0001959173-23-003832.txt : 20230908 0001959173-23-003832.hdr.sgml : 20230908 20230908115441 ACCESSION NUMBER: 0001959173-23-003832 CONFORMED SUBMISSION TYPE: 144 PUBLIC DOCUMENT COUNT: 1 FILED AS OF DATE: 20230908 DATE AS OF CHANGE: 20230908 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: ATI INC CENTRAL INDEX KEY: 0001018963 STANDARD INDUSTRIAL CLASSIFICATION: STEEL PIPE & TUBES [3317] IRS NUMBER: 251792394 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: 144 SEC ACT: 1933 Act SEC FILE NUMBER: 001-12001 FILM NUMBER: 231244350 BUSINESS ADDRESS: STREET 1: 2021 MCKINNEY AVENUE CITY: DALLAS STATE: TX ZIP: 75201 BUSINESS PHONE: 4123942800 MAIL ADDRESS: STREET 1: 2021 MCKINNEY AVENUE CITY: DALLAS STATE: TX ZIP: 75201 FORMER COMPANY: FORMER CONFORMED NAME: ALLEGHENY TECHNOLOGIES INC DATE OF NAME CHANGE: 19991213 FORMER COMPANY: FORMER CONFORMED NAME: ALLEGHENY TELEDYNE INC DATE OF NAME CHANGE: 19960716 REPORTING-OWNER: COMPANY DATA: COMPANY CONFORMED NAME: DIGGS JAMES C CENTRAL INDEX KEY: 0001200401 FILING VALUES: FORM TYPE: 144 MAIL ADDRESS: STREET 1: 1000 SIX PPG PL CITY: PITTSBURGH STATE: PA ZIP: 15222 144 1 primary_doc.xml 144 0001200401 XXXXXXXX LIVE 0001018963 ATI INC 001-12001 2021 MCKINNEY AVENUE DALLAS TX 75201 4123942800 DIGGS JAMES C Director Common Fidelity Brokerage Services LLC

900 Salem Street Smithfield RI 02917

2674 120062.60 128584727 09/08/2023 NYSE Common 05/07/2013 Restricted Stock Vesting Issuer N 5 05/07/2013 Compensation Common 05/10/2019 Restricted Stock Vesting Issuer N 575 05/10/2019 Compensation Common 05/25/2022 Restricted Stock Vesting Issuer N 2094 05/25/2022 Compensation Y 09/08/2023 06/09/2023 /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for James C Diggs