EX-32 6 ex_32.htm EXHIBIT 32

Exhibit 32
Certification Pursuant to Section 18 U.S.C. Section 1350
In connection with the filing of the Quarterly Report on Form 10-Q for the quarter ended March 31, 2018 (the “Report”) by Kirby Corporation (the “Company”), each of the undersigned hereby certifies that:

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

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

| /S/ DAVID W. GRZEBINSKI
| David W. Grzebinski
| President and Chief Executive Officer
| /S/ WILLIAM G. HARVEY
| William G. Harvey
| Executive Vice President and
| Chief Financial Officer

Dated: May 4, 2018