Kirby Corp (KEX) VP Miller converts 2,010 RSUs, now holds 3,461 shares

Rhea-AI Filing Summary

Kirby Corp VP and CIO Scott P. Miller reported routine equity compensation activity involving company common stock. On January 24, 2026, 2,010 restricted stock units were converted into an equal number of Kirby common shares at a stated price of $0 per unit, reflecting that these were previously granted awards rather than a market purchase. Following this, Miller directly held 4,010 shares of common stock.

On the same date, a separate transaction coded "F" shows 549 common shares disposed of at $128.7 per share. After this disposition, Miller directly owned 3,461 Kirby common shares. The footnotes clarify that each restricted stock unit represents a contingent right to receive cash or one share of Kirby common stock and that these units were part of a grant made on January 29, 2021 that 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

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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^*

MILLER SCOTT P

(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 - CIO

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		2,010	A	$0(1)	4,010	D
Common Stock, par value $0.10 per share	01/24/2026		F		549	D	$128.7	3,461	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			2,010	(2)	(2)	Common Stock	2,010	$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.
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FAQ

What insider transaction did Kirby Corp (KEX) VP Scott P. Miller report?

Scott P. Miller, Kirby Corp's VP and CIO, reported the conversion of 2,010 restricted stock units into Kirby common stock on January 24, 2026, along with a related disposition of common shares on the same date.

How many Kirby Corp shares does Scott P. Miller own after this Form 4?

After the reported transactions on January 24, 2026, Scott P. Miller directly owns 3,461 shares of Kirby Corp common stock.

What happened to Scott P. Miller’s restricted stock units at Kirby Corp?

2,010 restricted stock units granted on January 29, 2021 vested and were converted into 2,010 Kirby common shares on January 24, 2026, at a stated price of $0 per unit.

What is the meaning of the transaction coded "F" in Scott P. Miller’s Form 4 for KEX?

The transaction coded "F" on January 24, 2026 reflects the disposition of 549 Kirby common shares at a price of $128.7 per share, reducing Miller’s direct holdings from 4,010 to 3,461 shares.

How do the Kirby Corp restricted stock units for Scott P. Miller vest?

The restricted stock units granted on January 29, 2021 vest in five equal annual installments beginning on January 24, 2022. On each vesting date, Kirby may deliver either cash or common shares to Miller.

Are Scott P. Miller’s Kirby Corp shares held directly or indirectly?

The Form 4 shows that after the transactions on January 24, 2026, all 3,461 shares of Kirby Corp common stock are held with direct (D) ownership by Scott P. Miller.