InsiderTrades

Form 4 for ATI ATI INC

Accepted 2026-09-10 16:12:11 ET · period of report 2026-09-08 · accession 0001193125-26-387885 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X Filed Traded Ticker Insider Title Type Price Qty Owned ΔOwn Value
T 2026-09-10 16:12 2026-09-08 ATI Harris Timothy J Senior VP, CDIO S - Sale $207.54 -16.5K 113.7K -13% -$3.42M

Purchase Sale Sale after option exercise All abbreviations

Every reported transaction

#TableSecurityDateCodeA/DSharesPriceOwned afterOwnExercise / expiryUnderlyingFootnotes
1 Common Common Stock, par value $0.10 per share 2026-09-08 S D 16,500 $207.54 113,687 D — — (F1) Shares sold pursuant to a 10b5-1 Trading Plan dated May 21, 2026, entered into for personal tax and estate planning purposes.