Form 4: Amkor Director Exercises Options, Sells Shares

Amkor Technology Director Winston J. Churchill exercised stock options and subsequently sold an equal number of common shares on December 15, 2025, as part of a pre-arranged trading plan.

Summary

• Winston J. Churchill, a Director of Amkor Technology, Inc. (AMKR), reported transactions involving the company's common stock.
• On December 15, 2025, Churchill exercised stock options to acquire 5,000 shares of common stock at an exercise price of $19.39 per share.
• Concurrently, on the same date, Churchill sold 5,000 shares of common stock at a price of $44.29 per share.
• These transactions were made pursuant to a Rule 10b5-1 pre-arranged trading plan.
• Following these transactions, Churchill directly beneficially owns 25,888 shares of common stock and 15,000 derivative securities (stock options).
• The stock option exercised was granted on May 18, 2021, for 20,000 shares, vested in full on May 17, 2022, and expires on May 18, 2031.

Sentiment

Score: 5

Explanation: The filing reports a routine, pre-planned insider transaction (exercise of options and subsequent sale) by a director. It does not contain information that would significantly alter the company's fundamental outlook or market sentiment, hence a neutral score.

Positives

• The director realized a significant profit from the option exercise and sale, with a sale price of $44.29 per share compared to an exercise price of $19.39 per share.
• The transaction was conducted under a Rule 10b5-1 plan, indicating it was pre-arranged and not based on immediate, non-public information.

Negatives

• Insider selling, even if pre-planned, can sometimes be perceived by the market as a lack of confidence, although the context of option exercise often mitigates this.

Future Outlook

The filing is a transactional report and does not contain any forward-looking statements or guidance regarding the company's future performance or outlook.

Industry Context

This Form 4 filing details a routine insider transaction by a director of Amkor Technology. Such transactions are common in the semiconductor packaging and test industry, where executive compensation often includes equity-based incentives like stock options. The transaction itself does not provide insights into broader industry trends or competitive dynamics.

Related Party Transactions

• The filing details a transaction by Winston J. Churchill, a Director of Amkor Technology, Inc., which constitutes a related-party transaction. This is a standard disclosure for insider equity transactions.

Stakeholder Impact

• The direct impact on shareholders, employees, customers, suppliers, or creditors from this single, pre-planned insider transaction is minimal. It primarily affects the personal equity holdings of the reporting director.

Key Dates

Keywords

Amkor Technology, AMKR, Insider Trading, Form 4, Stock Options, Director Transaction, Equity Sale, 10b5-1 Plan, Winston J. Churchill