<SEC-DOCUMENT>0001193125-21-106350-index.html : 20210405 <SEC-HEADER>0001193125-21-106350.hdr.sgml : 20210405 <ACCEPTANCE-DATETIME>20210405161716 ACCESSION NUMBER: 0001193125-21-106350 CONFORMED SUBMISSION TYPE: DEF 14A PUBLIC DOCUMENT COUNT: 85 CONFORMED PERIOD OF REPORT: 20210520 FILED AS OF DATE: 20210405 DATE AS OF CHANGE: 20210405 FILER: COMPANY DATA: COMPANY CONFORMED NAME: ALLEGHENY TECHNOLOGIES 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: DEF 14A SEC ACT: 1934 Act SEC FILE NUMBER: 001-12001 FILM NUMBER: 21805557 BUSINESS ADDRESS: STREET 1: 1000 SIX PPG PLACE CITY: PITTSBURGH STATE: PA ZIP: 15222 BUSINESS PHONE: 4123942800 MAIL ADDRESS: STREET 1: 100 SIX PPG PLACE CITY: PITTSBURGH STATE: PA ZIP: 15222 FORMER COMPANY: FORMER CONFORMED NAME: ALLEGHENY TELEDYNE INC DATE OF NAME CHANGE: 19960716 </SEC-HEADER> <DOCUMENT> <TYPE>DEF 14A <SEQUENCE>1 <FILENAME>d12507ddef14a.htm <DESCRIPTION>DEF 14A <TEXT> Document 1 - file: d12507ddef14a.htm
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