Kirby (NYSE: KEX) boosts buyback, 8,848,942 shares authorized

Rhea-AI Filing Summary

Kirby Corporation’s board authorized the repurchase of up to an additional 8,000,000 shares of its common stock under its existing share repurchase authorization. As of September 5, 2025, the company had already repurchased 4,151,058 shares, and after the new approval, a total of 8,848,942 shares remained authorized for future repurchase.

Repurchases may occur from time to time in the open market or through privately negotiated and block transactions, including through Rule 10b5-1 trading plans and in accordance with Rule 10b-18. The program is open-ended, does not obligate Kirby to repurchase any particular amount of stock, and may be suspended, modified, or discontinued depending on cash generation, investment needs, debt repayment, stock price, market conditions, and other factors.

Positive

• Expanded buyback capacity: The board approved repurchases of up to an additional 8,000,000 shares, leaving 8,848,942 shares authorized for potential future repurchases, which can support shareholder returns if executed.

Negative

• None.

Insights

Equity capital allocation analyst

Kirby expands an open-ended share repurchase program with significant remaining capacity.

Kirby Corporation’s board authorized up to an additional 8,000,000 common shares for repurchase, bringing the remaining authorization to 8,848,942 shares as of September 5, 2025. This indicates a continued willingness to return capital to shareholders through buybacks when management views conditions as appropriate.

The authorization is explicitly discretionary: it may be used via open-market purchases, privately negotiated deals, block trades, or Rule 10b5-1 plans, all subject to Rule 10b-18. Actual impact on share count will depend on future decisions influenced by operating cash flow, business investment, potential debt repayment, the prevailing share price, and market conditions.

The authorization has an open-ended term and can be suspended, modified, or discontinued at any time. Future company disclosures will show the pace and scale of repurchases executed under this expanded capacity.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the

Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): September 8, 2025

KIRBY CORPORATION

(Exact name of registrant as specified in its charter)

Nevada			1-7615	74-1884980
(State or Other Jurisdiction of Incorporation)			(Commission File Number)	(IRS Employer Identification No.)
55 Waugh Drive, Suite 1000
Houston, Texas				77007
(Address of Principal Executive Offices)				(Zip Code)

Registrant’s telephone number, including area code: 713-435-1000

Not Applicable

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	KEX	New York Stock Exchange

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

On September 8, 2025, the Board of Directors of Kirby Corporation (the “Company”) authorized the repurchase of up to an additional 8,000,000 shares of the Company’s common stock under the Company’s existing share repurchase authorization (the “Repurchase Authorization”). As of September 5, 2025, 4,151,058 shares had been purchased under the Repurchase Authorization and with the new authorization, 8,848,942 shares remained authorized for repurchase. Purchases under the Repurchase Authorization may be made from time to time in the open market, through privately negotiated transactions, block transactions or by other means, including Rule 10b5-1 trading plans, in accordance with applicable securities laws and regulations, including Rule 10b-18 under Securities Exchange Act of 1934, as determined by the Company. The Repurchase Authorization does not obligate the Company to acquire any particular amount of common stock. Future repurchases, if any, will depend on factors such as levels of cash generation from operations, cash requirements for investment in the Company’s business, repayment of future debt, if any, then current stock price, market conditions, securities law limitations and other factors. The Repurchase Authorization may be suspended, modified or discontinued at any time, but the authorization is of an open-ended term.

Item 9.01. Financial Statements and Exhibits

(d)Exhibits

EXHIBIT INDEX

Exhibit Number		Description of Exhibit
99.1		Press release dated September 8, 2025
104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

			KIRBY CORPORATION
Date:	September 8, 2025	By:	/s/ Raj Kumar
			Raj Kumar Executive Vice President and Chief Financial Officer

FAQ

What did Kirby Corporation (KEX) announce regarding share repurchases?

Kirby Corporation’s board authorized the repurchase of up to an additional 8,000,000 shares of its common stock under the existing share repurchase authorization.

How many Kirby (KEX) shares remain authorized for repurchase after this action?

After the new authorization, a total of 8,848,942 shares of Kirby’s common stock remained authorized for repurchase as of September 5, 2025.

How many Kirby shares had already been repurchased under the program?

As of September 5, 2025, Kirby had repurchased 4,151,058 shares of its common stock under the existing share repurchase authorization.

How can Kirby (KEX) execute its share repurchase authorization?

Kirby may repurchase shares from time to time in the open market, through privately negotiated transactions, block transactions, or by other means, including Rule 10b5-1 trading plans, in accordance with Rule 10b-18 and other applicable securities laws.

Is Kirby required to repurchase all 8,848,942 authorized shares?

No. The repurchase authorization does not obligate Kirby to acquire any particular amount of common stock; it simply permits repurchases up to the authorized amount.

What factors will influence Kirby’s future share repurchases?

Future repurchases will depend on cash generation from operations, cash requirements for business investment, potential debt repayment, the then current stock price, market conditions, securities law limitations, and other factors.

Can Kirby modify or end its share repurchase program?

Yes. The repurchase authorization has an open-ended term and may be suspended, modified, or discontinued at any time.