ROBERT S. WETHERBEE - 28 Feb 2022 Form 4/A - Amendment Insider Report for ALLEGHENY TECHNOLOGIES INC (ATI)

Role: Board Chair, President and CEO, Director
Signature: /s/ Elliot S. Davis, Attorney-in-Fact for Robert S. Wetherbee
Issuer symbol: ATI
Transactions as of: 28 Feb 2022
Transactions value $: -$114,442
Form type: 4/A - Amendment
Filing time: 25 Mar 2022, 17:12:51 UTC
Date Of Original Report: 02 Mar 2022
Previous filing: 25 Mar 2022
Next filing: 02 Sep 2022
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	Tax liability	-$114K	-4.45K	-1.16%	$25.70	381K	28 Feb 2022	Direct	F1, F2

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

Explanation of Responses:

Id	Content
F1	Shares withheld for payment of taxes on restricted stock units awarded in 2019. One-third of such restricted stock units vested by their terms on February 28, 2022.
F2	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 28, 2022.

Remarks:

This amended Form 4 is filed to reflect an administrative correction to the number of shares withheld for the payment of taxes with respect to the vesting of restricted stock units awarded in 2019, as reflected in Table I above.