Form 4: Amkor Director Susan Kim Reports Equity Vesting and Grant

Director Susan Y. Kim reported the vesting of restricted stock units and a new equity grant in Amkor Technology, Inc.

Summary

• Reporting person Susan Y. Kim, a director and 10% owner, executed a transaction involving restricted stock units (RSUs) on May 13, 2026.
• 9,893.0573 RSUs vested and were settled, with a portion settled in cash and the remainder converting to common stock.
• A new grant of 2,613 RSUs was issued to the director on May 13, 2026, as compensation for board service.
• The reporting person maintains significant indirect beneficial ownership through various family trusts, limited partnerships, and management entities.

Sentiment

Score: 5

Explanation: StockSavvy.ai views this as a neutral regulatory filing documenting routine director equity transactions.

Positives

• Continued alignment of director interests with shareholders through equity-based compensation.
• Transparent disclosure of complex beneficial ownership structures involving family trusts and investment vehicles.

Negatives

• None identified; this is a standard regulatory disclosure of director equity activity.

Risks

• Concentration of ownership within the Kim family group may influence corporate governance and strategic decision-making.

Future Outlook

The 2026 RSUs are scheduled to vest in full on the earlier of the first anniversary of the grant date or the date of the issuer's first annual meeting of stockholders following the grant.

Management Comments

• The reporting person disclaims beneficial ownership of reported securities except to the extent of their pecuniary interest.

Industry Context

StockSavvy.ai notes that this filing reflects standard director compensation practices within the semiconductor packaging and test services industry, where equity-based incentives are common to ensure long-term commitment from board members.

Comparison to Industry Standards

• The use of time-vested RSUs for director compensation is consistent with standard corporate governance practices for large-cap technology firms.
• The reporting structure is typical for family-controlled entities within the semiconductor sector.

Related Party Transactions

• Disclosure of various family trusts, Sujoda Investments, LP, and Sujochil, LP as vehicles for indirect beneficial ownership.

Stakeholder Impact

• Minimal impact on shareholders as the transaction represents standard director compensation and internal ownership adjustments.

Next Steps

• Vesting of the 2,613 RSUs granted on May 13, 2026, expected by May 2027.

Key Dates

Keywords

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