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Actual prices ranged from $185.00 to $185.790. The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":56800,"source":{"system":"sec-edgar","filing":"0001225208-24-005505","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824005505/doc4.xml","form_type":"4"}},{"id":1577880,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-14T19:33:34.000Z","date":"2024-03-12","kind":"sale","planned":false,"acquired":false,"shares":2035,"price":186.2548,"value":379028.518,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"1)\tPrice is the volume weighted average selling price of all sales by the reporting person on the transaction date within a one dollar range. Actual prices ranged from $185.8435 to $186.7176. The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":67800,"source":{"system":"sec-edgar","filing":"0001225208-24-004244","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824004244/doc4.xml","form_type":"4"}},{"id":1577879,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-14T19:33:34.000Z","date":"2024-03-12","kind":"sale","planned":false,"acquired":false,"shares":1964,"price":185.1675,"value":363668.97,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"1)\tPrice is the volume weighted average selling price of all sales by the reporting person on the transaction date within a one dollar range. 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The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":69835,"source":{"system":"sec-edgar","filing":"0001225208-24-004244","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824004244/doc4.xml","form_type":"4"}},{"id":1577878,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-14T19:33:34.000Z","date":"2024-03-12","kind":"sale","planned":false,"acquired":false,"shares":100,"price":186.8762,"value":18687.62,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"1)\tPrice is the volume weighted average selling price of all sales by the reporting person on the transaction date within a one dollar range. 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The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":71799,"source":{"system":"sec-edgar","filing":"0001225208-24-004244","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824004244/doc4.xml","form_type":"4"}},{"id":1577877,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-14T19:17:31.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":15416,"price":185.92,"value":2866142.72,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On March 12, 2024, the reporting person filed a Form 4 which inadvertently reported the incorrect number of shares withheld for tax purposes.  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Actual prices ranged from $182.11 to $183.06. The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":51869,"source":{"system":"sec-edgar","filing":"0001225208-24-003453","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824003453/doc4.xml","form_type":"4"}},{"id":1605425,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-04T21:13:18.000Z","date":"2024-03-01","kind":"sale","planned":false,"acquired":false,"shares":2704,"price":183.3382,"value":495746.4928,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"1)\tPrice is the volume weighted average selling price of all sales by the reporting person on the transaction date within a one dollar range. Actual prices ranged from $183.12 to $183.60. The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":59695,"source":{"system":"sec-edgar","filing":"0001225208-24-003453","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824003453/doc4.xml","form_type":"4"}},{"id":1605424,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-03-04T21:13:18.000Z","date":"2024-03-01","kind":"sale","planned":false,"acquired":false,"shares":100,"price":184.2134,"value":18421.34,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"1)\tPrice is the volume weighted average selling price of all sales by the reporting person on the transaction date within a one dollar range. Actual prices ranged from $184.21 to $184.22. The reporting person hereby undertakes to provide upon request of the Commission staff, the issuer, or a security holder of the issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":62399,"source":{"system":"sec-edgar","filing":"0001225208-24-003453","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824003453/doc4.xml","form_type":"4"}},{"id":1627565,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2024-02-22T15:32:39.000Z","date":"2024-02-20","kind":"grant","planned":false,"acquired":true,"shares":25452,"price":0,"value":0.0,"ownership":{"direct":true},"balance_after":62499,"source":{"system":"sec-edgar","filing":"0001225208-24-002674","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520824002674/doc4.xml","form_type":"4"}},{"id":1640725,"issuer":{"id":5058,"kind":"organization","name":"Koppers Holdings Inc.","symbol":"KOP"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-02-15T21:33:47.000Z","date":"2024-02-14","kind":"grant","planned":false,"acquired":true,"shares":460,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"The reporting person was awarded time-based restricted stock units."}],"balance_after":460,"source":{"system":"sec-edgar","filing":"0000950170-24-015945","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1315257/000095017024015945/ownership.xml","form_type":"4"}},{"id":1861575,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO and President","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2023-06-09T18:37:10.000Z","date":"2023-06-09","kind":"sale","planned":false,"acquired":false,"shares":2500,"price":149,"value":372500.0,"ownership":{"direct":true},"balance_after":37047,"source":{"system":"sec-edgar","filing":"0001225208-23-006674","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520823006674/doc4.xml","form_type":"4"}},{"id":1865858,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO and President","other_text":"Chairman"}}],"security":"Common Stock, no par value","published_at":"2023-06-06T15:05:08.000Z","date":"2023-06-02","kind":"sale","planned":false,"acquired":false,"shares":12500,"price":142.7288,"value":1784110.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. 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The reporting person undertakes to provide to MSA Safety, Inc., any security holder of MSA Safety, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote."}],"balance_after":39547,"source":{"system":"sec-edgar","filing":"0001225208-23-006592","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/66570/000122520823006592/doc4.xml","form_type":"4"}},{"id":1960234,"issuer":{"id":3692,"kind":"organization","name":"MSA Safety Inc","symbol":"MSA"},"owners":[{"id":24882,"kind":"person","name":"Vartanian Nishan J.","position":1,"cik":"0001564614","reported_name":"Vartanian Nishan J.","relationship":{"director":true,"officer":true,"other":true,"officer_title":"CEO and President","other_text":"Chairman"}}],"security":"Common Stock, no par 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