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 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.
Amkor Technology director Gil C. Tily sold 15,000 shares of Common Stock in an open-market transaction. The shares were sold at a price of $77.30 per share. After this sale, Tily directly holds 108,806 Amkor shares.
Amkor Technology director Guillaume Marie Jean Rutten reported an open‑market sale of 50,000 shares of Common Stock on May 8, 2026. The weighted average sale price was $74.28 per share, with individual trades executed between $73.37 and $74.98. After these transactions, Rutten directly holds 502,558 Amkor shares, indicating he retains a substantial ownership stake in the company.
Form 144 filing reports insider dispositions totaling 30,000 shares. The filing lists two recent sales by Guillaume Rutten: 10,000 shares on 02/17/2026 for $458,927 and 20,000 shares on 02/24/2026 for $976,070. The filing also lists securities classified as Performance Shares (6,667 and 25,000) and Restricted Stock (18,333) with grant dates in 2024.
Amkor Technology director Carolin Roger Anthony reported an exercise-and-sell transaction in company stock. On May 5, 2026, he exercised options to acquire 20,000 shares of common stock at $11.71 per share, then sold 20,000 shares in open-market trades at a weighted average price of $76.24, with individual sale prices ranging from $76.11 to $76.48. After these transactions, he directly owned 94,409 shares of Amkor common stock.
Amkor Technology director Winston J. Churchill reported an open-market sale of 7,000 shares of the company’s Common Stock. The shares were sold at an average price of $76.45 per share. After this transaction, he directly holds 18,888 shares of Amkor Technology.