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ATI Insider Trading

Form 4 insider transactions for ATI over the last 6 months. Buys, sells and grants by directors and officers.

InsiderDateTypeSharesPrice
Harris Timothy JSenior VP and CDIOSep 21, 2026Sell9,000$191.82
Harris Timothy JSenior VP and CDIOSep 14, 2026Sell16,500$193.06
Harris Timothy JSenior VP and CDIOSep 8, 2026Sell16,500$207.54
Morehouse David JSep 2, 2026Sell2,485$201.61
Harris Timothy JSenior VP and CDIOAug 31, 2026Sell16,500$210.01
Harris Timothy JSenior VP and CDIOAug 24, 2026Sell16,500$206.92
Fields Kimberly AChair, President and CEOAug 17, 2026Sell24,845$231.19
Fields Kimberly AChair, President and CEOJul 28, 2026Sell31,757$190.99
Fields Kimberly AChair, President and CEOJul 7, 2026Sell37,800$183.04
Foster James RobertSVP, Finance and CFOJul 1, 2026Option exercise163$193.82
Fields Kimberly AChair, President and CEOJun 24, 2026Sell3,783$197.21
Fields Kimberly AChair, President and CEOJun 23, 2026Sell3,641$197.48
Fields Kimberly AChair, President and CEOJun 22, 2026Sell13,269$202.48
Fields Kimberly AChair, President and CEOJun 2, 2026Sell59,749$179.07
BALL M LEROYMay 19, 2026Grant / award905—
Carlisle Herbert JMay 19, 2026Grant / award905—
Corvi CarolynMay 19, 2026Grant / award905—
Hess David PMay 19, 2026Grant / award905—
Kah MarianneMay 19, 2026Grant / award905—
Lund Elizabeth HefleyMay 19, 2026Grant / award905—
Lydon-Rodgers JeanMay 19, 2026Grant / award905—
Morehouse David JMay 19, 2026Grant / award1,743—
Sharma RubyMay 19, 2026Grant / award905—
Fields Kimberly APresident, CEO and DirectorMay 11, 2026Sell40,000$159.21

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Source: SEC EDGAR Form 4 filings.