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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":693969,"source":{"system":"sec-edgar","filing":"0001562180-20-005235","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005235/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073794,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:52:24.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":4574,"price":136.6478,"value":625027.0372,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":694053,"source":{"system":"sec-edgar","filing":"0001562180-20-005235","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005235/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073793,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:52:24.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":19100,"price":135.5536,"value":2589073.76,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $135.29 to $136.28. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":698627,"source":{"system":"sec-edgar","filing":"0001562180-20-005235","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005235/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073792,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:52:24.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":15060,"price":134.6095,"value":2027219.07,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":717727,"source":{"system":"sec-edgar","filing":"0001562180-20-005235","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005235/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073791,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:48:37.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":84,"price":137.35,"value":11537.4,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F6","text":"This transaction was executed in multiple trades at prices ranging from $137.33 to $137.37. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":693969,"source":{"system":"sec-edgar","filing":"0001562180-20-005234","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005234/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073790,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:48:37.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":4574,"price":136.6478,"value":625027.0372,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":694053,"source":{"system":"sec-edgar","filing":"0001562180-20-005234","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005234/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073789,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:48:37.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":19100,"price":135.5536,"value":2589073.76,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":698627,"source":{"system":"sec-edgar","filing":"0001562180-20-005234","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005234/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073788,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:48:37.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":15060,"price":134.6095,"value":2027219.07,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"This transaction was executed in multiple trades at prices ranging from $134.25 to $135.18. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":717727,"source":{"system":"sec-edgar","filing":"0001562180-20-005234","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005234/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-21"}},{"id":3073787,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:23:54.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":4326,"price":135.6556,"value":586846.1256,"ownership":{"direct":false,"nature":"Cl George & Sons Ltd. P/S"},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $135.50 to $135.95. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":338258,"source":{"system":"sec-edgar","filing":"0001562180-20-005232","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005232/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-20"}},{"id":3073786,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-30T22:23:54.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":8997,"price":135.0703,"value":1215227.4891,"ownership":{"direct":false,"nature":"Cl George & Sons Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"This amendment is being filed to correct the number of shares attributable to the reporting person which were incorrectly reported in the original Form 4."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":342584,"source":{"system":"sec-edgar","filing":"0001562180-20-005232","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005232/primarydocument.xml","form_type":"4/A","original_submission_date":"2020-07-20"}},{"id":3079263,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-21T19:46:05.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":200,"price":137.35,"value":27470.0,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"This transaction was executed in multiple trades at prices ranging from $137.33 to $137.37. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":640407,"source":{"system":"sec-edgar","filing":"0001562180-20-005196","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005196/primarydocument.xml","form_type":"4"}},{"id":3079262,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-21T19:46:05.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":10884,"price":136.6478,"value":1487274.6552,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"This transaction was executed in multiple trades at prices ranging from $136.29 to $137.175. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":640607,"source":{"system":"sec-edgar","filing":"0001562180-20-005196","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005196/primarydocument.xml","form_type":"4"}},{"id":3079261,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-21T19:46:05.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":45455,"price":135.5536,"value":6161588.888,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. P/S"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $135.29 to $136.28. The price reported above reflects the weighted average price. 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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":651491,"source":{"system":"sec-edgar","filing":"0001562180-20-005196","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005196/primarydocument.xml","form_type":"4"}},{"id":3079260,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-21T19:46:05.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":35841,"price":134.6095,"value":4824539.0895,"ownership":{"direct":false,"nature":"Gene/Mary Frances George Ltd. 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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."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"The reporting person disclaims beneficial ownership of these securities, and this report shall not be deemed an admission that the reporting person is the beneficial owner of such securities for purposes of Section 16 or for any other purpose."}],"balance_after":696946,"source":{"system":"sec-edgar","filing":"0001562180-20-005196","document":"primarydocument.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/728535/000156218020005196/primarydocument.xml","form_type":"4"}},{"id":3079865,"issuer":{"id":3196,"kind":"organization","name":"HUNT J B TRANSPORT SERVICES INC"},"owners":[{"id":120955,"kind":"person","name":"George Gary Charles","position":1,"cik":"0001374188","reported_name":"George Gary Charles","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2020-07-20T18:38:55.000Z","date":"2020-07-20","kind":"sale","acquired":false,"shares":18182,"price":135.6556,"value":2466490.1192,"ownership":{"direct":false,"nature":"Cl George & Sons Ltd. P/S"},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"This transaction was executed in multiple trades at prices ranging from $135.50 to $135.95. The price reported above reflects the weighted average price. 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