{"entity":{"type":"insider","cik":"0001349675","url":"/insider/0001349675","json_url":"/insider/0001349675.json","name":"Hyde Leslie S","name_source":"as-filed","also_issuer":false,"cross_url":null},"coverage_statement":{"n_transactions":35,"n_filings":21,"first":"2006-02-02","last":"2024-03-22","span_basis":"filed_date"},"name_variants":[{"name":"Hyde Leslie S","source":"filing","n_filings":21,"first_seen":"2006-02-02","last_seen":"2024-03-22"}],"transactions":[{"id":3151602,"accession":"0000950170-24-035415","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0000950170-24-035415","line_url":"/filing/0000950170-24-035415#line-6","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":11246.0,"shares_display":"11,246","price_per_share":53.75,"price_display":"53.75","price_state":"stated","total_value":604472.5,"total_display":"604,472.50","shares_owned_after":58852.9136,"shares_owned_after_display":"58,852.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-21","filed_date":"2024-03-22","scope":"insider"},{"id":3151600,"accession":"0000950170-24-035415","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0000950170-24-035415","line_url":"/filing/0000950170-24-035415#line-5","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":6598.0,"shares_display":"6,598","price_per_share":53.77,"price_display":"53.77","price_state":"stated","total_value":354774.46,"total_display":"354,774.46","shares_owned_after":57021.9136,"shares_owned_after_display":"57,021.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-21","filed_date":"2024-03-22","scope":"insider"},{"id":3151598,"accession":"0000950170-24-035415","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000950170-24-035415","line_url":"/filing/0000950170-24-035415#line-4","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3195.0,"shares_display":"3,195","price_per_share":54.51,"price_display":"54.51","price_state":"stated","total_value":174159.45,"total_display":"174,159.45","shares_owned_after":55657.9136,"shares_owned_after_display":"55,657.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-21","filed_date":"2024-03-22","scope":"insider"},{"id":3151595,"accession":"0000950170-24-035415","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0000950170-24-035415","line_url":"/filing/0000950170-24-035415#line-3","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1364.0,"shares_display":"1,364","price_per_share":54.52,"price_display":"54.52","price_state":"stated","total_value":74365.28,"total_display":"74,365.28","shares_owned_after":55657.9136,"shares_owned_after_display":"55,657.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-21","filed_date":"2024-03-22","scope":"insider"},{"id":2203864,"accession":"0000950170-24-026216","txn_seq":8,"anchor":"line-8","filing_url":"/filing/0000950170-24-026216","line_url":"/filing/0000950170-24-026216#line-8","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":210.0,"shares_display":"210","price_per_share":55.08,"price_display":"55.08","price_state":"stated","total_value":11566.8,"total_display":"11,566.80","shares_owned_after":55670.9136,"shares_owned_after_display":"55,670.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-01","filed_date":"2024-03-05","scope":"insider"},{"id":2203860,"accession":"0000950170-24-026216","txn_seq":7,"anchor":"line-7","filing_url":"/filing/0000950170-24-026216","line_url":"/filing/0000950170-24-026216#line-7","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":200.0,"shares_display":"200","price_per_share":55.0,"price_display":"55.00","price_state":"stated","total_value":11000.0,"total_display":"11,000.00","shares_owned_after":55682.9136,"shares_owned_after_display":"55,682.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-01","filed_date":"2024-03-05","scope":"insider"},{"id":2203857,"accession":"0000950170-24-026216","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0000950170-24-026216","line_url":"/filing/0000950170-24-026216#line-6","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":25.0,"shares_display":"25","price_per_share":56.05,"price_display":"56.05","price_state":"stated","total_value":1401.25,"total_display":"1,401.25","shares_owned_after":55657.9136,"shares_owned_after_display":"55,657.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-01","filed_date":"2024-03-05","scope":"insider"},{"id":2203854,"accession":"0000950170-24-026216","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0000950170-24-026216","line_url":"/filing/0000950170-24-026216#line-5","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":13.0,"shares_display":"13","price_per_share":56.09,"price_display":"56.09","price_state":"stated","total_value":729.17,"total_display":"729.17","shares_owned_after":55657.9136,"shares_owned_after_display":"55,657.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2024-03-01","filed_date":"2024-03-05","scope":"insider"},{"id":8465559,"accession":"0000950170-23-067433","txn_seq":12,"anchor":"line-12","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-12","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":8587.0,"shares_display":"8,587","price_per_share":45.11,"price_display":"45.11","price_state":"stated","total_value":387359.57,"total_display":"387,359.57","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-30","filed_date":"2023-12-01","scope":"insider"},{"id":8465557,"accession":"0000950170-23-067433","txn_seq":11,"anchor":"line-11","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-11","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4824.0,"shares_display":"4,824","price_per_share":45.12,"price_display":"45.12","price_state":"stated","total_value":217658.88,"total_display":"217,658.88","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-30","filed_date":"2023-12-01","scope":"insider"},{"id":8465554,"accession":"0000950170-23-067433","txn_seq":10,"anchor":"line-10","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-10","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":3525.0,"shares_display":"3,525","price_per_share":45.12,"price_display":"45.12","price_state":"stated","total_value":159048.0,"total_display":"159,048.00","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-30","filed_date":"2023-12-01","scope":"insider"},{"id":8465540,"accession":"0000950170-23-067433","txn_seq":6,"anchor":"line-6","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-6","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":724.0,"shares_display":"724","price_per_share":45.04,"price_display":"45.04","price_state":"stated","total_value":32608.96,"total_display":"32,608.96","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-29","filed_date":"2023-12-01","scope":"insider"},{"id":8465537,"accession":"0000950170-23-067433","txn_seq":5,"anchor":"line-5","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-5","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":410.0,"shares_display":"410","price_per_share":45.03,"price_display":"45.03","price_state":"stated","total_value":18462.3,"total_display":"18,462.30","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-29","filed_date":"2023-12-01","scope":"insider"},{"id":8465533,"accession":"0000950170-23-067433","txn_seq":4,"anchor":"line-4","filing_url":"/filing/0000950170-23-067433","line_url":"/filing/0000950170-23-067433#line-4","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":313.0,"shares_display":"313","price_per_share":45.01,"price_display":"45.01","price_state":"stated","total_value":14088.13,"total_display":"14,088.13","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-11-29","filed_date":"2023-12-01","scope":"insider"},{"id":8373489,"accession":"0001209191-23-049963","txn_seq":3,"anchor":"line-3","filing_url":"/filing/0001209191-23-049963","line_url":"/filing/0001209191-23-049963#line-3","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":8967.0,"shares_display":"8,967","price_per_share":40.31,"price_display":"40.31","price_state":"stated","total_value":361459.77,"total_display":"361,459.77","shares_owned_after":51870.9136,"shares_owned_after_display":"51,870.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-09-18","filed_date":"2023-09-19","scope":"insider"},{"id":8373484,"accession":"0001209191-23-049963","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-23-049963","line_url":"/filing/0001209191-23-049963#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1485.0,"shares_display":"1,485","price_per_share":41.52,"price_display":"41.52","price_state":"stated","total_value":61657.2,"total_display":"61,657.20","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-09-18","filed_date":"2023-09-19","scope":"insider"},{"id":8155476,"accession":"0001209191-23-048234","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-23-048234","line_url":"/filing/0001209191-23-048234#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2351.0,"shares_display":"2,351","price_per_share":40.0,"price_display":"40.00","price_state":"stated","total_value":94040.0,"total_display":"94,040.00","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-09-01","filed_date":"2023-09-05","scope":"insider"},{"id":8546457,"accession":"0001209191-23-044459","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-23-044459","line_url":"/filing/0001209191-23-044459#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":4096.0,"shares_display":"4,096","price_per_share":38.56,"price_display":"38.56","price_state":"stated","total_value":157941.76,"total_display":"157,941.76","shares_owned_after":50385.9136,"shares_owned_after_display":"50,385.91","ownership_form":"D","is_10b5_1":null,"transaction_date":"2023-08-01","filed_date":"2023-08-03","scope":"insider"},{"id":8619462,"accession":"0001209191-19-050532","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-19-050532","line_url":"/filing/0001209191-19-050532#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP Corp Strategy, Risk Managem)","officer_title":"VP Corp Strategy, Risk Managem","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2687.0,"shares_display":"2,687","price_per_share":29.72,"price_display":"29.72","price_state":"stated","total_value":79857.64,"total_display":"79,857.64","shares_owned_after":31968.4181,"shares_owned_after_display":"31,968.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2019-09-20","filed_date":"2019-09-24","scope":"insider"},{"id":5965742,"accession":"0001209191-18-048694","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-18-048694","line_url":"/filing/0001209191-18-048694#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP Corp Strategy, Risk Managem)","officer_title":"VP Corp Strategy, Risk Managem","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1126.0,"shares_display":"1,126","price_per_share":36.35,"price_display":"36.35","price_state":"stated","total_value":40930.1,"total_display":"40,930.10","shares_owned_after":29929.4181,"shares_owned_after_display":"29,929.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2018-08-27","filed_date":"2018-08-28","scope":"insider"},{"id":4111472,"accession":"0001209191-17-054204","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-17-054204","line_url":"/filing/0001209191-17-054204#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP, Risk Management, Deputy GC)","officer_title":"VP, Risk Management, Deputy GC","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1610.0,"shares_display":"1,610","price_per_share":45.0,"price_display":"45.00","price_state":"stated","total_value":72450.0,"total_display":"72,450.00","shares_owned_after":18117.4181,"shares_owned_after_display":"18,117.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-09-27","filed_date":"2017-09-28","scope":"insider"},{"id":4111470,"accession":"0001209191-17-054204","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-17-054204","line_url":"/filing/0001209191-17-054204#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP, Risk Management, Deputy GC)","officer_title":"VP, Risk Management, Deputy GC","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":200.0,"shares_display":"200","price_per_share":45.0,"price_display":"45.00","price_state":"stated","total_value":9000.0,"total_display":"9,000.00","shares_owned_after":19727.4181,"shares_owned_after_display":"19,727.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-09-26","filed_date":"2017-09-28","scope":"insider"},{"id":4325362,"accession":"0001209191-17-053921","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-17-053921","line_url":"/filing/0001209191-17-053921#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP, Risk Management, Deputy GC)","officer_title":"VP, Risk Management, Deputy GC","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1800.0,"shares_display":"1,800","price_per_share":43.0,"price_display":"43.00","price_state":"stated","total_value":77400.0,"total_display":"77,400.00","shares_owned_after":19927.4181,"shares_owned_after_display":"19,927.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-09-22","filed_date":"2017-09-26","scope":"insider"},{"id":8573040,"accession":"0001209191-23-004220","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001209191-23-004220","line_url":"/filing/0001209191-23-004220#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (SVP, Chief Sustainability Offi)","officer_title":"SVP, Chief Sustainability Offi","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1500.0,"shares_display":"1,500","price_per_share":41.54,"price_display":"41.54","price_state":"stated","total_value":62310.0,"total_display":"62,310.00","shares_owned_after":51096.4181,"shares_owned_after_display":"51,096.42","ownership_form":"D","is_10b5_1":null,"transaction_date":"2017-03-10","filed_date":"2023-01-20","scope":"insider"},{"id":3218436,"accession":"0001209191-16-152925","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-16-152925","line_url":"/filing/0001209191-16-152925#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP, Risk Management, Deputy GC)","officer_title":"VP, Risk Management, Deputy GC","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":1600.0,"shares_display":"1,600","price_per_share":38.61,"price_display":"38.61","price_state":"stated","total_value":61776.0,"total_display":"61,776.00","shares_owned_after":22581.9268,"shares_owned_after_display":"22,581.93","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-11-30","filed_date":"2016-12-02","scope":"insider"},{"id":3085898,"accession":"0001209191-16-139640","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001209191-16-139640","line_url":"/filing/0001209191-16-139640#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2850.0,"shares_display":"2,850","price_per_share":32.48,"price_display":"32.48","price_state":"stated","total_value":92568.0,"total_display":"92,568.00","shares_owned_after":22581.9268,"shares_owned_after_display":"22,581.93","ownership_form":"D","is_10b5_1":null,"transaction_date":"2016-08-31","filed_date":"2016-09-02","scope":"insider"},{"id":7648873,"accession":"0001181431-10-063084","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-10-063084","line_url":"/filing/0001181431-10-063084#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2500.0,"shares_display":"2,500","price_per_share":35.0,"price_display":"35.00","price_state":"stated","total_value":87500.0,"total_display":"87,500.00","shares_owned_after":9796.0821,"shares_owned_after_display":"9,796.08","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-12-17","filed_date":"2010-12-21","scope":"insider"},{"id":7422724,"accession":"0001181431-10-025930","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-10-025930","line_url":"/filing/0001181431-10-025930#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2500.0,"shares_display":"2,500","price_per_share":32.0,"price_display":"32.00","price_state":"stated","total_value":80000.0,"total_display":"80,000.00","shares_owned_after":12380.0821,"shares_owned_after_display":"12,380.08","ownership_form":"D","is_10b5_1":null,"transaction_date":"2010-05-10","filed_date":"2010-05-12","scope":"insider"},{"id":5753318,"accession":"0001181431-09-010939","txn_seq":2,"anchor":"line-2","filing_url":"/filing/0001181431-09-010939","line_url":"/filing/0001181431-09-010939#line-2","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1000.0,"shares_display":"1,000","price_per_share":14.0,"price_display":"14.00","price_state":"stated","total_value":14000.0,"total_display":"14,000.00","shares_owned_after":12520.3121,"shares_owned_after_display":"12,520.31","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-02-24","filed_date":"2009-02-24","scope":"insider"},{"id":5753317,"accession":"0001181431-09-010939","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-09-010939","line_url":"/filing/0001181431-09-010939#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1000.0,"shares_display":"1,000","price_per_share":15.0,"price_display":"15.00","price_state":"stated","total_value":15000.0,"total_display":"15,000.00","shares_owned_after":11520.3121,"shares_owned_after_display":"11,520.31","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-02-20","filed_date":"2009-02-24","scope":"insider"},{"id":9250943,"accession":"0001181431-09-005103","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-09-005103","line_url":"/filing/0001181431-09-005103#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1000.0,"shares_display":"1,000","price_per_share":16.0,"price_display":"16.00","price_state":"stated","total_value":16000.0,"total_display":"16,000.00","shares_owned_after":10520.3121,"shares_owned_after_display":"10,520.31","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-01-23","filed_date":"2009-01-28","scope":"insider"},{"id":5773463,"accession":"0001181431-09-004864","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-09-004864","line_url":"/filing/0001181431-09-004864#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (Vice President, Safety and Env)","officer_title":"Vice President, Safety and Env","security_title":"Common Stock","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1000.0,"shares_display":"1,000","price_per_share":16.0,"price_display":"16.00","price_state":"stated","total_value":16000.0,"total_display":"16,000.00","shares_owned_after":7075.0,"shares_owned_after_display":"7,075","ownership_form":"D","is_10b5_1":null,"transaction_date":"2009-01-23","filed_date":"2009-01-27","scope":"insider"},{"id":4019701,"accession":"0001181431-06-064219","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-06-064219","line_url":"/filing/0001181431-06-064219#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP, Safety and Environmental)","officer_title":"VP, Safety and Environmental","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2500.0,"shares_display":"2,500","price_per_share":22.0,"price_display":"22.00","price_state":"stated","total_value":55000.0,"total_display":"55,000.00","shares_owned_after":5950.0,"shares_owned_after_display":"5,950","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-11-14","filed_date":"2006-11-16","scope":"insider"},{"id":4582614,"accession":"0001181431-06-059409","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001181431-06-059409","line_url":"/filing/0001181431-06-059409#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (V.P., Safety and Env Affairs)","officer_title":"V.P., Safety and Env Affairs","security_title":"Common Stock","transaction_code":"S","transaction_label":"Open-market sale","open_market":true,"acquired_disposed":"D","direction_word":"disposed","shares":2500.0,"shares_display":"2,500","price_per_share":20.0,"price_display":"20.00","price_state":"stated","total_value":50000.0,"total_display":"50,000.00","shares_owned_after":8450.0,"shares_owned_after_display":"8,450","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-10-23","filed_date":"2006-10-24","scope":"insider"},{"id":4658084,"accession":"0001140361-06-001506","txn_seq":1,"anchor":"line-1","filing_url":"/filing/0001140361-06-001506","line_url":"/filing/0001140361-06-001506#line-1","is_derivative":false,"issuer_cik":"0001315257","issuer_name":"Koppers Holdings Inc.","issuer_ticker":"KOP","issuer_name_source":null,"issuer_url":"/issuer/0001315257","owner_cik":"0001349675","owner_name":"Hyde Leslie S","owner_url":"/insider/0001349675","role":"Officer (VP Sfty Env.Aff.Koppers Inc)","officer_title":"VP Sfty Env.Aff.Koppers Inc.","security_title":"Common stock, par value $0.01 per share","transaction_code":"P","transaction_label":"Open-market purchase","open_market":true,"acquired_disposed":"A","direction_word":"acquired","shares":1000.0,"shares_display":"1,000","price_per_share":14.0,"price_display":"14.00","price_state":"stated","total_value":14000.0,"total_display":"14,000.00","shares_owned_after":10950.0,"shares_owned_after_display":"10,950","ownership_form":"D","is_10b5_1":null,"transaction_date":"2006-01-31","filed_date":"2006-02-02","scope":"insider"}],"next_cursor":null,"ledger_fault":false,"count":{"value":35,"kind":"exact"},"open_market_only":false,"composition":{"kind":"exact","rows":[{"code":"P","label":"Open-market purchase","n":5,"open_market":true},{"code":"S","label":"Open-market sale","n":30,"open_market":true},{"code":"M","label":"Option exercise","n":0,"open_market":false},{"code":"A","label":"Grant or award","n":0,"open_market":false},{"code":"F","label":"Tax withholding","n":0,"open_market":false},{"code":"D","label":"Disposition to the issuer","n":0,"open_market":false},{"code":"X","label":"In-the-money option exercise","n":0,"open_market":false}],"total":35},"affiliations":[{"type":"issuer","type_label":"ISSUER","cik":"0001315257","name":"Koppers Holdings Inc.","url":"/issuer/0001315257","role":"Officer (SVP, Chief Sustainability Offi)","n_filings":21,"first_seen":"2006-02-02","last_seen":"2024-03-22"}],"order_statement":"Newest transaction date first, id breaking the tie.","canonical_url":"https://ebomi.com/insider/0001349675","retrieved_at":"2026-08-21T23:03:11+00:00","coverage":{"filings":1505395,"transactions":4290787,"issuers":28597,"insiders":152303,"first_filed_date":"2003-06-30","last_filed_date":"2026-08-20","last_ingest":"2026-08-21T05:23:33.898496+00:00","counts_are":{"filings":"estimate","transactions":"estimate","issuers":"estimate","insiders":"estimate"},"source":"SEC EDGAR Form 4 filings, parsed by ebomi","fault":false},"license":{"underlying_records":"US SEC filings are public records of the United States government and are not subject to copyright. The transactional facts in them are not ours to license.","this_presentation":"The parsing, normalisation, curation, and presentation are ebomi's own work.","grant":"undecided","grant_note":"The open licence for ebomi's own layer is an open owner decision (SPEC-20260731T1159Z open question 3: CC BY 4.0 or CC0 with a citation request). Until it is taken, no grant is asserted here.","citation_request":"Balogh, A. Insider trading. Scientific Data 10, 237 (2023)","url":"https://ebomi.com/license"},"fair_use":{"policy":"These JSON endpoints are open and unauthenticated. Please read them at a human pace, identify your client in the User-Agent header, and use the published dataset for bulk work rather than crawling page by page.","bulk_alternative":"doi:10.1038/s41597-023-02147-6"}}