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[Form 4] KIRBY CORP Insider Trading Activity

Filing Impact
(Very High)
Filing Sentiment
(Negative)
Form Type
4

Rhea-AI Filing Summary

Kirby Corp CEO David W. Grzebinski, who is also a director, reported multiple equity transactions dated February 3, 2026. He acquired 22,470 shares of Kirby common stock at a price of $0 through the exercise of restricted stock units, bringing his directly held common shares to 107,085 before a subsequent disposition.

On the same date, he disposed of 8,844 common shares at $120.68 per share, leaving 98,241 common shares held directly afterward. Several blocks of restricted stock units granted between 2022 and 2025 partially vested, each unit representing a contingent right to receive cash or one Kirby common share, with remaining units continuing to vest in equal annual installments on future February 3 dates.

Positive

  • None.

Negative

  • None.
Insider Grzebinski David W
Role CEO
Type Security Shares Price Value
Exercise Restricted Stock Units 6,820 $0.00 --
Exercise Restricted Stock Units 6,572 $0.00 --
Exercise Restricted Stock Units 4,955 $0.00 --
Exercise Restricted Stock Units 4,123 $0.00 --
Exercise Common Stock, par value $0.10 per share 22,470 $0.00 --
Tax Withholding Common Stock, par value $0.10 per share 8,844 $120.68 $1.07M
Holdings After Transaction: Restricted Stock Units — 6,820 shares (Direct); Common Stock, par value $0.10 per share — 107,085 shares (Direct)
Footnotes (1)
  1. Each restricted stock unit represents a contingent right to receive cash or one share of common stock of the issuer. These restricted stock units granted on January 28, 2022, vest in five equal annual installments beginning on February 3, 2023. 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. These restricted stock units granted on February 1, 2023, vest in five equal annual installments beginning on February 3, 2024. 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. These restricted stock units granted on February 2, 2024, vest in five equal annual installments beginning on February 3, 2025. 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. These restricted stock units granted on January 31, 2025, vest in five equal annual installments beginning on February 3, 2026. 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.
Form 4 Insider Transactions: What Each Field Means →
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)
02/03/2026
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 02/03/2026 M 22,470 A $0(1) 107,085 D
Common Stock, par value $0.10 per share 02/03/2026 F 8,844 D $120.68 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
Restricted Stock Units (1) 02/03/2026 M 6,820 (2) (2) Common Stock 6,820 $0 6,820 D
Restricted Stock Units (1) 02/03/2026 M 6,572 (3) (3) Common Stock 6,572 $0 13,144 D
Restricted Stock Units (1) 02/03/2026 M 4,955 (4) (4) Common Stock 4,955 $0 14,865 D
Restricted Stock Units (1) 02/03/2026 M 4,123 (5) (5) Common Stock 4,123 $0 16,492 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 28, 2022, vest in five equal annual installments beginning on February 3, 2023. 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.
3. These restricted stock units granted on February 1, 2023, vest in five equal annual installments beginning on February 3, 2024. 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.
4. These restricted stock units granted on February 2, 2024, vest in five equal annual installments beginning on February 3, 2025. 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.
5. These restricted stock units granted on January 31, 2025, vest in five equal annual installments beginning on February 3, 2026. 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 02/05/2026
** 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.

Source: View Original Filing on SEC EDGAR