# EDGAR Filing Document

**Accession Number:** 0000056047
**File Stem:** 0001193125-23-067623
**Filing Date:** 2023-3
**Character Count:** 6542
**Document Hash:** 8ba494d972121b9117909e4907f37508
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-23-067623.hdr.sgml**: 20230310

**ACCESSION NUMBER**: 0001193125-23-067623

**CONFORMED SUBMISSION TYPE**: DEFA14A

**PUBLIC DOCUMENT COUNT**: 8

**FILED AS OF DATE**: 20230310

**DATE AS OF CHANGE**: 20230310

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** KIRBY CORP
- **CENTRAL INDEX KEY:** 0000056047
- **STANDARD INDUSTRIAL CLASSIFICATION:** WATER TRANSPORTATION [4400]
- **IRS NUMBER:** 741884980
- **STATE OF INCORPORATION:** NV
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** DEFA14A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-07615
- **FILM NUMBER:** 23723927

**BUSINESS ADDRESS:**
- **STREET 1:** 55 WAUGH DRIVE SUITE 1000
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77007
- **BUSINESS PHONE:** 7134351000

**MAIL ADDRESS:**
- **STREET 1:** P.O. BOX 1745
- **CITY:** HOUSTON
- **STATE:** TX
- **ZIP:** 77251

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** KIRBY EXPLORATION CO INC
- **DATE OF NAME CHANGE:** 19900510

##### [**Table of Contents**](#toc)

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**UNITED STATES** 

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549** 

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**SCHEDULE 14A** 

**Proxy Statement Pursuant to Section 14(a) of the** 

**Securities Exchange Act of 1934** 

**(Amendment No.)** 

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Filed by the Registrant ☒ Filed by a Party other than the Registrant ☐

Check the appropriate box:

☐ Preliminary Proxy Statement

☐ **Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))**

☐ Definitive Proxy Statement

☒ Definitive Additional Materials

☐ Soliciting Material Under §240.14a-12

## Kirby Corporation
**(Name of Registrant as Specified in its Charter)** 

**(Name of Person(s) Filing Proxy Statement, if other than the Registrant)** 

Payment of Filing Fee (Check all boxes that apply):

☒ No fee required

☐ Fee paid previously with preliminary materials

☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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##### [**Table of Contents**](#toc)

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| | |
|:---|:---|
| <br> ![LOGO](g377851dsp001.jpg) <br>P.O. BOX 8016, CARY, NC 27512-9903 | **Kirby Corporation**<br> **Important Notice Regarding the Availability**<br> **of Proxy Materials for the**<br> **Stockholders Meeting to be held on**<br> **April 25, 2023**<br> **For Stockholders of record as of March 1, 2023**<br>|
|  | **This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting.**<br>**To view the proxy materials, including the Notice of 2023 Annual Meeting, Proxy Statement, and the Company's Annual Report, which includes the Annual Report on Form 10-K for 2022, and to obtain directions to attend the meeting and vote in person, go to: www.proxydocs.com/KEX**<br>**To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.**<br>Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the internet.<br>![LOGO](g377851dsp001f.jpg)  |

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| | | |
|:---|:---|:---|
| ![LOGO](g377851dsp001a.jpg) | <br> **For a convenient way to view proxy materials and VOTE go to**<br> **www.proxydocs.com/KEX**<br>**Have the 12 digit control number located in the shaded box above available**<br> **when you access the website and follow the instructions.**<br>| ![LOGO](g377851dsp001b.jpg) |
|  | *If you want to receive a paper or e-mail copy of the proxy materials, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year's meeting, you must make this request on or before April 14, 2023.* |  |

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***To order paper materials, use one of the following methods.*** 

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| | | |
|:---|:---|:---|
| &nbsp;&nbsp;&nbsp; ![LOGO](g377851dsp001c.jpg) <br>**INTERNET**<br> **www.investorelections.com/KEX** | <br> ![LOGO](g377851dsp001d.jpg) <br>**TELEPHONE**<br> **(866) 648-8133** | <br> ![LOGO](g377851dsp001e.jpg) <br>**\* E-MAIL<br>paper@investorelections.com** |
| &nbsp;&nbsp;&nbsp; ![LOGO](g377851dsp001c.jpg) <br>**INTERNET**<br> **www.investorelections.com/KEX** | <br> ![LOGO](g377851dsp001d.jpg) <br>**TELEPHONE**<br> **(866) 648-8133** | <br> ![LOGO](g377851dsp001e.jpg) <br>**\* E-MAIL<br>paper@investorelections.com** |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; When requesting via the Internet or telephone you will need the 12 digit control number located in the shaded box above. | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; When requesting via the Internet or telephone you will need the 12 digit control number located in the shaded box above. | \* If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located above) in the subject line. No other requests, instructions OR other inquiries should be included with your e-mail requesting material. |

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| | |
|:---|:---|
| &nbsp;&nbsp;&nbsp; <br> **Kirby Corporation** | &nbsp;&nbsp;&nbsp; <br> **Kirby Corporation** |
| &nbsp;&nbsp;&nbsp;**Meeting Type:** | Annual Meeting of Stockholders |
| &nbsp;&nbsp;&nbsp;**Date:** | Tuesday, April 25, 2023 |
| &nbsp;&nbsp;&nbsp;**Time:** | 10:00 AM, Local Time |
| &nbsp;&nbsp;&nbsp;**Place:** | 55 Waugh Drive, Suite 1100 |
|  | Houston, TX 77007 |
| &nbsp;&nbsp;&nbsp; **SEE REVERSE FOR FULL AGENDA** | &nbsp;&nbsp;&nbsp; **SEE REVERSE FOR FULL AGENDA** |

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##### [**Table of Contents**](#toc)
**Kirby Corporation** 

**Annual Meeting of Stockholders** 

**THE BOARD OF DIRECTORS RECOMMENDS A VOTE:**

**FOR** ON PROPOSALS 1, 2 AND 3

**PROPOSAL** 

1. Election of four Class I Directors

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.01 Richard J. Alario

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.02 Susan W. Dio

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.03 David W. Grzebinski

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1.04 Richard R. Stewart

2. Ratification of the Audit Committee's selection of KPMG LLP as Kirby's independent registered public accounting
firm for 2023

3. Advisory vote on the approval of the compensation of Kirby's named executive officers