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Each performance-based restricted stock unit became vested on August 17, 2018, which was the later of (i) the third anniversary of the grant date, and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement.  The compensation committee certified the achievement of the applicable performance objectives on August 16, 2018.  Vested shares will be delivered to the reporting person not later than 60 days following the vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"Represents shares received or that will be received in respect of performance-based restricted stock units granted on August 17, 2015.  Each performance-based restricted stock unit became vested on August 17, 2018, which was the later of (i) the third anniversary of the grant date, and (ii) the date the compensation committee certified the achievement of the applicable performance objectives in accordance with the underlying award agreement.  The compensation committee certified the achievement of the applicable performance objectives on August 16, 2018.  Vested shares will be delivered to the reporting person not later than 60 days following the vesting date."}],"balance_after":11390,"derivative":{"underlying":"Common Stock","underlying_shares":11390},"source":{"system":"sec-edgar","filing":"0001567619-18-001499","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000156761918001499/doc1.xml","form_type":"4"}},{"id":3838275,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2018-08-20T19:58:23.000Z","date":"2018-08-17","kind":"grant","acquired":true,"shares":11390,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":94040,"source":{"system":"sec-edgar","filing":"0001567619-18-001499","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000156761918001499/doc1.xml","form_type":"4"}},{"id":3838274,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2018-08-20T19:58:23.000Z","date":"2018-08-17","kind":"exercise","acquired":true,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":82650,"source":{"system":"sec-edgar","filing":"0001567619-18-001499","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000156761918001499/doc1.xml","form_type":"4"}},{"id":3841744,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2018-08-16T18:04:01.000Z","date":"2018-08-14","kind":"purchase","acquired":true,"shares":2000,"price":10.55,"value":21100.0,"ownership":{"direct":true},"balance_after":80450,"source":{"system":"sec-edgar","filing":"0001491160-18-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116018000001/primary_doc.xml","form_type":"4"}},{"id":3973070,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Restricted Stock Units","published_at":"2018-04-03T21:19:50.000Z","date":"2017-03-31","kind":"grant","acquired":true,"shares":8250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"shares","element":"transactionShares","label":"F2","text":"The purpose of this amendment is to correct the number of shares reported under Columns 4, 7 and 9 of Table II. The original Form 4, filed April 4, 2017, erroneously reported 25,000 shares under Columns 4, 7 and 9 of Table II."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2017, the reporting person was granted 8,250 restricted stock units, of which 2,750 vest on March 31, 2018, 2,750 vest on March 31, 2019 and 2,750 vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2017, the reporting person was granted 8,250 restricted stock units, of which 2,750 vest on March 31, 2018, 2,750 vest on March 31, 2019 and 2,750 vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F2","text":"The purpose of this amendment is to correct the number of shares reported under Columns 4, 7 and 9 of Table II. The original Form 4, filed April 4, 2017, erroneously reported 25,000 shares under Columns 4, 7 and 9 of Table II."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The purpose of this amendment is to correct the number of shares reported under Columns 4, 7 and 9 of Table II. The original Form 4, filed April 4, 2017, erroneously reported 25,000 shares under Columns 4, 7 and 9 of Table II."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"On March 31, 2017, the reporting person was granted 8,250 restricted stock units, of which 2,750 vest on March 31, 2018, 2,750 vest on March 31, 2019 and 2,750 vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":8250,"derivative":{"underlying":"Common Stock","underlying_shares":8250},"source":{"system":"sec-edgar","filing":"0001140361-18-016914","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016914/doc1.xml","form_type":"4/A","original_submission_date":"2017-04-04"}},{"id":3973069,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Restricted Stock Units","published_at":"2018-04-03T21:18:01.000Z","date":"2018-03-31","kind":"grant","acquired":true,"shares":8250,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"On March 31, 2018, the reporting person was granted 8,250 restricted stock units, of which 2,750 will vest on March 31, 2019, 2,750 will vest on March 31, 2020 and 2,750 will vest on March 31, 2021.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"On March 31, 2018, the reporting person was granted 8,250 restricted stock units, of which 2,750 will vest on March 31, 2019, 2,750 will vest on March 31, 2020 and 2,750 will vest on March 31, 2021.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":8250,"derivative":{"underlying":"Common Stock","underlying_shares":8250},"source":{"system":"sec-edgar","filing":"0001140361-18-016913","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016913/doc1.xml","form_type":"4"}},{"id":3973068,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Restricted Stock Units","published_at":"2018-04-03T21:18:01.000Z","date":"2018-03-31","kind":"exercise","acquired":false,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The restricted stock units reported as disposed herein were settled for shares of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2017, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on March 31, 2018.  Of the remaining unvested restricted stock units, 2,750 will vest on March 31, 2019 and 2,750 will vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2017, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on March 31, 2018.  Of the remaining unvested restricted stock units, 2,750 will vest on March 31, 2019 and 2,750 will vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":5500,"derivative":{"underlying":"Common Stock","underlying_shares":2750},"source":{"system":"sec-edgar","filing":"0001140361-18-016913","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016913/doc1.xml","form_type":"4"}},{"id":3973067,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Restricted Stock Units","published_at":"2018-04-03T21:18:01.000Z","date":"2018-03-31","kind":"exercise","acquired":false,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The restricted stock units reported as disposed herein were settled for shares of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2016, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on March 31, 2017 and 2,750 vested on March 31, 2018.  The remaining 2,750 unvested restricted stock units will vest on March 31, 2019.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2016, the reporting person was granted 8,250 restricted stock units, of which 2,750 vested on March 31, 2017 and 2,750 vested on March 31, 2018.  The remaining 2,750 unvested restricted stock units will vest on March 31, 2019.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":2750,"derivative":{"underlying":"Common Stock","underlying_shares":2750},"source":{"system":"sec-edgar","filing":"0001140361-18-016913","document":"doc1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016913/doc1.xml","form_type":"4"}},{"id":3973066,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2018-04-03T21:18:01.000Z","date":"2018-03-31","kind":"exercise","acquired":true,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":78450,"source":{"system":"sec-edgar","filing":"0001140361-18-016913","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016913/doc1.xml","form_type":"4"}},{"id":3973065,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2018-04-03T21:18:01.000Z","date":"2018-03-31","kind":"exercise","acquired":true,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":75700,"source":{"system":"sec-edgar","filing":"0001140361-18-016913","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036118016913/doc1.xml","form_type":"4"}},{"id":4229525,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Restricted Stock Units","published_at":"2017-08-18T16:49:37.000Z","date":"2017-08-17","kind":"exercise","acquired":false,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The restricted stock units reported as disposed herein were settled for shares of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On August 17, 2015, the reporting person was granted 11,600 restricted stock units, of which 5,000 vested on August 31, 2015, 2,200 vested on August 17, 2016, and 2,200 vested on August 17, 2017.  The remaining 2,200 unvested restricted stock units vest on August 17, 2018.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On August 17, 2015, the reporting person was granted 11,600 restricted stock units, of which 5,000 vested on August 31, 2015, 2,200 vested on August 17, 2016, and 2,200 vested on August 17, 2017.  The remaining 2,200 unvested restricted stock units vest on August 17, 2018.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":2200,"derivative":{"underlying":"Common Stock","underlying_shares":2200},"source":{"system":"sec-edgar","filing":"0001491160-17-000003","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000003/primary_doc.xml","form_type":"4"}},{"id":4229524,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2017-08-18T16:49:37.000Z","date":"2017-08-18","kind":"purchase","acquired":true,"shares":2000,"price":7.95,"value":15900.0,"ownership":{"direct":true},"balance_after":72950,"source":{"system":"sec-edgar","filing":"0001491160-17-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000003/primary_doc.xml","form_type":"4"}},{"id":4229523,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2017-08-18T16:49:37.000Z","date":"2017-08-17","kind":"exercise","acquired":true,"shares":2200,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":70950,"source":{"system":"sec-edgar","filing":"0001491160-17-000003","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000003/primary_doc.xml","form_type":"4"}},{"id":4328262,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2017-05-09T12:25:36.000Z","date":"2017-05-05","kind":"purchase","acquired":true,"shares":5000,"price":10.55,"value":52750.0,"ownership":{"direct":true},"balance_after":68750,"source":{"system":"sec-edgar","filing":"0001491160-17-000002","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000002/primary_doc.xml","form_type":"4"}},{"id":4361223,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Restricted Stock Units","published_at":"2017-04-04T16:23:09.000Z","date":"2017-03-31","kind":"grant","acquired":true,"shares":25000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"On March 31, 2017, the reporting person was granted 25,000 restricted stock units, of which one-third vest on March 31, 2018, one-third vest on March 31, 2019 and one-third vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"On March 31, 2017, the reporting person was granted 25,000 restricted stock units, of which one-third vest on March 31, 2018, one-third vest on March 31, 2019 and one-third vest on March 31, 2020.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":25000,"derivative":{"underlying":"Common Stock","underlying_shares":25000},"source":{"system":"sec-edgar","filing":"0001491160-17-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000001/primary_doc.xml","form_type":"4"}},{"id":4361222,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Restricted Stock Units","published_at":"2017-04-04T16:23:09.000Z","date":"2017-03-31","kind":"exercise","acquired":false,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted stock unit represents a contingent right to receive one share of common stock of Ryerson Holding Corporation."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The restricted stock units reported as disposed herein were settled for shares of common stock of Ryerson Holding Corporation."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"On March 31, 2016, the reporting person was granted 8,250 restricted stock units, of which one-third vested March 31, 2017.  Of the remaining unvested restricted stock units, one-third vest on March 31, 2018 and one-third vest on March 31, 2019.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"On March 31, 2016, the reporting person was granted 8,250 restricted stock units, of which one-third vested March 31, 2017.  Of the remaining unvested restricted stock units, one-third vest on March 31, 2018 and one-third vest on March 31, 2019.  Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":5500,"derivative":{"underlying":"Common Stock","underlying_shares":2750},"source":{"system":"sec-edgar","filing":"0001491160-17-000001","document":"primary_doc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000001/primary_doc.xml","form_type":"4"}},{"id":4361221,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President - South East Region"}}],"security":"Common Stock (par value $0.01 per share)","published_at":"2017-04-04T16:23:09.000Z","date":"2017-03-31","kind":"exercise","acquired":true,"shares":2750,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Shares received upon the vesting of restricted stock units."}],"balance_after":63750,"source":{"system":"sec-edgar","filing":"0001491160-17-000001","document":"primary_doc.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000149116017000001/primary_doc.xml","form_type":"4"}},{"id":4611091,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":140603,"kind":"person","name":"Richardson Kevin D","position":1,"cik":"0001491160","reported_name":"Richardson Kevin D","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President, South-East Region"}}],"security":"Common Stock, par value $0.01 per share","published_at":"2016-09-06T16:10:55.000Z","date":"2016-09-02","kind":"purchase","acquired":true,"shares":1050,"price":12.1,"value":12705.0,"ownership":{"direct":true},"balance_after":61000,"source":{"system":"sec-edgar","filing":"0001140361-16-078927","document":"doc1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1491160/000114036116078927/doc1.xml","form_type":"4"}}]}