ASE Technology Holding Co., Ltd. (ASX)

Jason C.S. Chang has led ASEH as chairman and principal executive officer since it was formed in April 2018, and he also chairs ASE Inc.; the company counts 42 years of his service. His brother Richard H.P. Chang has been vice chairman and president since 2018, also with 42 years. Tien Wu, a director and the chief operating officer since 2018, is also chief executive of ASE Inc., which he joined in March 2000 after working at IBM. Joseph Tung has been chief financial officer since 2018, after running finance at ASE Inc. from December 1994 to July 2020; he came from Citibank. 12345

The Chang family's hold runs through the board. Five of the nine directors represent ASE Enterprises Limited, a Hong Kong company held in trust for the chairman and his family, and counting his other holdings Jason C.S. Chang beneficially owned 21.35% of the shares in March 2026. His son-in-law Andrew Tang has been chief procurement officer since September 2023 and a director since June 2024, and his daughter Dan-Yao Chang joined the board in June 2025. Three directors are independent, among them Mei-Yueh Ho, Taiwan's Minister of Economic Affairs from 2004 to 2006. All 32 people on the SEC's insider record for the company first filed in March 2026. 6789101112131415

Tien Wu has faced an insider trading case since an indictment in 2017, which alleged that he told a friend about ASE's tender offers for SPIL shares before they were announced. A Taiwan appeals court found him guilty on some charges in December 2024 and sentenced him to 22 months; the Supreme Court sent that part back in July 2025; in February 2026 the appeals court affirmed the lower court's not guilty verdict, and prosecutors appealed again in March 2026. The filing says the outcome remains pending. 16171819

At the end of 2025 the company counted 105,947 employees, up from 95,492 a year earlier. About half, 52,173, were direct labor on the production lines; 30,874 did indirect manufacturing work, 14,258 research and development and 8,642 selling and administration. Taiwan held 67,870 of them and China 19,020, and Vietnam reached 2,305 from 746 two years before. The company says it has never had a work stoppage over labor difficulties. 202122