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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":2399,"source":{"system":"sec-edgar","filing":"0001127602-20-023220","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220023220/form4.xml","form_type":"4"}},{"id":3063775,"issuer":{"id":3398,"kind":"organization","name":"CHARLES RIVER LABORATORIES INTERNATIONAL, INC.","symbol":"CRL"},"owners":[{"id":25131,"kind":"person","name":"Knell Michael Gunnar","position":1,"cik":"0001543779","reported_name":"Knell Michael Gunnar","relationship":{"officer":true,"officer_title":"CSVP&Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2020-08-10T19:20:01.000Z","date":"2020-08-07","kind":"sale","acquired":false,"shares":2793,"price":216.5169,"value":604731.7017,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"This transaction was executed in multiple trades at prices ranging from $215.87 to $216.83. 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The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the number of shares and prices at which the transaction was effected."}],"balance_after":3062,"source":{"system":"sec-edgar","filing":"0001127602-20-023220","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220023220/form4.xml","form_type":"4"}},{"id":3063774,"issuer":{"id":3398,"kind":"organization","name":"CHARLES RIVER LABORATORIES INTERNATIONAL, INC.","symbol":"CRL"},"owners":[{"id":25131,"kind":"person","name":"Knell Michael Gunnar","position":1,"cik":"0001543779","reported_name":"Knell Michael Gunnar","relationship":{"officer":true,"officer_title":"CSVP&Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2020-08-10T19:20:01.000Z","date":"2020-08-07","kind":"exercise","acquired":true,"shares":735,"price":144.67,"value":106332.45,"ownership":{"direct":true},"balance_after":5855,"source":{"system":"sec-edgar","filing":"0001127602-20-023220","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220023220/form4.xml","form_type":"4"}},{"id":3063773,"issuer":{"id":3398,"kind":"organization","name":"CHARLES RIVER LABORATORIES INTERNATIONAL, INC.","symbol":"CRL"},"owners":[{"id":25131,"kind":"person","name":"Knell Michael Gunnar","position":1,"cik":"0001543779","reported_name":"Knell Michael Gunnar","relationship":{"officer":true,"officer_title":"CSVP&Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2020-08-10T19:20:01.000Z","date":"2020-08-07","kind":"exercise","acquired":true,"shares":1709,"price":109.34,"value":186862.06,"ownership":{"direct":true},"balance_after":5120,"source":{"system":"sec-edgar","filing":"0001127602-20-023220","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220023220/form4.xml","form_type":"4"}},{"id":3063772,"issuer":{"id":3398,"kind":"organization","name":"CHARLES RIVER LABORATORIES INTERNATIONAL, INC.","symbol":"CRL"},"owners":[{"id":25131,"kind":"person","name":"Knell Michael Gunnar","position":1,"cik":"0001543779","reported_name":"Knell Michael Gunnar","relationship":{"officer":true,"officer_title":"CSVP&Chief Accounting Officer"}}],"security":"Common Stock","published_at":"2020-08-10T19:20:01.000Z","date":"2020-08-07","kind":"exercise","acquired":true,"shares":997,"price":90.43,"value":90158.71,"ownership":{"direct":true},"balance_after":3411,"source":{"system":"sec-edgar","filing":"0001127602-20-023220","document":"form4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220023220/form4.xml","form_type":"4"}},{"id":3127566,"issuer":{"id":3398,"kind":"organization","name":"CHARLES RIVER LABORATORIES INTERNATIONAL, INC.","symbol":"CRL"},"owners":[{"id":25131,"kind":"person","name":"Knell Michael Gunnar","position":1,"cik":"0001543779","reported_name":"Knell Michael Gunnar","relationship":{"officer":true,"officer_title":"CSVP&Chief Accounting Officer"}}],"security":"Stock Options (Right to Buy)","published_at":"2020-06-02T18:15:25.000Z","date":"2020-05-29","kind":"grant","acquired":true,"shares":1616,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Stock Options vest in one-fourth increments on May 29, 2021, 2022, 2023 and 2024."}],"balance_after":1616,"derivative":{"exercise_price":179.66,"exercise_date":"2021-05-29","expiration_date":"2030-05-29","underlying":"Common Stock","underlying_shares":1616},"source":{"system":"sec-edgar","filing":"0001127602-20-018388","document":"form4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1100682/000112760220018388/form4.xml","form_type":"4"}}],"next_cursor":"2020-06-02T18:15:25.000000Z,3127566"}