Kirby CEO exercises options, sells 34,152 shares

Kirby Corp CEO David W. Grzebinski exercised stock options and sold shares on the same day.

Rhea-AI Filing Summary

Kirby Corp CEO David W. Grzebinski exercised stock options and sold shares on the same day. He exercised 34,152 employee stock options, converting them into 34,152 shares of common stock at an exercise price of $73.29 per share. He then sold 34,152 common shares in open-market transactions at a weighted average price of $130.05 per share, with individual sale prices ranging from $130.00 to $130.36 per share. After these transactions, he directly owned 98,241 shares of Kirby common stock.

Insider Trade Summary

Exercise and sale activity reported; no spread calculated

Exercise and Sale 3 txns

Insider Grzebinski David W

Role CEO

Sold 34,152 shs ($4.44M)

Approx. gross sale proceeds $4.44M

Approx. exercise cost $2.50M

Type	Security	Shares	Price	Value
Exercise	Employee Stock Options (Right to Buy)	34,152	$0.00	$0.00
Exercise	Common Stock, par value $0.10 per share	34,152	$73.29	$2.50M
Sale	Common Stock, par value $0.10 per share	34,152	$130.05	$4.44M

Holdings After Transaction: Employee Stock Options (Right to Buy) — 0 contracts (Direct); Common Stock, par value $0.10 per share — 98,241 shares (Direct)

Footnotes (1)

1. F1. The reported price is the weighted average sales price. The sales were at prices ranging from $130.00 to $130.36 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.

FAQ

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

What did Kirby (KEX) CEO David W. Grzebinski report in this Form 4?

David W. Grzebinski reported exercising employee stock options and selling common shares. He exercised 34,152 options into 34,152 Kirby common shares, then sold 34,152 shares in open-market transactions on the same date, as disclosed in the Form 4.

How many Kirby (KEX) shares did the CEO sell and at what prices?

He sold 34,152 Kirby common shares. The weighted average sale price was $130.05 per share, with individual trades executed between $130.00 and $130.36 per share, according to the transaction footnote in the filing.

What options did the Kirby (KEX) CEO exercise in this transaction?

He exercised 34,152 employee stock options, described as rights to buy Kirby common stock. These options were converted into 34,152 shares of common stock at an exercise price of $73.29 per share before the reported share sales occurred.

How many Kirby (KEX) shares does the CEO own after these transactions?

After completing the option exercise and subsequent share sales, David W. Grzebinski directly owns 98,241 shares of Kirby common stock. This figure reflects his direct ownership immediately following the reported Form 4 transactions on the stated date.

Were the Kirby (KEX) CEO’s transactions direct or through an intermediary entity?

The transactions were reported as direct ownership. The Form 4 classifies the holdings and trades under direct ownership, and there is no indication in the provided footnotes of an intermediary trust, partnership, or other entity holding the shares.

What does the weighted average price disclosure mean in the Kirby (KEX) Form 4?

The weighted average price of $130.05 per share reflects multiple sales at slightly different prices. The filing notes that sales occurred between $130.00 and $130.36 per share and that detailed trade breakdowns are available from the reporting person upon request.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 02/26/2026 - 10:52 AM EST Learn about SEC filing dates

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 TX 77007

(City) (State) (Zip)

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

3. Date of Earliest Transaction (Month/Day/Year)
02/24/2026

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

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

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

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	02/24/2026		M		34,152	A	$73.29	132,393	D
Common Stock, par value $0.10 per share	02/24/2026		S		34,152	D	$130.05(1)	98,241	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
Employee Stock Options (Right to Buy)	$73.29	02/24/2026		M			34,152	01/31/2023	01/31/2027	Common Stock	34,152	$0	0	D

Explanation of Responses:

1. The reported price is the weighted average sales price. The sales were at prices ranging from $130.00 to $130.36 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	02/26/2026
	** 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.