X0306 4 2018-05-17 false 0000728535 HUNT J B TRANSPORT SERVICES INC JBHT 0001190241 GARRISON EARL WAYNE 615 J.B. HUNT CORPORATE DRIVE LOWELL AR 72745 true false false false Common Stock 2018-05-17 4 S false 63439.00 126.1683 D 1806561.00 D Common Stock 2018-05-17 4 S false 6561.00 126.7059 D 1800000.00 D Common Stock 2018-05-17 4 S false 22637.00 126.1036 D 1777363.00 D Common Stock 2018-05-17 4 S false 7363.00 126.5212 D 1770000.00 D Common Stock 45000.00 I Spouse/daughter This transaction was executed in multiple trades at prices ranging from $125.59 to $126.58. 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. This transaction was executed in multiple trades at prices ranging from $126.59 to $126.92. 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. This transaction was executed in multiple trades at prices ranging from $125.50 to $126.49. 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. This transaction was executed in multiple trades at prices ranging from $126.50 to $126.62. 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. /s/ Rae Millerd, attorney-in-fact 2018-05-17