Attached files

file filename
EX-32.1 - EXHIBIT 32.1 (SECTION 906 CERTIFICATION - DAVID A. JACKSON) - KNIGHT TRANSPORTATION INCexhibit321.htm
EX-31.2 - EXHIBIT 31.2 (SECTION 302 CERTIFICATION - ADAM W. MILLER) - KNIGHT TRANSPORTATION INCexhibit312.htm
EX-31.1 - EXHIBIT 31.1 (SECTION 302 CERTIFICATION - DAVID A. JACKSON) - KNIGHT TRANSPORTATION INCexhibit311.htm
10-Q - FORM 10-Q (FIRST QUARTER 2017) - KNIGHT TRANSPORTATION INCform10q.htm

Exhibit 32.2

CERTIFICATION PURSUANT TO
18 U.S.C. SECTION 1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Quarterly Report of Knight Transportation, Inc. (the "Company") on Form 10-Q for the quarterly period ended March 31, 2017, as filed with the Securities and Exchange Commission on the date hereof (the "Report"), I, Adam W. Miller, Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to the best of my knowledge:

(1)
The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934; and

(2)
The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company.

May 10, 2017
By:
/s/ Adam W. Miller 
   
Adam W. Miller
   
Chief Financial Officer

A signed original of this written statement required by Section 906 has been provided to Knight Transportation, Inc. and will be retained by Knight Transportation, Inc. and furnished to the Securities and Exchange Commission or its staff upon request.