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. (AMKR) reported that its Chief Financial Officer, Megan Faust, sold 1,000 shares of common stock on September 8, 2026 in an open-market or private transaction at $49.05 per share. Following this sale, she held 134,105 shares directly. The sale was effected under a Rule 10b5-1 trading plan adopted by the reporting person.
AMKOR TECHNOLOGY, INC. (AMKR) insider Mark N. Rogers, EVP & General Counsel, reported an option exercise and related sale. On August 17, 2026, he exercised 5,000 stock options at $7.40 per share into 5,000 shares of common stock, then sold 5,000 shares at $59.78 per share under a Rule 10b5-1 trading plan adopted on August 1, 2025. Following the option transaction, he held 70,000 stock options from this grant, which originally covered 200,000 shares and vested over four years.
Amkor Technology, Inc. CFO Megan Faust reported the sale of 1,000 shares of common stock on August 11, 2026 at $54.45 per share. Following this transaction, she directly holds 135,105 shares. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on February 17, 2026.
Amkor Technology, Inc. director Douglas A. Alexander exercised stock options and sold shares on August 7, 2026. He exercised a Director Stock Option to acquire 5,000 shares of common stock at an exercise price of $8.51 per share, then sold 5,000 shares of common stock at $55.81 per share in a sale described as an open market or private transaction. The option exercised was part of a grant covering 20,000 shares that vested in full on May 1, 2019. The sale was effected pursuant to a Rule 10b5-1 trading plan adopted on May 8, 2026.
Amkor Technology, Inc. director Guillaume Marie Jean Rutten reported selling a total of 50,000 shares of Common Stock in two open market or private transactions on August 5 and 6, 2026. The weighted average prices were $55.35 and $54.50 per share, with individual trades executed within disclosed price ranges. The sales were reported as direct ownership transactions and were not indicated as made under a Rule 10b5-1 trading plan.
Amkor Technology, Inc. director Winston J Churchill reported a bona fide gift transfer of 100 shares of Common Stock on 2026-07-30. The gift involved no cash consideration, and he now directly holds 28,681 shares. The transaction was not made under a Rule 10b5-1 trading plan.
Amkor Technology, Inc. reported that President and CEO Kevin K. Engel sold 3,221 shares of common stock on July 30, 2026 at $47.00 per share in a sale described as an open market or private transaction. After this trade, he directly holds 9,666 shares of Amkor common stock.
Amkor Technology, Inc. reporting person Agnes C. Kim reported that on July 20, 2026, her spouse exercised stock options to acquire 200,000 and 250,000 shares of Amkor common stock at exercise prices of $9.86 and $9.48 per share, respectively. These shares are held indirectly through her spouse, and she disclaims beneficial ownership except for any pecuniary interest. After these transactions, she reports holding 0 shares of Amkor common stock directly.
James J. Kim, a member of Amkor Technology’s 10% owner group, exercised stock options for 450,000 shares of common stock on July 20, 2026, at exercise prices of $9.86 and $9.48. These shares are held alongside substantial indirect family-trust holdings, for which he disclaims beneficial ownership beyond his pecuniary interest.
Amkor Technology executive Mark N. Rogers, EVP & General Counsel, reported exercising 5,000 stock options at $7.40 per share and selling 5,000 common shares at $65.12 on July 16, 2026. The sale was effected under a Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions he directly holds 38,904 common shares and 75,000 stock options from a grant to acquire 200,000 shares that expires on June 10, 2029.
Amkor Technology CFO Megan Faust reported an open-market sale of 1,000 shares of common stock on July 14, 2026 at $69.91 per share. The transaction was executed under a Rule 10b5-1 trading plan. After the sale, Faust directly holds 136,105 shares of Amkor stock.
Amkor Technology, Inc. President and CEO Kevin K. Engel reported routine equity compensation activity involving restricted stock units and common stock. He exercised 8,692 restricted stock units into common stock, reflecting the conversion of previously granted equity awards into shares.
In connection with this vesting event, 3,725 common shares were withheld by Amkor Technology to satisfy Engel’s tax withholding obligations, with the company paying these taxes on his behalf. The underlying RSU grant covered 43,459 units awarded on February 20, 2025, which vested in five equal quarterly installments and was fully vested on June 30, 2026.
Amkor Technology CFO Megan Faust reported routine equity compensation activity involving restricted stock units. On June 30, 2026, 8,692 restricted stock units converted into shares of Amkor common stock, reflecting previously granted awards vesting under the company’s 2021 Equity Incentive Plan.
On the same date, 3,725 shares of common stock were withheld by Amkor to cover Faust’s tax withholding obligations related to this vesting. The company will remit these taxes on her behalf. These transactions were not open‑market purchases or sales, but standard equity award vesting and tax settlement events.
Amkor Technology director Guillaume Rutten exercised restricted stock units into common stock as part of his equity compensation. On June 30, 2026, he acquired 8,692 shares of common stock through the conversion of 8,692 restricted stock units. Following this transaction, he directly owned 511,732 common shares. The restricted stock units came from a 43,459-unit, time-vested grant awarded on February 20, 2025 that vested in five equal quarterly installments through June 30, 2026.
KIM SUSAN Y reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director and 10% owner group member Susan Y. Kim reported updated holdings and a small equity award. The filing shows she received 2.5166 dividend equivalent units as additional restricted stock units, bringing her total RSUs to 2615.5166, all tied to Amkor common stock.
The report also details large indirect holdings through family trusts, grantor retained annuity trusts, and partnerships such as Sujochil, LP and Sujoda Investments, LP. She is treated as having a pecuniary interest in these Amkor shares but disclaims beneficial ownership beyond that pecuniary interest.
AMKOR TECHNOLOGY, INC. director David N. Watson reported an acquisition of additional equity-based compensation tied to existing awards. On June 23, 2026, he received 2.5166 dividend equivalent units, which are additional restricted stock units linked to a dividend paid on that date.
These dividend equivalent units correspond to previously granted time-vested restricted stock units awarded on May 13, 2026 and convert into the same number of common shares when vested. After this grant, Watson holds a total of 2,615.5166 restricted stock units directly.
AMKOR TECHNOLOGY, INC. director Gil C. Tily reported an automatic equity compensation adjustment. He acquired 2.5166 dividend equivalent restricted stock units (RSUs) on June 23, 2026, tied to a cash dividend and existing time-vested RSUs granted on May 13, 2026, bringing his RSU holdings to 2,615.5166 units.
Rutten Guillaume Marie Jean reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director Guillaume Marie Jean Rutten reported a small equity-based compensation adjustment. He received a grant of 2.5166 restricted stock units as dividend equivalent units that accrued when a dividend was paid on June 23, 2026 on his existing time-vested RSUs granted on May 13, 2026. After this accrual, his reported holdings in these restricted stock units increased to 2615.5166 units, reflecting routine compensation mechanics rather than an open-market transaction.
Morse Robert Randolph reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director Robert Randolph Morse reported awards of additional restricted stock units on June 23, 2026. These awards are dividend equivalent units that accrued when the company paid a dividend on existing time-vested RSU grants from 2023, 2025, and 2026. Each dividend equivalent unit is treated as an extra RSU under the same vesting and other terms as the original grants, so this filing reflects routine equity-based compensation rather than any open-market buying or selling of AMKR shares.
AMKOR TECHNOLOGY, INC. director MaryFrances McCourt reported additional stock-based compensation in the form of dividend equivalent units on her restricted stock units. On June 23, 2026 she was credited 2.5166 RSUs tied to a May 16, 2023 grant and 8.1651 RSUs tied to a May 13, 2026 grant, each on a one-for-one basis with Amkor common stock. These credits increased her respective RSU balances to 2,615.5166 units and 8,903.9532 units. The transactions are awards, not open‑market purchases or sales, and involved no cash exercise price.
Amkor Technology director Daniel JL Liao received additional restricted stock units as part of his equity compensation. On June 23, 2026, he acquired 2.5166 restricted stock units and 9.4278 restricted stock units, each representing dividend equivalent units credited when Amkor paid a dividend.
These dividend equivalent units convert into additional restricted stock units tied to earlier RSU grants from May 15, 2025 and May 13, 2026, and are subject to the same vesting and other terms as those original awards. The transactions are compensation-related grants rather than open‑market stock purchases or sales.
CHURCHILL WINSTON J reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director Winston J. Churchill reported a small compensation-related equity change. He received 2.5166 dividend equivalent units in the form of restricted stock units, linked to a dividend paid on June 23, 2026 and tied to existing time-vested RSUs granted on May 13, 2026. Following this award, his directly held restricted stock unit balance increased to 2,615.5166 units, each representing one share of common stock when vested.
Amkor Technology director Roger Anthony Carolin reported three compensation-related acquisitions of restricted stock units. On June 23, 2026, he received small blocks of RSUs—2.5166, 9.4278, and 8.1651 units—credited as dividend equivalent units tied to prior time‑vested RSU grants from May 16, 2023, May 15, 2025, and May 13, 2026. Each dividend equivalent unit converts into an additional RSU with the same vesting terms as the original awards, and there were no open‑market share purchases or sales in this filing.
AMKOR TECHNOLOGY, INC. director Douglas A. Alexander reported compensation-related equity changes rather than open-market trading. On June 23, 2026 he acquired small numbers of Restricted Stock Units as dividend equivalent units tied to previously granted time-vested RSUs. These include 2.5166 RSUs linked to a May 17, 2022 grant and 9.4278 RSUs linked to a May 16, 2023 grant, with each dividend equivalent unit converting into an additional RSU under the same terms as the original awards.
AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers reported an option exercise and related share sale. He exercised employee stock options to acquire 5,000 shares of common stock at $7.40 per share and sold 5,000 shares in an open-market transaction at an average price of $86.21 per share. The sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly holds 38,904 shares of Amkor common stock.
Amkor Technology director Winston J. Churchill reported an exercise-and-sell transaction in company stock. He exercised stock options to acquire 5,000 shares of Common Stock at $19.39 per share, then sold 5,000 shares in an open-market sale at $78.20 per share on June 12, 2026. Following these transactions, his directly held position remained at 28,781 Common Stock shares, indicating the option exercise and sale largely served as a liquidity event without changing his overall share count.
AMKOR TECHNOLOGY, INC. director and 10% owner group member Susan Y. Kim reported an acquisition of common stock tied to previously granted equity awards. On May 15, 2025 she was granted 9,789 time-vested restricted stock units (RSUs), plus 104 dividend equivalent units (DEUs). These RSUs and DEUs vested on May 13, 2026 and on June 12, 2026 converted into 9,893 shares of Amkor common stock on a one-for-one basis at a stated price of $0.00 per share.
Following this conversion, Kim directly holds 6,120,387 Amkor common shares. She also has indirect interests through various entities, including Sujochil, LP with 19,484,809 shares and Sujoda Investments, LP with 3,789,479 shares, as well as multiple trusts and grantor retained annuity trusts. She is treated as having a pecuniary interest in these holdings but disclaims beneficial ownership beyond that pecuniary interest.
Amkor Technology, Inc. CFO Megan Faust reported an open-market sale of 1,000 shares of common stock on June 9, 2026, at a price of $70.30 per share. After this transaction, she directly holds 132,138 shares. The sale was executed under a Rule 10b5-1 trading plan adopted on February 17, 2026.
AMKOR TECHNOLOGY, INC. executive vice president and general counsel Mark N. Rogers exercised stock options and sold shares in a coordinated transaction. On May 18, 2026, he exercised options to acquire 5,000 shares of common stock at $7.40 per share and sold 5,000 shares in an open-market sale at an average price of $71.63 per share. The sale was made under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025. After these transactions, he directly owns 38,904 shares of Amkor common stock.
AMKOR TECHNOLOGY, INC. CFO Megan Faust reported an open-market sale of 1,000 shares of common stock at $64.60 per share. The transaction was executed under a pre-arranged Rule 10b5-1 trading plan. After this sale, she directly holds 133,138 shares of Amkor common stock.
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.
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.
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.
AMKOR TECHNOLOGY, INC. director Douglas A. Alexander reported an option exercise-and-sale on Common Stock. On May 5, 2026, he exercised options for 5,000 shares at strike prices of $8.51 and $9.45, then sold 5,000 shares in open-market transactions at $76.58 per share. Following these transactions, he directly owned 29,109 common shares.
AMKOR TECHNOLOGY, INC. executive Mark N. Rogers, EVP & General Counsel, exercised options to acquire 5,000 shares of common stock at $7.40 per share and, on the same day, sold 5,000 shares in an open-market transaction at $59.43 per share. Following these transactions, he directly holds 38,904 common shares and 90,000 employee stock options. The filing notes the sale was executed under a pre-arranged Rule 10b5-1 trading plan adopted on August 1, 2025, indicating the sale timing was planned in advance.
Amkor Technology director and 10% owner Susan Y. Kim exercised options to acquire 20,000 shares of Common Stock. She exercised a director stock option for 20,000 shares at an exercise price of $5.66 per share, a grant originally issued on May 4, 2016 that vested on May 2, 2017.
Following the exercise, she directly holds 6,110,494 shares of Amkor Common Stock. The filing also lists substantial additional indirect holdings through various grantor retained annuity trusts, other family trusts, and limited partnerships including Sujochil, LP and Sujoda Investments, LP, in which she is a trustee, general partner, or LLC member.
The report notes that she is treated as having a pecuniary interest in these indirect holdings for reporting purposes but expressly disclaims beneficial ownership beyond her actual economic interest.
AMKOR TECHNOLOGY, INC. director Robert Randolph Morse exercised stock options and settled related taxes using shares. He exercised a Director Stock Option covering 20,000 shares of Common Stock at an exercise price of $5.66 per share in a net exercise with the issuer.
To cover the exercise price or tax liability, 2,378 shares of Common Stock were disposed of in a tax-withholding transaction. Following these events, Morse holds 134,977 shares of Amkor Common Stock directly. No shares were bought or sold in the open market, and the option, granted in 2016 and fully vested in 2017, is now fully exercised.
WATSON DAVID N reported acquisition or exercise transactions in this Form 4 filing.
AMKOR TECHNOLOGY, INC. director David N. Watson received a small grant of additional restricted stock units as part of his existing equity compensation. The award covers 18.1563 dividend equivalent units, each representing one extra time-vested RSU tied to a cash dividend paid on March 31, 2026.
After this grant, Watson directly holds a total of 9,893.0573 restricted stock units. This is a routine, non-cash compensation adjustment rather than an open-market stock purchase or sale.
AMKOR TECHNOLOGY, INC. director Tily Gil C. reported an acquisition of additional equity-based compensation. On March 31, 2026, the director received 18.1563 dividend equivalent units, each representing an additional restricted stock unit tied to a prior May 15, 2025 RSU grant. Following this award, the director directly holds 9,893.0573 restricted stock units linked to Amkor common stock.