Kirby officer proposes $2.59M common-share sale

The notice lists November 2, 2026, as the approximate sale date and Merrill Lynch as the broker.

Available on EDGAR 11/02/2026 - 04:49 PM EST Accepted by SEC EDGAR 11/02/2026 - 04:48 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Kirby Corporation officer David Grzebinski reported a proposed sale of 18,310 common shares, with an aggregate market value of $2,587,493.99. Merrill Lynch is listed as broker, and November 2, 2026, is the approximate sale date.

The securities schedule lists stock bonuses from Kirby Corporation of 11,913 shares dated January 24, 2025, and 18,347 shares dated February 3, 2025.

Key Figures

Common shares proposed for sale: 18,310 shares Aggregate market value: $2,587,493.99 Shares outstanding: 52,800,000 shares +2 more

5 metrics

Common shares proposed for sale 18,310 shares Proposed sale by David Grzebinski

Aggregate market value $2,587,493.99 Proposed sale

Shares outstanding 52,800,000 shares Listed in the securities information

Stock bonus shares 11,913 shares Dated January 24, 2025

Stock bonus shares 18,347 shares Dated February 3, 2025

Key Terms

Rule 144, Stock Bonus, Compensatory Payment

3 terms

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Stock Bonus financial

"Stock Bonus"

Compensatory Payment financial

"Compensatory Payment"

FAQ

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How many KEX shares does David Grzebinski propose to sell?

David Grzebinski, identified as an officer of Kirby Corporation, reported a proposed sale of 18,310 common shares, with an aggregate market value of $2,587,493.99.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001483620
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Kirby Corporation
SEC File Number
Address of Issuer	55 Waugh Drive, Suite 1000 Houston TEXAS 77007
Phone	713-435-1135
Name of Person for Whose Account the Securities are To Be Sold	David Grzebinski
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	OFFICER

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common Stock	Merrill Lynch 800 Capitol Street Suite 1900 Houston TX 77002	18310	2587493.99	52800000	11/02/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common Stock	01/24/2025	Stock Bonus	Kirby Corporation			11913	01/24/2025	Compensatory Payment
Common Stock	02/03/2025	Stock Bonus	Kirby Corporation			18347	02/03/2025	Compensatory Payment

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	11/02/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	David Grzebinski
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)