Director Roger Anthony Carolin filed a Form 4 with the SEC on November 9, 2026, disclosing the exercise of a stock option covering 20,000 shares of Amkor Technology, Inc. common stock on November 5, 2026.

Key Highlights

  • Transaction date: November 5, 2026, involving 20,000 shares of Amkor Technology common stock acquired via option exercise (transaction code M).
  • Exercise price: $8.51 per share, the conversion price of the Director Stock Option.
  • Option origin: The stock option was granted on May 1, 2018, vested in full on May 1, 2019, and was set to expire on May 1, 2028, according to the filing.
  • Derivative position after transaction: Zero Director Stock Options remain beneficially owned following the exercise, the filing states.
  • Resulting ownership: Following the transaction, Carolin directly beneficially owned 114,409 shares of common stock, as reported in the filing.
  • Price of derivative: The filing records the price of the derivative security as $0.

Carolin's November 2026 Option Exercise at Amkor Technology

Roger Anthony Carolin, identified in the filing as a director of Amkor Technology, Inc. (NASDAQ:AMKR), reported the exercise of a Director Stock Option on November 5, 2026. According to the filing, the option carried an exercise price of $8.51 per share and covered 20,000 shares of Amkor Technology common stock. The transaction is recorded under transaction code M, indicating the exercise of an in-the-money or at-the-money option or similar instrument.

The filing discloses that the option was originally granted on May 1, 2018, and vested in full on May 1, 2019, with an expiration date of May 1, 2028. Following the exercise, the filing states that Carolin holds zero Director Stock Options, as all 20,000 shares underlying the derivative were acquired. The price of the derivative security is listed as $0 in Table II of the filing.

After the reported transaction, Carolin's direct beneficial ownership of Amkor Technology common stock stands at 114,409 shares, according to the filing. The Form 4 was signed by Mark N. Rogers as attorney-in-fact for Roger A. Carolin and filed on November 9, 2026.

What Was Disclosed

The filing reports a single option exercise by Amkor Technology director Roger Anthony Carolin on November 5, 2026, covering 20,000 shares at $8.51 per share, leaving him with 114,409 shares of common stock directly owned and no remaining Director Stock Options.