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NYSE · USD

ATI

ATI INC

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Tapewire entity
944
SEC CIK
0001018963
Parsed reports
419

Last 12 months

Inside the activity.

0 purchase rows · 55 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202508
Dec 202503
Jan 202600
Feb 202604
Mar 202602
Apr 202600
May 202607
Jun 202609
Jul 2026011
Aug 202607
Sep 202604
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
November 18, 2025 Filed Nov 21, 2025 01:31 UTC
Harris Timothy JSenior VP and CDIO
SaleCommon Stock, par value $0.10 per share 10,542 $97.77 $1,030,691.34
Disclosure

SEC source: 0001193125-25-290261 · ownership.xml · nonDerivative · entry 1

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 108,852

F1 · shares: Shares sold pursuant to a 10b5-1 Plan dated August 6, 2025.

Read SEC document
November 18, 2025 Filed Nov 21, 2025 01:34 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 26,998 $98.80 $2,667,402.40
Disclosure

SEC source: 0001193125-25-290265 · ownership.xml · nonDerivative · entry 3

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 246,538.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated August 15, 2025, entered into for personal tax and estate planning purposes.

F4 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $98.56 to to $99.22. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
November 18, 2025 Filed Nov 21, 2025 01:34 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 24,711 $98.21 $2,426,867.31
Disclosure

SEC source: 0001193125-25-290265 · ownership.xml · nonDerivative · entry 2

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 273,536.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated August 15, 2025, entered into for personal tax and estate planning purposes.

F3 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $97.57 to to $98.55. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
November 18, 2025 Filed Nov 21, 2025 01:34 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 8,291 $97.20 $805,885.20
Disclosure

SEC source: 0001193125-25-290265 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 298,247.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated August 15, 2025, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $96.56 to to $97.55. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
November 11, 2025 Filed Nov 13, 2025 00:28 UTC
Harris Timothy JSenior VP and CDIO
SaleCommon Stock, par value $0.10 per share 10,543 $97.69 $1,029,945.67
Disclosure

SEC source: 0001193125-25-278250 · ownership.xml · nonDerivative · entry 1

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 119,394

F1 · shares: Shares sold pursuant to a 10b5-1 Plan dated August 6, 2025.

Read SEC document
November 04, 2025 Filed Nov 5, 2025 19:19 UTC
Harris Timothy JSenior VP and CDIO
SaleCommon Stock, par value $0.10 per share 10,543 $96.07 $1,012,866.01
Disclosure

SEC source: 0001193125-25-266571 · ownership.xml · nonDerivative · entry 1

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 129,937

F1 · shares: Shares sold pursuant to a 10b5-1 Plan dated August 6, 2025.

Read SEC document
October 15, 2025 Filed Oct 16, 2025 21:36 UTC
Fields Kimberly ADirector · President, CEO and Director
SaleCommon Stock, par value $0.10 per share 21,153 $85.87 $1,816,408.11
Disclosure

SEC source: 0001193125-25-241608 · ownership.xml · nonDerivative · entry 1

Fields Kimberly A · CIK 0001773072 · Director · President, CEO and Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 202,668

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated June 11, 2025 entered into for personal tax and estate planning purposes.

Read SEC document
October 10, 2025 Filed Oct 14, 2025 09:15 UTC Tax withholdingCommon Stock, par value $0.10 per share 2,122 $81.21 $172,327.62
Disclosure

SEC source: 0001193125-25-238346 · ownership.xml · nonDerivative · entry 1

Busch Tina Killough · CIK 0001949998 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,872

F1 · shares: Shares withheld for payment of taxes on restricted stock units awarded on October 10, 2022. One-third of such restricted stock units vested by their terms on October 10, 2025.

Read SEC document
October 06, 2025 Filed Oct 8, 2025 11:00 UTC
Fields Kimberly ADirector · President, CEO and Director
SaleCommon Stock, par value $0.10 per share 21,154 $82.03 $1,735,262.62
Disclosure

SEC source: 0001193125-25-233981 · ownership.xml · nonDerivative · entry 1

Fields Kimberly A · CIK 0001773072 · Director · President, CEO and Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 223,821

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated June 11, 2025 entered into for personal tax and estate planning purposes.

Read SEC document
September 22, 2025 Filed Sep 23, 2025 20:54 UTC
Fields Kimberly ADirector · President, CEO and Director
SaleCommon Stock, par value $0.10 per share 20,312 $80.33 $1,631,662.96
Disclosure

SEC source: 0001193125-25-213533 · ownership.xml · nonDerivative · entry 1

Fields Kimberly A · CIK 0001773072 · Director · President, CEO and Director

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 244,975

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated June 11, 2025, entered into for personal tax and estate planning purposes.

Read SEC document
September 09, 2025 Filed Sep 11, 2025 00:15 UTC
Fields Kimberly APresident & CEO
SaleCommon Stock, par value $0.10 per share 15,941 $77.52 $1,235,746.32
Disclosure

SEC source: 0001773072-25-000004 · ownership.xml · nonDerivative · entry 1

Fields Kimberly A · CIK 0001773072 · President & CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 265,287

F1 · shares: Shares sold pursuant to a previously-disclosed 10b5-1 Trading Plan dated June 11, 2025, entered into for personal tax and estate planning purposes.

Read SEC document
August 05, 2025 Filed Aug 6, 2025 21:43 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 2,003 $76.10 $152,428.30
Disclosure

SEC source: 0000950170-25-104274 · ownership.xml · nonDerivative · entry 3

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,538.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F4 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $75.87 to to $76.33. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
August 05, 2025 Filed Aug 6, 2025 21:43 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 7,220 $75.30 $543,666.00
Disclosure

SEC source: 0000950170-25-104274 · ownership.xml · nonDerivative · entry 2

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 308,541.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F3 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $74.87 to to $75.86. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
August 05, 2025 Filed Aug 6, 2025 21:43 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 40,777 $74.48 $3,037,070.96
Disclosure

SEC source: 0000950170-25-104274 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 315,761.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $73.87 to to $74.86. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
August 04, 2025 Filed Aug 6, 2025 21:44 UTC SaleCommon Stock, par value $0.10 per share 200 $76.30 $15,260.00
Disclosure

SEC source: 0000950170-25-104276 · ownership.xml · nonDerivative · entry 2

Morehouse David J · CIK 0001635153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,777.4028

F2 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $776.29 to to $76.31. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
August 04, 2025 Filed Aug 6, 2025 21:44 UTC SaleCommon Stock, par value $0.10 per share 7,700 $75.80 $583,660.00
Disclosure

SEC source: 0000950170-25-104276 · ownership.xml · nonDerivative · entry 1

Morehouse David J · CIK 0001635153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,977.4028

F1 · price: The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $75.29 to to $76.27. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
June 12, 2025 Filed Jun 16, 2025 23:53 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 11,364 $84.30 $957,985.20
Disclosure

SEC source: 0000950170-25-086994 · ownership.xml · nonDerivative · entry 3

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 356,538.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2024, entered into for personal tax and estate planning purposes.

F4 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $84.16 to $84.50. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
June 12, 2025 Filed Jun 16, 2025 23:53 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 25,531 $84.30 $2,152,263.30
Disclosure

SEC source: 0000950170-25-086994 · ownership.xml · nonDerivative · entry 2

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 367,902.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2024, entered into for personal tax and estate planning purposes.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $83.15 to $84.15. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
June 12, 2025 Filed Jun 16, 2025 23:53 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 13,105 $82.89 $1,086,273.45
Disclosure

SEC source: 0000950170-25-086994 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 393,433.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2024, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $82.14 to $83.14. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U. S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
June 03, 2025 Filed Jun 5, 2025 23:12 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 50,000 $81.64 $4,082,000.00
Disclosure

SEC source: 0000950170-25-082605 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 406,538.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.10 to $82.04, The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U. S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:15 UTC
Sharma RubyDirector
GrantCommon Stock, par value $0.10 per share 1,655 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076341 · ownership.xml · nonDerivative · entry 1

Sharma Ruby · CIK 0001880428 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,380

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:12 UTC
Kah MarianneDirector
GrantCommon Stock, par value $0.10 per share 1,655 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076328 · ownership.xml · nonDerivative · entry 1

Kah Marianne · CIK 0001779021 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,170

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:14 UTC GrantCommon Stock, par value $0.10 per share 3,311 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076334 · ownership.xml · nonDerivative · entry 1

Morehouse David J · CIK 0001635153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,677

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:11 UTC
Hess David PDirector
GrantCommon Stock, par value $0.10 per share 3,509 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076324 · ownership.xml · nonDerivative · entry 1

Hess David P · CIK 0001304945 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,040

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:10 UTC GrantCommon Stock, par value $0.10 per share 4,039 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076322 · ownership.xml · nonDerivative · entry 1

HARVEY J BRETT · CIK 0001241243 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 98,865.815

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:09 UTC GrantCommon Stock, par value $0.10 per share 1,655 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076317 · ownership.xml · nonDerivative · entry 1

Corvi Carolyn · CIK 0001465541 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,240.6932

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:08 UTC GrantCommon Stock, par value $0.10 per share 1,655 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076313 · ownership.xml · nonDerivative · entry 1

Carlisle Herbert J · CIK 0001732898 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,651

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:06 UTC
BALL M LEROYDirector
GrantCommon Stock, par value $0.10 per share 1,655 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-076307 · ownership.xml · nonDerivative · entry 1

BALL M LEROY · CIK 0001229771 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,367

F1 · shares: Annual award of restricted stock granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program. The award vests on the first anniversary of the grant date.

F2 · price: Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.

Read SEC document
May 20, 2025 Filed May 22, 2025 20:05 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 45,359 $75.31 $3,415,986.29
Disclosure

SEC source: 0000950170-25-076302 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 461,179.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $74.86 to $75.86, The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U. S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
May 06, 2025 Filed May 8, 2025 22:27 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 26,416 $68.56 $1,811,080.96
Disclosure

SEC source: 0000950170-25-067293 · ownership.xml · nonDerivative · entry 2

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 506,538.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.13 to $68.56. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
May 06, 2025 Filed May 8, 2025 22:27 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 23,584 $67.76 $1,598,051.84
Disclosure

SEC source: 0000950170-25-067293 · ownership.xml · nonDerivative · entry 1

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 532,954.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F2 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.13 to $68.12, The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U. S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
May 06, 2025 Filed May 22, 2025 20:05 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
SaleCommon Stock, par value $0.10 per share 4,641 $76.01 $352,762.41
Disclosure

SEC source: 0000950170-25-076302 · ownership.xml · nonDerivative · entry 2

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 456,536.3409

F1 · shares: Shares sold pursuant to a 10b5-1 Trading Plan dated December 12, 2025, entered into for personal tax and estate planning purposes.

F3 · price: The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.88 to $76.14. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information regarding the number of shares sold at each specific price within the range reported.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 20:27 UTC SaleCommon Stock, par value $0.10 per share 17,000 $52.03 $884,510.00
Disclosure

SEC source: 0000950170-25-050444 · ownership.xml · nonDerivative · entry 1

Morehouse David J · CIK 0001635153 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 49,366

F1 · kind: On February 26, 2025, for personal tax and estate planning purposes, Mr. Morehouse made an irrevocable election to contribute shares of ATI common stock to an exchange fund in exchange for shares of the exchange fund, and the shares were transferred to an escrow account pending closing of the transaction, which occurred on April 1, 2025. The ATI common stock contributed to the fund was valued at $52.03 per share for purposes of determining the number of shares of the exchange fund issuable to Mr. Morehouse.

F1 · price: On February 26, 2025, for personal tax and estate planning purposes, Mr. Morehouse made an irrevocable election to contribute shares of ATI common stock to an exchange fund in exchange for shares of the exchange fund, and the shares were transferred to an escrow account pending closing of the transaction, which occurred on April 1, 2025. The ATI common stock contributed to the fund was valued at $52.03 per share for purposes of determining the number of shares of the exchange fund issuable to Mr. Morehouse.

Read SEC document
March 20, 2025 Filed Mar 21, 2025 21:20 UTC
Bhatia Vaishali S.SVP, General Counsel and CCO
Tax withholdingCommon Stock, par value $0.10 per share 3,509 $52.19 $183,134.71
Disclosure

SEC source: 0000950170-25-043352 · ownership.xml · nonDerivative · entry 1

Bhatia Vaishali S. · CIK 0001793501 · SVP, General Counsel and CCO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 60,721

F1 · shares: Shares withheld for payment of taxes on restricted stock units awarded on March 20, 2024. On third of such restricted stock units vested by their terms on March 20, 2025.

F2 · price: Represents the average of the high and low trading prices for on share of the Issuer's Common Stock on the New York Stock Exchange on March 20, 2025.

Read SEC document
March 03, 2025 Filed Mar 21, 2025 21:22 UTC
Miller Michael BenjaminVP Chief Accounting Officer
Tax withholdingCommon Stock, par value $0.10 per share 413 $59.09 $24,404.17
Disclosure

SEC source: 0000950170-25-043355 · ownership.xml · nonDerivative · entry 1

Miller Michael Benjamin · CIK 0001880164 · VP Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,572

F1 · shares: Shares withheld for the payment of taxes on restricted stock units awarded on March 1, 2024. One-third of such restricted stock units vested by their terms on March 1, 2025.

F2 · price: Represents the average of the high and low trading prices of one share of the Issuer's Common Stock on the New York Stock Exchange on March 3, 2025.

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February 06, 2025 Filed Feb 7, 2025 17:22 UTC SaleCommon Stock, par value $0.10 per share 9,900 $66.41 $657,459.00
Disclosure

SEC source: 0000950170-25-016453 · ownership.xml · nonDerivative · entry 1

Busch Tina Killough · CIK 0001949998 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,994

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January 06, 2025 Filed Jan 7, 2025 16:34 UTC Tax withholdingCommon Stock, par value $0.10 per share 8,406 $56.63 $476,031.78
Disclosure

SEC source: 0000950170-25-002880 · ownership.xml · nonDerivative · entry 5

Busch Tina Killough · CIK 0001949998 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,894

F8 · shares: Shares withheld for the payment of taxes in connection with the settlement of the 2022-2024 PSUs.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 16:34 UTC GrantCommon Stock, par value $0.10 per share 21,360 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-002880 · ownership.xml · nonDerivative · entry 4

Busch Tina Killough · CIK 0001949998 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,300

F7 · shares: Settlement of performance-vested restricted stock units that were granted in 2022, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2022 through December 31, 2024 (the "2022-2024 PSUs"). The shares underlying the 2022-2024 PSUs became payable as of January 6, 2025 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.

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January 06, 2025 Filed Jan 7, 2025 16:34 UTC Tax withholdingCommon Stock, par value $0.10 per share 1,246 $56.63 $70,560.98
Disclosure

SEC source: 0000950170-25-002880 · ownership.xml · nonDerivative · entry 3

Busch Tina Killough · CIK 0001949998 · SVP, CHRO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,940

F5 · shares: Shares withheld for the payment of taxes on restricted stock units awarded in 2022. On third of such award vested by its terms on January 6, 2025.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:43 UTC
NEWMAN DONALD PEVP and CFO
Tax withholdingCommon Stock, par value $0.10 per share 37,245 $56.63 $2,109,184.35
Disclosure

SEC source: 0000950170-25-002908 · ownership.xml · nonDerivative · entry 5

NEWMAN DONALD P · CIK 0001282236 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 249,111

F8 · shares: Shares withheld for the payment of taxes in connection with the settlement of the 2022-2024 PSUs.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:43 UTC
NEWMAN DONALD PEVP and CFO
GrantCommon Stock, par value $0.10 per share 94,650 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-002908 · ownership.xml · nonDerivative · entry 4

NEWMAN DONALD P · CIK 0001282236 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 286,356

F7 · shares: Settlement of performance-vested restricted stock units that were granted in 2022, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2022 through December 31, 2024 (the "2022-2024 PSUs"). The shares underlying the 2022-2024 PSUs became payable as of January 6, 2025 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.

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January 06, 2025 Filed Jan 7, 2025 21:43 UTC
NEWMAN DONALD PEVP and CFO
Tax withholdingCommon Stock, par value $0.10 per share 4,139 $56.63 $234,391.57
Disclosure

SEC source: 0000950170-25-002908 · ownership.xml · nonDerivative · entry 3

NEWMAN DONALD P · CIK 0001282236 · EVP and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 191,706

F5 · shares: Shares withheld for the payment of taxes on restricted stock units awarded in 2022. On third of such award vested by its terms on January 6, 2025.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:44 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
Tax withholdingCommon Stock, par value $0.10 per share 112,866 $56.63 $6,391,601.58
Disclosure

SEC source: 0000950170-25-002913 · ownership.xml · nonDerivative · entry 5

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 606,538.3409

F8 · shares: Shares withheld for the payment of taxes in connection with the settlement of the 2022-2024 PSUs.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:44 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
GrantCommon Stock, par value $0.10 per share 286,824 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-002913 · ownership.xml · nonDerivative · entry 4

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 719,404.3409

F7 · shares: Settlement of performance-vested restricted stock units that were granted in 2022, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2022 through December 31, 2024 (the "2022-2024 PSUs"). The shares underlying the 2022-2024 PSUs became payable as of January 6, 2025 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.

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January 06, 2025 Filed Jan 7, 2025 21:44 UTC
WETHERBEE ROBERT SDirector · Executive Chairman
Tax withholdingCommon Stock, par value $0.10 per share 12,541 $56.63 $710,196.83
Disclosure

SEC source: 0000950170-25-002913 · ownership.xml · nonDerivative · entry 3

WETHERBEE ROBERT S · CIK 0001572385 · Director · Executive Chairman

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 432,580.3409

F5 · shares: Shares withheld for the payment of taxes on restricted stock units awarded in 2022. On third of such award vested by its terms on January 6, 2025.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:40 UTC
Harris Timothy JSenior VP and CDIO
Tax withholdingCommon Stock, par value $0.10 per share 29,516 $56.63 $1,671,491.08
Disclosure

SEC source: 0000950170-25-002901 · ownership.xml · nonDerivative · entry 5

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,480

F8 · shares: Shares withheld for the payment of taxes in connection with the settlement of the 2022-2024 PSUs.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:40 UTC
Harris Timothy JSenior VP and CDIO
GrantCommon Stock, par value $0.10 per share 67,402 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-002901 · ownership.xml · nonDerivative · entry 4

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 169,996

F7 · shares: Settlement of performance-vested restricted stock units that were granted in 2022, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2022 through December 31, 2024 (the "2022-2024 PSUs"). The shares underlying the 2022-2024 PSUs became payable as of January 6, 2025 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.

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January 06, 2025 Filed Jan 7, 2025 21:40 UTC
Harris Timothy JSenior VP and CDIO
Tax withholdingCommon Stock, par value $0.10 per share 3,280 $56.63 $185,746.40
Disclosure

SEC source: 0000950170-25-002901 · ownership.xml · nonDerivative · entry 3

Harris Timothy J · CIK 0001776844 · Senior VP and CDIO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,594

F5 · shares: Shares withheld for the payment of taxes on restricted stock units awarded in 2022. On third of such award vested by its terms on January 6, 2025.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:39 UTC
Fields Kimberly APresident & CEO
Tax withholdingCommon Stock, par value $0.10 per share 46,557 $56.63 $2,636,522.91
Disclosure

SEC source: 0000950170-25-002899 · ownership.xml · nonDerivative · entry 5

Fields Kimberly A · CIK 0001773072 · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 281,228

F8 · shares: Shares withheld for the payment of taxes in connection with the settlement of the 2022-2024 PSUs.

F6 · price: Represents the average of the high and low trading prices for one share of the Issuer's stock on the NYSE on January 6, 2025.

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January 06, 2025 Filed Jan 7, 2025 21:39 UTC
Fields Kimberly APresident & CEO
GrantCommon Stock, par value $0.10 per share 118,314 $0.00 $0.00
Disclosure

SEC source: 0000950170-25-002899 · ownership.xml · nonDerivative · entry 4

Fields Kimberly A · CIK 0001773072 · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 327,785

F7 · shares: Settlement of performance-vested restricted stock units that were granted in 2022, the vesting of which was contingent upon the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2022 through December 31, 2024 (the "2022-2024 PSUs"). The shares underlying the 2022-2024 PSUs became payable as of January 6, 2025 following certification of the Issuer's achievement of the relevant performance criteria by the Compensation and Leadership Development Committee of the Issuer's Board of Directors.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.