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Amkor Technology director Daniel JL Liao received additional restricted stock units as part of his equity compensation. On June 23, 2026, he acquired 2.5166 restricted stock units and 9.4278 restricted stock units, each representing dividend equivalent units credited when Amkor paid a dividend.
These dividend equivalent units convert into additional restricted stock units tied to earlier RSU grants from May 15, 2025 and May 13, 2026, and are subject to the same vesting and other terms as those original awards. The transactions are compensation-related grants rather than open‑market stock purchases or sales.
CHURCHILL WINSTON J reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director Winston J. Churchill reported a small compensation-related equity change. He received 2.5166 dividend equivalent units in the form of restricted stock units, linked to a dividend paid on June 23, 2026 and tied to existing time-vested RSUs granted on May 13, 2026. Following this award, his directly held restricted stock unit balance increased to 2,615.5166 units, each representing one share of common stock when vested.
Amkor Technology director Roger Anthony Carolin reported three compensation-related acquisitions of restricted stock units. On June 23, 2026, he received small blocks of RSUs—2.5166, 9.4278, and 8.1651 units—credited as dividend equivalent units tied to prior time‑vested RSU grants from May 16, 2023, May 15, 2025, and May 13, 2026. Each dividend equivalent unit converts into an additional RSU with the same vesting terms as the original awards, and there were no open‑market share purchases or sales in this filing.
AMKOR TECHNOLOGY, INC. director Douglas A. Alexander reported compensation-related equity changes rather than open-market trading. On June 23, 2026 he acquired small numbers of Restricted Stock Units as dividend equivalent units tied to previously granted time-vested RSUs. These include 2.5166 RSUs linked to a May 17, 2022 grant and 9.4278 RSUs linked to a May 16, 2023 grant, with each dividend equivalent unit converting into an additional RSU under the same terms as the original awards.
AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers reported an option exercise and related share sale. He exercised employee stock options to acquire 5,000 shares of common stock at $7.40 per share and sold 5,000 shares in an open-market transaction at an average price of $86.21 per share. The sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly holds 38,904 shares of Amkor common stock.
Amkor Technology director Winston J. Churchill reported an exercise-and-sell transaction in company stock. He exercised stock options to acquire 5,000 shares of Common Stock at $19.39 per share, then sold 5,000 shares in an open-market sale at $78.20 per share on June 12, 2026. Following these transactions, his directly held position remained at 28,781 Common Stock shares, indicating the option exercise and sale largely served as a liquidity event without changing his overall share count.
AMKR — Notice of Proposed Sale under Form 144 by Mark N. Rogers. The filing lists a proposed sale of 5,000 shares of Common Stock via Stock Option Exercise on 06/16/2026. The record also shows two sales within the prior three months: 5,000 shares on 05/18/2026 for $358,150 and 5,000 shares on 04/16/2026 for $297,150.
This notice names Morgan Stanley Smith Barney LLC as the broker and indicates cash settlement. The filing documents proposed and recent dispositions; it does not state proceeds recipient details beyond the issuer role for the exercise method.
AMKOR TECHNOLOGY, INC. director and 10% owner group member Susan Y. Kim reported an acquisition of common stock tied to previously granted equity awards. On May 15, 2025 she was granted 9,789 time-vested restricted stock units (RSUs), plus 104 dividend equivalent units (DEUs). These RSUs and DEUs vested on May 13, 2026 and on June 12, 2026 converted into 9,893 shares of Amkor common stock on a one-for-one basis at a stated price of $0.00 per share.
Following this conversion, Kim directly holds 6,120,387 Amkor common shares. She also has indirect interests through various entities, including Sujochil, LP with 19,484,809 shares and Sujoda Investments, LP with 3,789,479 shares, as well as multiple trusts and grantor retained annuity trusts. She is treated as having a pecuniary interest in these holdings but disclaims beneficial ownership beyond that pecuniary interest.
AMKR notice: a brokered sale of 5,000 common shares is listed as a stock option exercise to be sold on 06/12/2026 through Morgan Stanley Smith Barney LLC for cash. The excerpt also shows a prior sale of 7,000 common shares on 05/05/2026 for $535,136.
Amkor Technology, Inc. CFO Megan Faust reported an open-market sale of 1,000 shares of common stock on June 9, 2026, at a price of $70.30 per share. After this transaction, she directly holds 132,138 shares. The sale was executed under a Rule 10b5-1 trading plan adopted on February 17, 2026.