Form 4: Susan Y. Kim Reports Amkor Technology Stock Acquisition

Director Susan Y. Kim acquired 9,893 shares of Amkor Technology, Inc. common stock following the vesting of restricted stock units.

Summary

• Director Susan Y. Kim acquired 9,893 shares of Amkor Technology, Inc. (AMKR) common stock on June 12, 2026.
• The acquisition resulted from the vesting of 9,789 restricted stock units (RSUs) and 104 dividend equivalent units (DEUs) granted on May 15, 2025.
• The shares were acquired at a price of $0 per share upon conversion of the vested units.
• Following this transaction, the reporting person directly owns 6,120,387 shares of common stock.
• The filing also details extensive indirect beneficial ownership through various family trusts, GRATs, and limited partnerships, totaling millions of additional shares.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral event, as it is a routine disclosure of equity compensation vesting rather than a discretionary market trade.

Positives

• The transaction reflects the vesting of equity-based compensation, aligning the director's interests with long-term shareholder value.

Negatives

• None identified; this is a routine equity vesting event.

Risks

• The reporting person maintains significant indirect ownership through various trusts and partnerships, which may complicate future divestment or reporting requirements.

Future Outlook

No specific forward-looking guidance provided in this regulatory filing.

Industry Context

StockSavvy.ai notes that this filing represents standard administrative compliance for corporate insiders at a major semiconductor packaging and test services provider, reflecting typical equity compensation structures.

Comparison to Industry Standards

• The reporting of equity vesting is consistent with standard corporate governance practices for publicly traded semiconductor companies.
• The complex structure of indirect ownership through GRATs and LPs is common among high-net-worth individuals and founding families in the technology sector.

Related Party Transactions

• The filing discloses various trusts and limited partnerships (Sujoda Investments, LP; Sujochil, LP) associated with the reporting person's family.

Stakeholder Impact

• Minimal impact on shareholders as the transaction represents the fulfillment of previously granted equity compensation.

Next Steps

• No future actions or milestones were disclosed in this filing.

Key Dates

Keywords

Amkor Technology, AMKR, Form 4, Insider Trading, Equity Vesting, Director Ownership