Amkor Technology, INC Form 4 insider transactions

Amkor Technology Director Roger Carolin accrued additional restricted stock units through dividend equivalent units on December 23, 2025.

Amkor Technology director Winston J. Churchill acquired 20.0093 restricted stock units through dividend equivalents on December 23, 2025, increasing his direct beneficial ownership to 9,874.901 RSUs.

Amkor Technology Director Daniel Liao accrued 20.0093 dividend equivalent units tied to his restricted stock units following a dividend payment on December 23, 2025.

Amkor Technology Director MaryFrances McCourt acquired additional Restricted Stock Units through dividend equivalent units.

Amkor Technology Director Robert Randolph Morse accrued additional restricted stock units through dividend equivalent units following a December 23, 2025 dividend payment.

Amkor Technology Director Gil C. Tily accrued 20.0093 dividend equivalent units on December 23, 2025, tied to existing restricted stock units.

Amkor Technology Director David N. Watson accrued 20.0093 dividend equivalent units on his restricted stock units following a dividend payment.

Amkor Technology Director Susan Y. Kim reported the indirect acquisition of over 5.7 million shares of common stock through grantor retained annuity trusts and accrued dividend equivalent units.

Amkor Technology Director James J. Kim and his spouse transferred over 5.7 million shares of common stock to grantor retained annuity trusts.

Agnes C. Kim, a member of Amkor Technology's 10% owner group, reported significant transfers of common stock to grantor retained annuity trusts for estate planning purposes.

Amkor Technology Director Winston J. Churchill exercised stock options and subsequently sold an equal number of common shares on December 15, 2025, as part of a pre-arranged trading plan.

Amkor Technology's President and CEO, Guillaume Marie Jean Rutten, sold 10,000 shares of common stock for approximately $44.8 per share under a pre-arranged trading plan.

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.