Amkor Technology Inc. filings document the regulatory record for a Nasdaq-listed outsourced semiconductor packaging and test company. The company’s 8-K reports furnish results of operations and financial condition, disclose material agreements and other events, and describe capital-structure matters involving common stock, senior notes and convertible senior notes.
AMKR filings also cover governance and ownership subjects through definitive proxy materials, officer appointments and underwriting agreements related to registered secondary offerings. Recent debt disclosures describe 0.00% convertible senior notes due 2031, subsidiary guarantees and their relationship to other senior unsecured indebtedness, while earnings-related filings include non-GAAP measures such as EBITDA alongside GAAP results.
AMKOR TECHNOLOGY, INC. director and 10% owner group member Susan Y. Kim reported routine equity compensation activity. On May 13, 2026, she exercised 9,893.0573 restricted stock units granted in 2025, with a small 0.0573-unit portion settled in cash and the remainder converting into common stock within 30 days.
On the same date, she received a new grant of 2,613 restricted stock units under Amkor’s 2021 Equity Incentive Plan, vesting on the earlier of one year from grant or the next annual shareholder meeting, for no consideration other than board service. Entities associated with her, including Sujochil, LP and Sujoda Investments, LP, as well as various trusts and GRATs, are treated as beneficially owning large blocks of Amkor common stock, though she disclaims beneficial ownership beyond her pecuniary interest.
Amkor Technology director Roger Anthony Carolin received a grant of 2,613 restricted stock units (RSUs) on May 13, 2026. These RSUs were awarded at no cash cost as part of his compensation for board service under the company’s 2021 Equity Incentive Plan.
The RSUs convert into Amkor common stock on a one-for-one basis. They will vest in full on the earlier of the first anniversary of the grant date or the first annual meeting of stockholders following that date. After this grant, he holds 2,613 RSUs directly.
AMKOR TECHNOLOGY, INC. reported that director Douglas A. Alexander received a grant of 2,613 restricted stock units (RSUs) on May 13, 2026 under the company’s 2021 Equity Incentive Plan. Each RSU converts into one share of common stock if it vests.
The RSUs will vest in full on the earlier of the first anniversary of the grant date or the company’s first annual meeting of stockholders following that date. The award was granted for no cash consideration, as compensation for Alexander’s service as a director, and leaves him with 2,613 RSUs outstanding after this transaction.
AMKOR TECHNOLOGY, INC. director MaryFrances McCourt reported equity compensation-related transactions. She exercised previously granted restricted stock units, receiving 9,893 shares of common stock at no cost, bringing her direct ownership to 65,811 common shares. She also received a new award of 2,613 restricted stock units that can convert into common stock on a one-for-one basis, generally vesting on the earlier of one year from the grant date or the company’s next annual stockholder meeting.
AMKOR TECHNOLOGY, INC. director Robert Randolph Morse received a grant of 2,613 time-vested restricted stock units (RSUs) on May 13, 2026 under the company’s 2021 Equity Incentive Plan. Each RSU may convert into one share of common stock and was awarded for no cash consideration, solely for his board service.
The RSUs will vest in full on the earlier of the first anniversary of the grant date or the company’s first annual meeting of stockholders following that date. Following this grant, Morse holds 2,613 RSUs directly.
Amkor Technology, Inc. granted 2,613 time-vested restricted stock units (RSUs) to director Daniel JL Liao on May 13, 2026 under its 2021 Equity Incentive Plan.
The RSUs convert one-for-one into common stock and will vest in full on the earlier of the first anniversary of the grant date or the company’s first annual stockholders’ meeting following that date. They were awarded for no cash consideration, as equity compensation for Liao’s board service, and he now directly holds 2,613 RSUs.
Amkor Technology director Winston J. Churchill reported equity compensation activity. On May 13, 2026, 2025 time-vested restricted stock units and related dividend equivalent units vested, converting into 9,893 shares of common stock, bringing his direct holdings to 28,781 shares. He also received a new grant of 2,613 restricted stock units, which can convert into common stock on a one-for-one basis and will vest in full on the earlier of the first anniversary of the grant date or the company’s first annual stockholder meeting following that date. These were awarded for his service as a director and do not reflect open-market purchases or sales.
Amkor Technology director Guillaume Marie Jean Rutten reported routine equity compensation activity. On May 13, 2026, 482 previously granted restricted stock units vested and converted into 482 shares of common stock on a one-for-one basis. The filing shows he now holds 503,040 shares of common stock directly after this conversion.
On the same date, Rutten received a new award of 2,613 restricted stock units under Amkor’s 2021 Equity Incentive Plan. These RSUs can convert into the same number of common shares, subject to vesting conditions tied to the earlier of the first anniversary of the grant date or the next annual meeting of stockholders.
Amkor Technology director Tily Gil C. reported equity compensation activity involving restricted stock units. On May 13, 2026, 9,893.0573 RSUs vested and were converted into 9,893 shares of common stock, increasing her direct holdings to 118,699 shares. A small 0.0573 RSU portion accrued as dividend equivalent units was settled in cash.
On the same date, she received a new award of 2,613 RSUs under Amkor’s 2021 Equity Incentive Plan, which may convert into the same number of common shares upon future vesting. Following these transactions, she directly holds 118,699 common shares and 2,613 unvested RSUs.
Amkor Technology director David N. Watson reported routine equity compensation activity. On May 13, 2026, previously granted restricted stock units from a May 15, 2025 award vested, and 9,893.0573 RSUs (including associated dividend equivalent units) converted into an equal number of shares of common stock. A small portion, 0.0573 of the dividend equivalent units, was settled in cash rather than shares. On the same date, Watson received a new grant of 2,613 restricted stock units under Amkor’s 2021 Equity Incentive Plan, which can convert into common stock on a one-for-one basis and will vest in full on the earlier of the first anniversary of the grant date or the next annual stockholders’ meeting. Following these transactions, Watson directly holds 130,650 shares of common stock and 2,613 RSUs.