ATI INC — Director's Dealing 2022

Feb 28, 2022

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLEGHENY TECHNOLOGIES INC (ATI)
CIK: 0001018963
Period of Report: 2022-02-24

Reporting Person: Powers Elizabeth C (Senior VP, CHRO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2022-02-24	Common Stock, par value $0.10 per share	A	7665	$0.00	Acquired	175504.0351	Direct
2022-02-24	Common Stock, par value $0.10 per share	F	3487	$23.54	Disposed	172017.0351	Direct
2022-02-24	Common Stock, par value $0.10 per share	F	2340	$23.54	Disposed	169677.0351	Direct

Footnotes

F1: Settlement of performance-vested restricted stock units that were granted in 2019, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period form January 1, 2019 through December 31, 2021 (the "2019-2021 PSUs"). The shares underlying the 2019-2021 PSUs became payable as of February 24, 2022 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: This amount includes 1,916.2286 shares of common stock that Ms. Powers owns in the Company's 401(k) Plan. Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method. Ms. Powers holds approximately 1,610 units, which represent interests in the Company's stock fund.

F3: Shares withheld for payment of taxes in connection with the February 24, 2022 settlement of the 2019-2021 PSUs.

F4: 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, 2022.

F5: 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, 2022.