Amkor Tech SEC Filings

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.

Amkor Technology, Inc. (AMKR) – Form 4 insider filing dated June 25, 2025

Director Daniel J. Liao reported the automatic acquisition of 38.5269 dividend-equivalent restricted stock units (RSUs). The RSUs were credited in connection with the company’s June 25 cash dividend and are subject to the same vesting terms as the original May 15, 2025 time-vested RSU grant. Following the credit, Liao now beneficially owns 9,827.5269 RSUs in a direct capacity. No common shares were sold, and no cash consideration was paid ($0 exercise price). The filing reflects routine dividend-related adjustments rather than discretionary trading activity, and it does not alter ownership status or control thresholds.

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

Director MaryFrances McCourt reported two automatic equity accruals dated 25 June 2025 tied to the company’s quarterly cash dividend. The transactions involve dividend equivalent units (DEUs), which convert dividend payments on previously granted time-vested restricted stock units (RSUs) into additional RSUs under identical vesting terms.

• Grant 1 (original RSUs granted 16 May 2023): 33.3674 DEUs credited.
• Grant 2 (original RSUs granted 15 May 2025): 38.5269 DEUs credited.

No cash consideration was paid (exercise price = $0). Following these accruals, McCourt now holds 8,839.034 and 9,827.5269 RSUs, respectively, all recorded as direct ownership. The filing contains no sales, option exercises, or open-market purchases; it simply documents routine dividend-linked adjustments required under the original RSU agreements.

Because the combined addition of roughly 72 RSUs represents an immaterial change in ownership and carries no immediate earnings or liquidity impact, the filing appears administrative and non-material for most investors.

Form 4 filing overview – Amkor Technology, Inc. (AMKR), filed 27 June 2025. The report covers insider Susan Y. Kim, who is listed as Director, 10% Owner, member of a 10%-owner group and holder of multiple family-related trusts and entities.

New transaction: On 25 June 2025 Kim acquired 38.5269 Restricted Stock Units (classified as dividend-equivalent units, “DEUs”) that accrued automatically on outstanding RSUs because Amkor paid a dividend the same day. The DEUs carry the same vesting terms as the original May 15 2025 RSU grant. No sales or cash purchases were reported.

Post-transaction beneficial ownership (non-derivative common shares):

• Directly held: 3,738,492 shares.
• Indirectly held via GRATs, family trusts and investment partnerships: 57,130,987 shares.
• Total reported beneficial interest: ≈60,869,479 common shares (subject to footnote disclaimers).

Post-transaction derivative holdings: 9,827.5269 RSUs (includes the newly added 38.5269 DEUs).

Key footnotes: (1-4) Kim serves as trustee, general partner or manager for multiple GRATs, trusts and LP/LLC vehicles; beneficial ownership is reported on a pecuniary-interest basis yet disclaimed where appropriate. (5) The only transaction is the automatic DEU accrual described above. (6) Filing does not admit beneficial ownership of securities held by other group members.

Investor takeaways: The filing reflects routine dividend-related RSU accretion and provides an updated snapshot of a large insider holding (~61 million shares). No open-market purchases or sales occurred, so immediate market impact is likely minimal.

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

Director Robert R. Morse reported two automatic equity adjustments on 06/25/2025. No open-market trades occurred. Instead, the company issued dividend equivalent units (DEUs) that convert into additional restricted stock units (RSUs):

• 33.3674 RSUs credited under the May 16 2023 grant, raising that award to 8,839.034 RSUs.
• 38.5269 RSUs credited under the May 15 2025 grant, lifting that award to 9,827.5269 RSUs.

The DEUs were issued at $0 cost and carry the same vesting terms as the underlying RSUs. Morse’s ownership increased by 71.8943 derivative shares in total, signaling routine dividend-linked adjustments rather than discretionary purchases or sales.