Timothy J. Harris - 04 Nov 2025 Form 4 Insider Report for ATI INC (ATI)

Signature
/s/ Amanda J. Skov, Attorney-in-Fact for Timothy J. Harris
Issuer symbol
ATI
Transactions as of
04 Nov 2025
Net transactions value
-$1,012,866
Form type
4
Filing time
05 Nov 2025, 14:19:46 UTC
Previous filing
07 Jan 2025
Next filing
12 Nov 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Harris Timothy J Senior VP and CDIO C/O ATI INC., 2021 MCKINNEY AVE., SUITE 1100, DALLAS /s/ Amanda J. Skov, Attorney-in-Fact for Timothy J. Harris 05 Nov 2025 0001776844

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction ATI Common Stock, par value $0.10 per share Sale $1,012,866 -10,543 -7.5% $96.07 129,937 04 Nov 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Shares sold pursuant to a 10b5-1 Plan dated August 6, 2025.