Form 4: Amkor EVP Engel Reports RSU Vesting, Tax Withholding

Amkor Technology's Executive Vice President, Kevin Engel, reported the vesting of restricted stock units and subsequent share withholding for tax obligations.

Summary

• Kevin Engel, Executive Vice President of Amkor Technology, Inc., reported transactions related to his equity holdings.
• On December 31, 2025, 8,692 Restricted Stock Units (RSUs) vested, converting into 8,692 shares of common stock.
• Concurrently, 3,725 shares were disposed of at a price of $39.48 per share to satisfy tax withholding obligations related to the RSU vesting.
• Amkor Technology, Inc. will pay these taxes on behalf of Mr. Engel.
• Following these transactions, Mr. Engel directly beneficially owns 5,316 shares of common stock and 17,384 Restricted Stock Units.
• The RSUs were part of a grant of 43,459 units on February 20, 2025, vesting in five equal quarterly installments through June 30, 2026.

Sentiment

Score: 6

Explanation: The filing details a standard executive compensation event (RSU vesting) and the associated tax withholding. It reflects ongoing executive retention and compensation structure but does not provide new operational or financial performance information for the company.

Positives

• Vesting of 8,692 Restricted Stock Units indicates continued compensation and retention of a key executive.
• The company is covering the tax withholding obligations for the executive, which is a benefit to the executive.

Negatives

• Disposal of 3,725 shares, although for tax purposes, reduces the executive's direct common stock holdings.

Future Outlook

The remaining 17,384 Restricted Stock Units held by Kevin Engel are scheduled to vest in two equal quarterly installments on March 31, 2026, and June 30, 2026, completing the full vesting of the original grant.

Industry Context

This filing is a routine disclosure of executive compensation and equity management, common across all publicly traded companies. It does not provide specific insights into broader industry trends or competitive landscape.

Comparison to Industry Standards

• The use of Restricted Stock Units (RSUs) as a component of executive compensation is a standard practice in the technology and semiconductor packaging industry, similar to companies like ASE Technology Holding Co., Ltd. or Siliconware Precision Industries Co., Ltd.
• The vesting schedule over multiple quarters is also typical for executive retention and alignment with long-term company performance.
• The practice of withholding shares for tax obligations upon vesting is also standard.

Corporate Governance

Related Party Transactions

• The vesting of Restricted Stock Units and subsequent share withholding for tax obligations constitute a related party transaction between the company and its Executive Vice President, Kevin Engel, as part of his compensation package.

Stakeholder Impact

• Shareholders: Minimal direct impact as this is a routine compensation event. It reflects the ongoing cost of executive compensation through equity dilution, which is already factored into the company's compensation plans.
• Employees: No direct impact mentioned.
• Customers: No direct impact mentioned.
• Suppliers: No direct impact mentioned.
• Creditors: No direct impact mentioned.

Next Steps

• Future vesting of Kevin Engel's remaining 17,384 Restricted Stock Units on March 31, 2026, and June 30, 2026.

Key Dates

Recommendation

This Form 4 filing is a routine disclosure of an executive's equity transactions related to compensation. It does not contain information about the company's operational performance, financial health, or strategic direction that would warrant a change in investment recommendation. The transactions are expected and part of the company's established compensation plan, thus maintaining a "hold" recommendation based solely on this filing.

Keywords

Amkor Technology, AMKR, Form 4, insider transaction, restricted stock units, RSU vesting, executive compensation, Kevin Engel, tax withholding, equity incentive plan