SEC Filing Analysis: AMKOR TECHNOLOGY, INC. (AMKR)

Executive Summary

• Trading Significance: Low
• Key Takeaway: A 10% owner, John T. Kim, executed a non-market transfer of 846,750 shares from Grantor Retained Annuity Trusts (GRATs) to his direct ownership. This represents a change in the form of ownership, not a new investment or divestment.
• Market Impact: Neutral. The transaction has no economic substance and does not alter the insider's total beneficial holdings.

Company Information

Field	Value
Company	AMKOR TECHNOLOGY, INC.
Ticker Symbol	AMKR
CIK	0001047127
Industry	SEMICONDUCTORS & RELATED DEVICES

Insider Information

Field	Value
Name	KIM JOHN T
CIK	0001158926
Title/Position	null
Relationship	Ten Percent Owner, Other

Transaction Details

Field	Value
Form Type	4
Transaction Date	2025-11-04
Transaction Code	G (Gift/Trust Distribution)
Security Type	Common Stock
Shares Involved	846,750
Price Per Share	$0.00
Total Value	$0
Shares Owned After (Directly)	5,594,489
Ownership Type	Change from Indirect to Direct

Financial Impact Assessment

Transaction Materiality

Metric	Value
Transaction Value	$0
% of Market Cap	0.00%
Shares Transacted	846,750
% of Shares Outstanding	0.34%
Post-Transaction Ownership	The insider beneficially owns approximately 95.5 million shares (38.6% of outstanding) through various direct and indirect holdings.
Materiality Assessment	Low

Impact Evaluation

• Market Cap Context: The transaction has a value of $0 and is therefore immaterial relative to the company's $9.03 billion market capitalization.
• Ownership Concentration: The reporting person, as part of a group, holds a highly concentrated position of approximately 38.6% of all outstanding shares, indicating significant control.
• Transaction Significance: The transaction's significance is low as it is a non-economic event. The footnotes explicitly state it is a "mere change in the form of ownership from indirect to direct." Such transfers are common for tax and estate planning purposes.

Market Impact Analysis

Stock Impact Prediction

• Direction: Neutral
• Reasoning: The filing documents an administrative transfer of shares with no change in the insider's net economic exposure to the company. It does not signal any change in sentiment.

Volume & Sentiment

• Expected Volume Impact: None. This was not an open-market transaction.
• Sentiment Indicator: Neutral. The event is administrative and not indicative of bullish or bearish sentiment.

Additional Context

Transaction Notes

• Special Circumstances: The filing details distributions from two Grantor Retained Annuity Trusts (GRATs) back to the reporting person, who is the annuitant and trustee. The transaction code 'G' for Gift is used, but the footnotes clarify the nature of the transfer.