ATI INC — Director's Dealing 2023

Feb 27, 2023

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ATI INC (ATI)
CIK: 0001018963
Period of Report: 2023-02-23

Reporting Person: NEWMAN DONALD P (EVP and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2023-02-23	Common Stock, par value $0.10 per share	A	13214	$0.00	Acquired	146980	Direct
2023-02-23	Common Stock, par value $0.10 per share	F	5534	$40.51	Disposed	141446	Direct
2023-02-24	Common Stock, par value $0.10 per share	F	2542	$39.45	Disposed	138904	Direct

Footnotes

F1: Settlement of performance-vested restricted stock units that were granted in 2020, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period from January 1, 2020 through December 31, 2022 (the "2020-2022 PSUs"). The shares underlying the 2020-2022 PSUs became payable as of February 23, 2023 following certification of the Issuer's achievement of such performance criteria by the Personnel and Compensation Committee of the Issuer's Board of Directors.

F2: Shares withheld for payment of taxes in connection with the February 23, 2022 settlement of the 2020-2022 PSUs.

F3: Represents the average of the high and low trading prices for one share of the Issuer's common stock on the New York Stock Exchange on February 23, 2023.

F4: Shares withheld for payment of taxes on restricted stock units awarded on February 24, 2020. One-third of such restricted stock units vested by their terms on February 24, 2023.

F5: Represents the average of the high and low trading prices for one share of the Issuer's common stock on the New York Stock Exchange on February 24, 2023.