ATI INC 4

Kimberly A. Fields, Chair, President and CEO of ATI Inc., sold 24,845 shares of ATI common stock for approximately $5.7 million under a 10b5-1 trading plan.

On August 17, 2026, ATI Inc. Chair, President and CEO Kimberly A. Fields sold an aggregate 24,845 shares of ATI Inc. common stock in five open-market transactions pursuant to a Rule 10b5-1 trading plan adopted on February 5, 2026, for personal tax and estate planning purposes. The sales were executed at weighted-average prices ranging from approximately $228.32 to $232.43 per share, with underlying execution price ranges disclosed in the footnotes. Total proceeds from the transactions are estimated at about $5.69 million. Following these planned sales, Fields’ direct ownership decreased from 124,564 shares to 100,719 shares of ATI Inc. common stock, an equity stake now worth roughly $21.8 million based on the current market price, indicating that she retains a substantial ongoing ownership position despite the sizable disposition.

Filing Facts

CIK

1018963

Ticker

ATI

Form

4

Source Type

sec

Accession

0001193125-26-357113

Alert Tier

7