EX-32 4 kex-20210630ex32.htm EX-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 June 30, 2021 (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: August 5, 2021 |