[Form 4] KIRBY CORP Insider Trading Activity

Rhea-AI Filing Summary

Kirby Corporation executive William Matthew Woodruff, VP of Public and Government Affairs, reported routine equity compensation activity. On January 24, 2026, 394 restricted stock units vested and were converted into 394 shares of Kirby common stock at $0 per share, increasing his direct holdings.

On the same date, 167 shares of common stock were disposed of at $128.7 per share, and Woodruff’s directly held common stock position stood at 2,053 shares after these transactions. The footnotes explain that each restricted stock unit is a contingent right to receive cash or one share of common stock, and that the units reported here come from a grant made on January 29, 2021 which vests in five equal annual installments beginning January 24, 2022.

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^*

Woodruff William Matthew

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP of Public and Govt Affairs

3. Date of Earliest Transaction (Month/Day/Year)
01/24/2026

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	01/24/2026		M		394	A	$0(1)	2,220	D
Common Stock, par value $0.10 per share	01/24/2026		F		167	D	$128.7	2,053	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
Restricted Stock Units	(1)	01/24/2026		M			394	(2)	(2)	Common Stock	394	$0	0	D

Explanation of Responses:

1. Each restricted stock unit represents a contingent right to receive cash or one share of common stock of the issuer.

2. These restricted stock units granted on January 29, 2021, vest in five equal annual installments beginning on January 24, 2022. Cash or shares of common stock of the issuer, at the election of the issuer, will be delivered to the reporting person on or as soon as practicable on each vesting date.

	Ronald A. Dragg, Agent and Attorney-in-Fact	01/27/2026
	** 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.

FAQ

What insider activity did Kirby (KEX) report for William Matthew Woodruff?

The filing shows that William Matthew Woodruff, Kirby’s VP of Public and Government Affairs, had 394 restricted stock units vest and convert into 394 shares of common stock at $0 per share, and 167 shares of common stock were disposed of at $128.7 per share on January 24, 2026.

How many Kirby (KEX) shares does William Matthew Woodruff hold after this Form 4?

After the reported transactions on January 24, 2026, William Matthew Woodruff directly beneficially owns 2,053 shares of Kirby common stock.

What restricted stock units were involved in the Kirby (KEX) Form 4 for Woodruff?

The Form 4 reports 394 restricted stock units that were converted into common stock. According to the footnotes, these units were from an award granted on January 29, 2021, and each unit represents a contingent right to receive cash or one share of Kirby common stock.

What is the vesting schedule for William Matthew Woodruff’s 2021 Kirby (KEX) RSU grant?

The restricted stock units granted on January 29, 2021 to William Matthew Woodruff vest in five equal annual installments beginning on January 24, 2022. Cash or shares of common stock, at Kirby’s election, are delivered on or as soon as practicable on each vesting date.

At what price were Kirby (KEX) shares disposed of in Woodruff’s Form 4?

The Form 4 shows that 167 shares of Kirby common stock were disposed of at a price of $128.7 per share on January 24, 2026.

What is William Matthew Woodruff’s role at Kirby (KEX) as shown in the Form 4?

The Form 4 identifies William Matthew Woodruff as an officer of Kirby Corporation, serving as VP of Public and Govt Affairs, and not as a director or 10% owner.