ATI INC — Director's Dealing 2019

May 15, 2019

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ALLEGHENY TECHNOLOGIES INC (ATI)
CIK: 0001018963
Period of Report: 2019-05-10

Reporting Person: HARVEY J BRETT (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2019-05-10	Common Stock, par value $0.10 per share	F	56	$23.72	Disposed	42599.815	Direct
2019-05-13	Common Stock, par value $0.10 per share	A	7145	$0.00	Acquired	49744.815	Direct
2019-05-14	Common Stock, par value $0.10 per share	F	46	$22.74	Disposed	49698.815	Direct

Footnotes

F1: Shares withheld for payment of taxes in connection with the May 10, 2019 vesting of restricted stock granted in May 2016.

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 May 10, 2019.

F3: Annual Director award under the Issuer's 2017 Incentive Plan as part of the Issuer's Director compensation program. Includes 4,397 shares representing Mr. Harvey's annual director award and 2,748 shares that Mr. Harvey elected to receive in lieu of a portion of his 2019 cash retainer.

F4: Shares withheld for payment of taxes in connection with the May 14, 2019 vesting of restricted stock granted in May 2018.

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 May 14, 2019.