Kirby CEO Grzebinski sells 18,310 shares

Individual sale prices ranged from $140.12 to $143.05 per share around the reported $141.32 weighted average.

Available on EDGAR 11/04/2026 - 11:23 AM EST Accepted by SEC EDGAR 11/04/2026 - 11:22 AM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Kirby Corp. (KEX) CEO David W. Grzebinski sold 18,310 shares of common stock on November 2, 2026, at a weighted average price of $141.32 per share. Sales ranged from $140.12 to $143.05 per share. He directly held 79,931 shares after the sale. No Rule 10b5-1 plan is reported.

Insider Trade Summary

Net Seller: 18,310 shares

Net Sell 1 txn

Insider Grzebinski David W

Role CEO

Sold 18,310 shs ($2.59M)

Share of Position Sold 18.6%

Type	Security	Shares	Price	Value
Sale	Common Stock, par value $0.10 per share F1	18,310	$141.32	$2.59M

Holdings After Transaction: Common Stock, par value $0.10 per share — 79,931 shares (Direct)

Holdings Before and After: Common Stock, par value $0.10 per share, 98,241 to 79,931 shares (Direct)

Footnotes (1)

1. F1. The reported price is the weighted average sales price. The sales were at prices ranging from $140.12 to $143.05 per share. The reporting person will provide, upon request by the commission staff, full information regarding the number of shares sold at each separate price.

Key Figures

Shares sold: 18,310 shares Weighted average sale price: $141.32 per share Lowest reported sale price: $140.12 per share +2 more

5 metrics

Shares sold 18,310 shares November 2, 2026

Weighted average sale price $141.32 per share November 2, 2026

Lowest reported sale price $140.12 per share Sales on November 2, 2026

Highest reported sale price $143.05 per share Sales on November 2, 2026

Direct shares following transaction 79,931 shares After the sale on November 2, 2026

Key Terms

weighted average sales price, par value, Rule 10b5-1 plan

3 terms

weighted average sales price financial

"The reported price is the weighted average sales price."

par value financial

"Common Stock, par value $0.10 per share"

Par value is the fixed amount printed on a bond or stock that represents its original value when issued. It’s like the face value of a coin or bill—what the issuer promises to pay back or the starting price of a stock—though it often doesn’t change with market prices. It matters because it helps determine certain financial details, like how much the company will pay back at maturity.

Rule 10b5-1 plan regulatory

"No Rule 10b5-1 plan is reported."

A Rule 10b5-1 plan is a prearranged, written schedule that lets corporate insiders buy or sell company stock at set times or amounts, even if they later learn material nonpublic information. Think of it like setting an automatic thermostat for trades: it creates a clear record that trades were planned in advance, reducing the risk of insider-trading accusations and helping investors trust that insider transactions are routine rather than based on secret information.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many KEX shares did CEO David W. Grzebinski sell?

David W. Grzebinski sold 18,310 shares on November 2, 2026, at a weighted average price of $141.32 per share. Individual sales ranged from $140.12 to $143.05 per share, and no Rule 10b5-1 plan is reported.

How many KEX shares did David W. Grzebinski hold after the sale?

David W. Grzebinski held 79,931 shares directly after the November 2, 2026 sale.

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

Form 4 Insider Transactions: What Each Field Means →

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SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Grzebinski David W

(Last) (First) (Middle)

55 WAUGH DRIVE

SUITE 1000

(Street)

HOUSTON TEXAS 77007

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
KIRBY CORP [ KEX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
11/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock, par value $0.10 per share	11/02/2026		S		18,310	D	$141.32(1)	79,931	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The reported price is the weighted average sales price. The sales were at prices ranging from $140.12 to $143.05 per share. The reporting person will provide, upon request by the commission staff, full information regarding the number of shares sold at each separate price.

	Ronald A. Dragg, Agent and Attorney-in-Fact	11/04/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)