Fields Kimberly A 4

What Happened
Kimberly A. Fields, Chair, President & CEO and a director of ATI Inc. (ATI), sold a total of 59,749 ATI shares in open-market transactions on June 2, 2026, generating roughly $10.7 million. The sales were reported in six lots: 3,001 shares @ $182.75 ($548,433); 25,823 @ $177.97 ($4,595,719); 13,865 @ $179.05 ($2,482,528); 13,164 @ $179.71 ($2,365,702); 1,896 @ $180.80 ($342,797); and 2,000 @ $181.90 ($363,800). These transactions are sales (S) and not purchases — typically viewed as routine or liquidity-driven rather than a bullish signal.

Key Details

• Transaction date: June 2, 2026; Form filed June 4, 2026 (filed within the SEC’s 2-business-day reporting window).
• Total shares sold: 59,749; total proceeds: approximately $10,698,979 (rounded to $10.7M).
• Reported prices per lot: $182.75; $177.97; $179.05; $179.71; $180.80; $181.90.
• Footnotes: sales were made pursuant to a 10b5-1 trading plan dated Feb 5, 2026 (preplanned). Several lines report weighted-average prices; sales occurred across price ranges roughly $177.42 to $183.18 (see filing footnotes F2–F7 for exact ranges).
• Shares owned after the transactions: not specified in the provided excerpt of the filing.
• Transaction code: S = Sale.

Context
Sales under a 10b5-1 plan are prearranged and often used for tax and estate planning or to systematically sell holdings; they do not necessarily reflect current management views on ATI’s prospects. Because these were outright open-market sales (not option exercises or gifts), no derivative or cashless-exercise mechanics apply here.