Amkor Technology, INC Form 4 insider transactions

Amkor Technology's EVP & General Counsel, Mark N. Rogers, executed a pre-planned sale of 20,000 common shares for approximately $42.95 per share after exercising stock options.

AMKOR Technology Director MaryFrances McCourt reported a pre-planned exercise of stock options and subsequent sale of 20,000 shares under a Rule 10b5-1 plan.

Amkor Technology's Executive Vice President, Kevin Engel, reported the sale of 11,000 shares of common stock at a weighted average price of $46.21 under a 10b5-1 plan.

Amkor Technology Director Gil C. Tily sold 20,000 shares of common stock for a weighted average price of $46.44, executed under a Rule 10b5-1 plan.

Amkor Technology Director Susan Y. Kim reported a change in the form of her beneficial ownership of 758,000 common shares, moving them from indirect to direct ownership via a GRAT distribution.

A trust associated with a 10% owner of Amkor Technology, Inc. gifted 758,000 shares of common stock to Susan Y. Kim.

Susan Y. Kim, a Director and 10% owner of Amkor Technology, Inc., reported several non-market share transfers related to grantor retained annuity trusts (GRATs) and other family trusts.

Amkor Technology Director James J. Kim filed a Form 4 detailing a future distribution of 965,000 common shares from one trust to another, effective November 21, 2025.

A trust associated with a 10% owner of Amkor Technology, Inc. reported the distribution of 876,000 common shares to Susan Y. Kim, representing a change from indirect to direct ownership.

Agnes C. Kim, a member of Amkor Technology's 10% owner group, reported an internal transfer of 705,000 common shares between trusts.

A trust associated with Agnes C. Kim, a member of Amkor Technology's 10% owner group, transferred 705,000 shares of common stock to another trust.

A trust associated with a 10% owner of Amkor Technology distributed 965,000 shares of common stock to another trust.

Amkor Technology's President and CEO, Guillaume Rutten, sold 10,000 shares of common stock for a weighted average price of $31.68 per share, executed under a pre-arranged 10b5-1 trading plan.

Amkor Technology's EVP & General Counsel, Mark N. Rogers, exercised stock options and subsequently sold 20,000 shares of common stock under a pre-arranged trading plan.

Amkor Technology EVP Farshad Haghighi reported early RSU vesting tied to retirement eligibility with 797 shares withheld for taxes at $31.68, leaving direct ownership unchanged.

Amkor Technology EVP Kevin Engel had 669 RSU shares vest early due to retirement eligibility, with all shares withheld at $31.68 for taxes, leaving direct ownership unchanged at 11,321 shares.

John T. Kim, a Director and 10% owner of Amkor Technology, Inc., reported a change in the form of his beneficial ownership of common stock from indirect to direct through GRAT distributions.

John T. Kim's GRAT distributed 40,750 Amkor Technology common shares, changing ownership from indirect to direct.

A Form 4 filing reveals John T. Kim's GRAT distributed 806,000 Amkor Technology common shares, changing ownership from indirect to direct.

Amkor Technology's President and CEO, Guillaume Marie Jean Rutten, sold 10,000 shares of common stock for $30.74 per share on October 15, 2025, under a pre-arranged 10b5-1 trading plan.

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

Amkor Technology CFO Megan Faust reported the vesting of 8,692 restricted stock units and the subsequent disposition of 3,725 shares for tax obligations.

Amkor Technology's President and CEO, Guillaume Marie Jean Rutten, acquired 8,692 shares of common stock through the scheduled vesting of restricted stock units.

Amkor Technology Director Susan Y. Kim reported the accrual of dividend equivalent units on restricted stock units and detailed her extensive beneficial ownership of common stock.

Amkor Technology Director Douglas A. Alexander increased his beneficial ownership of Restricted Stock Units through routine dividend equivalent unit accruals.

Amkor Technology Director Roger Anthony Carolin increased his beneficial ownership of restricted stock units through dividend equivalent unit accruals.

Amkor Technology Director Winston J. Churchill acquired additional restricted stock units through dividend equivalent units on September 23, 2025.

Amkor Technology Director Gil C. Tily accrued 27.3648 dividend equivalent units related to previously granted restricted stock units.

Amkor Technology Director David N. Watson acquired 27.3648 Restricted Stock Units through dividend equivalent units on September 23, 2025, increasing his beneficial ownership to 9,854.8917 units.

Amkor Technology director Robert Randolph Morse acquired additional restricted stock units through dividend equivalent units.