MAGNACHIP SEMICONDUCTOR Corp — Director's Dealing 2026

Jan 2, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: MAGNACHIP SEMICONDUCTOR Corp (MX)
CIK: 0001325702
Period of Report: 2025-08-15

Reporting Person: Lee Seunghoon (N/A)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2025-08-15	Common Stock	A	30750	—	Acquired	136953	Direct
2025-12-31	Common Stock	A	7000	$2.55	Acquired	143953	Direct
2025-12-31	Common Stock	F	3333	$2.55	Disposed	140620	Direct
2025-12-31	Common Stock	F	2778	$2.55	Disposed	137842	Direct
2025-12-31	Common Stock	F	4761	$2.55	Disposed	133081	Direct
2025-12-31	Common Stock	F	4880	$2.55	Disposed	128201	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2025-08-15	Performance-Based Restricted Stock Units	$	A	15375	Acquired	2028-01-31	Common Stock (15375)	Direct

Footnotes

F1: This transaction reflects shares of common stock issued in connection with the vesting of financial performance-based restricted stock units granted on June 1, 2024.

F2: This transaction represents the withholding by the Issuer of 3,333 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 7,000 shares of common stock originally awarded to the Reporting Person on June 1, 2024.

F3: This transaction represents the withholding by the Issuer of 2,778 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 5,834 shares of common stock originally awarded to the Reporting Person on March 23, 2023.

F4: This transaction represents the withholding by the Issuer of 4,761 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 10,000 shares of common stock originally awarded to the Reporting Person on June 1, 2024.

F5: This transaction represents the withholding by the Issuer of 4,880 shares of common stock to satisfy tax withholding obligations incurred by the Reporting Person upon the vesting of 10,250 shares of common stock originally awarded to the Reporting Person on August 15, 2025.

F6: Each Performance-Based Restricted Stock Units ("PRSUs") represents a contingent right to receive one share of Issuer's common stock.

F7: Reflects a number of shares of Issuer common stock that the Reporting Person would receive upon vesting and settlement of the PRSUs at the target level of performance, provided that the actual number of PRSUs that would become eligible to vest range from 0% to 100% of the target number of PRSUs based on actual achievement. The PRSUs vest upon Issuer's common stock achieving a specified price per share.