) 138,628 (938,600) 775,540 569,727 545,295 668,460 4,566,238 (431,762) PPA under Non Op gain/ (loss) 61 959 155 227 1,402 0 80 2,397 Non Op gain/ (loss) excl. PPA 138,689 (937,641) 775,695 569,954 546,697 668,460 4,566,318 (429,365) Pretax income 9,809,929 9,254,483 13,976,238 18,260,179 51,300,827 18,161,327 25,696,338 32,710,120 PPA under Pretax income 819,740 781,678 778,147 770,411 3,149,976 805,562 802,460 794,107 Pretax income excl. PPA 10,629,669 10,036,161 14,754,385 19,030,590 54,450,805 18,966,889 26,498,798 33,504,227 Tax expenses 2,021,624 1,575,805 2,615,170 3,247,695 9,460,294 3,629,419 4,171,531 4,830,859 PPA under Tax expense (12,964) (9,337) (10,837) (10,255) (43,393) (15,202) (14,883) (13,432) Tax expense excl. PPA 2,034,588 1,585,142 2,626,007 3,257,950 9,503,687 3,644,621 4,186,414 4,844,291 Non-controlling interests 234,472 157,593 491,305 298,969 1,182,339 400,134 459,658 882,823 PPA under Non-controlling interests 8,408 5,811 8,129 5,111 27,459 22,770 20,094 14,610 Non-controlling interests excl. PPA 242,880 163,404 499,434 304,080 1,209,798 422,904 479,752 897,433 Net income attributable to shareholders of the parent 7,553,833 7,521,085 10,869,763 14,713,515 40,658,196 14,131,774 21,065,149 26,996,438 PPA expenses under Net income attributable to shareholders of the parent 798,368 766,530 759,181 755,045 3,079,124 767,590 767,483 766,065 Net income attributable to shareholders of the parent excl. PPA 8,352,201 8,287,615 11,628,944 15,468,560 43,737,320 14,899,364 21,832,632 27,762,503 Total PPA expenses 806,776 772,341 767,310 760,156 3,106,583 790,360 787,577 780,675 Basic EPS (NT$) 1.75 1.74 2.50 3.37 9.37 3.23 4.80 6.13 Basic EPS (NT$) excl. PPA 1.93 1.91 2.68 3.55 10.07 3.41 4.98 6.31 Diluted EPS (NT$) 1.64 1.70 2.41 3.24 8.89 3.08 4.61 5.84 Diluted EPS (NT$) excl. PPA 1.82 1.88 2.58 3.41 9.59 3.25 4.78 6.01 1 : PPA expenses are the P&L impacts from the accounting treatment of purchase price allocation in relation to the ASE/SPIL, AS E/I nfineon and ASE/ADI transactions which resulted in increased asset values from purchase price premiums in inventory, PP&E, intangibles, right - of - use assets, othe r assets, and deferred tax liability. The PPA expenses excluded are related to depreciation, amortization, other expenses, and income tax benefit $0.77bn in 1Q25, $0. 75bn in 2Q25, $0.74bn in 3Q25, 4Q25, 1Q26, 2Q26 and 3Q26, and $3.00bn in 2025. 2 : PPA expenses are the P&L impacts from the accounting treatment of purchase price allocation in relation to the USI/ Asteelflash , USI/ Hirschmann and USI/ Eugenlight Technologies transactions, which resulted in increased asset and liability values from purchase price premiums in inventory, PP &E, intangibles, right - of - use assets and deferred tax liability. The PPA expenses excluded are related to depreciation, amortization, other expenses, and income tax benefit $0.04bn in 1Q25, $0.02bn in both 2Q25 and 4Q25, $0.03bn in 3Q25, $0.11bn in 2025, $0.05bn in both 1Q26 and 2Q26, and $0.04bn in 3Q26.