Welcome to our dedicated page for AMKOR TECHNOLOGY SEC filings (Ticker: AMKR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
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. (AMKR) reported an insider ownership change involving trusts associated with Agnes C. Kim. On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim distributed 705,000 shares of Amkor common stock to the Agnes C. Kim Revocable Trust, a separate trust for which she is sole settlor, beneficiary, and trustee. The transaction was reported with code G, indicating a gift or similar transfer, at a stated price of $0 per share, so no cash changed hands. After this internal trust transfer, the reporting person shows 895,000 shares of Amkor common stock beneficially owned directly. The filing also notes that the reporting person disclaims beneficial ownership of the securities except to the extent of any pecuniary interest.
Amkor Technology, Inc. insider reports a large share distribution. A reporting person affiliated with AMKR disclosed a transfer of 965,000 shares of Amkor Technology common stock on 11/20/2025. The transaction was coded "G," indicating a bona fide gift or similar transfer, at a reported price of $0 per share. After this distribution, the reporting person directly beneficially owns 1,235,000 shares.
The shares were distributed to the James J. Kim 2018-1 Qualified Annuity Trust under an agreement dated 8/30/18, for which James J. Kim and Susan Y. Kim serve as co‑trustees. The reporting person states that beneficial ownership of the securities is disclaimed except to the extent of any pecuniary interest.
Amkor Technology, Inc. insider transaction: the company’s President and CEO, Guillaume Marie Jean Rutten, reported selling 10,000 shares of Amkor common stock on 11/17/2025 at a weighted average price of $31.68 per share. The sale was coded as an open market sale and was made under a pre-arranged Rule 10b5-1 trading plan adopted on June 06, 2025, which is designed to allow insiders to sell shares according to a preset schedule. Following this transaction, Rutten beneficially owned 346,699 shares of Amkor common stock directly.
Amkor Technology, Inc. executive Mark N. Rogers, EVP & General Counsel, reported an option exercise and related stock sale. On 11/17/2025, he exercised an employee stock option to acquire 20,000 shares of Amkor common stock at an exercise price of $7.40 per share and then sold 20,000 shares of common stock in an open-market transaction.
The reported sale used transaction code "S" and reflects a weighted average sale price of $31.69 per share, with individual trade prices ranging from $31.05 to $32.05. After these transactions, Rogers directly beneficially owned 23,862 shares of Amkor common stock and held 130,000 employee stock options directly. The exercised option was part of a grant originally covering 200,000 shares that vested over four years.
Amkor Technology, Inc. executive Farshad Haghighi reported multiple equity transactions on 11/14/2025 related to restricted stock units (RSUs). Several RSU awards vested early due to his retirement eligibility, and the company withheld 66, 67, 269 and 395 shares of common stock to cover associated taxes at a price of $31.68 per share. These moves are administrative in nature and do not reflect open-market buying or selling. Following the reported transactions, he directly held 8,354 shares of Amkor common stock, along with remaining RSU awards that continue to represent potential future share delivery.
Amkor Technology (AMKR) executive vice president Kevin Engel reported several small equity transactions on Form 4 related to restricted stock units (RSUs). On 11/14/2025, multiple RSU awards vested, each converting into common stock at an exercise price of $0. To cover taxes tied to his retirement eligibility status, the company withheld 30, 47, 223, and 369 shares of common stock at a price of $31.68 per share. After these transactions, Engel directly owned 11,321 shares of Amkor common stock, along with remaining RSU holdings shown across several grants. These are routine administrative transactions reflecting tax withholding on equity compensation rather than open-market buying or selling.
Amkor Technology (AMKR) insider activity: John T. Kim reported two transfers of common stock on November 4, 2025 tied to GRAT distributions. He received 806,000 shares and 40,750 shares at $0 as changes in the form of ownership from indirect (GRATs) to direct. Following these transactions, he directly owned 5,594,489 shares.
He also reports indirect interests through affiliated entities, including 39,594,980 shares by 915 Investments, LP, 19,484,809 by Sujochil, LP, and 16,710,668 by Kim Capital Partners – KCP, LLC, with beneficial ownership disclaimed except to the extent of his pecuniary interest.
Amkor Technology (AMKR) reported an insider ownership change on a Form 4. On 11/04/2025, the reporting person distributed 40,750 shares of Amkor common stock to John T. Kim, described as a mere change in the form of ownership from indirect to direct. Following the transaction, the filing shows 59,250 shares beneficially owned directly.
Amkor Technology (AMKR) reported an insider transaction on 11/04/2025. The reporting person distributed 806,000 shares of common stock to John T. Kim under transaction code G at a stated price of $0, which denotes a gift or similar transfer. The filing explains this was a mere change in the form of ownership from indirect to direct because Mr. Kim is the annuitant and sole trustee of the reporting person.
Following the transaction, the reporting person beneficially owned 1,194,000 shares directly. This entry reflects an ownership reclassification rather than an open‑market sale.
Amkor Technology (AMKR) reported that director John Liu resigned from its Board on October 28, 2025. The company stated the resignation was not due to any disagreements regarding operations, policies, or practices.
In connection with the change, the Board was reduced from eleven to ten directors. Mr. Liu will join Amkor as Executive Vice President, Corporate Development and Strategy on November 3, 2025.