Amkor Tech SEC Filings

Amkor Technology Inc. (AMKR) – Form 4 filing dated 07/02/2025

President & CEO Guillaume Marie Jean Rutten reported the vesting and conversion of 8,691 restricted stock units (RSUs) into common shares on 06/30/2025 (transaction code “M”). The conversion carried a $0 exercise price, so no cash changed hands. Following the transaction, Rutten’s directly held common-share position increased to 368,007 shares. In addition, he still holds 34,768 unvested RSUs that continue to vest quarterly through 06/30/2026.

The RSUs stem from a grant of 43,459 units awarded on 02/20/2025, vesting in five equal installments (8,691 shares each) on 06/30/2025, 09/30/2025, 12/31/2025, 03/31/2026 and 06/30/2026. There were no open-market purchases or sales and no disposition of shares, so the filing primarily reflects routine equity-compensation vesting rather than a change in the executive’s investment stance.

For investors, the filing signals: (1) ongoing equity-based compensation alignment between the CEO and shareholders; (2) no immediate selling pressure from management; and (3) minimal dilution impact given the small share count relative to Amkor’s ~246 million shares outstanding.

Form 4 highlights: Amkor Technology’s Chief Financial Officer, Megan Faust, reported routine equity transactions dated 06/30/2025 related to previously granted Restricted Stock Units (RSUs) under the company’s 2021 Equity Incentive Plan.

• Vesting event: 8,691 RSUs vested and were automatically converted into an equal number of common shares (Transaction Code M). The vest carries a stated value of $0 in the filing because RSUs convert without cash consideration.
• Tax-withholding sale: To cover associated tax obligations, 3,725 shares were withheld by Amkor (Transaction Code F) at an indicated price of $20.99 per share.
• Net share change: After the two entries, Faust’s direct ownership decreased from 90,829 to 87,104 shares, a net reduction of 3,725 shares (the amount withheld for taxes). No open-market sale or purchase was executed by the insider.
• Remaining unvested RSUs: 34,768 units continue to vest in equal quarterly tranches on 09/30/2025, 12/31/2025, 03/31/2026, and 06/30/2026, completing the five-installment schedule.

Investor take-away: The filing reflects scheduled equity compensation activity rather than discretionary trading. Because the CFO retained the majority of vested shares and disposals were solely for statutory tax purposes, the transaction is generally viewed as neutral in terms of insider sentiment and should have limited impact on near-term share-price performance.

Form 4 overview: Amkor Technology, Inc. (AMKR) disclosed insider activity by Director Douglas A. Alexander. On 06/25/2025 the director acquired derivative securities in the form of restricted stock units (RSUs) that arose automatically as dividend-equivalent units (DEUs) on previously granted RSUs.

Details of derivative transactions:

• 34.2646 RSUs accrued on the 2022 grant, raising that award's total to 9,180.1509 RSUs.
• 33.3674 RSUs accrued on the 2023 grant, raising that award's total to 8,839.034 RSUs.
• 38.5269 RSUs accrued on the 2025 grant, raising that award's total to 9,827.5269 RSUs.

All three entries are coded “A” (acquired) at a cost of $0 because DEUs are issued in lieu of a cash dividend. Ownership remains direct; no shares were sold or transferred. No common‐stock transactions were reported in Table I, and no other changes in beneficial ownership were disclosed.

Implications for investors: The filing reflects routine dividend reinvestment mechanics rather than an elective purchase or sale. The incremental 106.1589 RSUs (<0.1% of Amkor’s 2024 basic share count) are immaterial to the company’s capital structure and do not signal a change in insider sentiment.

Amkor Technology, Inc. (AMKR) – Form 4 filing dated 27 June 2025: Director Winston J. Churchill disclosed a small, automatic increase in his derivative holdings. On 25 June 2025 he received 38.5269 dividend-equivalent restricted stock units (RSUs) that accrued when the company paid its cash dividend on that same date. The transaction is coded “A” (acquisition) and carries a $0 exercise/price because dividend-equivalent units are granted at no cost to the insider.

Following the credit of these units, Churchill now holds 9,827.5269 RSUs directly. No common shares were bought or sold, and no disposition occurred. The filing does not indicate that the transaction was executed under a Rule 10b5-1 trading plan, and no other equity instruments (options, warrants, etc.) were reported. Churchill remains classified as a non-employee director; no changes to his status, board role or compensation structure were disclosed.

Because the reported increase represents less than 0.1% of outstanding RSUs typically held by senior insiders and was generated mechanically by the dividend policy, the event is administrative in nature and does not materially alter insider ownership or signal a change in sentiment. Investors usually view such DEU accruals as neutral since they neither require capital outlay nor reflect an active investment decision.

Amkor Technology, Inc. (AMKR) – Form 4 insider filing. Director Roger A. Carolin reported two automatic accruals of dividend-equivalent units (DEUs) on 25 Jun 2025, tied to previously granted restricted stock units (RSUs).

• Transaction code: A (acquisition by issuer without payment).
• Units acquired: 33.3674 and 38.5269 RSUs, totalling 71.8943 new RSUs at $0 cost.
• Post-transaction holdings: 8,839.034 RSUs (2023 grant series) and 9,827.5269 RSUs (2025 grant series), all held directly.
• DEUs carry the same vesting terms as the underlying RSUs and convert to common stock upon vesting.

No open-market activity occurred; the filing reflects routine, non-cash adjustments following the company’s dividend payment on the same date. There is no immediate balance-sheet or P&L impact on Amkor, and the modest increase in insider ownership is generally viewed as neutral from a market-moving perspective.

Form 4 filing – Amkor Technology, Inc. (AMKR)

Director John D. Liu reported one insider transaction dated 06/25/2025. The transaction reflects the automatic crediting of 38.5269 dividend-equivalent units (DEUs), booked as additional time-vested restricted stock units (RSUs). These DEUs arose from the company’s dividend paid on 06/25/2025 and inherit the same vesting schedule as the RSUs originally granted on 05/15/2025.

Following the credit, Liu’s direct ownership stands at 9,827.5269 RSUs. The filing lists a transaction price of $0, indicating no cash outlay and no open-market activity. No changes were reported for non-derivative holdings or indirect ownership.

The document was signed by attorney-in-fact Mark N. Rogers on 06/27/2025. The filing is compliant with Section 16 reporting requirements and contains no indications of sales, option exercises, or other material equity movements.