{"transactions":[{"id":776640,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2026-05-15T20:41:26.000Z","date":"2026-05-13","kind":"sale","planned":false,"acquired":false,"shares":12735301,"price":15.168,"value":193169045.568,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 13, 2026, GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\"), sold a total of 12,735,301 shares of Common Stock of Sotera Health Company in an underwritten public secondary offering."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Each of Partners XI/A&C, Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":0,"source":{"system":"sec-edgar","filing":"0001193125-26-227029","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000119312526227029/ownership.xml","form_type":"4"}},{"id":850307,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2026-03-10T22:10:40.000Z","date":"2026-03-06","kind":"sale","planned":false,"acquired":false,"shares":10000000,"price":15.27,"value":152700000.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 6, 2026, the GTCR XI Funds (as defined below) sold a total of 10,000,000 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 10,107,727 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 2,546,564 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 81,010 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":12735301,"source":{"system":"sec-edgar","filing":"0001193125-26-100568","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000119312526100568/ownership.xml","form_type":"4"}},{"id":978712,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2025-12-06T01:10:14.000Z","date":"2025-12-03","kind":"sale","planned":false,"acquired":false,"shares":6480000,"price":16.33,"value":105818400.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On December 3, 2025, the GTCR XI Funds (as defined below) sold a total of 6,480,000 shares of Common Stock of Sotera Health Company (the \"Issuer\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the sale, consists of (i) 18,044,507 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 4,546,174 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 144,620 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":22735301,"source":{"system":"sec-edgar","filing":"0001193125-25-310122","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000119312525310122/ownership.xml","form_type":"4"}},{"id":1001477,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2025-11-12T22:06:21.000Z","date":"2025-11-10","kind":"sale","planned":false,"acquired":false,"shares":12000000,"price":15.651,"value":187812000.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 10, 2025, the GTCR XI Funds (as defined below) sold a total of 12,000,000 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 23,187,541 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 5,841,921 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 185,839 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":29215301,"source":{"system":"sec-edgar","filing":"0001193125-25-277915","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000119312525277915/ownership.xml","form_type":"4"}},{"id":1044583,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2025-09-10T00:41:57.000Z","date":"2025-09-05","kind":"sale","planned":false,"acquired":false,"shares":8000000,"price":15.111,"value":120888000.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 5, 2025, the GTCR XI Funds (as defined below) sold a total of 8,000,000 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 32,711,677 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 8,241,453 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 262,171 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":41215301,"source":{"system":"sec-edgar","filing":"0001193125-25-199493","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000119312525199493/ownership.xml","form_type":"4"}},{"id":1411635,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":3,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":4,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2024-09-09T21:36:42.000Z","date":"2024-09-06","kind":"sale","planned":false,"acquired":false,"shares":10000000,"price":15.03,"value":150300000.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On September 6, 2024, the GTCR XI Funds (as defined below) sold a total of 10,000,000 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 39,061,101 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 9,841,141 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 313,059 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":49215301,"source":{"system":"sec-edgar","filing":"0001999371-24-011707","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000199937124011707/ownership.xml","form_type":"4"}},{"id":1590835,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2024-03-06T22:35:47.000Z","date":"2024-03-04","kind":"sale","planned":false,"acquired":false,"shares":11062908,"price":14.3075,"value":158282556.21,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 4, 2024, the GTCR XI Funds (as defined below) sold a total of 11,062,908 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 46,997,881 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 11,840,751 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 376,669 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Aaron D. Cohen, Sean L. Cunningham, Benjamin J. Daverman, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":59215301,"source":{"system":"sec-edgar","filing":"0001999371-24-003174","document":"sotera-form4_030424.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000199937124003174/sotera-form4_030424.xml","form_type":"4"}},{"id":2772845,"issuer":{"id":3869,"kind":"organization","name":"Sotera Health Co"},"owners":[{"id":46802,"kind":"person","name":"GTCR INVESTMENT XI LLC","position":1,"cik":"0001827977","reported_name":"GTCR INVESTMENT XI LLC","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46803,"kind":"person","name":"GTCR FUND XI/A LP","position":2,"cik":"0001591434","reported_name":"GTCR FUND XI/A LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46804,"kind":"person","name":"GTCR FUND XI/C LP","position":3,"cik":"0001591436","reported_name":"GTCR FUND XI/C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46805,"kind":"person","name":"GTCR CO-INVEST XI LP","position":4,"cik":"0001591432","reported_name":"GTCR CO-INVEST XI LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":46806,"kind":"person","name":"GTCR PARTNERS XI/A&C LP","position":5,"cik":"0001828028","reported_name":"GTCR PARTNERS XI/A&C LP","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock, $0.01 par value per share (\"Common Stock\")","published_at":"2021-03-25T00:57:27.000Z","date":"2021-03-22","kind":"sale","acquired":false,"shares":9008388,"price":26.1225,"value":235321615.53,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 22, 2021, the GTCR XI Funds (as defined below) sold a total of 9,008,388 shares of Common Stock of Sotera Health Company (the \"Issuer\") in an underwritten public secondary offering (the \"Offering\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Following the Offering, consists of (i) 55,778,268 shares of Common Stock held directly by GTCR Fund XI/A LP, a Delaware limited partnership (\"Fund XI/A\"), (ii) 14,052,901 shares of Common Stock held directly by GTCR Fund XI/C LP, a Delaware limited partnership (\"Fund XI/C\"), and (iii) 447,040 shares of Common Stock held directly by GTCR Co-Invest XI LP, a Delaware limited partnership (\"Co-Invest XI\", and together with Fund XI/A and Fund XI/C, the \"GTCR XI Funds\")."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"GTCR Partners XI/A&C LP (\"Partners XI/A&C\") is the general partner of each of Fund XI/A and Fund XI/C. GTCR Investment XI LLC (\"Investment XI\" and together with the GTCR XI Funds and Partners XI/A&C, the \"GTCR Entities\"), is the general partner of Co-Invest XI and Partners XI/A&C. Investment XI is managed by a board of managers (the \"GTCR Board of Managers\") consisting of Mark M. Anderson, Craig A. Bondy, Aaron D. Cohen, Sean L. Cunningham, Benjamin J. Daverman, David A Donnini, Constantine S. Mihas and Collin E. Roche, and no single person has voting or dispositive authority over the shares of Common Stock."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F4","text":"Each of GTCR Partners XI/A&C, GTCR Investment XI and the GTCR Board of Managers may be deemed to share beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds, and each of the individual members of the GTCR Board of Managers disclaims beneficial ownership of the shares of Common Stock held of record by the GTCR XI Funds except to the extent of his pecuniary interest therein."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F5","text":"Each of the reporting persons is a director-by-deputization solely for purposes of Section 16 of the Exchange Act. Information with respect to each of the GTCR Entities is given solely by such GTCR Entity, and no GTCR Entity has responsibility for the accuracy or completeness of information supplied by another GTCR Entity."}],"balance_after":70278209,"source":{"system":"sec-edgar","filing":"0001387131-21-003869","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1591434/000138713121003869/ownership.xml","form_type":"4"}}]}