{"transactions":[{"id":4623439,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-09-21T20:44:30.000Z","date":"2026-09-17","kind":"grant","planned":false,"acquired":true,"shares":123.504,"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 (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2026 and outstanding as of September 17, 2026. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2027, March 31, 2028, and March 31, 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2026 and outstanding as of September 17, 2026. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2027, March 31, 2028, and March 31, 2029."}],"balance_after":16379.803,"derivative":{"underlying":"Common Stock","underlying_shares":123.504},"source":{"system":"sec-edgar","filing":"0000899140-26-001073","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026001073/form4.xml","form_type":"4"}},{"id":702967,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-07-28T00:36:37.000Z","date":"2026-07-23","kind":"grant","planned":false,"acquired":true,"shares":5000,"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 (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"Reflects compensation in the form of restricted stock units received pursuant to the Third Amended and Restated Ryerson Stock Plan."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"These unvested restricted stock units will vest on March 31, 2027."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"These unvested restricted stock units will vest on March 31, 2027."}],"balance_after":5000,"derivative":{"underlying":"Common Stock","underlying_shares":5000},"source":{"system":"sec-edgar","filing":"0000899140-26-000740","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026000740/form4.xml","form_type":"4"}},{"id":729093,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-06-23T21:14:24.000Z","date":"2026-06-18","kind":"grant","planned":false,"acquired":true,"shares":109.299,"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 (the \"Company\")."},{"field":"shares","element":"transactionShares","label":"F2","text":"Represents dividend equivalent rights that accrued on the underlying award of restricted stock units. Dividend equivalent rights accrue when and as dividends are paid on the common shares underlying the applicable restricted share units and vest proportionately with and are subject to settlement and expiration upon the same terms as the restricted stock units to which they relate."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2026 and outstanding as of June 18, 2026. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2027, March 31, 2028, and March 31, 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The dividend equivalent rights accrued on restricted stock units that were granted on March 31, 2026 and outstanding as of June 18, 2026. These unvested restricted stock units, and the dividend equivalent rights related to such unvested restricted stock units, will vest on March 31, 2027, March 31, 2028, and March 31, 2029."}],"balance_after":16256.299,"derivative":{"underlying":"Common Stock","underlying_shares":109.299},"source":{"system":"sec-edgar","filing":"0000899140-26-000679","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026000679/form4.xml","form_type":"4"}},{"id":773225,"issuer":{"id":4243,"kind":"organization","name":"CBIZ, Inc.","symbol":"CBZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true}}],"security":"Common Stock","published_at":"2026-05-19T20:38:13.000Z","date":"2026-05-15","kind":"grant","planned":false,"acquired":true,"shares":6051,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Restricted Stock vesting 50% in each of the two years following date of award. Annual non-employee Director compensation grant awarded."}],"balance_after":18887,"source":{"system":"sec-edgar","filing":"0000944148-26-000078","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/944148/000094414826000078/form4.xml","form_type":"4"}},{"id":819463,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-04-03T00:46:48.000Z","date":"2026-03-31","kind":"grant","planned":false,"acquired":true,"shares":16147.56,"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 the Company."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"On March 31, 2026, the reporting person was granted 16,147.56 restricted stock units, of which 5,382.52 will vest on the first anniversary of the grant date, 5,382.52 will vest on the second anniversary of the grant date and 5,382.52 will vest on the third anniversary of the grant date. 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":"F2","text":"On March 31, 2026, the reporting person was granted 16,147.56 restricted stock units, of which 5,382.52 will vest on the first anniversary of the grant date, 5,382.52 will vest on the second anniversary of the grant date and 5,382.52 will vest on the third anniversary of the grant date. Vested shares will be delivered to the reporting person not later than 60 days following such vesting dates."}],"balance_after":16147.56,"derivative":{"underlying":"Common Stock","underlying_shares":16147.56},"source":{"system":"sec-edgar","filing":"0000899140-26-000358","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026000358/form4.xml","form_type":"4"}},{"id":902174,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Share Units","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":38684,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Company common stock."},{"field":"price","element":"transactionPricePerShare","label":"F7","text":"These RSUs are fully vested and were contributed to and used to fund the Reporting Person's account balance in the Supplemental Executive Retirement Plan (\"SERP\"). Pursuant to the Merger Agreement, these RSUs were cancelled and converted into a cash amount equal to the number of shares of Company common stock underlying the award, multiplied by 1.7105, and further multiplied by the closing price per share of Parent common stock on February 13, 2026. Such cash amount shall be credited to the Reporting Person's SERP account, and will otherwise remain subject to the payment timing requirements and other terms of the SERP."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"These RSUs are fully vested and were contributed to and used to fund the Reporting Person's account balance in the Supplemental Executive Retirement Plan (\"SERP\"). Pursuant to the Merger Agreement, these RSUs were cancelled and converted into a cash amount equal to the number of shares of Company common stock underlying the award, multiplied by 1.7105, and further multiplied by the closing price per share of Parent common stock on February 13, 2026. Such cash amount shall be credited to the Reporting Person's SERP account, and will otherwise remain subject to the payment timing requirements and other terms of the SERP."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"These RSUs are fully vested and were contributed to and used to fund the Reporting Person's account balance in the Supplemental Executive Retirement Plan (\"SERP\"). Pursuant to the Merger Agreement, these RSUs were cancelled and converted into a cash amount equal to the number of shares of Company common stock underlying the award, multiplied by 1.7105, and further multiplied by the closing price per share of Parent common stock on February 13, 2026. Such cash amount shall be credited to the Reporting Person's SERP account, and will otherwise remain subject to the payment timing requirements and other terms of the SERP."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":38684},"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":902173,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Share Units","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":4936,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Company common stock."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"These RSUs are fully vested. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share) and then cancelled in exchange for a cash payment equal to the number of shares of Parent common stock underlying the award, multiplied by the closing price per share of Parent common stock on February 13, 2026 (less applicable taxes), payable within 30 days of such date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"These RSUs are fully vested. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share) and then cancelled in exchange for a cash payment equal to the number of shares of Parent common stock underlying the award, multiplied by the closing price per share of Parent common stock on February 13, 2026 (less applicable taxes), payable within 30 days of such date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F6","text":"These RSUs are fully vested. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share) and then cancelled in exchange for a cash payment equal to the number of shares of Parent common stock underlying the award, multiplied by the closing price per share of Parent common stock on February 13, 2026 (less applicable taxes), payable within 30 days of such date."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":4936},"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":902172,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Share Units","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":11000,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Company common stock."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"These RSUs generally vest on December 31, 2027, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"These RSUs generally vest on December 31, 2027, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"These RSUs generally vest on December 31, 2027, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":11000},"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":902171,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Share Units","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":8246,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Company common stock."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These RSUs generally vest on December 31, 2026, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"These RSUs generally vest on December 31, 2026, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"These RSUs generally vest on December 31, 2026, subject to the Reporting Person's continued employment and will be settled within 90 days following the applicable vesting date. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":8246},"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":902170,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Share Units","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":70802,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F2","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Company common stock."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"These RSUs are fully vested and will generally be settled upon the Reporting Person's separation from service. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"These RSUs are fully vested and will generally be settled upon the Reporting Person's separation from service. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"These RSUs are fully vested and will generally be settled upon the Reporting Person's separation from service. Pursuant to the Merger Agreement, these RSUs were converted into RSUs with respect to Parent common stock by multiplying the number of shares of Company common stock underlying the award by 1.7105 (rounded down to the nearest whole share)."}],"balance_after":0,"derivative":{"underlying":"Common Stock","underlying_shares":70802},"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":902169,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2026-02-17T17:25:16.000Z","date":"2026-02-13","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":73249,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Disposed of pursuant to the Agreement and Plan of Merger (\"Merger Agreement\"), dated as of October 28, 2025, by and among Olympic Steel, Inc. (the \"Company\"), Ryerson Holding Corporation (\"Parent\"), and Crimson MS Corp. At the effective time of the merger, each share of the Company's common stock, without par value (\"Company common stock\"), that was issued and outstanding immediately prior to the effective time of the merger was converted into the right to receive a number of shares of common stock, $0.01 par value per share, of Parent (\"Parent common stock\"), multiplied by 1.7105 (rounded down to the nearest whole share), plus a cash payment (rounded down to the nearest cent) in lieu of any fractional shares as determined pursuant to the Merger Agreement."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001193125-26-053952","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000119312526053952/ownership.xml","form_type":"4"}},{"id":905108,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-02-14T01:06:40.000Z","date":"2026-02-13","kind":"grant","planned":false,"acquired":true,"shares":150496,"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 the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F11","text":"The Reporting Person received a one-time sign-on restricted stock unit award in connection with the Merger, which will vest on the third anniversary of the closing date of the Merger. Vested shares will be delivered to the reporting person upon vesting."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F11","text":"The Reporting Person received a one-time sign-on restricted stock unit award in connection with the Merger, which will vest on the third anniversary of the closing date of the Merger. Vested shares will be delivered to the reporting person upon vesting."}],"balance_after":150496,"derivative":{"underlying":"Common Stock","underlying_shares":150496},"source":{"system":"sec-edgar","filing":"0000899140-26-000207","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026000207/form4.xml","form_type":"4"}},{"id":905107,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-02-14T01:06:40.000Z","date":"2026-02-13","kind":"grant","planned":false,"acquired":true,"shares":18815,"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 the Issuer."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Pursuant to the Merger Agreement, at the effective time, the reporting person's Olympic Steel restricted stock units were assumed and converted into restricted stock units with respect to a number of shares of the Issuer's common stock (rounded down to the nearest whole share) determined by multiplying (i) the number of shares of Olympic Steel common stock subject to the Olympic Steel restricted stock unit immediately prior to the effective time of the Merger by (ii) the Exchange Ratio. The converted restricted stock units will otherwise be subject to the same terms and conditions as were applicable to the Olympic Steel restricted stock units prior to the effective time of the Merger."},{"field":"price","element":"transactionPricePerShare","label":"F10","text":"The Reporting Person received 18,815 restricted stock units of the Issuer in exchange for restricted stock units with respect to 11,000 shares of Olympic Steel's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F9","text":"The restricted stock units will vest on December 31, 2027. Vested shares will be delivered to the reporting person within 90 days following the vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F9","text":"The restricted stock units will vest on December 31, 2027. Vested shares will be delivered to the reporting person within 90 days following the vesting date."}],"balance_after":18815,"derivative":{"underlying":"Common Stock","underlying_shares":18815},"source":{"system":"sec-edgar","filing":"0000899140-26-000207","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1481582/000089914026000207/form4.xml","form_type":"4"}},{"id":905106,"issuer":{"id":4782,"kind":"organization","name":"Ryerson Holding Corp","symbol":"RYZ"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":true,"officer":true,"officer_title":"President & COO"}}],"security":"Restricted Stock Units","published_at":"2026-02-14T01:06:40.000Z","date":"2026-02-13","kind":"grant","planned":false,"acquired":true,"shares":14104,"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 the Issuer."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"Pursuant to the Merger Agreement, at the effective time, the reporting person's Olympic Steel restricted stock units were assumed and converted into restricted stock units with respect to a number of shares of the Issuer's common stock (rounded down to the nearest whole share) determined by multiplying (i) the number of shares of Olympic Steel common stock subject to the Olympic Steel restricted stock unit immediately prior to the effective time of the Merger by (ii) the Exchange Ratio. The converted restricted stock units will otherwise be subject to the same terms and conditions as were applicable to the Olympic Steel restricted stock units prior to the effective time of the Merger."},{"field":"price","element":"transactionPricePerShare","label":"F8","text":"The Reporting Person received 14,104 restricted stock units of the Issuer in exchange for restricted stock units with respect to 8,246 shares of Olympic Steel's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"The restricted stock units will vest on December 31, 2026. Vested shares will be delivered to the reporting person within 90 days following the vesting date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F7","text":"The restricted stock units will vest on December 31, 2026. 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The converted restricted stock units will otherwise be subject to the same terms and conditions as were applicable to the Olympic Steel restricted stock units prior to the effective time of the Merger."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"The Reporting Person received 88,101 restricted stock units of the Issuer in exchange for restricted stock units with respect to 51,506 shares of Olympic Steel's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units have fully vested. Vested shares will be delivered to the reporting person upon separation of service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units have fully vested. 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The converted restricted stock units will otherwise be subject to the same terms and conditions as were applicable to the Olympic Steel restricted stock units prior to the effective time of the Merger."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"The Reporting Person received 33,005 restricted stock units of the Issuer in exchange for restricted stock units with respect to 19,296 shares of Olympic Steel's common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The restricted stock units have fully vested. Vested shares will be delivered to the reporting person upon separation of service."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The restricted stock units have fully vested. 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(\"Olympic Steel\") in connection with the merger between Olympic Steel and the Issuer (the \"Merger\") pursuant to the terms of the Agreement and Plan of Merger, dated as of October 28, 2025 (the \"Merger Agreement\"), by and among the Issuer, Olympic Steel and Crimson MS Corp. 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2007 Omnibus Incentive Plan, as amended (the \"Plan\") on January 1, 2023 and converted into shares of common stock on a one-for-one basis on January 1, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The total number of RSUs includes previously granted RSUs with different vesting and payment terms."}],"balance_after":133668,"derivative":{"underlying":"Common Stock","underlying_shares":11000},"source":{"system":"sec-edgar","filing":"0001437749-26-000313","document":"rdgdoc.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/917470/000143774926000313/rdgdoc.xml","form_type":"4"}},{"id":953460,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD 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These RSUs vest on December 31, 2027 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. Vesting and settlement may also occur earlier in limited circumstances as specified in the applicable award documents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were granted under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan, as amended (the \"Plan\"). These RSUs vest on December 31, 2027 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. 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These RSUs vest on December 31, 2026 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. Vesting and settlement may also occur earlier in limited circumstances as specified in the applicable award documents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were granted under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan, as amended. These RSUs vest on December 31, 2026 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. 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These RSUs vest on December 31, 2025 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. Vesting and settlement may also occur earlier in limited circumstances as specified in the applicable award documents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were granted under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan, as amended. These RSUs vest on December 31, 2025 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. 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These RSUs vest on January 1, 2025 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. Vesting and settlement may also occur earlier in limited circumstances as specified in the applicable award documents."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were granted under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan, as amended. These RSUs vest on January 1, 2025 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. Any vested RSUs generally will be settled within 90 days following the applicable vesting date. 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These RSUs vest on July 5, 2024 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. Any vested RSUs will be settled within 30 days following the first to occur of the Reporting Person's death, disability or retirement after the Reporting Person has attained the age of 62. Vesting and settlement may also occur earlier in limited circumstances as specified in the award agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were acquired under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan. These RSUs vest on July 5, 2024 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. 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These RSUs vest on January 1, 2024 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. These RSUs will be settled upon attainment of age 62, no earlier than six months following retirement, termination of employment or separation from service, as described in the award agreement. Vesting and settlement may also occur earlier in limited circumstances as specified in the award agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were acquired under Olympic Steel's 2007 Omnibus Incentive Plan, as amended. These RSUs vest on January 1, 2024 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. 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Vesting and settlement may also occur earlier in limited circumstances as specified in the award agreement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This total number of RSUs includes previously-granted RSUs with different vesting and payment terms."}],"balance_after":105969,"derivative":{"underlying":"Common Stock","underlying_shares":51506},"source":{"system":"sec-edgar","filing":"0000899243-19-000300","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924319000300/doc4.xml","form_type":"4"}},{"id":3738289,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common Stock","published_at":"2018-12-10T21:51:29.000Z","date":"2018-12-06","kind":"purchase","acquired":true,"shares":3000,"price":17.1475,"value":51442.5,"ownership":{"direct":true},"balance_after":33614,"source":{"system":"sec-edgar","filing":"0000899243-18-030547","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924318030547/doc4.xml","form_type":"4"}},{"id":3871363,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Stock Units","published_at":"2018-07-09T20:12:54.000Z","date":"2018-07-05","kind":"grant","acquired":true,"shares":822,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Olympic Steel, Inc. common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were acquired under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan. These RSUs vest on July 5, 2023 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. Any vested RSUs will be settled within 30 days following the first to occur of the Reporting Person's death, disability or retirement after the Reporting Person has attained the age of 62. Vesting and settlement may also occur earlier in limited circumstances as specified in the award agreement."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were acquired under Olympic Steel's Amended and Restated 2007 Omnibus Incentive Plan. These RSUs vest on July 5, 2023 if the Reporting Person continues to be an employee of Olympic Steel (or its subsidiaries or affiliates) in the same or a higher position on such date. Any vested RSUs will be settled within 30 days following the first to occur of the Reporting Person's death, disability or retirement after the Reporting Person has attained the age of 62. Vesting and settlement may also occur earlier in limited circumstances as specified in the award agreement."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This total number of RSUs includes previously-granted RSUs with different vesting and payment terms."}],"balance_after":54463,"derivative":{"underlying":"Common Stock","underlying_shares":822},"source":{"system":"sec-edgar","filing":"0000899243-18-019645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924318019645/doc4.xml","form_type":"4"}},{"id":3995313,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Share Units","published_at":"2018-03-15T22:28:26.000Z","date":"2018-03-13","kind":"grant","acquired":true,"shares":4261,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"Each restricted share unit (\"RSU\") represents the contingent right to receive one share of Olympic Steel, Inc. (the \"Company\") common stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"These RSUs were acquired in connection with the Company's Supplemental Executive Retirement Plan, are fully vested for the Reporting Person, and will be settled upon the earlier of age 62 or departure from the Company (or earlier in limited circumstances specified in the award agreement)."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F2","text":"These RSUs were acquired in connection with the Company's Supplemental Executive Retirement Plan, are fully vested for the Reporting Person, and will be settled upon the earlier of age 62 or departure from the Company (or earlier in limited circumstances specified in the award agreement)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This total number of RSUs includes previously-granted RSUs with different vesting and payment terms."}],"balance_after":53641,"derivative":{"underlying":"Common Stock","underlying_shares":4261},"source":{"system":"sec-edgar","filing":"0000899243-18-007610","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924318007610/doc4.xml","form_type":"4"}},{"id":4234384,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Common 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Stock","published_at":"2017-05-18T13:56:15.000Z","date":"2017-05-16","kind":"purchase","acquired":true,"shares":550,"price":18.062,"value":9934.1,"ownership":{"direct":true},"balance_after":28614,"source":{"system":"sec-edgar","filing":"0000899243-17-013631","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924317013631/doc4.xml","form_type":"4"}},{"id":4385056,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD T","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Financial Officer"}}],"security":"Restricted Share 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Person, and will be settled upon the earlier of age 62 or departure from the Issuer (or earlier in limited circumstances specified in the award agreement)."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This total number of RSUs includes previously-granted RSUs with different vesting and payment terms."}],"balance_after":49380,"derivative":{"underlying":"Common Stock","underlying_shares":2926},"source":{"system":"sec-edgar","filing":"0000899243-17-007603","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924317007603/doc4.xml","form_type":"4"}},{"id":4387135,"issuer":{"id":66305,"kind":"organization","name":"OLYMPIC STEEL INC","symbol":"ZEUS"},"owners":[{"id":28538,"kind":"person","name":"MARABITO RICHARD T","position":1,"cik":"0001255662","reported_name":"MARABITO RICHARD 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The Reporting Person undertakes to provide, upon request by the Commission Staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares purchased at each separate price."}],"balance_after":28064,"source":{"system":"sec-edgar","filing":"0000899243-17-007426","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/917470/000089924317007426/doc4.xml","form_type":"4"}}]}