ATI Inc supplies specialty metals to various end markets, including aerospace and defense, oil and gas, automotive, and electrical energy, among many others. The company's operating segment includes High-Performance Materials and Components and Advanced Alloys and Solutions. The majority of revenue is from the High-Performance Materials segment. The High-Performance Materials segment is focused on a wide range of high-performance specialty materials, parts, and components for several the majority of end markets, including the aerospace & defense, medical, and energy markets. Geographically, it operates in the United States, China, the United Kingdom, Germany, France, Canada, and Others, the majority is from the United States.
Footnote F1 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $201.56 to to $201.82. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $228.02 to $228.73. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $229.14 to $230.07. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $230.17 to $231.16. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $231.20 to $232.18. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F6 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $232.19 to $232.74. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.71 to $179.70. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $179.77 to $180.39. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $180.83 to $181.87. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.01 to $181.95. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F6 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.06 to $183.01. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F7 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $183.07 to 184.06. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F8 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $184.07 to 185.02. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F1 (shares): Shares withheld for payment of taxes on restricted stock units that vested by their terms on July 1, 2026.
Footnote F2 (price): Represents the average of the high and low trading prices for one share of the Issuer's Common Stock on the New York Stock Exchange on July 1, 2026.
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $177.42 to $178.35. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $178.42 to $179.40. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $179.41 to $180.27. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $180.45 to $181.26. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F6 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $181.47 to $182.45. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F7 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $182.49 to 183.18. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote 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.
Footnote F2 (price): Annual award granted under the Issuer's 2022 Incentive Plan as part of the Issuer's Director compensation program.
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated February 5, 2026, entered into for personal tax and estate planning purposes.
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $153.82 to $154.65. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $155.78 to $156.76. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $156.91 to $157.90. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $157.91 to $158.88. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F6 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $158.94 to $159.84. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F7 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $159.99 to 160.98. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F8 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $160.99 to 161.38. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote 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, 2026.
Footnote 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, 2026.
Footnote F1 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $152.77 to to $153.53. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $154.31 to to $154.81. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote 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, 2026.
Footnote 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 2, 2026.
Footnote F1 (shares): Shares sold pursuant to a 10b5-1 Trading Plan dated August 15, 2025, entered into for personal tax and estate planning purposes.
Footnote F2 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $143.45 to $144.45. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U.S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F3 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $144.48 to $145.47. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F4 (price): The price reported is a weighted average price. The shares were sold in multiple transactions at prices ranging from $145.51 to $146.51. The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the SEC, upon request, full information… Full note on SEC EDGAR
Footnote F5 (price): The price reported is a weighted average price. These shares were sold in multiple transactions at prices ranging from $146.52 to $146.88, The reporting person undertakes to provide to the Issuer, its security holders and the Staff of the U. S. Securities and Exchange Commission… Full note on SEC EDGAR
Footnote F1 (shares): Award of restricted stock units, which are settled in shares of stock upon vesting. The award vests in three equal annual installments on each of the first three anniversaries of the grant date.
Footnote F2 (price): Awarded under the Issuer's 2022 Incentive Plan.
Footnote F3 (price): Settlement of one-half of certain Performance Stock Units awarded in 2022 ("2022 Breakout Performance Units"), each of which represented a contingent right to receive shares of the Issuer's Common Stock if the Issuer's Common Stock achieved specified target market prices (based… Full note on SEC EDGAR
Footnote F4 (shares): Shares withheld for the payment of taxes in connection with the settlement of 2022 Breakout Performance Units.
Footnote F5 (price): Represents the average of the high and low trading prices for one share of the Issuer's Common Stock on the NYSE on January 5, 2026.
Footnote F6 (shares): Settlement of performance-vested restricted stock units that were granted in 2023, the vesting of which was contingent on the Issuer's total shareholder return relative to a specified peer group during the period from January 1, 2023 through December 31, 2025 (the "2023-2025… Full note on SEC EDGAR
Footnote F7 (shares): Shares withheld for the payment of taxes in connection with the settlement of the 2023-2025 PSUs.
Footnote F8 (shares): Shares withheld for payment of taxes on restricted stock units awarded in 2023, 2024 and 2025. One third of each such award vested by the terms thereof on January 5, 2026.
An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.
ATI INC (ATI) had 8 insider filings in the last 90 days, with the most recent on 23 September 2026. The full record for ATI runs to 72 Form 4 filings, the earliest from 16 October 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.
How many insiders are buying ATI stock?
No insider purchases of ATI were filed in the last 90 days.
How many insiders are selling ATI stock?
12 insider sales of ATI were filed in the last 90 days, totaling $27.53M.
Where can I see ATI SEC filings (Form 4, 10-K, 10-Q, 8-K)?
This page collects ATI Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.
Timothy J. Harris - OfficerOpen-market sale$1.73M
David J. Morehouse - Director
Kimberly A. Fields - Officer
David P. Hess
Carolyn Corvi
M. Leroy Ball
Robert S. Wetherbee - Officer
