ATI Inc.

Last updated September 27, 2026

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Organization details

Legal name: ATI Inc.
Former names: Allegheny Technologies Inc Allegheny Teledyne Inc
Ownership: Public
Status: Active
Sector (GICS): Materials
SIC code: 3317 — Steel Pipe & Tubes
Jurisdiction of incorporation: Delaware
Headquarters city: Dallas
Headquarters state / province: Texas
Headquarters country: United States
Fiscal year end: December
Ticker symbol: ATI
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0001018963
EIN: 25-1792394
Wikidata ID: Q1361648

Board of directors

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Carolyn Corvi · Director
Since 2023
David J. Morehouse · Director
Since 2023
David P. Hess · Director
Since 2023
Elizabeth Hefley Lund · Director
Since 2025
Herbert J. Carlisle · Director
Since 2023
J. Brett Harvey · Director
Since 2023
James C. Diggs · Director
Since 2023
Jean Lydon-Rodgers · Director
Since 2025
Kimberly A. Fields · Director · Chair, President and CEO
Since 2024
M. Leroy Ball · Director
Since 2023
Marianne Kah · Director
Since 2023
Robert S. Wetherbee · Director · Executive Chairman
Since 2023
Ruby Sharma · Director
Since 2023

Chief executives

Robert S. Wetherbee · Board Chair, President and CEO

Dates unknown

Kimberly A. Fields · President & CEO

Dates unknown

Director election results

Annual meeting of May 14, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

8 of this board's directors also sit on 13 other boards. 2 are in the same sector.

Shared director Other board Same sector

Brandywine Realty Trust
via James C. Diggs
Commercial Metals Company Same sector
via Robert S. Wetherbee
GATX Corporation
via Robert S. Wetherbee
Hyster-Yale Inc.
via Carolyn Corvi
Koppers Holdings Inc. Same sector
via M. Leroy Ball
L3Harris Technologies Inc.
via Kimberly A. Fields
Silgan Holdings Inc.
via Kimberly A. Fields
SoundThinking Inc.
via Ruby Sharma
Southwest Airlines Company
via David P. Hess
Southwest Gas Holdings Inc.
via Ruby Sharma
United Airlines Holdings Inc.
via Carolyn Corvi
Warrior Met Coal Inc.
via J. Brett Harvey
Woodward Inc.
via David P. Hess

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $80,599,365; 53 sales by 5 insiders

Date	Insider	Transaction	Shares	Price	Value
Sep 21, 2026	Harris Timothy J Officer (Senior VP and CDIO)	Open-market sale	−9,000	$191.82	$1,726,380
Sep 14, 2026	Harris Timothy J Officer (Senior VP and CDIO)	Open-market sale	−16,500	$193.06	$3,185,490
Sep 8, 2026	Harris Timothy J Officer (Senior VP and CDIO)	Open-market sale	−16,500	$207.54	$3,424,410
Sep 2, 2026	David J. Morehouse Director	Open-market sale	−2,485	$201.61	$501,001
Aug 31, 2026	Harris Timothy J Officer (Senior VP and CDIO)	Open-market sale	−16,500	$210.01	$3,465,165
Aug 24, 2026	Harris Timothy J Officer (Senior VP and CDIO)	Open-market sale	−16,500	$206.92	$3,414,180
Aug 17, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−1,000	$228.32	$228,320
Aug 17, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−2,000	$229.56	$459,120
Aug 17, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−8,131	$230.66	$1,875,496
Aug 17, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−9,116	$231.72	$2,112,360
Aug 17, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−4,598	$232.43	$1,068,713
Jul 28, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−31,757	$190.99	$6,065,269
Jul 7, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−2,000	$179.25	$358,500
Jul 7, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−2,000	$180.00	$360,000
Jul 7, 2026	Kimberly A. Fields Director, Officer (Chair, President and CEO)	Open-market sale	−200	$180.85	$36,170

Peers

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Questions about ATI Inc.

Who is the CEO of ATI Inc.?

Robert S. Wetherbee is ATI Inc.'s Board Chair, President and CEO.

How many directors are on ATI Inc.'s board?

ATI Inc.'s board has 13 directors: Carolyn Corvi, David J. Morehouse, David P. Hess, Elizabeth Hefley Lund, Herbert J. Carlisle, J. Brett Harvey, James C. Diggs, Jean Lydon-Rodgers, Kimberly A. Fields, M. Leroy Ball and 3 others.

Are ATI Inc. insiders buying or selling shares?

Over the last 12 months, ATI Inc. insiders made no open-market purchases and sold $80.6 million of shares in 53 sales on the open market, as reported to the SEC on Forms 4 and 5.

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