Welcome to our dedicated page for AMKOR TECHNOLOGY 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 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.