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ATI US​

Ati Inc(ATI US)

$156.88-4.963.06%Ext:$164.10+7.224.60%(Market Closed · 00:00:03 UTC)

Overview

ProfileEntity Structure

Documents

SEC Filings
CategorizedChronologicalBy Owner

Financials & Metrics

FinancialsChartingShort InterestEmployees

SEC Filings by Owner

Insider Ownership

HARSHMAN RICHARD J(59)

  • 4Statement of changes in beneficial ownership1 Mar 2019
  • 4Statement of changes in beneficial ownership27 Feb 2019
  • 4Statement of changes in beneficial ownership22 Feb 2019
  • 4Statement of changes in beneficial ownership3 Dec 2018
  • 4Statement of changes in beneficial ownership5 Mar 2018
  • 4Statement of changes in beneficial ownership27 Feb 2018
  • 4Statement of changes in beneficial ownership22 Feb 2018
  • 4Statement of changes in beneficial ownership24 Jan 2018
  • 4Statement of changes in beneficial ownership27 Feb 2017
  • 4Statement of changes in beneficial ownership31 Jan 2017

Schwartz Karl D(47)

  • 4Statement of changes in beneficial ownership14 Sep 2022
  • 4Statement of changes in beneficial ownership15 Aug 2022
  • 4Statement of changes in beneficial ownership1 Aug 2022
  • 4Statement of changes in beneficial ownership18 May 2022
  • 4Statement of changes in beneficial ownership2 Mar 2022
  • 4Statement of changes in beneficial ownership28 Feb 2022
  • 4Statement of changes in beneficial ownership6 Jan 2022
  • 4Statement of changes in beneficial ownership3 Mar 2021
  • 4Statement of changes in beneficial ownership26 Feb 2021
  • 4Statement of changes in beneficial ownership24 Feb 2021

WETHERBEE ROBERT S(47)

  • 4Statement of changes in beneficial ownership19 Feb
  • 4Statement of changes in beneficial ownership7 Jan
  • 4Statement of changes in beneficial ownership19 Dec 2025
  • 4Statement of changes in beneficial ownership20 Nov 2025
  • 4Statement of changes in beneficial ownership6 Aug 2025
  • 4Statement of changes in beneficial ownership16 Jun 2025
  • 4Statement of changes in beneficial ownership5 Jun 2025
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership8 May 2025
  • 4Statement of changes in beneficial ownership7 Jan 2025

Davis Elliot S(45)

  • 4Statement of changes in beneficial ownership4 Mar 2024
  • 4Statement of changes in beneficial ownership11 Jan 2024
  • 4Statement of changes in beneficial ownership8 Jan 2024
  • 4Statement of changes in beneficial ownership5 Jan 2024
  • 4Statement of changes in beneficial ownership12 Jul 2023
  • 4Statement of changes in beneficial ownership3 Jul 2023
  • 4Statement of changes in beneficial ownership14 Jun 2023
  • 4Statement of changes in beneficial ownership27 Feb 2023
  • 4Statement of changes in beneficial ownership10 Feb 2023
  • 4Statement of changes in beneficial ownership5 Jan 2023

DIGGS JAMES C(40)

  • 4Statement of changes in beneficial ownership12 Sep 2023
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership21 Jul 2022
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership19 May 2020
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership19 Jun 2019
  • 4Statement of changes in beneficial ownership14 May 2019

CREEL DIANE C(35)

  • 4Statement of changes in beneficial ownership19 May 2020
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019
  • 4Statement of changes in beneficial ownership16 May 2018
  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership29 Sep 2014
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership6 May 2013
  • 4Statement of changes in beneficial ownership15 May 2012

ROHR JAMES E(35)

  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019
  • 4Statement of changes in beneficial ownership16 May 2018
  • 4Statement of changes in beneficial ownership17 May 2017
  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership27 Jul 2015
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership26 Aug 2014
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership13 Mar 2014

WALTON JON D(35)

  • 4Statement of changes in beneficial ownership28 Feb 2011
  • 4Statement of changes in beneficial ownership2 Feb 2011
  • 4Statement of changes in beneficial ownership4 Jan 2011
  • 4Statement of changes in beneficial ownership26 Feb 2010
  • 4Statement of changes in beneficial ownership3 Feb 2010
  • 4Statement of changes in beneficial ownership6 Jan 2010
  • 4Statement of changes in beneficial ownership20 Feb 2009
  • 4Statement of changes in beneficial ownership28 Jan 2009
  • 4Statement of changes in beneficial ownership25 Feb 2008
  • 4Statement of changes in beneficial ownership30 Jan 2008

KITTENBRINK DOUGLAS A(33)

  • 4Statement of changes in beneficial ownership28 Jan 2009
  • 4Statement of changes in beneficial ownership29 Apr 2008
  • 4Statement of changes in beneficial ownership25 Feb 2008
  • 4Statement of changes in beneficial ownership30 Jan 2008
  • 4Statement of changes in beneficial ownership2 Aug 2007
  • 4Statement of changes in beneficial ownership9 Mar 2007
  • 4Statement of changes in beneficial ownership6 Mar 2007
  • 4Statement of changes in beneficial ownership23 Feb 2007
  • 4Statement of changes in beneficial ownership2 Feb 2007
  • 4Statement of changes in beneficial ownership31 Jan 2007

REID DALE G(33)

  • 4Statement of changes in beneficial ownership4 Mar 2013
  • 4Statement of changes in beneficial ownership22 Feb 2013
  • 4Statement of changes in beneficial ownership30 Jan 2013
  • 4Statement of changes in beneficial ownership24 Feb 2012
  • 4Statement of changes in beneficial ownership1 Feb 2012
  • 4Statement of changes in beneficial ownership28 Feb 2011
  • 4Statement of changes in beneficial ownership2 Feb 2011
  • 4Statement of changes in beneficial ownership4 Jan 2011
  • 4Statement of changes in beneficial ownership26 Feb 2010
  • 4Statement of changes in beneficial ownership3 Feb 2010

Fields Kimberly A(33)

  • 4Statement of changes in beneficial ownership19 Aug
  • 4Statement of changes in beneficial ownership30 Jul
  • 4Statement of changes in beneficial ownership9 Jul
  • 4Statement of changes in beneficial ownership24 Jun
  • 4Statement of changes in beneficial ownership4 Jun
  • 4Statement of changes in beneficial ownership12 May
  • 4Statement of changes in beneficial ownership7 Jan
  • 4Statement of changes in beneficial ownership9 Dec 2025
  • 4Statement of changes in beneficial ownership16 Oct 2025
  • 4Statement of changes in beneficial ownership8 Oct 2025

Harris Timothy J(29)

  • 4Statement of changes in beneficial ownership23 Sep
  • 4Statement of changes in beneficial ownership16 Sep
  • 4Statement of changes in beneficial ownership10 Sep
  • 4Statement of changes in beneficial ownership2 Sep
  • 4Statement of changes in beneficial ownership26 Aug
  • 4Statement of changes in beneficial ownership7 Jan
  • 4Statement of changes in beneficial ownership9 Dec 2025
  • 4Statement of changes in beneficial ownership25 Nov 2025
  • 4Statement of changes in beneficial ownership20 Nov 2025
  • 4Statement of changes in beneficial ownership12 Nov 2025

TURNER JOHN D(28)

  • 4Statement of changes in beneficial ownership7 Dec 2018
  • 4Statement of changes in beneficial ownership16 May 2018
  • 4Statement of changes in beneficial ownership17 May 2017
  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership4 Mar 2015
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership28 Feb 2014
  • 4Statement of changes in beneficial ownership6 May 2013
  • 4Statement of changes in beneficial ownership15 May 2012

Kramer Kevin B(28)

  • 4Statement of changes in beneficial ownership18 Apr 2022
  • 4Statement of changes in beneficial ownership9 Mar 2022
  • 4Statement of changes in beneficial ownership2 Mar 2022
  • 4Statement of changes in beneficial ownership28 Feb 2022
  • 4Statement of changes in beneficial ownership6 Jan 2022
  • 4Statement of changes in beneficial ownership3 Jun 2021
  • 4Statement of changes in beneficial ownership17 Mar 2021
  • 4Statement of changes in beneficial ownership3 Mar 2021
  • 4Statement of changes in beneficial ownership26 Feb 2021
  • 4Statement of changes in beneficial ownership24 Feb 2021

HASSEY L PATRICK(26)

  • 4Statement of changes in beneficial ownership28 Feb 2011
  • 4Statement of changes in beneficial ownership2 Feb 2011
  • 4Statement of changes in beneficial ownership4 Jan 2011
  • 4Statement of changes in beneficial ownership26 Feb 2010
  • 4Statement of changes in beneficial ownership3 Feb 2010
  • 4Statement of changes in beneficial ownership6 Jan 2010
  • 4Statement of changes in beneficial ownership20 Feb 2009
  • 4Statement of changes in beneficial ownership28 Jan 2009
  • 4Statement of changes in beneficial ownership29 Jul 2008
  • 4Statement of changes in beneficial ownership25 Feb 2008

BOZZONE ROBERT P(25)

  • 4Statement of changes in beneficial ownership4 May 2007
  • 4Statement of changes in beneficial ownership6 Jul 2006
  • 4Statement of changes in beneficial ownership8 May 2006
  • 4Statement of changes in beneficial ownership8 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006

HARVEY J BRETT(25)

  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership27 Dec 2023
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership19 May 2020
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019

DUNLAP TERRY L(25)

  • 4Statement of changes in beneficial ownership28 Oct 2014
  • 4Statement of changes in beneficial ownership28 Oct 2014
  • 4Statement of changes in beneficial ownership28 Oct 2014
  • 4Statement of changes in beneficial ownership25 Jul 2014
  • 4Statement of changes in beneficial ownership25 Jul 2014
  • 4Statement of changes in beneficial ownership28 Feb 2014
  • 4Statement of changes in beneficial ownership29 Jan 2014
  • 4Statement of changes in beneficial ownership4 Mar 2013
  • 4Statement of changes in beneficial ownership22 Feb 2013
  • 4Statement of changes in beneficial ownership30 Jan 2013

THOMAS LOUIS J(23)

  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership15 Jul 2013
  • 4Statement of changes in beneficial ownership6 May 2013
  • 4Statement of changes in beneficial ownership15 May 2012
  • 4Statement of changes in beneficial ownership2 May 2012
  • 4Statement of changes in beneficial ownership13 May 2011
  • 4Statement of changes in beneficial ownership3 May 2011
  • 4Statement of changes in beneficial ownership11 May 2010

SHILLING JACK W(22)

  • 4Statement of changes in beneficial ownership23 Feb 2007
  • 4Statement of changes in beneficial ownership2 Feb 2007
  • 4Statement of changes in beneficial ownership2 Feb 2007
  • 4Statement of changes in beneficial ownership31 Jan 2007
  • 4Statement of changes in beneficial ownership21 Nov 2006
  • 4Statement of changes in beneficial ownership21 Nov 2006
  • 4Statement of changes in beneficial ownership24 Feb 2006
  • 4Statement of changes in beneficial ownership1 Feb 2006
  • 4Statement of changes in beneficial ownership12 Jan 2006
  • 4Statement of changes in beneficial ownership8 Aug 2005

Powers Elizabeth C(22)

  • 4Statement of changes in beneficial ownership2 Mar 2022
  • 4Statement of changes in beneficial ownership28 Feb 2022
  • 4Statement of changes in beneficial ownership3 Mar 2021
  • 4Statement of changes in beneficial ownership26 Feb 2021
  • 4Statement of changes in beneficial ownership24 Feb 2021
  • 4Statement of changes in beneficial ownership6 Jan 2021
  • 4Statement of changes in beneficial ownership28 Feb 2020
  • 4Statement of changes in beneficial ownership26 Feb 2020
  • 4Statement of changes in beneficial ownership24 Feb 2020
  • 4Statement of changes in beneficial ownership15 Aug 2019

Sims John D(20)

  • 4Statement of changes in beneficial ownership28 Feb 2020
  • 4Statement of changes in beneficial ownership26 Feb 2020
  • 4Statement of changes in beneficial ownership24 Feb 2020
  • 4Statement of changes in beneficial ownership1 Mar 2019
  • 4Statement of changes in beneficial ownership27 Feb 2019
  • 4Statement of changes in beneficial ownership22 Feb 2019
  • 4Statement of changes in beneficial ownership30 Apr 2018
  • 4Statement of changes in beneficial ownership5 Mar 2018
  • 4Statement of changes in beneficial ownership27 Feb 2018
  • 4Statement of changes in beneficial ownership22 Feb 2018

Corvi Carolyn(19)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership19 May 2020
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019

Joyce Michael(18)

  • 4Statement of changes in beneficial ownership6 May 2013
  • 4Statement of changes in beneficial ownership15 May 2012
  • 4Statement of changes in beneficial ownership3 May 2011
  • 4Statement of changes in beneficial ownership11 May 2010
  • 4Statement of changes in beneficial ownership11 May 2009
  • 4Statement of changes in beneficial ownership5 Aug 2008
  • 4Statement of changes in beneficial ownership13 May 2008
  • 4Statement of changes in beneficial ownership4 May 2007
  • 4Statement of changes in beneficial ownership8 Nov 2006
  • 4Statement of changes in beneficial ownership6 Jul 2006

Morehouse David J(17)

  • 4Statement of changes in beneficial ownership4 Sep
  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership11 Mar
  • 4Statement of changes in beneficial ownership6 Aug 2025
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership3 Apr 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021

JEREMIAH BARABARA S(16)

  • 4Statement of changes in beneficial ownership28 Jan 2019
  • 4Statement of changes in beneficial ownership16 May 2018
  • 4Statement of changes in beneficial ownership17 May 2017
  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership6 May 2013
  • 4Statement of changes in beneficial ownership15 May 2012
  • 4Statement of changes in beneficial ownership3 May 2011
  • 4Statement of changes in beneficial ownership11 May 2010

NEWMAN DONALD P(16)

  • 4Statement of changes in beneficial ownership7 Jan 2025
  • 4Statement of changes in beneficial ownership11 Jan 2024
  • 4Statement of changes in beneficial ownership5 Jan 2024
  • 4Statement of changes in beneficial ownership27 Feb 2023
  • 4Statement of changes in beneficial ownership5 Jan 2023
  • 4/AStatement of changes in beneficial ownership (amendment)25 Mar 2022
  • 4Statement of changes in beneficial ownership28 Feb 2022
  • 4/AStatement of changes in beneficial ownership (amendment)25 Mar 2022
  • 4Statement of changes in beneficial ownership7 Jan 2022
  • 4Statement of changes in beneficial ownership6 Jan 2022

Dalton Hunter R(16)

  • 4Statement of changes in beneficial ownership1 Feb 2016
  • 4Statement of changes in beneficial ownership27 Feb 2015
  • 4Statement of changes in beneficial ownership26 Jan 2015
  • 4Statement of changes in beneficial ownership28 Feb 2014
  • 4Statement of changes in beneficial ownership29 Jan 2014
  • 4Statement of changes in beneficial ownership4 Mar 2013
  • 4Statement of changes in beneficial ownership22 Feb 2013
  • 4Statement of changes in beneficial ownership30 Jan 2013
  • 4Statement of changes in beneficial ownership24 Feb 2012
  • 4Statement of changes in beneficial ownership1 Feb 2012

DeCourcy Patrick J(16)

  • 4Statement of changes in beneficial ownership1 Mar 2019
  • 4Statement of changes in beneficial ownership27 Feb 2019
  • 4Statement of changes in beneficial ownership22 Feb 2019
  • 4Statement of changes in beneficial ownership5 Mar 2018
  • 4Statement of changes in beneficial ownership27 Feb 2018
  • 4Statement of changes in beneficial ownership22 Feb 2018
  • 4Statement of changes in beneficial ownership24 Jan 2018
  • 4Statement of changes in beneficial ownership27 Feb 2017
  • 4Statement of changes in beneficial ownership31 Jan 2017
  • 4Statement of changes in beneficial ownership29 Feb 2016

MCCLELLAND CRAIG W(15)

  • 4Statement of changes in beneficial ownership4 May 2007
  • 4Statement of changes in beneficial ownership6 Jul 2006
  • 4Statement of changes in beneficial ownership8 May 2006
  • 4Statement of changes in beneficial ownership6 Feb 2006
  • 4Statement of changes in beneficial ownership5 Jan 2006
  • 4Statement of changes in beneficial ownership22 Sep 2005
  • 4Statement of changes in beneficial ownership6 Jul 2005
  • 4Statement of changes in beneficial ownership26 Apr 2005
  • 4Statement of changes in beneficial ownership5 Jan 2005
  • 4Statement of changes in beneficial ownership6 Jul 2004

BALL M LEROY(13)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership19 Feb
  • 4Statement of changes in beneficial ownership21 Nov 2025
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 5Annual statement of beneficial ownership14 Feb 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2020

Pipski John R(13)

  • 4Statement of changes in beneficial ownership19 May 2020
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019
  • 4Statement of changes in beneficial ownership16 May 2018
  • 4Statement of changes in beneficial ownership17 May 2017
  • 4Statement of changes in beneficial ownership12 May 2016
  • 4Statement of changes in beneficial ownership23 Oct 2015
  • 4Statement of changes in beneficial ownership7 May 2015
  • 4Statement of changes in beneficial ownership5 May 2014
  • 4Statement of changes in beneficial ownership6 May 2013

Kah Marianne(12)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership17 Mar 2020
  • 4/AStatement of changes in beneficial ownership (amendment)17 Sep 2019

BOWEN H KENT(11)

  • 4Statement of changes in beneficial ownership13 May 2008
  • 4Statement of changes in beneficial ownership4 May 2007
  • 4Statement of changes in beneficial ownership6 Jul 2006
  • 4Statement of changes in beneficial ownership8 May 2006
  • 4Statement of changes in beneficial ownership5 Jan 2006
  • 4Statement of changes in beneficial ownership6 Jul 2005
  • 4Statement of changes in beneficial ownership26 Apr 2005
  • 4Statement of changes in beneficial ownership5 Jan 2005
  • 4Statement of changes in beneficial ownership6 Jul 2004
  • 4Statement of changes in beneficial ownership10 May 2004

Hess David P(11)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4/AStatement of changes in beneficial ownership (amendment)17 Sep 2019
  • 4Statement of changes in beneficial ownership5 Aug 2019

Carlisle Herbert J(11)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 4Statement of changes in beneficial ownership19 May 2022
  • 4Statement of changes in beneficial ownership26 May 2021
  • 4Statement of changes in beneficial ownership14 May 2021
  • 4Statement of changes in beneficial ownership14 May 2020
  • 4Statement of changes in beneficial ownership14 May 2019
  • 4Statement of changes in beneficial ownership16 May 2018

Busch Tina Killough(11)

  • 4Statement of changes in beneficial ownership25 Nov 2025
  • 4Statement of changes in beneficial ownership14 Oct 2025
  • 4Statement of changes in beneficial ownership7 Feb 2025
  • 4Statement of changes in beneficial ownership7 Jan 2025
  • 4Statement of changes in beneficial ownership6 Dec 2024
  • 4Statement of changes in beneficial ownership18 Oct 2024
  • 4Statement of changes in beneficial ownership5 Jan 2024
  • 4Statement of changes in beneficial ownership12 Oct 2023
  • 4Statement of changes in beneficial ownership5 Jan 2023
  • 4Statement of changes in beneficial ownership12 Oct 2022

QUEENAN JR CHARLES J(7)

  • 4Statement of changes in beneficial ownership5 Jan 2005
  • 4Statement of changes in beneficial ownership6 Jul 2004
  • 4Statement of changes in beneficial ownership10 May 2004
  • 4MAIN DOCUMENT DESCRIPTION6 Jan 2004
  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4CHARLES J. QUEENAN3 Jan 2003

Bhatia Vaishali S.(7)

  • 4Statement of changes in beneficial ownership24 Mar
  • 4Statement of changes in beneficial ownership7 Jan
  • 4Statement of changes in beneficial ownership9 Dec 2025
  • 4Statement of changes in beneficial ownership21 Mar 2025
  • 4Statement of changes in beneficial ownership7 Jan 2025
  • 4Statement of changes in beneficial ownership22 Mar 2024
  • 3Initial statement of beneficial ownership22 Mar 2024

Miller Michael Benjamin(7)

  • 4Statement of changes in beneficial ownership3 Mar
  • 4Statement of changes in beneficial ownership7 Jan
  • 4Statement of changes in beneficial ownership9 Dec 2025
  • 4Statement of changes in beneficial ownership21 Mar 2025
  • 4Statement of changes in beneficial ownership7 Jan 2025
  • 4Statement of changes in beneficial ownership5 Mar 2024
  • 3Initial statement of beneficial ownership5 Mar 2024

MURDY JAMES L(6)

  • 4MAIN DOCUMENT DESCRIPTION15 Sep 2003
  • 4ALLEGHENY TECHNOLOGIES14 Mar 2003
  • 4JAMES L. MURDY28 Feb 2003
  • 4Statement of changes in beneficial ownership13 Feb 2003
  • 4ALLEGHENY TECHNOLOGIES INC.27 Jan 2003
  • 5Annual statement of beneficial ownership3 Feb 2003

CAHOUET FRANK V(6)

  • 4Statement of changes in beneficial ownership6 Jul 2004
  • 4Statement of changes in beneficial ownership10 May 2004
  • 4MAIN DOCUMENT DESCRIPTION6 Jan 2004
  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4FRANK V. CAHOUET3 Jan 2003

Davis Lynn D(6)

  • 4Statement of changes in beneficial ownership2 Feb 2011
  • 4Statement of changes in beneficial ownership4 Jan 2011
  • 4Statement of changes in beneficial ownership26 Feb 2010
  • 4Statement of changes in beneficial ownership3 Feb 2010
  • 4Statement of changes in beneficial ownership6 Jan 2010
  • 3Initial statement of beneficial ownership18 Dec 2009

Sharma Ruby(5)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership22 May 2025
  • 4Statement of changes in beneficial ownership23 May 2024
  • 4Statement of changes in beneficial ownership17 May 2023
  • 3Initial statement of beneficial ownership13 Mar 2023

Williams Jimmy Jr.(5)

  • 4Statement of changes in beneficial ownership7 Jan 2025
  • 4Statement of changes in beneficial ownership5 Jan 2024
  • 4Statement of changes in beneficial ownership27 Feb 2023
  • 4Statement of changes in beneficial ownership5 Jan 2023
  • 3Initial statement of beneficial ownership8 Nov 2022

FETTEROLF C FREDERICK(4)

  • 4MAIN DOCUMENT DESCRIPTION6 Jan 2004
  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4C. FRED FETTEROLF3 Jan 2003

OUCHI WILLIAM G(4)

  • 4MAIN DOCUMENT DESCRIPTION6 Jan 2004
  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4WILLIAM G. OUCHI3 Jan 2003

BRENTLINGER PAUL S(4)

  • 4MAIN DOCUMENT DESCRIPTION6 Jan 2004
  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4PAUL S. BRENTLINGER3 Jan 2003

Hogan David M(4)

  • 4Statement of changes in beneficial ownership24 Feb 2012
  • 4Statement of changes in beneficial ownership1 Feb 2012
  • 3Initial statement of beneficial ownership16 Dec 2011
  • 4Statement of changes in beneficial ownership16 Dec 2011

KOURPIAS GEORGE J(3)

  • 4MAIN DOCUMENT DESCRIPTION3 Jul 2003
  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4GEORGE J. KOURPIAS3 Jan 2003

Lund Elizabeth Hefley(3)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership21 Nov 2025
  • 3Initial statement of beneficial ownership12 Nov 2025

Lydon-Rodgers Jean(3)

  • 4Statement of changes in beneficial ownership21 May
  • 4Statement of changes in beneficial ownership21 Nov 2025
  • 3Initial statement of beneficial ownership12 Nov 2025

Foster James Robert(3)

  • 4Statement of changes in beneficial ownership6 Jul
  • 4Statement of changes in beneficial ownership23 Jan
  • 3Initial statement of beneficial ownership23 Jan

SIMMONS RICHARD P(2)

  • 4Statement of changes in beneficial ownership11 Sep 2000
  • 3Initial statement of beneficial ownership16 Jun 2000

SIMMONS BRIAN P(2)

  • 4MAIN DOCUMENT DESCRIPTION12 May 2003
  • 4BRIAN P. SIMMONS3 Jan 2003

VROMAN GARY J(2)

  • 4Statement of changes in beneficial ownership4 Mar 2013
  • 3Initial statement of beneficial ownership14 Dec 2012

Washington Netta(2)

  • 4Statement of changes in beneficial ownership3 May 2024
  • 3Initial statement of beneficial ownership3 May 2024

≥5% Ownership

VANGUARD GROUP INC(17)

  • SC 13G/AAti Inc26 Mar
  • SC 13G/AAti Inc30 Apr 2025
  • SC 13G/AAti Inc13 Feb 2024
  • SC 13G/AAti Inc9 Feb 2023
  • SC 13G/AAllegheny Technologies Inc9 Feb 2022
  • SC 13G/AAllegheny Technologies Inc10 Feb 2021
  • SC 13G/AAllegheny Technologies Inc10 Feb 2020
  • SC 13G/AAllegheny Technologies Inc10 Feb 2020
  • SC 13G/AAllegheny Technologies Inc11 Feb 2019
  • SC 13G/AAllegheny Technologies Inc12 Feb 2018

BlackRock Inc.(17)

  • SC 13G/AAti Inc22 Jan 2024
  • SC 13G/AAti Inc26 Jan 2023
  • SC 13GAti Inc20 Jan 2023
  • SC 13G/AAllegheny Technologies Inc27 Jan 2022
  • SC 13G/AAllegheny Technologies Inc26 Jan 2022
  • SC 13G/AAllegheny Technologies Inc5 Feb 2021
  • SC 13G/AAllegheny Technologies Inc10 Feb 2020
  • SC 13G/AAllegheny Technologies Inc11 Feb 2019
  • SC 13G/AAllegheny Technologies Inc8 Feb 2018
  • SC 13G/AAllegheny Technologies Inc9 Jan 2017

Capital International Investors(12)

  • SC 13G/AAti Inc7 Apr
  • SC 13G/AAti Inc13 Nov 2025
  • SC 13G/AAti Inc14 Feb 2025
  • SC 13G/AAti Inc9 Feb 2024
  • SC 13G/AAti Inc13 Feb 2023
  • SC 13G/AAllegheny Technologies Inc11 Feb 2022
  • SC 13G/AAllegheny Technologies Inc10 May 2021
  • SC 13GAllegheny Technologies Inc16 Feb 2021
  • SC 13GAllegheny Technologies Inc16 Feb 2021
  • SC 13G/AAllegheny Technologies Inc10 Sep 2020

SIMMONS RICHARD P(10)

  • SC 13D/AAllegheny Technologies Inc31 Jan 2006
  • SC 13D/AAllegheny Technologies Inc11 Oct 2005
  • SC 13D/AAllegheny Technologies Inc16 Sep 2004
  • SC 13D/AAllegheny Technologies Inc22 May 2003
  • SC 13D/AAllegheny Technologies Inc6 Feb 2002
  • SC 13DAllegheny Technologies Inc30 May 2000
  • SC 13D/AAllegheny Technologies Inc4 Apr 2000
  • SC 13D/AAllegheny Teledyne Inc31 Aug 1998
  • SC 13D/AAllegheny Teledyne Inc18 Mar 1997
  • SC 13DAllegheny Teledyne Inc26 Aug 1996

CAPITAL GROUP INTERNATIONAL INC(10)

  • SC 13G/AAllegheny Technologies Inc11 Feb 2013
  • SC 13G/AAllegheny Technologies Inc2 Feb 2012
  • SC 13G/AAllegheny Technologies Inc8 Feb 2011
  • SC 13G/AAllegheny Technologies Inc10 Aug 2010
  • SC 13G/AAllegheny Technologies Inc10 Feb 2010
  • SC 13G/AAllegheny Technologies Inc12 Feb 2009
  • SC 13GAllegheny Technologies Inc8 Aug 2008
  • SC 13G/AAllegheny Technologies Inc13 Feb 2004
  • SC 13G/AAllegheny Technologies Inc14 Feb 2003
  • SC 13GAllegheny Technologies Inc6 Jun 2002

MORGAN J P & CO INC(9)

  • SC 13G/AAllegheny Technologies Inc2 Feb 2000
  • SC 13G/AAllegheny Technologies Inc21 Dec 1999
  • SC 13G/AAllegheny Technologies Inc21 Dec 1999
  • SC 13G/AAllegheny Teledyne Inc9 Dec 1999
  • SC 13G/AAllegheny Teledyne Inc25 Jun 1999
  • SC 13G/AAllegheny Teledyne Inc22 Feb 1999
  • SC 13G/AAllegheny Teledyne Inc13 Feb 1998
  • SC 13G/AAllegheny Teledyne Inc31 Jan 1997
  • SC 13G/AAllegheny Teledyne Inc9 Sep 1996

STATE STREET CORP(9)

  • SC 13G/AAti Inc17 Oct 2024
  • SC 13G/AAti Inc25 Jan 2024
  • SC 13G/AAti Inc1 Feb 2023
  • SC 13G/AAllegheny Technologies Inc10 Feb 2022
  • SC 13GAllegheny Technologies Inc5 Feb 2021
  • SC 13G/AAllegheny Technologies Inc13 Feb 2018
  • SC 13GAllegheny Technologies Inc9 Feb 2017
  • SC 13GAllegheny Technologies Inc5 Feb 2014
  • SC 13GAllegheny Technologies Inc11 Feb 2013

FMR LLC(6)

  • SC 13G/AAti Inc12 May 2025
  • SC 13G/AAti Inc12 Feb 2025
  • SC 13GAti Inc12 Nov 2024
  • SC 13G/AAllegheny Technologies Inc11 Jun 2007
  • SC 13G/AAllegheny Technologies Inc14 Feb 2007
  • SC 13GAllegheny Technologies Inc10 Feb 2006

SINGLETON CAROLINE W(5)

  • SC 13G/AAllegheny Technologies Inc13 Feb 2001
  • SC 13G/AAllegheny Technologies Inc21 Apr 2000
  • SC 13GAllegheny Technologies Inc14 Feb 2000
  • SC 13D/AAllegheny Technologies Inc11 Feb 2000
  • SC 13DAllegheny Teledyne Inc25 Aug 1999

BlackRock, Inc.(5)

  • SC 13G/AAti Inc3 Oct 2025
  • SC 13G/AAti Inc17 Jul 2025
  • SC 13G/AAti Inc17 Apr 2025
  • SC 13G/AAti Inc8 Nov 2024
  • SC 13G/AAti Inc23 Oct 2024

FRANKLIN RESOURCES INC(4)

  • SC 13G/AAllegheny Technologies Inc5 Feb 2018
  • SC 13G/AAllegheny Technologies Inc9 Feb 2017
  • SC 13G/AAllegheny Technologies Inc3 Feb 2016
  • SC 13GAllegheny Technologies Inc9 Feb 2015

CITIGROUP INC(4)

  • SC 13G/AAllegheny Technologies Inc11 Apr 2005
  • SC 13G/AAllegheny Technologies Inc10 Feb 2005
  • SC 13G/AAllegheny Technologies Inc12 Apr 2004
  • SC 13GAllegheny Technologies Inc13 Feb 2004

ALLIANCEBERNSTEIN L.P.(4)

  • SC 13G/AAti Inc14 Feb 2024
  • SC 13G/AAti Inc14 Feb 2024
  • SC 13GAti Inc14 Feb 2023
  • SC 13GAti Inc13 Feb 2023

Capital World Investors(4)

  • SC 13G/AAti Inc14 May
  • SC 13GAti Inc13 Nov 2025
  • SC 13G/AAllegheny Technologies Inc16 Feb 2021
  • SC 13GAllegheny Technologies Inc14 Feb 2020

DIMENSIONAL FUND ADVISORS LP(3)

  • SC 13G/AAllegheny Technologies Inc8 Feb 2022
  • SC 13G/AAllegheny Technologies Inc12 Feb 2021
  • SC 13GAllegheny Technologies Inc12 Feb 2020

SCUDDER KEMPER INVESTMENTS INC(3)

  • SC 13G/AAllegheny Technologies Inc28 Jan 2000
  • SC 13G/AAllegheny Technologies Inc12 Jan 2000
  • SC 13GAllegheny Teledyne Inc11 Feb 1999

WS MANAGEMENT LLLP(3)

  • SC 13G/AAllegheny Technologies Inc12 Feb 2018
  • SC 13G/AAllegheny Technologies Inc17 Jan 2017
  • SC 13GAllegheny Technologies Inc4 Nov 2016

DELAWARE MANAGEMENT HOLDINGS CO INC(3)

  • SC 13G/AAllegheny Teledyne Inc8 Feb 1999
  • SC 13GAllegheny Teledyne Inc13 Feb 1998
  • SC 13GAllegheny Teledyne Inc11 Feb 1998

D. E. SHAW & CO, L.P.(3)

  • SC 13G/AAllegheny Technologies Inc16 Feb 2021
  • SC 13GAllegheny Technologies Inc18 Sep 2020
  • SC 13GAllegheny Technologies Inc15 Jun 2020

IRIDIAN ASSET MANAGEMENT LLC/CT(3)

  • SC 13G/AAllegheny Technologies Inc6 Feb 2019
  • SC 13G/AAllegheny Technologies Inc6 Feb 2018
  • SC 13GAllegheny Technologies Inc6 Jun 2017

SINGLETON GROUP LLC(3)

  • SC 13G/AAllegheny Technologies Inc6 Feb 2009
  • SC 13G/AAllegheny Technologies Inc17 Aug 2007
  • SC 13GAllegheny Technologies Inc21 Apr 2000

FRONTIER CAPITAL MANAGEMENT CO LLC(3)

  • SC 13G/AAllegheny Technologies Inc14 Feb 2020
  • SC 13G/AAllegheny Technologies Inc11 Feb 2019
  • SC 13GAllegheny Technologies Inc7 Feb 2018

Capital Research Global Investors(3)

  • SC 13G/AAllegheny Technologies Inc16 Feb 2021
  • SC 13G/AAllegheny Technologies Inc14 Feb 2020
  • SC 13GAllegheny Technologies Inc14 Feb 2019

MAORI EUROPEAN HOLDING, S.L.(3)

  • SC 13G/AAllegheny Technologies Inc8 Feb 2012
  • SC 13G/AAllegheny Technologies Inc29 Jun 2011
  • SC 13GAllegheny Technologies Inc9 Jun 2008

CAPITAL RESEARCH & MANAGEMENT CO(2)

  • SC 13GAllegheny Technologies Inc16 Feb 2000
  • SC 13GAllegheny Teledyne Inc11 Feb 1999

J P MORGAN CHASE & CO(2)

  • SC 13G/AAllegheny Technologies Inc11 Feb 2002
  • SC 13G/AAllegheny Technologies Inc12 Feb 2001

SASCO CAPITAL INC / CT/(2)

  • SC 13G/AAllegheny Technologies Inc13 Feb 2017
  • SC 13GAllegheny Technologies Inc12 Feb 2016

TCW GROUP INC(2)

  • SC 13G/AAllegheny Technologies Inc9 Feb 2009
  • SC 13GAllegheny Technologies Inc11 Feb 2008

AXA FINANCIAL INC(2)

  • SC 13G/AAllegheny Technologies Inc13 Feb 2007
  • SC 13GAllegheny Technologies Inc14 Feb 2006

WELLINGTON MANAGEMENT CO LLP(2)

  • SC 13G/AAllegheny Technologies Inc14 Feb 2006
  • SC 13GAllegheny Technologies Inc14 Feb 2005

TRUSTEES OF GENERAL ELECTRIC PENSION TRUST(2)

  • SC 13G/AAllegheny Technologies Inc14 Feb 2012
  • SC 13GAllegheny Technologies Inc14 Feb 2011

PERRY CORP(2)

  • SC 13G/AAllegheny Technologies Inc12 Feb 2007
  • SC 13GAllegheny Technologies Inc13 Feb 2006

SINGLETON HENRY E(2)

  • SC 13D/AAllegheny Teledyne Inc25 Aug 1999
  • SC 13DAllegheny Teledyne Inc21 Aug 1996

RS INVESTMENT MANAGEMENT CO LLC(2)

  • SC 13G/AAllegheny Technologies Inc11 Feb 2010
  • SC 13GAllegheny Technologies Inc10 Feb 2009

PLATINUM INVESTMENT MANAGEMENT LTD(2)

  • SC 13GAllegheny Technologies Inc15 Feb 2017
  • SC 13GAllegheny Technologies Inc11 Feb 2016

Neuberger Berman Group LLC(2)

  • SC 13G/AAllegheny Technologies Inc10 Feb 2012
  • SC 13GAllegheny Technologies Inc14 Feb 2011

VANGUARD CAPITAL MANAGEMENT LLC(1)

  • SC 13GAti Inc29 Apr