Welcome to our dedicated page for Amkor Tech SEC filings (Ticker: AMKR), a comprehensive resource for investors and traders seeking official regulatory documents including 10-K annual reports, 10-Q quarterly earnings, 8-K material events, and insider trading forms.
Amkor Technology Inc. filings document the regulatory record for a Nasdaq-listed outsourced semiconductor packaging and test company. The company’s 8-K reports furnish results of operations and financial condition, disclose material agreements and other events, and describe capital-structure matters involving common stock, senior notes and convertible senior notes.
AMKR filings also cover governance and ownership subjects through definitive proxy materials, officer appointments and underwriting agreements related to registered secondary offerings. Recent debt disclosures describe 0.00% convertible senior notes due 2031, subsidiary guarantees and their relationship to other senior unsecured indebtedness, while earnings-related filings include non-GAAP measures such as EBITDA alongside GAAP results.
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.
Amkor Technology, Inc. (AMKR) – Form 4 filing
Director Gil C. Tily reported the automatic acquisition of 38.5269 restricted stock units (RSUs) on 25 June 2025. The RSUs were issued as dividend equivalent units (DEUs) linked to previously granted, time-vested RSUs dated 15 May 2025. Each DEU carries the same vesting conditions as the underlying award and was credited at no cash cost to the insider (price $0).
Following this routine dividend accrual, Tily’s total beneficial ownership increased to 9,827.5269 RSUs, held in direct form. No common shares were sold, and no option-like derivatives were exercised or disposed.
The transaction represents a 0.4% incremental increase to the insider’s existing RSU position and appears administrative rather than strategic. No immediate cash outlay was made, and there is no indication of market purchase or sale activity under Rule 10b5-1. Overall market impact is expected to be immaterial due to the small size relative to Amkor’s ~247 million outstanding shares.
Amkor Technology, Inc. (AMKR) – Form 4 insider transaction
Director David N. Watson filed a Form 4 reporting an acquisition of 38.5269 restricted stock units (RSUs) on 25 June 2025. The RSUs were accrued automatically as dividend-equivalent units (DEUs) linked to a prior grant of time-vested RSUs dated 15 May 2025. Consistent with DEU mechanics, the transaction price is listed at $0 and carries the same vesting provisions as the underlying award.
Following the crediting of these DEUs, Watson’s beneficial ownership in derivative securities tied to Amkor common stock increased to 9,827.5269 RSUs, all held directly. No shares were sold, and no open-market cash consideration was exchanged.
The filing does not reference a Rule 10b5-1 trading plan and shows no change in non-derivative share ownership. Given the small size of the incremental grant relative to Watson’s existing position and Amkor’s share count, the event is routine and not expected to have a material impact on the company’s capital structure or insider sentiment.