STOCK TITAN

Amkor Technology Inc Form 4 Filings

AMKR NASDAQ

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.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director Guillaume Marie Jean Rutten reported equity compensation activity, including a new grant of 482 restricted stock units and the vesting of 8,692 restricted stock units into common shares. These transactions are awards and exercises, not open-market buying or selling.

Following the conversion of 8,692 restricted stock units into common stock, Rutten directly holds 552,558 shares of Amkor common stock. The restricted stock units were granted under Amkor’s 2021 Equity Incentive Plan as compensation for board service and will vest based on specified dates and service conditions.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director Robert Randolph Morse reported routine equity compensation adjustments tied to dividends. On March 31, 2026, he acquired 15.7246 dividend equivalent units and 18.1563 dividend equivalent units, each representing additional restricted stock units linked to prior time-vested RSU grants.

These dividend equivalent units convert into the same number of common shares when the underlying RSUs vest, under the same terms as the original awards. After these grants, Morse directly holds 9,893.0573 restricted stock units in total, reflecting ongoing stock-based compensation rather than any market purchase or sale.

Rhea-AI Summary

Amkor Technology director MaryFrances McCourt received additional restricted stock units through dividend equivalents. On March 31, 2026, she was granted 15.7246 RSUs and 18.1563 RSUs as dividend equivalent units tied to prior RSU awards from May 16, 2023 and May 15, 2025.

Each dividend equivalent unit converts into one additional RSU under the same terms as the original grants. Following these accruals, she directly holds 9,893.0573 restricted stock units linked to Amkor common stock.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director and 10% owner group member Susan Y. Kim reported an acquisition of restricted stock units tied to a dividend. She received 18.1563 dividend equivalent restricted stock units on March 31, 2026, increasing her restricted stock unit holdings to 9,893.0573 units of common stock.

The filing also lists substantial common stock holdings reported as direct and indirect interests through various family trusts, grantor retained annuity trusts, and limited partnerships, with beneficial ownership treated based on her pecuniary interest in those entities.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director Daniel JL Liao reported an automatic acquisition of 18.1563 restricted stock units on dividend equivalent terms. These dividend equivalent units were accrued on March 31, 2026 in connection with previously granted time-vested RSUs from May 15, 2025.

Each dividend equivalent unit represents an additional RSU that is subject to the same vesting and other provisions as the original RSU grant. Following this accrual, Liao’s direct holdings in RSUs tied to common stock total 9,893.0573 units, reflecting a small, compensation-related adjustment rather than an open-market trade.

Rhea-AI Summary

Amkor Technology CFO Megan Faust exercised restricted stock units into common stock as part of her equity compensation. On March 31, 2026, 8,692 RSUs converted into 8,692 shares of common stock at a stated price of $0.00 per share. Of these, 3,725 shares, valued at $45.03 per share, were withheld by Amkor to cover her tax obligations, with the company paying the taxes on her behalf. After these transactions, she directly owned 134,138 shares of Amkor common stock. The vested RSUs relate to a 43,459-unit grant awarded on February 20, 2025, scheduled to vest in five equal quarterly installments from June 30, 2025 through June 30, 2026.

Rhea-AI Summary

Amkor Technology, Inc. President and CEO Kevin K. Engel exercised restricted stock units and had shares withheld for taxes. On March 31, 2026, 8,692 restricted stock units converted into 8,692 shares of common stock. Of these, 3,725 shares were withheld by Amkor at $45.03 per share to cover Engel's tax obligations, with taxes paid by the company. After these compensation-related transactions, Engel directly held 7,920 shares of Amkor common stock. The RSUs were part of a 43,459-unit grant made on February 20, 2025 under Amkor's 2021 Equity Incentive Plan, vesting in five equal quarterly installments through June 30, 2026.

Rhea-AI Summary

Amkor Technology director Winston J. Churchill received additional stock-based compensation through dividend equivalents. On the payment of a dividend on March 31, 2026, he was credited with 18.1563 restricted stock units (RSUs) as dividend equivalent units tied to an existing time-vested RSU award granted on May 15, 2025. Each dividend equivalent unit converts into one additional RSU under the same vesting terms as the original grant. Following this accrual, Churchill holds a total of 9,893.0573 RSUs directly, reflecting routine, non-cash compensation rather than an open-market share purchase.

Rhea-AI Summary

Amkor Technology director Roger Anthony Carolin reported routine equity compensation adjustments tied to dividends. On March 31, 2026, he acquired 15.7246 restricted stock units as dividend equivalent units on time-vested RSUs granted on May 16, 2023, and 18.1563 units on RSUs granted on May 15, 2025. After these grants, his directly held RSU-based interest increased to 9,893.0573 units, all representing future rights to Amkor common stock, subject to the same vesting terms as the original RSU awards.

Rhea-AI Summary

Amkor Technology director Douglas A. Alexander received additional restricted stock units through dividend credits rather than market purchases. On March 31, 2026, he was granted three small blocks of dividend equivalent units tied to earlier RSU awards from 2022, 2023, and 2025. Each dividend equivalent unit converts into an additional RSU subject to the same vesting and other conditions as the original grants, modestly increasing his equity-based compensation while leaving cash holdings unchanged.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers exercised stock options and sold shares in a planned transaction. He exercised options for 5,000 shares of common stock at $7.40 per share and on the same day sold 5,000 shares at $44.54 per share in an open-market trade. The filing states the sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. Following these transactions, Rogers directly holds 38,904 shares of common stock.

Rhea-AI Summary

Buntyn Cherie reported acquisition or exercise transactions in this Form 4 filing.

Amkor Technology reported that Chief Accounting Officer Cherie Buntyn received a grant of 799 restricted stock units of Amkor common stock. These RSUs were awarded for no cash consideration as part of her compensation for serving as an officer.

The 799 RSUs will vest in three equal annual installments, beginning on the first anniversary of the March 12, 2026 grant date, with all units fully vested on the third anniversary. Following this grant, Buntyn holds 799 RSUs directly.

Rhea-AI Summary

Amkor Technology President and CEO Kevin K. Engel reported a mix of equity award activity and share sales. On February 24, 2026, he exercised 910 restricted stock units into 910 shares of common stock at $0.00 per share. To cover tax obligations from this vesting, 372 shares were withheld by Amkor at a reported price of $48.53 per share, with the company paying the related taxes on his behalf. Engel also executed an open-market sale of 12,500 shares of common stock at a reported price of $48.75 per share, with actual trades occurring between $48.73 and $48.81. After these transactions, he directly owned 2,953 shares of Amkor common stock.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director Guillaume Marie Jean Rutten exercised 10,748 restricted stock units on February 24, 2026, receiving 10,748 shares of common stock at no cash cost as part of prior equity awards.

On the same date, he sold 20,000 common shares in open-market transactions at a weighted average price of $48.80 per share, with individual prices ranging from $48.80 to $48.86. After these transactions, he directly owned 543,866 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology CFO Megan Faust reported routine equity compensation activity involving restricted stock units. On February 24, 2026, 3,493 RSUs were exercised and converted into 3,493 shares of common stock at $0.00 per share, reflecting vesting of prior grants.

To cover tax withholding obligations from this vesting, 1,497 common shares were automatically disposed of at $48.53 per share, with Amkor paying the related taxes on her behalf. After these transactions, Faust directly owned 129,171 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology EVP & General Counsel Mark N. Rogers exercised 1,880 restricted stock units into common stock on February 24, 2026, at no cash price under Amkor’s equity plan. To cover tax withholding on this vesting, 806 common shares were withheld at $48.53 per share, leaving him with 38,904 directly owned common shares.

Rhea-AI Summary

Amkor Technology director David N. Watson exercised stock options for 20,000 shares of common stock on February 25, 2026, converting a Director Stock Option granted in 2016 and fully vested in 2017. A portion of the resulting shares (2,223) was surrendered to cover tax obligations, with no shares bought or sold in the open market.

Rhea-AI Summary

Amkor Technology Executive Vice President Farshad Haghighi reported a net sale of common stock alongside RSU vesting activity. On February 24, 2026, 1,814 restricted stock units were converted into the same number of common shares at $0.00 per share, and 815 common shares were disposed of at $48.53 to cover tax withholding obligations related to the RSU vesting.

On February 25, 2026, Haghighi executed an open-market sale of 15,624 common shares at an average price of $50.50 per share. Following these transactions, he directly owned 8,354 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology, Inc. President and CEO Kevin K. Engel reported multiple equity award transactions dated February 20, 2026. He acquired shares of common stock through the exercise and conversion of restricted stock units granted in 2024 and 2025 under Amkor’s 2021 Equity Incentive Plan. A portion of the resulting common shares, at a value of $47.94 per share, was withheld and disposed of to cover his tax withholding obligations related to the vesting. According to the disclosure, Amkor will pay these taxes on his behalf, so the dispositions reflect tax-withholding rather than open-market sales.

Rhea-AI Summary

Amkor Technology CFO Megan Faust reported RSU vesting and related share transactions. On February 20, 2026, restricted stock units converted into common stock in multiple exercises, including 16,805 and 18,106 RSUs. The resulting common shares increased her direct ownership.

To cover tax withholding obligations tied to these vestings, the company withheld 7,201 and 7,759 shares of common stock at a price of $47.94 per share, described as tax-withholding dispositions rather than open-market sales. After these transactions, Faust continued to hold common stock directly.

Rhea-AI Summary

Amkor Technology EVP & General Counsel Mark N. Rogers reported the vesting and conversion of restricted stock units into common stock, along with related tax-withholding transactions, on February 20, 2026. He acquired 7,422 and 8,690 shares of common stock upon RSU vesting, while 3,181 and 3,724 shares were withheld at $47.94 per share to cover tax obligations. The RSUs were granted on February 20, 2024 and February 20, 2025 and vest in three equal annual installments. Following these transactions, Rogers directly owned 37,830 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology director Guillaume Rutten reported equity compensation activity involving restricted stock units and common shares. On February 20, 2026, he exercised time-vested RSUs granted under Amkor’s Equity Incentive Plan from February 20, 2024 and February 20, 2025, converting them into common stock at no cash cost. The RSUs were awarded solely in exchange for his service as a company service provider and vest over three years under predefined schedules, resulting in the acquisition of blocks of common shares that he now holds directly.

Rhea-AI Summary

Amkor Technology Executive Vice President Farshad Haghighi reported RSU vesting and related share withholdings. On February 20, 2026, he acquired common stock through the exercise or conversion of restricted stock units granted under Amkor's 2021 Equity Incentive Plan, tied to awards from February 20, 2024 and February 20, 2025.

To cover tax withholding obligations from these vestings, Amkor withheld shares of common stock at a value of $47.94 per share rather than using cash. Following these transactions, Haghighi directly owned 22,979 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology CFO Megan Faust reported multiple equity-related transactions on February 18, 2026. She acquired 4,538 shares of common stock and 9,325 shares of common stock upon vesting of performance stock units that were tied to a basic earnings per share goal for the period from January 1, 2025 through December 31, 2025.

To cover related tax obligations, 1,945 shares and 3,996 shares of common stock were withheld by Amkor at a price of $46.74 per share, as a tax-withholding disposition rather than an open-market sale. Faust also received a new grant of 26,743 restricted stock units, which were awarded for her service as an officer and will vest in three equal annual installments beginning on the first anniversary of the grant date.

Rhea-AI Summary

Amkor Technology Executive Vice President Farshad Haghighi reported multiple equity compensation transactions. He received 18,185 time-vested restricted stock units on February 18, 2026, granted at no cash cost in recognition of his service. These RSUs vest in three equal annual installments beginning on the first anniversary of the grant date, with full vesting on the third anniversary.

On the same date, 2,003 and 5,594 common shares vested from performance stock units that were originally granted in 2024 and 2025. These awards vested after Amkor met a basic earnings-per-share performance goal over a one-year period from January 1, 2025 to December 31, 2025. To cover related tax obligations at a price of $46.74 per share, 1,038 and 2,621 shares of common stock were withheld and delivered back to the company, reducing out-of-pocket taxes for the executive while keeping these dispositions clearly tied to tax withholding rather than open-market sales.

Rhea-AI Summary

Rutten Guillaume Marie Jean reported acquisition or exercise transactions in this Form 4 filing.

Amkor Technology director Guillaume Marie Jean Rutten reported the vesting of performance-based stock awards, increasing his direct common share holdings. On February 18, 2026, 10,891 shares of common stock vested from performance-vested restricted stock units granted on February 20, 2024, and 30,587 shares vested from units granted on February 20, 2025.

Both awards were granted under Amkor's Equity Incentive Plan and vested based on achieving a basic earnings per share performance goal over a one-year performance period from January 1, 2025 to December 31, 2025. Following these vestings, Rutten directly owns 380,789 shares of Amkor common stock.

Rhea-AI Summary

Amkor Technology President and CEO Kevin K. Engel reported equity compensation activity centered on restricted stock units and performance units. On February 18, 2026, he acquired 53,487 and 21,394 restricted stock units, both granted at no cash cost under Amkor’s equity incentive plan.

On the same date, 1,777 and 5,594 shares of common stock vested from performance-based awards tied to a basic earnings per share goal over a one-year period beginning January 1, 2025 and ending December 31, 2025. To cover related tax withholding, 814 and 2,398 common shares were disposed of at $46.74 per share, with the company paying the taxes on Engel’s behalf.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers reported multiple equity-related transactions on February 18, 2026. He received 14,976 restricted stock units granted for his service, which will vest in three equal annual installments starting on the first anniversary of the grant date.

On the same date, 2,003 shares and 4,475 shares of common stock vested from performance-vested restricted stock units granted in 2024 and 2025. These PSUs vested based on achieving a basic earnings per share performance goal over a one-year period from January 1, 2025 to December 31, 2025. The company withheld 859 shares and 1,918 shares to cover tax obligations, and will pay the related taxes on his behalf.

Rhea-AI Summary

AMKOR TECHNOLOGY, INC. director Guillaume Rutten reported mixed insider activity involving both an RSU vesting and a share sale. On February 17, 2026, he executed an open-market sale of 10,000 shares of common stock at a weighted average price of $45.89 under a pre-arranged Rule 10b5-1 trading plan adopted on June 06, 2025, leaving him with 339,311 common shares directly held. On February 16, 2026, he exercised 13,920 restricted stock units granted on February 16, 2023 into an equal number of common shares at no cost, tied to time-based vesting for his service, and reported 13,919 RSUs still outstanding after the transaction.

Rhea-AI Summary

Amkor Technology President and CEO Kevin K. Engel reported multiple equity transactions. He sold 5,316 shares of common stock in an open-market transaction at $46.03 per share. He also acquired 1,345 shares of common stock through the exercise of restricted stock units, and 559 shares of common stock were withheld to cover tax obligations upon RSU vesting, with the issuer paying those taxes on his behalf.

Rhea-AI Summary

Amkor Technology CFO Megan Faust reported RSU vesting and related tax withholding transactions. On February 16, 2026, 4,176 restricted stock units were exercised into 4,176 shares of common stock at $0.00 per share, increasing her directly held common stock to 101,214 shares.

On the same date, 1,912 shares of common stock at $47.48 per share were withheld by Amkor to cover her tax obligations associated with vesting, reducing her direct holdings to 99,302 shares after settlement. These RSUs come from a 16,703-unit grant awarded on February 16, 2023 that vests in four equal annual installments beginning on the first anniversary of the grant date.

Rhea-AI Summary

Amkor Technology EVP & General Counsel Mark N. Rogers reported multiple equity transactions in company stock. On February 17, 2026, he exercised employee stock options to acquire 5,000 shares of common stock at $7.40 per share and then sold 5,000 shares of common stock at $46.92 per share in an open-market transaction executed under a pre-established Rule 10b5-1 trading plan.

On February 16, 2026, 1,856 restricted stock units vested and converted into common stock, with 796 shares withheld to cover tax obligations, which the company will pay on his behalf. After these transactions, Rogers directly held 24,922 shares of common stock and 100,000 employee stock options.

Rhea-AI Summary

Amkor Technology Executive Vice President Farshad Haghighi reported equity award activity involving restricted stock units and common shares. On February 16, 2026, 1,789 restricted stock units were exercised or converted and settled into 1,789 shares of common stock at no cash cost to him.

On the same date, 816 common shares were disposed of in a tax-withholding transaction at $47.48 per share, with the shares withheld by Amkor to cover his tax obligations, and the company paying those taxes on his behalf. After these transactions, he held 9,327 common shares directly. Footnotes indicate the original grant was 7,423 RSUs vesting in four equal annual installments beginning February 16, 2024.

Rhea-AI Summary

Amkor Technology’s major shareholder group reported a large secondary sale of shares. On February 12, 2026, 915 Investments, LP, an entity associated with 10% owner John T. Kim, sold 10,000,000 shares of Amkor common stock at $48.49 per share in an underwritten secondary offering.

After the sale, Form 4 shows 29,594,980 Amkor shares held indirectly through 915 Investments, LP, plus additional direct and indirect holdings through GRATs, family trusts, Sujochil, LP, Kim Capital Partners – KCP, LLC, and Sujoda Investments, LP. Kim treats these interests as having a pecuniary stake but disclaims full beneficial ownership beyond that interest.

Rhea-AI Summary

915 Investments, LP, a member of a 10% owner group in Amkor Technology, reported selling 10,000,000 shares of Amkor common stock on February 12, 2026. The shares were sold at $48.49 each in an underwritten secondary offering.

After this transaction, 915 Investments, LP directly held 29,594,980 Amkor shares. The filing notes that John T. Kim is the general partner of 915 Investments, LP, and states that the reporting person does not admit beneficial ownership of securities owned by other members of the group.

Rhea-AI Summary

Amkor Technology director Guillaume Marie Jean Rutten reported a planned stock sale. On January 15, 2026, the reporting person sold 10,000 shares of Amkor Technology, Inc. common stock at a weighted average price of $53.14 per share in an open-market transaction coded as a sale. The transaction was carried out under a pre-arranged Rule 10b5-1 trading plan adopted on June 06, 2025. Following this sale, the reporting person directly owned 335,391 shares of Amkor Technology common stock.

Rhea-AI Summary

Amkor Technology, Inc. executive Mark N. Rogers reported a routine equity transaction involving stock options and common shares. On January 16, 2026, the EVP & General Counsel exercised 5,000 employee stock options at an exercise price of $7.4 per share, receiving 5,000 shares of common stock. On the same date, he sold 5,000 shares of common stock at a price of $49.28 per share pursuant to a Rule 10b5-1 trading plan adopted on August 1, 2025. Following these transactions, he beneficially owned 23,862 shares of common stock directly and 105,000 employee stock options.

Rhea-AI Summary

Amkor Technology director Winston J. Churchill reported exercising stock options and selling shares of the company. On 12/15/2025, he exercised options to buy 5,000 shares of common stock at an exercise price of $19.39 per share, then sold 5,000 shares of common stock at a price of $44.29 per share on the same date. After these transactions, he directly owned 25,888 shares of Amkor common stock. He also continued to hold 15,000 director stock options with a $19.39 exercise price, expiring on 05/18/2031. The option was originally granted on 05/18/2021 for 20,000 shares and fully vested on 05/17/2022.

Rhea-AI Summary

Amkor Technology, Inc. reports that its President and CEO, who is also a Director, executed a planned stock sale. On 12/15/2025, the reporting person sold 10,000 shares of Amkor common stock at a weighted average price of $44.80 per share, as disclosed in Table I. This transaction was carried out under a Rule 10b5-1 trading plan adopted on June 6, 2025, meaning the sale followed a pre-established schedule rather than being made at the insider’s discretion at the time of sale.

After this transaction, the reporting person beneficially owns 336,699 shares of Amkor common stock in direct form. The filing notes that the actual sales occurred in multiple trades at prices ranging from $44.37 to $45.18 per share, and the insider has undertaken to provide detailed breakdowns of the share amounts at each price upon request.

Rhea-AI Summary

Amkor Technology executive Mark N. Rogers, EVP & General Counsel, reported an option exercise and share sale. On 12/16/2025 he exercised employee stock options for 20,000 shares of common stock at an exercise price of $7.40 per share, increasing his directly held shares before the sale.

That same day, he sold 20,000 shares of Amkor common stock at a weighted average price of $42.95 per share, in multiple trades between $42.15 and $43.65, under a Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly owned 23,862 shares of common stock and 110,000 stock options, part of an original 200,000-share option grant from June 10, 2019 that vested over four years.

Rhea-AI Summary

Amkor Technology director MaryFrances McCourt exercised a stock option to acquire 20,000 shares of Common Stock at $19.39 per share and, on December 12, 2025, sold 20,000 shares at a weighted-average price of $46.02, with trades between $45.98 and $46.09. She continues to hold 55,918 shares directly.

Rhea-AI Summary

Amkor Technology Executive Vice President Kevin Engel reported selling 11,000 shares of common stock on 12/12/2025 at a weighted average price of $46.21 per share, with individual trades executed between $45.92 and $46.52. After these sales, he directly beneficially owns 349 shares of Amkor common stock.

A footnote explains that a filing on February 21, 2025 overreported the number of shares withheld to cover tax obligations by 28 shares, which had caused his reported holdings to be understated by that amount. The current ownership figure reflects this 28-share correction.

Rhea-AI Summary

Amkor Technology director Gil C. Tily reported selling 20,000 shares of common stock on December 12, 2025 at a weighted average price of $46.44 per share. After this transaction, he directly beneficially owns 123,806 Amkor shares. The sale was executed through multiple trades at prices ranging from $45.91 to $46.83, and the reporting person has committed to provide details of the individual trade prices upon request.

Rhea-AI Summary

Amkor Technology, Inc. disclosed that, on December 4, 2025, a grantor retained annuity trust named for the reporting person distributed 758,000 shares of Amkor common stock to that person as a gift at $0. Because the reporting person was already the annuitant and sole trustee of the trust, this was described as a mere change in the form of ownership from indirect to direct.

After the transaction, the reporting person directly held 6,090,494 shares of Amkor common stock and continued to hold additional shares indirectly through various trusts and entities, including Sujochil, LP and Sujoda Investments, LP. The reporting person states that beneficial ownership of these securities is disclaimed except to the extent of her pecuniary interest.

Rhea-AI Summary

Amkor Technology (AMKR) director and 10% owner Susan Y. Kim reported several internal trust-related movements of Amkor common stock on November 20, 2025, all at a reported price of $0 per share. A 2024 Grantor Retained Annuity Trust (GRAT) for Susan Y. Kim distributed 876,000 shares to her directly, changing her holdings from indirect to direct ownership. Separate 2024 GRATs for James J. Kim and Agnes C. Kim distributed 965,000 and 705,000 shares, respectively, to other family trusts where she serves as trustee or co-trustee.

After these transactions, Susan Y. Kim reports substantial indirect beneficial ownership through multiple vehicles, including 3,453,610 shares held by family trusts (excluding GRATs), 3,800,000 shares held by certain GRATs, 19,484,809 shares held by Sujochil, LP, 16,710,668 shares held by Kim Capital Partners - KCP, LLC, and 3,789,479 shares held by Sujoda Investments, LP. She disclaims beneficial ownership beyond her pecuniary interest in these holdings.

Rhea-AI Summary

Amkor Technology, Inc. insider James J. Kim reported a trust-to-trust transfer involving 965,000 shares of Amkor common stock. The Form 4 shows that on 11/21/2025, 965,000 shares were moved as a gift or similar transfer from the 2024 Grantor Retained Annuity Trust of James J. Kim 8/5/2024 to the James J. Kim 2018-1 Qualified Annuity Trust U/A dated 8/30/18, where he and Susan Y. Kim serve as co‑trustees.

After the transaction, 965,000 shares are reported as indirectly owned through trusts, with additional indirect holdings including shares held by his spouse and several family trusts. One disclosure notes that trusts for his immediate family members own 9,786,032 shares of Amkor common stock, and a related limited liability company holds 164,678 shares. Kim formally disclaims beneficial ownership beyond his pecuniary interest in these positions.

Rhea-AI Summary

Amkor Technology, Inc. (AMKR) reported an insider ownership change involving 876,000 shares of common stock. On November 20, 2025, a reporting person that is a member of a 10% owner group distributed 876,000 shares of Amkor common stock to Susan Y. Kim. She is the annuitant and sole trustee of the reporting person, so this movement is described as a mere change in the form of ownership from indirect to direct. The transaction was coded as "G" with a price of $0, and following the distribution, 1,124,000 shares were reported as beneficially owned on a direct basis.

Rhea-AI Summary

Amkor Technology, Inc. (AMKR) insider Agnes C. Kim reported an internal trust transfer of company shares. On November 20, 2025, the 2024 Grantor Retained Annuity Trust of Agnes C. Kim 8/5/2024 distributed 705,000 shares of common stock of Amkor Technology, Inc. to the Agnes C. Kim Revocable Trust, where she is the settlor, sole trustee, and sole beneficiary. The transaction was reported at a price of $0 per share and coded as a change in form of ownership.

Following this distribution, 705,000 shares are shown as indirectly held through trusts. The form also notes 12,290,281 shares of common stock indirectly owned by the reporting person’s spouse, James J. Kim. Agnes C. Kim formally disclaims beneficial ownership of the spouse-held shares except to the extent of any pecuniary interest.

Rhea-AI Summary

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.

Rhea-AI Summary

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.