Every Form 4 that Amkor Technology Inc (AMKR) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow AMKR and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full AMKR filings page.
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 an insider transaction by President, CEO, and Director Guillaume Marie Jean Rutten. On 10/15/2025, he sold 10,000 shares of common stock at $30.74 per share under a pre‑arranged Rule 10b5-1 trading plan adopted on June 06, 2025.
After this sale, Rutten beneficially owns 356,699 shares, held directly. This Form 4 indicates a routine, disclosed transaction executed pursuant to a trading plan designed to provide structured selling parameters.
Amkor Technology Executive Vice President Kevin Engel reported the vesting and exercise of 8,692 Restricted Stock Units into common stock on September 30, 2025, together with a tax-withholding disposition of 3,725 shares at $28.40 per share. After these events he directly holds 11,321 shares of common stock. The RSUs stem from a 43,459-unit grant awarded on February 20, 2025 that vests in five equal quarterly installments through June 30, 2026.
Susan Y. Kim, a director and reported 10% owner of Amkor Technology, Inc. (AMKR), filed a Form 4 disclosing a disposition of 4,456,494 shares on 09/23/2025. The filing details numerous indirect holdings through entities and trusts for which she serves as trustee, general partner or manager, including 19,484,809 shares held by Sujochil, LP, 16,710,668 shares held by an LLC treated as a corporation, 4,418,610 shares held by family trusts (excluding GRATs), 3,800,000 shares held by GRATs, 3,483,000 shares held by GRATs of which she was settlor, and 3,789,479 shares indirectly owned via Sujoda Investments, LP. The filer disclaims beneficial ownership except for her pecuniary interest. The filing also reports dividend equivalent units accrued on 09/23/2025 related to time-vested RSUs granted 05/15/2025.
Douglas A. Alexander, a director of Amkor Technology, Inc. (AMKR), received dividend equivalent units that increased his restricted stock unit holdings. The Form 4 reports three accruals of dividend equivalent units (DEUs) on 09/23/2025 tied to time‑vested restricted stock units granted on 05/17/2022, 05/16/2023 and 05/15/2025. Each DEU converts into an additional RSU subject to the same vesting and terms as the underlying award. The reported incremental amounts were 24.3374, 23.7001 and 27.3648 RSUs, bringing the post‑accrual beneficial ownership counts for those grants to 9,204.4883, 8,862.7341 and 9,854.8917 shares of common stock, respectively. These were recorded as acquisitions at $0 price per share because they represent dividend equivalents rather than purchases.
Roger A. Carolin, a director of Amkor Technology, Inc. (AMKR), received dividend equivalent units that increased his restricted stock unit holdings. On 09/23/2025 DEUs were accrued in connection with dividends paid on time-vested RSUs granted on 05/16/2023 and 05/15/2025. The filing reports the accruals as acquisitions of 23.7001 RSUs (related to the 2023 grant) and 27.3648 RSUs (related to the 2025 grant), both with $0 price. After these accruals, the amounts shown as beneficially owned following the transactions are 8,862.7341 and 9,854.8917 shares, respectively. The Form 4 is signed by an attorney-in-fact on behalf of the reporting person and reflects routine equity accruals tied to dividend payments.
Winston J. Churchill, a director of Amkor Technology, Inc. (AMKR), reported on Form 4 that on 09/23/2025 he received 27.3648 restricted stock units as dividend equivalent units related to time‑vested RSUs granted May 15, 2025.
The DEUs were recorded at a price of $0, and following this accrual the reporting person beneficially owns 9,854.8917 shares of common stock on a direct basis. The Form 4 was signed by Mark N. Rogers, attorney‑in‑fact, on 09/25/2025. The filing shows Churchill’s reporting address in Boca Raton, FL, and lists his relationship to the issuer as a director.
AMKOR TECHNOLOGY, INC. (AMKR) reporting person Gil C. Tily, identified as a director, received 27.3648 dividend-equivalent units (DEUs) credited on 09/23/2025 in respect of time-vested restricted stock units (RSUs) originally granted on May 15, 2025. Each DEU represents an additional RSU subject to the same terms as the underlying RSU.
The DEUs were issued with a reported price of $0 and, following the transaction, the reporting person beneficially owns 9,854.8917 shares of common stock in a direct ownership form. The Form 4 was signed via attorney-in-fact on 09/25/2025.
AMKOR TECHNOLOGY, INC. (AMKR) director David N. Watson received 27.3648 restricted stock units (RSUs) credited as dividend equivalent units (DEUs) tied to time‑vested RSUs, recorded as acquired on 09/23/2025 at a $0 price. The DEUs mirror the original RSU grant terms and increased Mr. Watson's direct beneficial ownership to 9,854.8917 shares. The transaction was reported by an attorney‑in‑fact on behalf of the reporting person. This filing documents a routine equity accrual tied to a dividend on the company's RSUs rather than an open‑market purchase or sale.
Robert R. Morse, a director of Amkor Technology, Inc. (AMKR), received dividend equivalent units that converted into additional restricted stock units on 09/23/2025. The filing reports two separate DEU accruals tied to previously granted time‑vested RSUs, resulting in acquisitions of 23.7001 and 27.3648 underlying shares respectively at a reported price of $0 per share. After these accruals, the reporting person beneficially owned 8,862.7341 and 9,854.8917 shares associated with those grants. The DEUs follow the same vesting provisions as the original RSU awards.
MaryFrances McCourt, a director of Amkor Technology, Inc. (AMKR), reported accruals of dividend equivalent units that converted into additional restricted stock units on 09/23/2025. Two separate DEU accruals were recorded: 23.7001 RSUs related to a grant originally dated 05/16/2023, and 27.3648 RSUs related to a grant originally dated 05/15/2025. Each accrued unit represents an additional RSU subject to the same terms as its underlying award. Both acquisitions were recorded at a $0 price and increased the reporting person’s beneficial holdings to 8,862.7341 and 9,854.8917 shares respectively. The Form 4 was signed by an attorney-in-fact, Mark N. Rogers, on 09/25/2025.
John D. Liu, a director of Amkor Technology, Inc. (AMKR), reported a non‑derivative acquisition on 09/23/2025 of 27.3648 restricted stock units (RSUs) recorded as dividend equivalent units (DEUs) related to time‑vested RSUs granted on May 15, 2025. The DEUs accrued upon a dividend payment and carry the same terms as the underlying RSUs. The reported price for the DEUs was $0 and the filing shows 9,854.8917 shares beneficially owned following the transaction. The Form 4 was signed by an attorney‑in‑fact on 09/25/2025.
Daniel J.L. Liao, a director of Amkor Technology (AMKR), recorded a Form 4 disclosing dividend equivalent units credited on time-vested restricted stock units. The filing shows that on 09/23/2025 the reporting person received 27.3648 restricted stock units (RSUs) as dividend equivalent units (DEUs) related to RSUs granted on 05/15/2025. The DEUs carry the same terms as the underlying RSUs and were entered at a price of $0. After the accrual the reporting person beneficially owned 9,854.8917 shares directly. The Form 4 was signed by an attorney-in-fact on behalf of Mr. Liao on 09/25/2025.
Guillaume M. J. Rutten, President and CEO and director of Amkor Technology (AMKR), reported a sale of 10,000 shares of AMKR common stock on 09/23/2025 at $30 per share under a pre-existing Rule 10b5-1 trading plan adopted on 06/06/2025. After the transaction, the reporting person beneficially owned 358,007 shares. The Form 4 was signed by an attorney-in-fact and indicates the sale was executed pursuant to the written plan, which provides an affirmative defense under Rule 10b5-1. No derivative transactions or other changes in ownership were reported on this filing.