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The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":62832.9498,"source":{"system":"sec-edgar","filing":"0001209191-22-049819","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122049819/doc4.xml","form_type":"4"}},{"id":2185954,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-08-15T22:11:55.000Z","date":"2022-08-11","kind":"sale","acquired":false,"shares":1000,"price":31.22,"value":31220.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.8958 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":63832.9498,"source":{"system":"sec-edgar","filing":"0001209191-22-045845","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122045845/doc4.xml","form_type":"4"}},{"id":2199373,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-08-01T21:37:32.000Z","date":"2022-07-28","kind":"sale","acquired":false,"shares":2000,"price":25,"value":50000.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.8958 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":64832.9498,"source":{"system":"sec-edgar","filing":"0001209191-22-043714","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122043714/doc4.xml","form_type":"4"}},{"id":2266490,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-05-18T20:09:38.000Z","date":"2022-05-09","kind":"sale","acquired":false,"shares":1000,"price":25.96,"value":25960.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.8958 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":66832.9498,"source":{"system":"sec-edgar","filing":"0001209191-22-030017","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122030017/doc4.xml","form_type":"4"}},{"id":2362267,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-03-02T18:59:05.000Z","date":"2022-02-28","kind":"tax_withholding","acquired":false,"shares":336,"price":25.7,"value":8635.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded in 2019. One-third of such restricted stock units vested by their terms on February 28, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 28, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,176.5067 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,190.5135 units, which represent interests in the Company's stock fund."}],"balance_after":67832.5607,"source":{"system":"sec-edgar","filing":"0001209191-22-014565","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122014565/doc4.xml","form_type":"4"}},{"id":2369898,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-02-28T22:07:25.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":1017,"price":23.54,"value":23940.18,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 24, 2020. One-third of such restricted stock units vested by their terms on February 24, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 February 24, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.5067 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,190.5135 units, which represent interests in the Company's stock fund."}],"balance_after":68168.5607,"source":{"system":"sec-edgar","filing":"0001209191-22-013666","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122013666/doc4.xml","form_type":"4"}},{"id":2369897,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-02-28T22:07:25.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":585,"price":23.54,"value":13770.9,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld for payment of taxes in connection with the February 24, 2022 settlement of the 2019-2021 PSUs."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 February 24, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.5067 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,190.5135 units, which represent interests in the Company's stock fund."}],"balance_after":69185.5607,"source":{"system":"sec-edgar","filing":"0001209191-22-013666","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122013666/doc4.xml","form_type":"4"}},{"id":2369896,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-02-28T22:07:25.000Z","date":"2022-02-24","kind":"grant","acquired":true,"shares":1281,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Settlement of performance-vested restricted stock units that were granted in 2019, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period form January 1, 2019 through December 31, 2021 (the \"2019-2021 PSUs\"). The shares underlying the 2019-2021 PSUs became payable as of February 24, 2022 following certification of the Issuer's achievement of such performance criteria by the Personnel and Compensation Committee of the Issuer's Board of Directors."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,176.5067 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,190.5135 units, which represent interests in the Company's stock fund."}],"balance_after":69770.5607,"source":{"system":"sec-edgar","filing":"0001209191-22-013666","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122013666/doc4.xml","form_type":"4"}},{"id":2442014,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Performance Stock Unit","published_at":"2022-01-06T21:57:53.000Z","date":"2022-01-04","kind":"grant","acquired":true,"shares":5128,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F6","text":"Each Performance Stock Unit (\"PSU\") represents a contingent right to receive one share of the Issuer's Common Stock if the Issuer's Common Stock achieves a specified target market price (based on a 20-trading day average) on the NYSE for at least 20 consecutive trading days (\"20-Day Average Market Price\") prior to December 31, 2025. Each PSU may result in the right to receive additional shares of the Issuer's Common Stock, up to a maximum of three shares per PSU, to the extent that the Issuer's Common Stock achieves 20-Day Average Market Prices at specified levels in excess of the target market price prior to December 31, 2025. Vested shares, if any, generally are payable in two equal installments in early 2026 and early 2027."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Awarded under ATI's 2020 Incentive Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"Each Performance Stock Unit (\"PSU\") represents a contingent right to receive one share of the Issuer's Common Stock if the Issuer's Common Stock achieves a specified target market price (based on a 20-trading day average) on the NYSE for at least 20 consecutive trading days (\"20-Day Average Market Price\") prior to December 31, 2025. Each PSU may result in the right to receive additional shares of the Issuer's Common Stock, up to a maximum of three shares per PSU, to the extent that the Issuer's Common Stock achieves 20-Day Average Market Prices at specified levels in excess of the target market price prior to December 31, 2025. Vested shares, if any, generally are payable in two equal installments in early 2026 and early 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"Each Performance Stock Unit (\"PSU\") represents a contingent right to receive one share of the Issuer's Common Stock if the Issuer's Common Stock achieves a specified target market price (based on a 20-trading day average) on the NYSE for at least 20 consecutive trading days (\"20-Day Average Market Price\") prior to December 31, 2025. Each PSU may result in the right to receive additional shares of the Issuer's Common Stock, up to a maximum of three shares per PSU, to the extent that the Issuer's Common Stock achieves 20-Day Average Market Prices at specified levels in excess of the target market price prior to December 31, 2025. Vested shares, if any, generally are payable in two equal installments in early 2026 and early 2027."}],"balance_after":5128,"derivative":{"exercise_date":"2025-12-31","expiration_date":"2025-12-31","underlying":"Common Stock","underlying_shares":5128},"source":{"system":"sec-edgar","filing":"0001209191-22-002209","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122002209/doc4.xml","form_type":"4"}},{"id":2442013,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-01-06T21:57:53.000Z","date":"2022-01-04","kind":"grant","acquired":true,"shares":8583,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"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."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Awarded under ATI's 2020 Incentive Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,195.9567 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":68509.0107,"source":{"system":"sec-edgar","filing":"0001209191-22-002209","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122002209/doc4.xml","form_type":"4"}},{"id":2442012,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2022-01-06T21:57:53.000Z","date":"2022-01-04","kind":"tax_withholding","acquired":false,"shares":2346,"price":16.74,"value":39272.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on January 4, 2021. One-third of such restricted stock units vested by their terms on January 4, 2022."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 (\"NYSE\") on January 4, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,195.9567 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":59926.0107,"source":{"system":"sec-edgar","filing":"0001209191-22-002209","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919122002209/doc4.xml","form_type":"4"}},{"id":2815840,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-03-04T00:55:56.000Z","date":"2021-03-01","kind":"tax_withholding","acquired":false,"shares":335,"price":20.69,"value":6931.15,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 27, 2019. One-third of such restricted stock units vested by their terms on March 1, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 March 1, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,184.724781 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":62260.9743,"source":{"system":"sec-edgar","filing":"0001209191-21-017434","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121017434/doc4.xml","form_type":"4"}},{"id":2830536,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-02-26T21:17:30.000Z","date":"2021-02-25","kind":"tax_withholding","acquired":false,"shares":1745,"price":21.26,"value":37098.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Shares withheld for payment of taxes in connection with the February 25, 2021 settlement of the 2018-2020 PSUs."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 February 25, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,184.9203 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,190 units, which represent interests in the Company's stock fund."}],"balance_after":62595.9743,"source":{"system":"sec-edgar","filing":"0001209191-21-014732","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121014732/doc4.xml","form_type":"4"}},{"id":2830535,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-02-26T21:17:30.000Z","date":"2021-02-25","kind":"grant","acquired":true,"shares":3914,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Settlement of performance-vested restricted stock units that were granted in 2018, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period form January 1, 2018 through December 31, 2020 (the \"2018-2020 PSUs\"). The shares underlying the 2018-2020 PSUs became payable as of February 25, 2021 following certification of the Issuer's achievement of such performance criteria by the Personnel and Compensation Committee of the Issuer's Board of Directors."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,184.9203 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,190 units, which represent interests in the Company's stock fund."}],"balance_after":64340.9743,"source":{"system":"sec-edgar","filing":"0001209191-21-014732","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121014732/doc4.xml","form_type":"4"}},{"id":2830534,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-02-26T21:17:30.000Z","date":"2021-02-24","kind":"tax_withholding","acquired":false,"shares":1140,"price":21.28,"value":24259.2,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 24, 2020. One-third of such restricted stock units vested by their terms on February 24, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 24, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,184.9203 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,190 units, which represent interests in the Company's stock fund."}],"balance_after":60426.9743,"source":{"system":"sec-edgar","filing":"0001209191-21-014732","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121014732/doc4.xml","form_type":"4"}},{"id":2836774,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-02-25T01:15:33.000Z","date":"2021-02-22","kind":"tax_withholding","acquired":false,"shares":396,"price":19.89,"value":7876.44,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 20, 2018. One-third of such restricted stock units vested by their terms on February 22, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 22, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,184.9203 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":61566.9743,"source":{"system":"sec-edgar","filing":"0001209191-21-014038","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121014038/doc4.xml","form_type":"4"}},{"id":2916797,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2021-01-06T21:28:34.000Z","date":"2021-01-04","kind":"grant","acquired":true,"shares":14420,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,197.556351 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":61975.6104,"source":{"system":"sec-edgar","filing":"0001209191-21-002084","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919121002084/doc4.xml","form_type":"4"}},{"id":3241997,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2020-02-28T21:28:38.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":336,"price":18.12,"value":6088.32,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units that vested on February 27, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 27, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,190.3743 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":47548.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-013858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120013858/doc4.xml","form_type":"4"}},{"id":3247004,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2020-02-26T21:11:55.000Z","date":"2020-02-24","kind":"grant","acquired":true,"shares":7003,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F6","text":"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."}],"balance_after":47884.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-012972","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120012972/doc4.xml","form_type":"4"}},{"id":3247003,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2020-02-26T21:11:55.000Z","date":"2020-02-24","kind":"tax_withholding","acquired":false,"shares":452,"price":19.44,"value":8786.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 23, 2017. One-third of such restricted stock units vested by their terms on February 24, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 February 24, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,190.3743 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":40881.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-012972","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120012972/doc4.xml","form_type":"4"}},{"id":3247002,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2020-02-26T21:11:55.000Z","date":"2020-02-24","kind":"tax_withholding","acquired":false,"shares":4364,"price":19.44,"value":84836.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld for payment of taxes in connection with the February 24, 2020 settlement of the 2017-2019 PSUs."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 February 24, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,190.3743 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":41333.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-012972","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120012972/doc4.xml","form_type":"4"}},{"id":3247001,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2020-02-26T21:11:55.000Z","date":"2020-02-24","kind":"grant","acquired":true,"shares":9657,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Settlement of performance-vested restricted stock units that were granted in 2017, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period form January 1, 2017 through December 31, 2019 (the \"2017-2019 PSUs\"). The shares underlying the 2017-2019 PSUs became payable as of February 24, 2020 following certification of the Issuer's achievement of such performance criteria by the Personnel and Compensation Committee of the Issuer's Board of Directors."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,190.3743 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":45697.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-012972","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120012972/doc4.xml","form_type":"4"}},{"id":3254102,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2020-02-25T00:19:05.000Z","date":"2019-02-20","kind":"tax_withholding","acquired":false,"shares":397,"price":20.4,"value":8098.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 20, 2018. One-third of such restricted stock units vested by their terms on February 20, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 20, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6190.3743 shares of common stock that Mr. Schwartz owns in the Company's 401(k) Plan.  Fluctuations in 401(k) share amounts reflect the Plan's unit reporting method.  Mr. Schwartz holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":36040.4283,"source":{"system":"sec-edgar","filing":"0001209191-20-012232","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919120012232/doc4.xml","form_type":"4"}},{"id":3624277,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-03-02T00:56:32.000Z","date":"2019-02-28","kind":"tax_withholding","acquired":false,"shares":1215,"price":28.92,"value":35137.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F7","text":"Shares withheld for payment of taxes in connection with the February 28, 2019 settlement of the 2016-2018 PSUs."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 February 28, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":37422.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-015251","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119015251/doc4.xml","form_type":"4"}},{"id":3624276,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-03-02T00:56:32.000Z","date":"2019-02-28","kind":"exercise","acquired":true,"shares":4265,"price":28.92,"value":123343.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Settlement of performance-vested restricted stock units that were granted in 2016, the vesting of which was contingent upon the Issuer's achievement of specified performance criteria during the period from January 1, 2016 through December 31, 2018 (the \"2016-2018 PSUs\").  The Issuer's partial achievement of such performance criteria was certified, and a corresponding portion of the shares underlying the 2016-2018 PSUs became payable, as of February 28, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 February 28, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":38637.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-015251","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119015251/doc4.xml","form_type":"4"}},{"id":3624275,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-03-02T00:56:32.000Z","date":"2019-02-27","kind":"tax_withholding","acquired":false,"shares":743,"price":29.255,"value":21736.465,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Shares withheld for payment of taxes on performance/restricted stock granted in 2014 that vested on February 27, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 27, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":34372.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-015251","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119015251/doc4.xml","form_type":"4"}},{"id":3624274,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-03-02T00:56:32.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":2314,"price":29.255,"value":67696.07,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Award of restricted stock units granted on February 27, 2019, 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."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 27, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":35115.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-015251","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119015251/doc4.xml","form_type":"4"}},{"id":3629786,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-02-28T01:43:52.000Z","date":"2019-02-25","kind":"tax_withholding","acquired":false,"shares":320,"price":29.13,"value":9321.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 23, 2017. One-third of such restricted stock units vested by their terms on February 25, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 25, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":32801.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-014330","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119014330/doc4.xml","form_type":"4"}},{"id":3629785,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-02-28T01:43:52.000Z","date":"2019-02-25","kind":"tax_withholding","acquired":false,"shares":528,"price":29.13,"value":15380.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 25, 2016. One-third of such restricted stock units vested by their terms on February 25, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 25, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":33121.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-014330","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119014330/doc4.xml","form_type":"4"}},{"id":3639578,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2019-02-22T23:40:32.000Z","date":"2019-02-20","kind":"tax_withholding","acquired":false,"shares":275,"price":28.8,"value":7920.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 20, 2018. One-third of such restricted stock units vested by their terms on February 20, 2019."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 20, 2019."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,175.963992 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":33649.7932,"source":{"system":"sec-edgar","filing":"0001209191-19-012767","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919119012767/doc4.xml","form_type":"4"}},{"id":3789199,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2018-10-17T20:29:33.000Z","date":"2018-10-15","kind":"sale","acquired":false,"shares":1000,"price":27.1,"value":27100.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,183.766704 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":32982.5959,"source":{"system":"sec-edgar","filing":"0001209191-18-055310","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118055310/doc4.xml","form_type":"4"}},{"id":3811992,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2018-09-19T23:11:49.000Z","date":"2018-09-17","kind":"sale","acquired":false,"shares":1000,"price":26.79,"value":26790.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,183.541885 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":33982.3711,"source":{"system":"sec-edgar","filing":"0001209191-18-051698","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118051698/doc4.xml","form_type":"4"}},{"id":3840602,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2018-08-17T15:34:34.000Z","date":"2018-08-15","kind":"sale","acquired":false,"shares":1000,"price":25.9,"value":25900.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,188.667212 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":34987.4964,"source":{"system":"sec-edgar","filing":"0001209191-18-047265","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118047265/doc4.xml","form_type":"4"}},{"id":3865632,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 per share","published_at":"2018-07-18T16:44:30.000Z","date":"2018-07-16","kind":"sale","acquired":false,"shares":1000,"price":26.65,"value":26650.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,184.724781 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":35983.554,"source":{"system":"sec-edgar","filing":"0001209191-18-042985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118042985/doc4.xml","form_type":"4"}},{"id":3889497,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, par value $0.10 par value per share","published_at":"2018-06-19T20:54:05.000Z","date":"2018-06-15","kind":"sale","acquired":false,"shares":1000,"price":27.34,"value":27340.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares sold pursuant to a 10b5-1 Trading Plan."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,180.87833 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":36979.7075,"source":{"system":"sec-edgar","filing":"0001209191-18-038606","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118038606/doc4.xml","form_type":"4"}},{"id":3954000,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-04-30T20:34:55.000Z","date":"2018-04-26","kind":"sale","acquired":false,"shares":1000,"price":27.12,"value":27120.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amount includes 6,181.756206 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":37980.5854,"source":{"system":"sec-edgar","filing":"0001209191-18-026859","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118026859/doc4.xml","form_type":"4"}},{"id":4016894,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-03-05T22:52:28.000Z","date":"2018-03-01","kind":"tax_withholding","acquired":false,"shares":708,"price":26.1,"value":18478.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on shares of previously-restricted stock, the restrictions on which lapsed by their terms on March 1, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 March 1, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,180.261753 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191 units, which represent interests in the Company's stock fund."}],"balance_after":38979.091,"source":{"system":"sec-edgar","filing":"0001209191-18-016758","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118016758/doc4.xml","form_type":"4"}},{"id":4031369,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-02-28T00:40:08.000Z","date":"2018-02-26","kind":"tax_withholding","acquired":false,"shares":432,"price":27.12,"value":11715.84,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 25, 2016.  One-third of such restricted stock units vested by their terms on February 26, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"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 February 26, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,179.274546 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":39686.1037,"source":{"system":"sec-edgar","filing":"0001209191-18-014260","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118014260/doc4.xml","form_type":"4"}},{"id":4031368,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-02-28T00:40:08.000Z","date":"2018-02-23","kind":"tax_withholding","acquired":false,"shares":310,"price":27,"value":8370.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 23, 2017. One-third of such restricted stock units vested by their terms on February 23, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"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 February 23, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This amount includes 6,179.274546 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":40118.1037,"source":{"system":"sec-edgar","filing":"0001209191-18-014260","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118014260/doc4.xml","form_type":"4"}},{"id":4041448,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-02-22T23:52:17.000Z","date":"2018-02-20","kind":"grant","acquired":true,"shares":2435,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,662.195037 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":40911.0243,"source":{"system":"sec-edgar","filing":"0001209191-18-012707","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118012707/doc4.xml","form_type":"4"}},{"id":4091322,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-01-24T21:35:05.000Z","date":"2018-01-22","kind":"tax_withholding","acquired":false,"shares":856,"price":28.25,"value":24182.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld for payment of taxes on shares of previously-restricted stock, the restrictions on which lapsed by their terms on January 22, 2018."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 January 22, 2018."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,175.37708 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":37989.2063,"source":{"system":"sec-edgar","filing":"0001209191-18-005132","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118005132/doc4.xml","form_type":"4"}},{"id":4091321,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value per share","published_at":"2018-01-24T21:35:05.000Z","date":"2018-01-22","kind":"disposition_to_issuer","acquired":false,"shares":2530.179,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Forfeiture of restricted shares, including accumulated dividends, granted under the 2015 Performance/Restricted Stock Program."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,175.37708 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":38845.2063,"source":{"system":"sec-edgar","filing":"0001209191-18-005132","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919118005132/doc4.xml","form_type":"4"}},{"id":4422487,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-02-28T00:18:08.000Z","date":"2017-02-27","kind":"tax_withholding","acquired":false,"shares":479,"price":19.65,"value":9412.35,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F5","text":"Shares withheld for payment of taxes on restricted stock units awarded on February 27, 2016.  One-third of such restricted stock units vested by their terms on February 27, 2017."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"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 February 27, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,197.8800 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. Mr. Schwartz holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":41397.8882,"source":{"system":"sec-edgar","filing":"0001209191-17-014996","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117014996/doc4.xml","form_type":"4"}},{"id":4422486,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-02-28T00:18:08.000Z","date":"2017-02-23","kind":"tax_withholding","acquired":false,"shares":581.8611,"price":19.44,"value":11311.379784,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld for payment of taxes on shares of previously-restricted stock awarded on February 23, 2012, the restrictions on which lapsed by their terms on the fifth anniversary of the grant date."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"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 February 23, 2017."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,197.8800 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. Mr. Schwartz holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":41876.8882,"source":{"system":"sec-edgar","filing":"0001209191-17-014996","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117014996/doc4.xml","form_type":"4"}},{"id":4422485,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-02-28T00:18:08.000Z","date":"2017-02-23","kind":"grant","acquired":true,"shares":3119,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,197.8800 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. Mr. Schwartz holds approximately 5,192 units, which represent interests in the Company's stock fund."}],"balance_after":42458.7493,"source":{"system":"sec-edgar","filing":"0001209191-17-014996","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117014996/doc4.xml","form_type":"4"}},{"id":4475816,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-01-31T21:33:09.000Z","date":"2017-01-27","kind":"disposition_to_issuer","acquired":false,"shares":2663.2998,"price":21.75,"value":57926.77065,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F4","text":"Forfeiture of restricted shares, including accumulated dividends, granted under the 2014 Performance/Restricted Stock Program."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,194.0360 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191.6820 units, which represent interests in the Company's stock fund."}],"balance_after":39286.3583,"source":{"system":"sec-edgar","filing":"0001209191-17-006394","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117006394/doc4.xml","form_type":"4"}},{"id":4475815,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-01-31T21:33:09.000Z","date":"2017-01-27","kind":"tax_withholding","acquired":false,"shares":1081,"price":21.75,"value":23511.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld for payment of taxes on the 2014-2016 TSR award paid on January 27, 2017 as described in footnote 1 above."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,194.0360 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191.6820 units, which represent interests in the Company's stock fund."}],"balance_after":41949.6581,"source":{"system":"sec-edgar","filing":"0001209191-17-006394","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117006394/doc4.xml","form_type":"4"}},{"id":4475814,"issuer":{"id":944,"kind":"organization","name":"ATI INC","symbol":"ATI"},"owners":[{"id":123809,"kind":"person","name":"Schwartz Karl D","position":1,"cik":"0001498160","reported_name":"Schwartz Karl D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Controller & CAO"}}],"security":"Common Stock, $0.10 par value","published_at":"2017-01-31T21:33:09.000Z","date":"2017-01-27","kind":"grant","acquired":true,"shares":2936,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares awarded under the Company's 2014-2016 Total Shareholder Return Program (\"TSR\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"This amount includes 6,194.0360 shares of common stock Mr. Schwartz owns in the Company's 401(k) plan. Fluctuations in 401(k) share amounts reflect the plan's unit reporting method. The reporting person holds approximately 5,191.6820 units, which represent interests in the Company's stock fund."}],"balance_after":43030.6581,"source":{"system":"sec-edgar","filing":"0001209191-17-006394","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1018963/000120919117006394/doc4.xml","form_type":"4"}}]}