Form 4 Filing for Chang Chien Shen

On April 9, 2026, Chang Chien Shen reported several transactions involving Ordinary Shares. Shen acquired 3,000,000 shares at a price of 41.1 New Taiwan Dollars per share and an additional 1,500,000 shares at 99.7 New Taiwan Dollars per share. Following these acquisitions, Shen directly owns 4,747,647 and 6,247,647 shares respectively. The filing also notes indirect holdings of 684,327,886 shares by ASE Enterprises Limited and 265,024,820 shares by Value Tower Ltd. Additionally, Shen reported the exercise of stock options to acquire 3,000,000 Ordinary Shares with an exercise price of 41.1 New Taiwan Dollars and the exercise of another 1,500,000 stock options with an exercise price of 99.7 New Taiwan Dollars. These options were granted on November 23, 2018, and August 18, 2023, with varying vesting schedules. The reporting owner is identified as a director of ASE Technology Holding Co., Ltd.