<SEC-DOCUMENT>0001193125-23-204465-index.html : 20230807
<SEC-HEADER>0001193125-23-204465.hdr.sgml : 20230807
<ACCEPTANCE-DATETIME>20230807072901
ACCESSION NUMBER:		0001193125-23-204465
CONFORMED SUBMISSION TYPE:	424B3
PUBLIC DOCUMENT COUNT:		5
FILED AS OF DATE:		20230807
DATE AS OF CHANGE:		20230807

FILER:

	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:		424B3
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-254906
		FILM NUMBER:		231145589

	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
</SEC-HEADER>
<DOCUMENT>
<TYPE>424B3
<SEQUENCE>1
<FILENAME>d530044d424b3.htm
<DESCRIPTION>424B3
<TEXT>
Document 1 - file: d530044d424b3.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>g530044g01n01.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: g530044g01n01.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>g530044g12a12.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: g530044g12a12.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>4
<FILENAME>g530044g18n73.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 4 - file: g530044g18n73.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g530044g99l96.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g530044g99l96.jpg

</DOCUMENT>
</SEC-DOCUMENT>