Robert S. Wetherbee - Jan 9, 2024 Form 4 Insider Report for ATI INC (ATI)

Role: Board Chair and CEO, Director
Signature: /s/ Elliot S. Davis, Attorney-in-Fact for Robert S. Wetherbee
Stock symbol: ATI
Transactions as of: Jan 9, 2024
Transactions value $: -$4,914,382
Form type: 4
Date filed: 1/11/2024, 04:18 PM
Previous filing: Jan 5, 2024
Next filing: Jan 12, 2024
SEC: View on sec.gov

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	Award	$0	+309K	+90.1%	$0.00	652K	Jan 9, 2024	Direct	F1
transaction	ATI	Common Stock, par value $0.10 per share	Tax liability	-$4.91M	-116K	-17.75%	$42.44	536K	Jan 9, 2024	Direct	F2, F3

Showing 1 to 2 of 2 entries

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Settlement of performance-vested restricted stock units that were granted in 2021, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2021 through December 31, 2023 (the "2021-2023 PSUs"). The shares underlying the 2021-2023 PSUs became payable as of January 9, 2024 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.
F2	Shares withheld for payment of taxes in connection with the January 9, 2024 settlement of the 2021-2023 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 January 9, 2024.