ASE Technology Holding Co., Ltd. filings document foreign-issuer reporting for a Taiwan-based semiconductor assembly, testing and electronic manufacturing services company. Form 6-K reports include monthly unaudited net revenues, quarterly earnings materials, ATM revenue tables, segment results for packaging, testing, EMS and other operations, and related disclosures on capital expenditures, margins, customer concentration, credit lines and debt measures.
The company’s Form 20-F annual reporting covers audited financial statements, business risks and ADR-related disclosure for the ASX depositary receipts. Other filings and exhibits address shareholder meeting procedures, ADR holder proposal mechanics under the deposit agreement, governance notices, safe-harbor statements and risk factors tied to semiconductor demand cycles, competition, technology investment, environmental regulation, international operations and trade-policy exposure.
ASE Technology Holding reported strong first-quarter 2026 results with unaudited consolidated net revenues of NT$173,662 million, up 17.2% year-over-year and slightly down 2.4% from the prior quarter. Net income attributable to shareholders was NT$14,148 million, up from NT$7,554 million a year earlier and modestly below NT$14,713 million in the previous quarter.
Basic earnings per share were NT$3.24, compared with NT$1.75 in 1Q25 and NT$3.37 in 4Q25. EBITDA reached NT$38,165 million, compared with NT$27,628 million in 1Q25. The ATM segment generated net revenues of NT$112,434 million and operating income of NT$15,877 million, while the EMS segment delivered net revenues of NT$61,875 million and operating income of NT$1,906 million.
Total assets rose to NT$957,527 million as of March 31, 2026, with equity attributable to shareholders of NT$350,617 million. The net debt to equity ratio improved to 0.40. Operating activities provided NT$36,387 million of cash, while capital expenditures of NT$44,092 million led to a small decrease in cash and cash equivalents to NT$87,811 million.
ASE Technology Holding Co., Ltd. director Jeffrey Chen reported insider activity involving the company’s Ordinary Shares. On April 24, 2026, an open-market sale of 9,000 Ordinary Shares was executed at NT$473 per share, from shares held indirectly by his spouse. After this transaction, 83,000 Ordinary Shares remained under indirect ownership by his spouse, while a separate entry shows 2,383,000 Ordinary Shares held directly following a holding line dated the same day. A footnote states that the reporting person disclaims beneficial ownership of the reported securities except to the extent of any pecuniary interest.
ASE Technology Holding Co., Ltd. director Jeffrey Chen reported indirect open-market sales of the company’s Ordinary Shares held by his spouse. Across three transactions on April 21–23, 2026, a total of 27,000 shares were sold at prices between NT$463.5000 and NT$487.6667 per share. Following these sales, indirect holdings stood at 92,000 Ordinary Shares, while a separate direct holding entry shows 2,383,000 Ordinary Shares as of April 21, 2026. A footnote states the reporting person disclaims beneficial ownership except to the extent of any pecuniary interest.
ASE Technology Holding Co., Ltd. GM of the ASE Inc. Chung-Li Branch, Chen Tien-Szu, reported open-market sales of a total of 530,000 Ordinary Shares on April 20, 2026. The shares were sold in several trades at prices including 471, 467, and 466 New Taiwan Dollars per share, with a large block at a weighted average of 465.1067 New Taiwan Dollars per share. After these sales, Chen continues to hold more than 2.25 million Ordinary Shares directly.
ASE Technology Holding Co., Ltd. director Jeffrey Chen reported that his spouse conducted open-market sales of a total of 27,000 Ordinary Shares, split into 9,000-share trades on three dates at prices between 446 and 461.5 New Taiwan Dollars per share. These transactions are reported as indirect ownership "By Spouse," with 119,000 indirectly held Ordinary Shares remaining afterward. Chen also reports direct ownership of 2,383,000 Ordinary Shares as of April 16, 2026, and disclaims beneficial ownership of the reported securities except to the extent of any pecuniary interest.
ASE Technology Holding Co., Ltd. director Jeffrey Chen reported a series of indirect open-market sales in the company’s ordinary shares made by his spouse. Over three days, a total of 27,000 ordinary shares were sold at prices between NT$408.33 and NT$432.00 per share.
Following these transactions, 146,000 ordinary shares are reported as held indirectly by his spouse, while a separate holding entry shows 2,383,000 ordinary shares held directly. A footnote states that Chen disclaims beneficial ownership of the reported securities except to the extent of any pecuniary interest.
ASE Technology Holding Co., Ltd. director Chang Chien Shen exercised stock options to acquire 4,500,000 Ordinary Shares on April 9, 2026. He exercised 3,000,000 options at NT$41.10 per share and 1,500,000 options at NT$99.70 per share, converting derivative awards into shares.
Following these exercises, he held 6,247,647 Ordinary Shares directly. The filing also shows indirect holdings of 684,327,886 Ordinary Shares through ASE Enterprises Limited and 265,024,820 Ordinary Shares through Value Tower Ltd., indicating a substantial overall position associated with the director.
ASE Technology Holding Co., Ltd. director Jeffrey Chen reported three open-market sales of Ordinary Shares indirectly held through his spouse. On April 8–10, 2026, a total of 27,000 shares were sold at prices between NT$380.5 and NT$388 per share.
After these transactions, Chen reports 173,000 Ordinary Shares indirectly held by his spouse and a separate 2,383,000 Ordinary Shares held directly. A footnote states that he disclaims beneficial ownership of the reported securities except to the extent of any pecuniary interest.
ASE Technology Holding Co., Ltd. reported strong March 2026 and first-quarter 2026 unaudited consolidated net revenues. March 2026 net revenues were NT$61,577 million (US$1,949 million), up 18.2% sequentially and 14.6% year over year. For first-quarter 2026, consolidated net revenues reached NT$173,662 million (US$5,508 million), a 17.2% year-over-year increase, with a modest 2.4% decline from the prior quarter.
Net revenues for the ATM assembly, testing and material business were a key driver. March 2026 ATM net revenues were NT$39,823 million (US$1,261 million), up 13.9% sequentially and 27.6% year over year. ATM first-quarter 2026 net revenues were NT$112,434 million (US$3,566 million), representing 29.7% year-over-year growth.
ASE Technology Holding Co., Ltd. filed its 2025 annual report on Form 20-F for the year ended December 31, 2025 with the U.S. Securities and Exchange Commission. The report is available on the company’s website and on the SEC’s website.
Shareholders can request hard copies of the audited financial statements in the Form 20-F free of charge through Citibank Shareholder Services. The notice also includes a standard safe harbor statement explaining that forward-looking comments are subject to numerous business, regulatory, geopolitical, and macroeconomic risks described in the 2025 Form 20-F.