Amkor Technology Director Receives Dividend Equivalent RSUs

Executive Summary

On September 24, 2026, Amkor Technology, Inc. director Roger Anthony Carolin filed a Form 4 disclosing the acquisition of an aggregate of approximately 31.95 dividend equivalent units (DEUs) credited as Restricted Stock Units on September 22, 2026. These represent routine accruals associated with previously granted time-vested RSUs upon payment of a cash dividend. Because this is an automatic dividend equivalent accrual, it carries Low trading significance.

Transaction Breakdown

• Security: Restricted Stock Units (DEUs)
• Transaction Code: A (Grant, award or other acquisition)
• Tranches Accrued:
  • 12.9709 units accrued on May 16, 2023 RSU grant (holding 8,916.9241 post-transaction)
  • 14.9767 units accrued on May 15, 2025 RSU grant (holding 9,917.4618 post-transaction)
  • 3.9978 units accrued on May 13, 2026 RSU grant (holding 2,619.5144 post-transaction)
• Total Accrued: 31.9454 units
• Price Per Share: $0.00

Conclusion

This filing reflects regular corporate governance and equity administration under Amkor's dividend equivalent policy on unvested RSUs. It does not represent discretionary market activity or open-market purchasing.