UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 10-Q [ X ] QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarter ended June 30, 2004 [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(D) OF THE SECURITIES EXCHANGE ACT OF 1934 COMMISSION FILE NUMBER 1-7615 KIRBY CORPORATION - ------------------------------------------------------------------------------- (Exact name of registrant as specified in its charter) NEVADA 74-1884980 --------------------------------------- --------------------------------- (State or other jurisdiction of (IRS Employer Identification No.) incorporation or organization) 55 WAUGH DRIVE, SUITE 1000, HOUSTON, TX 77007 --------------------------------------- --------------------------------- (Address of principal executive offices) (Zip Code) (713) 435-1000 - ------------------------------------------------------------------------------- (Registrant's telephone number, including area code) No Change - ------------------------------------------------------------------------------- (Former name, former address and former fiscal year, if changed since last report) Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. Yes [ X ] No [ ] Indicate by check mark whether the registrant is an accelerated filer (as defined in Rule 12b-2 of the Act). Yes [ X ] No [ ] The number of shares outstanding of the registrant's Common Stock, $.10 par value per share, on August 5, 2004 was 24,569,000.

PART I FINANCIAL INFORMATION ITEM 1. FINANCIAL STATEMENTS KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES CONDENSED BALANCE SHEETS (UNAUDITED) ASSETS JUNE 30, DECEMBER 31, 2004 2003 --------------- ----------- ($ IN THOUSANDS) Current assets: Cash and cash equivalents $14,334 $4,064 Accounts receivable: Trade - less allowance for doubtful accounts 85,549 80,585 Other 6,111 17,347 Inventory - finished goods 16,331 13,991 Prepaid expenses and other current assets 10,909 13,173 Deferred income taxes 2,553 2,619 ---------- ---------- Total current assets 135,787 131,779 ---------- ---------- Property and equipment 943,340 890,923 Less accumulated depreciation 379,053 354,411 ----------- ---------- 564,287 536,512 ---------- ---------- Investment in marine affiliates 13,469 9,162 Goodwill - net 160,641 156,726 Other assets 17,621 20,782 ---------- ---------- $ 891,805 $ 854,961 ========== ========== See accompanying notes to condensed financial statements. 2

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES CONDENSED BALANCE SHEETS (UNAUDITED) LIABILITIES AND STOCKHOLDERS' EQUITY JUNE 30, DECEMBER 31, 2004 2003 ------------ ----------- ($ IN THOUSANDS) Current liabilities: Current portion of long-term debt $ 1,414 $ 225 Income taxes payable 2,106 897 Accounts payable 50,139 41,577 Accrued liabilities 46,899 50,725 Deferred revenues 4,561 5,444 ---------- --------- Total current liabilities 105,119 98,868 ---------- --------- Long-term debt - less current portion 250,039 255,040 Deferred income taxes 114,420 106,134 Minority interests 2,783 2,933 Other long-term liabilities 16,822 19,854 ---------- --------- 384,064 383,961 ---------- --------- Contingencies and commitments -- -- Stockholders' equity: Preferred stock, $1.00 par value per share. Authorized 20,000,000 shares -- -- Common stock, $.10 par value per share. Authorized 60,000,000 shares, issued 30,907,000 shares 3,091 3,091 Additional paid-in capital 181,404 178,720 Accumulated other comprehensive income (3,223) (5,950) Deferred compensation (2,592) (1,003) Retained earnings 333,373 310,575 ---------- --------- 512,053 485,433 Less cost of 6,360,000 shares in treasury (6,590,000 at December 31, 2003) 109,431 113,301 ---------- --------- 402,622 372,132 ---------- --------- $ 891,805 $ 854,961 ========== ========= See accompanying notes to condensed financial statements. 3

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES CONDENSED STATEMENTS OF EARNINGS (UNAUDITED) THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ----------------------------- ---------------------------- 2004 2003 2004 2003 ------------ ------------ ----------- ---------- ($ IN THOUSANDS, EXCEPT PER SHARE AMOUNTS) Revenues: Marine transportation $ 149,065 $ 137,156 $ 284,558 $ 262,221 Diesel engine services 21,811 21,583 43,633 44,718 --------- ---------- --------- ---------- 170,876 158,739 328,191 306,939 --------- ---------- --------- ---------- Costs and expenses: Costs of sales and operating expenses 108,391 101,153 211,318 202,004 Selling, general and administrative 19,479 18,751 39,444 36,312 Taxes, other than on income 4,150 3,485 7,402 6,536 Depreciation and other amortization 13,591 12,894 27,388 25,126 Loss on disposition of assets 196 126 198 133 --------- ---------- --------- ---------- 145,807 136,409 285,750 270,111 --------- ---------- --------- ---------- Operating income 25,069 22,330 42,441 36,828 Equity in earnings of marine affiliates 494 751 1,316 1,187 Other expense (51) (199) (322) (602) Interest expense (3,290) (3,867) (6,664) (7,321) --------- ---------- --------- ---------- Earnings before taxes on income 22,222 19,015 36,771 30,092 Provision for taxes on income (8,444) (7,226) (13,973) (11,435) --------- ---------- --------- ---------- Net earnings $ 13,778 $ 11,789 $ 22,798 $ 18,657 ========= ========== ========= ========== Net earnings per share of common stock: Basic $ .56 $ .49 $ .93 $ .77 ========= ========== ========= ========== Diluted $ .55 $ .48 $ .91 $ .77 ========= ========== ========= ========== See accompanying notes to condensed financial statements. 4

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES CONDENSED STATEMENTS OF CASH FLOWS (UNAUDITED) SIX MONTHS ENDED JUNE 30, -------------------------------- 2004 2003 ----------- ---------- ($ IN THOUSANDS) Cash flows from operating activities: Net earnings $ 22,798 $ 18,657 Adjustments to reconcile net earnings to net cash provided by operations: Depreciation and other amortization 27,388 25,126 Deferred income taxes 6,883 706 Equity in earnings of marine affiliates, net of distributions (86) 954 Other 936 1,454 Increase (decrease) in cash flows resulting from changes in operating assets and liabilities, net 17,381 (1,607) ----------- ---------- Net cash provided by operating activities 75,300 45,290 ----------- ---------- Cash flows from investing activities: Capital expenditures (56,060) (37,723) Acquisitions of businesses and marine equipment (9,785) (37,816) Proceeds from disposition of assets 2,298 1,050 ----------- ---------- Net cash used in investing activities (63,547) (74,489) ----------- ---------- Cash flows from financing activities: Payments on bank credit facilities, net (5,000) (220,700) Proceeds from senior notes -- 250,000 Payments on long-term debt (112) (168) Proceeds from exercise of stock options 3,956 1,228 Other (327) (283) ----------- ----------- Net cash provided by (used in) financing activities (1,483) 30,077 ----------- ---------- Increase in cash and cash equivalents 10,270 878 Cash and cash equivalents, beginning of year 4,064 1,432 ----------- ---------- Cash and cash equivalents, end of period $ 14,334 $ 2,310 =========== ========== Supplemental disclosures of cash flow information: Cash paid during the period: Interest $ 6,374 $ 6,532 Income taxes $ 1,717 $ 11,195 Noncash investing activity: Notes payable issued in acquisition $ 1,300 $ -- See accompanying notes to condensed financial statements. 5

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS (UNAUDITED) In the opinion of management, the accompanying unaudited condensed financial statements of Kirby Corporation and consolidated subsidiaries (the "Company") contain all adjustments (consisting of only normal recurring accruals) necessary to present fairly the financial position as of June 30, 2004 and December 31, 2003, and the results of operations for the three months and six months ended June 30, 2004 and 2003. (1) BASIS FOR PREPARATION OF THE CONDENSED FINANCIAL STATEMENTS The condensed financial statements included herein have been prepared by the Company, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. Although the Company believes that the disclosures are adequate to make the information presented not misleading, certain information and footnote disclosures, including significant accounting policies normally included in annual financial statements, have been condensed or omitted pursuant to such rules and regulations. It is suggested that these condensed financial statements be read in conjunction with the Company's Annual Report on Form 10-K for the year ended December 31, 2003. (2) ACQUISITIONS On January 15, 2003, the Company purchased from SeaRiver Maritime, Inc. ("SeaRiver"), the U.S. transportation affiliate of Exxon Mobil Corporation, 45 double hull inland tank barges and seven inland towboats for $32,113,000 in cash, and assumed from SeaRiver the leases of 16 double hull inland tank barges. On February 28, 2003, the Company purchased three double hull inland tank barges leased by SeaRiver from Banc of America Leasing & Capital, LLC ("Banc of America Leasing") for $3,453,000 in cash. The Company entered into a contract to provide inland marine transportation services to SeaRiver, transporting petrochemicals, refined petroleum products and black oil products throughout the Gulf Intracoastal Waterway and the Mississippi River System. Financing of the equipment acquisitions was through the Company's revolving credit facility. On April 7, 2004, the Company purchased from Walker Paducah Corp. ("Walker"), a subsidiary of Ingram Barge Company ("Ingram"), Walker's diesel engine service operation and parts inventory located in Paducah, Kentucky for $5,755,000 in cash. In addition, the Company entered into a contract to provide diesel engine services to Ingram. Financing of the acquisition was through the Company's bank revolving credit facility. On April 16, 2004, the Company purchased a one-third interest in Osprey Line, LLC ("Osprey") for $4,220,000. The purchase price consisted of cash of $2,920,000 and notes payable totaling $1,300,000 due in April 2005. The remaining two-thirds interest is owned by Cooper/T. Smith Corporation and Richard L. Couch. Osprey, formed in 2000, operates a barge feeder service for cargo containers between Houston, New Orleans and Baton Rouge, as well as several ports located above Baton Rouge on the Mississippi River. Revenues for Osprey for 2003 were approximately $11,700,000. The purchase will be accounted for under the equity method of accounting and the cash portion of the purchase price was financed through the Company's revolving credit facility. 6

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (3) ACCOUNTING STANDARDS In June 2001, Statement of Financial Accounting Standards No. 143, "Accounting for Asset Retirement Obligations" ("SFAS No. 143") was issued. SFAS No. 143 addresses financial accounting and reporting for obligations associated with the retirement of tangible long-lived assets and associated asset retirement costs. SFAS No. 143 requires the fair value of a liability associated with an asset retirement be recognized in the period in which it is incurred if a reasonable estimate of fair value can be determined. The associated retirement costs are capitalized as part of the carrying amount of the long-lived asset and depreciated over the life of the asset. The Company adopted SFAS No. 143 effective January 1, 2003 with no effect on the Company's financial position or results of operations. In April 2002, Statement of Financial Accounting Standards No. 145, "Rescission of SFAS No. 4, 44, and 64, Amendment of SFAS No. 13 and Technical Corrections" ("SFAS No. 145") was issued. SFAS No. 145 provides guidance for accounting for certain lease modifications that have economic effects that are similar to sale-leaseback transactions and income statement classification of gains and losses on extinguishment of debt. The Company adopted SFAS No. 145 effective January 1, 2003 with no effect on the Company's financial position or results of operations. In November 2002, the Financial Accounting Standards Board ("FASB") issued Interpretation No. 45, "Guarantor's Accounting and Disclosure Requirements for Guarantees, Including Indirect Guarantees of Indebtedness to Others, an interpretation of FASB Statements No. 5, 57, and 197 and a rescission of FASB Interpretation No. 34." This Interpretation elaborates on the disclosures to be made by a guarantor in its interim and annual financial statements about its obligations under certain guarantees issued. The Interpretation also clarifies that a guarantor is required to recognize, at inception of a guarantee, a liability for the fair value of the obligation undertaken. The disclosure requirements are effective for the Company's financial statements for interim and annual periods ending after December 15, 2002. The Company adopted the recognition provisions of the Interpretation effective January 1, 2003 for guarantees issued or modified after December 31, 2002. The adoption of the Interpretation did not have a material effect on the Company's financial position or results of operations. The Company's guarantees as of June 30, 2004 are described in Note 9, Contingencies. In December 2002, Statement of Financial Accounting Standards No. 148, "Accounting for Stock-Based Compensation - Transition and Disclosure" ("SFAS No. 148") was issued. SFAS No. 148 amends Statement of Financial Accounting Standards No. 123, "Accounting for Stock-Based Compensation" ("SFAS No. 123") and provides alternative methods of transition for a voluntary change to the fair value based method of accounting for stock-based employee compensation. In addition, SFAS No. 148 amends the disclosure requirements of SFAS No. 123 to require prominent disclosures in both annual and interim financial statements about the method of accounting for stock-based employee compensation and the effect of the method used on reported results. The Company accounts for stock-based compensation utilizing the intrinsic value method in accordance with the provisions of Accounting Principles Board Opinion No. 25, "Accounting for Stock Issued to Employees." Under the intrinsic value method of accounting for stock-based employee 7

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (3) ACCOUNTING STANDARDS - (CONTINUED) compensation, since the exercise price of the Company's stock options is at the fair market value on the date of grant, no compensation expense is recorded. The Company is required under SFAS No. 123 to disclose pro forma information relating to option grants as if the Company used the fair value method of accounting, which requires the recording of estimated compensation expenses. The following table summarizes pro forma net earnings and earnings per share for the three months and six months ended June 30, 2004 and 2003 assuming the Company had used the fair value method of accounting for its stock option plans (in thousands, except per share amounts): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------------- ------------------------ 2004 2003 2004 2003 ------------ ------------- ------------ --------- Net earnings, as reported $ 13,778 $ 11,789 $ 22,798 $ 18,657 Deduct: Total stock-based employee compen- sation expense determined under fair value based method for all awards, net of related tax effects (902) (884) (1,652) (1,730) ---------- ------------ ------------ --------- Pro forma net earnings $ 12,876 $ 10,905 $ 21,146 $ 16,927 ========== ============ ============ ========== Earnings per share: Basic - as reported $ .56 $ .49 $ .93 $ .77 Basic - pro forma $ .53 $ .45 $ .87 $ .70 Diluted - as reported $ .55 $ .48 $ .91 $ .77 Diluted - pro forma $ .51 $ .45 $ .85 $ .69 In January 2003, the FASB issued Interpretation No. 46, "Consolidation of Variable Interest Entities, an interpretation of ARB No. 51" and revised this interpretation in December 2003 (collectively, "the Interpretations"). The Interpretations address the consolidation by business enterprises of variable interest entities as defined in the Interpretations. The Interpretations apply immediately to variable interest in variable interest entities created after January 31, 2003, and to variable interests in variable entities obtained after January 31, 2003. The application of these Interpretations has not had an effect on the Company's financial position or results of operations. In April 2003, Statement of Financial Accounting Standards No. 149, "Amendment of Statement 133 on Derivative Instruments and Hedging Activities" ("SFAS No. 149") was issued. SFAS No. 149 amends and clarifies financial accounting and reporting for derivative instruments and hedging activities under SFAS No. 133. SFAS No. 149 amends SFAS No. 133 for decisions made: (1) as part of the Derivatives Implementation Group process that requires amendments to SFAS No. 133; (2) in connection 8

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (3) ACCOUNTING STANDARDS - (CONTINUED) with other Financial Accounting Standards Board projects dealing with financial instruments; and (3) in connection with the implementation issues raised related to the application of the definition of a derivative. SFAS No. 149 is effective for contracts entered into or modified after June 30, 2003 and for hedging relationships designated after June 30, 2003. The adoption of SFAS No. 149 had no effect on the Company's financial position or results of operations. In May 2003, Statement of Financial Accounting Standards No. 150, "Accounting for Certain Financial Instruments with Characteristics of both Liabilities and Equity" ("SFAS No. 150") was issued. SFAS No. 150 establishes standards for classification and measurement in the statement of financial position of certain financial instruments with characteristics of both liabilities and equity. It requires classification of a financial instrument that is within its scope as a liability (or an asset in some circumstances). SFAS No. 150 is effective for financial instruments entered into or modified after May 31, 2003, and otherwise is effective at the beginning of the first interim period beginning after June 15, 2003. The adoption of SFAS No. 150 had no effect on the Company's financial position or results of operations. (4) COMPREHENSIVE INCOME The Company's total comprehensive income for the three months and six months ended June 30, 2004 and 2003 were as follows (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------ ------------------------- 2004 2003 2004 2003 ----------- ---------- ----------- ---------- Net earnings $ 13,778 $ 11,789 $ 22,798 $ 18,657 Change in fair value of derivative financial instruments, net of tax 4,839 (14) 2,727 203 --------- --------- ---------- ---------- Total comprehensive income $ 18,617 $ 11,775 $ 25,525 $ 18,860 ========= ========= ========== ========== (5) SEGMENT DATA The Company's operations are classified into two reportable business segments as follows: Marine Transportation - Marine transportation by United States flag vessels on the United States inland waterway system. The principal products transported on the United States inland waterway system include petrochemicals, black oil products, refined petroleum products and agricultural chemicals. 9

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (5) SEGMENT DATA - (CONTINUED) Diesel Engine Services - Overhaul and repair of large medium-speed diesel engines, reduction gear repair, and sale of related parts and accessories for customers in the marine, power generation and industrial, and railroad industries. The following table sets forth the Company's revenues and profit (loss) by reportable segment for the three months and six months ended June 30, 2004 and 2003 and total assets as of June 30, 2004 and December 31, 2003 (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------------------- ------------------------------------ 2004 2003 2004 2003 ------------- -------------- ------------- -------------- Revenues: Marine transportation $149,065 $137,156 $284,558 $262,221 Diesel engine services 21,811 21,583 43,633 44,718 -------- -------- -------- -------- $170,876 $158,739 $328,191 $306,939 ======== ======== ======== ======== Segment profit (loss): Marine transportation $ 24,861 $ 21,782 $ 41,735 $ 35,486 Diesel engine services 2,184 2,172 4,623 4,589 Other (4,823) (4,939) (9,587) (9,983) -------- -------- -------- -------- $ 22,222 $ 19,015 $ 36,771 $ 30,092 ======== ======== ======== ======== JUNE 30, DECEMBER 31, 2004 2003 ------------- ---------- Total assets: Marine transportation $806,194 $779,121 Diesel engine services 47,640 40,152 Other 37,971 35,688 -------- -------- $891,805 $854,961 ======== ======== 10

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (5) SEGMENT DATA - (CONTINUED) The following table presents the details of "Other" segment profit (loss) for the three months and six months ended June 30, 2004 and 2003 (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------------- --------------------------- 2004 2003 2004 2003 ------------ ------------ ------------ ----------- General corporate expenses $ (1,780) $ (1,498) $ (3,719) $ (3,114) Loss on disposition of assets (196) (126) (198) (133) Interest expense (3,290) (3,867) (6,664) (7,321) Equity in earnings of marine affiliates 494 751 1,316 1,187 Other expense (51) (199) (322) (602) -------- --------- -------- --------- $ (4,823) $ (4,939) $ (9,587) $ (9,983) ======== ========= ======== ========= The following table presents the details of "Other" total assets as of June 30, 2004 and December 31, 2003 (in thousands): JUNE 30, DECEMBER 31, 2004 2003 ------------ ------------ General corporate assets $ 24,502 $ 26,526 Investment in marine affiliates 13,469 9,162 --------- --------- $ 37,971 $ 35,688 ========= ========= (6) TAXES ON INCOME Earnings before taxes on income and details of the provision for taxes on income for the three months and six months ended June 30, 2004 and 2003 were as follows (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, --------------------------- -------------------------- 2004 2003 2004 2003 ----------- ----------- ----------- ---------- Earnings before taxes on income - United States $ 22,222 $ 19,015 $ 36,771 $ 30,092 ========= ========== ========== ========== Provision for taxes on income: Current $ 4,911 $6,164 $6,527 $10,274 Deferred 2,751 566 6,126 306 State and local 782 496 1,320 855 --------- --------- ---------- ---------- $ 8,444 $ 7,226 $ 13,973 $ 11,435 ========= ========= ========== ========== 11

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (7) EARNINGS PER SHARE OF COMMON STOCK The following table presents the components of basic and diluted earnings per share of common stock for the three months and six months ended June 30, 2004 and 2003 (in thousands, except per share amounts): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, --------------------------- --------------------------- 2004 2003 2004 2003 ----------- ----------- ----------- ----------- Net earnings $ 13,778 $ 11,789 $ 22,798 $ 18,657 ========= ========= ========= ========= Shares outstanding: Weighted average common stock outstanding 24,434 24,105 24,392 24,084 Effect of dilutive securities: Employee and director common stock options 659 307 611 286 --------- --------- --------- --------- 25,093 24,412 25,003 24,370 ========= ========= ========= ========= Basic earnings per share of common stock $ .56 $ .49 $ .93 $ .77 ========= ========= ========= ========= Diluted earnings per share of common stock $ .55 $ .48 $ .91 $ .77 ========= ========= ========= ========= Certain outstanding options to purchase approximately 24,000 and 386,000 shares of common stock were excluded in the computation of diluted earnings per share as of June 30, 2004 and 2003, respectively, as such stock options would have been antidilutive. (8) RETIREMENT PLANS The Company sponsors a defined benefit plan for vessel personnel. The plan benefits are based on an employee's years of service and compensation. The plan assets primarily consist of fixed income securities and corporate stocks. Funding of the plan is based on actuarial projections that are designed to satisfy minimum ERISA funding requirements to achieve adequate funding of accumulated benefit obligations. 12

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (8) RETIREMENT PLANS - (CONTINUED) The following table presents the components of net periodic benefit cost of the defined benefit plan for the three months and six months ended June 30, 2004 and 2003 (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, --------------------------- -------------------------- 2004 2003 2004 2003 ----------- ----------- ----------- ---------- Net periodic benefit cost Service cost $ 915 $ 821 $ 1,827 $ 1,539 Interest cost 1,153 1,171 2,301 2,196 Expected return on assets (1,459) (1,348) (2,913) (2,528) Amortization of prior service cost (22) (25) (44) (46) Amortization of actuarial loss 494 478 987 896 Less partnerships' allocation (36) (38) (70) (76) --------- --------- --------- --------- Net periodic benefit cost $ 1,045 $ 1,059 $ 2,088 $ 1,981 ========= ========= ========= ========= The Company expects to contribute $200,000 to its pension plan in November 2004 to fund its 2004 pension plan obligations. As of June 30, 2004, no contributions have been made. The Company sponsors an unfunded defined benefit health care plan that provides limited postretirement medical benefits to employees who meet minimum age and service requirements, and to eligible dependents. The plan is contributory, with retiree contributions adjusted annually. The following table presents the components of net periodic benefit cost of the unfunded defined benefit healthcare plan for the three months and six months ended June 30, 2004 and 2003 (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, --------------------------- --------------------------- 2004 2003 2004 2003 ----------- ----------- ----------- ----------- Net periodic benefit cost Service cost $ 94 $ 145 $ 186 $ 290 Interest cost 142 256 282 512 Amortization of prior service cost 10 18 20 36 Amortization of actuarial gain (5) (36) (10) (72) --------- --------- --------- --------- Net periodic benefit cost $ 241 $ 383 $ 478 $ 766 ========= ========= ========= ========= The Medicare Prescription Drug, Improvement and Modernization Act of 2003 ("the Act") was signed December 8, 2003 to make additional voluntary benefits available through Medicare. The Company deferred recognition of the effects of the Act in these financial statements in accordance with FASB Staff Position Nos. 106-1 and 106-2 ("FSPs"), which prescribed accounting under the Act. The 13

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES NOTES TO CONDENSED FINANCIAL STATEMENTS - (CONTINUED) (UNAUDITED) (8) RETIREMENT PLANS - (CONTINUED) Company will be evaluating the implications of the Act during 2004 and recognize expected financial effects as prescribed by the FSPs beginning in the third quarter of 2004. (9) CONTINGENCIES The Company has issued guaranties or obtained stand-by letters of credit and performance bonds supporting performance by the Company and its subsidiaries of contractual or contingent legal obligations incurred in the ordinary course of business. The aggregate notional value of these instruments is $1,789,000 at June 30, 2004, including $869,000 in letters of credit and $920,000 in performance bonds, of which $683,000 of these financial instruments relates to contingent legal obligations which are covered by the Company's liability insurance program in the event the obligations are incurred. All of these instruments have an expiration date within three years. The Company does not believe demand for payment under these instruments is likely and expects no material cash outlays to occur in connection with these instruments. The Company and a group of approximately 45 other companies have been notified that they are Potentially Responsible Parties ("PRPs") under the Comprehensive Environmental Response, Compensation and Liability Act with respect to a potential Superfund site, the Palmer Barge Line Site ("Palmer"), located in Port Arthur, Texas. In prior years, Palmer had provided tank barge cleaning services to various subsidiaries of the Company. The Company and three other PRPs have entered into an agreement with the Environmental Protection Agency ("EPA") to perform a remedial investigation and feasibility study. Based on information currently available, the Company is unable to ascertain the extent of its exposure, if any, in this matter. The Company and certain subsidiaries have received a Request For Information ("RFI") from the EPA under the Comprehensive Environmental Response, Compensation and Liability Act with respect to a potential Superfund site, the Gulfco site, located in Freeport, Texas. In prior years, a company unrelated to Gulfco operated at the site and provided tank barge cleaning services to various subsidiaries of the Company. An RFI is not a determination that a party is responsible or potentially responsible for contamination at a site, it is only a request seeking any information a party may have with respect to a site as part of an EPA investigation into such site. Based on information currently available, the Company is unable to ascertain the extent of its exposure, if any, in this matter. In addition, there are various other suits and claims against the Company, none of which in the opinion of management will have a material effect on the Company's financial condition, results of operations or cash flows. Management believes that it has recorded adequate reserves and believes that it has adequate insurance coverage or has meritorious defenses for these other claims and contingencies. 14

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES PART I FINANCIAL INFORMATION ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS OF OPERATIONS Statements contained in this Form 10-Q that are not historical facts, including, but not limited to, any projections contained herein, are forward-looking statements and involve a number of risks and uncertainties. Such statements can be identified by the use of forward-looking terminology such as "may," "will," "expect," "anticipate," "estimate," or "continue" or the negative thereof or other variations thereon or comparable terminology. The actual results of the future events described in such forward-looking statements in this Form 10-Q could differ materially from those stated in such forward-looking statements. Among the factors that could cause actual results to differ materially are: adverse economic conditions, industry competition and other competitive factors, adverse weather conditions such as high water, low water, tropical storms, hurricanes, fog and ice, marine accidents, lock delays, fuel costs, interest rates, construction of new equipment by competitors, including construction with government assisted financing, government and environmental laws and regulations, and the timing, magnitude and number of acquisitions made by the Company. For purposes of the Management's Discussion, all earnings per share are "Diluted earnings per share." The weighted average number of common shares applicable to diluted earnings for the second quarter of 2004 and 2003, and for the first six months of 2004 and 2003 were as follows (in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ---------------------- --------------------- 2004 2003 2004 2003 ---------- ---------- --------- --------- Weighted average number of common stock-diluted 25,093 24,412 25,003 24,370 ========== ========== ========= ========= The increase in the weighted average number of common shares for both 2004 periods compared with the 2003 periods primarily reflected the exercise of employee and director stock options, as well as additional dilutive shares applicable to stock options plans. OVERVIEW The Company is the nation's largest domestic inland tank barge operator with a fleet as of June 30, 2004 of 887 active tank barges, with a total capacity of 16.3 million barrels, and operated an average of 237 inland towboats during the 2004 second quarter and 234 inland towboats during the 2004 first six months. The Company uses the inland waterway system of the United States to transport bulk liquids including petrochemicals, black oil products, refined petroleum products and agricultural chemicals. Through its diesel engine services segment, the Company provides after-market services for large medium-speed diesel engines used in marine, power generation and industrial, and rail applications. During the 2004 first six months, approximately 87% of the Company's revenue was generated by its marine transportation segment. The segment's customers include many of the major United States petrochemical and refining companies. Products transported include raw materials for many of the end products used widely by businesses and consumers every day - plastics, fiber, paints, detergents, oil additives and paper, among others. Consequently, the Company's business tends to mirror the general performance of the United States economy and the performance of the Company's customer base. The 15

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES OVERVIEW - (CONTINUED) following table shows the products transported by the Company, the revenue distribution for the first half of 2004, the uses of these products and the factors that drive the demand for the products the Company transports: END USES OF PRODUCTS TRANSPORTED 2004 FIRST SIX MONTHS REVENUE PRODUCTS TRANSPORTED DISTRIBUTION USES OF PRODUCTS TRANSPORTED DRIVERS - ------------------------ ------------ ----------------------------------- ----------------------- Petrochemicals 68% Plastics, Fibers, Paper, Housing, Consumer Goods, Gasoline Additives Autos, Clothing, Vehicle Usages Black Oil Products 18% Asphalt, Boiler Fuel, No. 6 Fuel Road Construction, Feedstock Oil, Coker Feedstocks, Residual for Refineries, Fuel for Power Fuel, Crude Oil, Ship Bunkers Plants and Ships Refined Petroleum 10% Gasoline Blends, No. 2 Oil, Vehicle Usage, Air Travel, Products Jet Fuel, Heating Oil Weather Conditions Agricultural 4% Liquid Fertilizers, Chemical Corn, Cotton, Wheat Production Chemicals Feedstocks For the 2004 second quarter, the Company reported net earnings of $13,778,000, or $.55 per share, on revenues of $170,876,000. For the 2004 first six months, the Company's net earnings were $22,798,000, or $.91 per share, on revenues of $328,191,000. The results for both 2004 periods reflect the continued improvement in the United States and global economies. The 2004 first six months results also reflect the full impact of the January 15, 2003 acquisition of the SeaRiver inland marine transportation equipment. The purchase of the SeaRiver fleet, the United States marine transportation affiliate of ExxonMobil, included 48 double hull inland tank barges and seven towboats, and assumption of the leases on 16 double hull inland tank barges. The Company's 2004 second quarter marine transportation segment's revenues and operating income increased 9% and 14%, respectively, when compared with the 2003 second quarter. The segment's revenues and operating income for the first six months of 2004 increased 9% and 18%, respectively, when compared with the corresponding period of 2003. During both 2004 periods, the segment's largest market, the petrochemical market, continued to experience an improvement in volumes, primarily the result of the strengthening United States economy. The black oil market for both 2004 periods also remained strong, due primarily to increased refinery production generating demand for the waterborne transportation of heavier residual oil by-products. The segment's refined products market experienced the normal seasonal Gulf Coast to Midwest volumes during both 2004 periods. The agricultural chemical market was weak in the 2004 first quarter and very weak during the 2004 second quarter due primarily to high Midwest inventory levels and the high price of the product. The marine transportation segment was successful in modestly raising rates on several contract renewals during the 2004 first six months, a continuation of a trend that started during the 2003 fourth quarter. In addition, effective January 1, 2004, contract escalators for labor, consumer price index and fuel on numerous multiyear contracts resulted in a rate increase for those contracts of approximately 2%. Spot market rates during the 2004 first six months were generally higher for most marine transportation 16

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES OVERVIEW - (CONTINUED) markets and above contract rates. Currently, approximately 70% of the Company's marine transportation revenue is under term contracts with the remaining 30% in the spot market. The 70% contract and 30% spot market mix provides the Company with a stable revenue stream with less exposure to day-to-day pricing fluctuations. As is expected, the marine transportation segment's first quarter results were negatively impacted by navigational delays, both weather and lock related. Navigational delays for the 2004 first quarter totaled 2,359 days, only 9% less than the record 2,583 days recorded in the 2003 first quarter. The delays for the 2004 first quarter were both weather and lock related, while the 2003 first quarter delays were primarily from the repair of a key lock located on the Gulf Intracoastal Waterway. Navigational delays for the 2004 second quarter totaled 1,822 days compared with 1,268 delay days recorded for the 2003 second quarter. The 44% increase was primarily due to the closure for repair during May of a major lock on the Gulf Intracoastal Waterway. Navigational delays require the use of additional chartered towboats to meet customer delivery schedules and result in increased transit times, negatively impacting the marine transportation segment's operating margins. For the 2004 second quarter, the marine transportation segment's operating margin was 16.7% compared with 15.9% for the 2003 second quarter. For the 2004 first six months, the segment's margin was 14.7% compared with 13.5% for the 2003 first six months. The Company's 2004 third quarter performance will be negatively impacted by the closure of the McAlpine Lock on the Ohio River for major repairs for approximately two weeks in August. The lock closure will stop all waterborne traffic on the Ohio River with a destination upriver of Louisville, Kentucky, including Cincinnati and Pittsburgh. The Company has estimated in conjunction with its public disclosure of projected earnings for the third quarter that the impact will be approximately $.02 to $.03 per share. The Company's diesel engine services segment's 2004 second quarter revenues and operating income each increased 1% when compared with the 2003 second quarter. The segment's revenues for the 2004 first six months decreased 2% and operating income increased 1%, when compared with the corresponding period of 2003. The results for both 2004 periods reflect a stronger Midwest dry cargo river market, and the April 2004 acquisition of Walker. The segment's rail market strengthened in the 2004 second quarter. Continued weakness in the Gulf Coast offshore oil service market, the East Coast and West Coast marine markets, and the power generation market negatively affected both 2004 periods. The Company continued to generate strong cash flow provided by operating activities during the 2004 second quarter and first six months. The Company's outstanding debt as of June 30, 2004 was $251,453,000, a reduction of $3,812,000 when compared with $255,265,000 as of December 31, 2003. During the 2004 first half, the Company's debt-to-capitalization ratio was reduced from 40.7% as of December 31, 2003 to 38.4% as of June 30, 2004. Also during the 2004 first half, capital expenditures totaled $56,060,000, of which $23,623,000 was for construction of new tank barges, with the remaining $32,437,000 principally for upgrades of the existing marine transportation fleet. 17

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES OVERVIEW - (CONTINUED) In the 2004 first quarter, the Company purchased two pre-owned ammonia tank barges for $1,110,000. On April 7, 2004, the Company purchased from Walker, a subsidiary of Ingram, Walker's diesel engine service operation and parts inventory located in Paducah, Kentucky for $5,755,000 in cash. On April 16, 2004, the Company purchased a one-third interest in Osprey for $4,220,000, consisting of $2,920,000 in cash and notes payable totaling $1,300,000 due in April 2005. Osprey operates a feeder service for cargo containers on barges along the United States Gulf Coast and inland waterway system. The Company anticipates that during the second half of 2004, the United States and global economies will be stable to modestly improving, which may lead to a quarter over quarter increase in petrochemical volumes transported by the Company's marine transportation segment. During the 2004 first half, feedstock and energy costs were high and the Company expects such costs to remain high and volatile at least through the remainder of 2004. High feedstock and energy costs could slow down or delay the improvement in petrochemical volumes that the Company has experienced during 2003 and the 2004 first half. Industry-wide, tank barge capacity declined during 2001 and 2002 and remained relatively constant in 2003. This smaller industry-wide tank barge capacity supports higher industry utilization and the improved pricing environment. ACQUISITIONS On January 15, 2003, the Company purchased from SeaRiver, the U.S. transportation affiliate of ExxonMobil, 45 double hull inland tank barges and seven inland towboats for $32,113,000 in cash, and assumed from SeaRiver the leases of 16 double hull inland tank barges. On February 28, 2003, the Company purchased three double hull inland tank barges leased by SeaRiver from Banc of America Leasing for $3,453,000 in cash. In addition, the Company entered into a contract to provide inland marine transportation services to SeaRiver. On April 7, 2004, the Company purchased from Walker, a subsidiary of Ingram, Walker's diesel engine service operation and parts inventory located in Paducah, Kentucky for $5,755,000 in cash. In addition, the Company entered into a contract to provide diesel engine services to Ingram. On April 16, 2004, the Company purchased a one-third interest in Osprey for $4,220,000. The purchase price consisted of cash of $2,920,000 and notes payable totaling $1,300,000 due in April 2005. The remaining two-thirds interest is owned by Cooper/T. Smith Corporation and Richard L. Couch. Osprey, formed in 2000, operates a feeder service for cargo containers on barges between Houston, New Orleans and Baton Rouge, as well as several ports located above Baton Rouge on the Mississippi River. 18

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES RESULTS OF OPERATIONS The Company reported second quarter 2004 net earnings of $13,778,000, or $.55 per share, on revenues of $170,876,000, compared with second quarter 2003 net earnings of $11,789,000, or $.48 per share, on revenues of $158,739,000. Net earnings for the 2004 first six months were $22,798,000, or $.91 per share, on revenues of $328,191,000, compared with net earnings of $18,657,000, or $.77 per share, on revenues of $306,939,000 for the first six months of 2003. The following table sets forth the Company's marine transportation and diesel engine services revenues for the 2004 second quarter compared with the second quarter of 2003, the first six months of 2004 compared with the first six months of 2003 and the percentage of each to total revenues for the comparable periods (dollars in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------------------------- ---------------------------------------- 2004 % 2003 % 2004 % 2003 % ------------- ----- ------------- ---- ------------ ------ ----------- ----- Marine transportation $ 149,065 87% $ 137,156 86% $ 284,558 87% $ 262,221 85% Diesel engine services 21,811 13 21,583 14 43,633 13 44,718 15 ------------- ----- ------------- ---- ------------ ------ ----------- ----- $ 170,876 100% $ 158,739 100% $ 328,191 100% $ 306,939 100% ============ ===== ============= ==== ============ ====== =========== ===== MARINE TRANSPORTATION The Company, through its marine transportation segment, is a provider of marine transportation services, operating inland tank barges and towing vessels, transporting petrochemicals, black oil products, refined petroleum products and agricultural chemicals along the United States inland waterways. As of June 30, 2004, the marine transportation segment operated 887 active inland tank barges, with a total capacity of 16.3 million barrels, compared with 897 active inland tank barges at June 30, 2003, with a total capacity of 16.3 million barrels. The segment also operated an average of 237 inland towboats during the 2004 second quarter and 234 inland towboats during the first six months of 2004. This compared with an average of 226 inland towboats operated during the second quarter of 2003 and 228 during the first six months of 2003. The marine transportation segment is also the managing partner of a 35% owned offshore marine partnership, consisting of four dry-bulk barge and tug units. The partnership is accounted for under the equity method of accounting. 19

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES MARINE TRANSPORTATION - (CONTINUED) The following table sets forth the Company's marine transportation segment's revenues, costs and expenses, operating income and operating margins for the three months and six months ended June 30, 2004 compared with the three months and six months ended June 30, 2003 (dollars in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------- % ------------------------- % 2004 2003 CHANGE 2004 2003 CHANGE ----------- ------------ ------- ----------- ------------ ------ Marine transportation revenues $ 149,065 $ 137,156 9% $ 284,558 $ 262,221 9% ----------- ------------ ------- ----------- ------------ ------ Costs and expenses: Costs of sales and operating expenses 92,081 85,050 8 179,047 168,221 6 Selling, general and administrative 15,228 14,837 3 30,732 28,620 7 Taxes, other than on income 4,049 3,342 21 7,182 6,244 15 Depreciation and other amortization 12,846 12,145 6 25,862 23,650 9 ----------- ------------ ------- ----------- ------------ ------ 124,204 115,374 8 242,823 226,735 7 ----------- ------------ ------- ----------- ------------ ------ Operating income $ 24,861 $ 21,782 14% $ 41,735 $ 35,486 18% =========== ============ ======= =========== ============ ====== Operating margins 16.7% 15.9% 14.7% 13.5% MARINE TRANSPORTATION REVENUES Revenues for the 2004 second quarter increased 9% compared with the 2003 second quarter, reflecting stronger petrochemical and black oil products volumes, modest contract rate increases, and fuel, labor and consumer price index escalators effective January 1, 2004 on numerous multi-year contracts. Revenues for the 2004 first six months also increased 9% compared with the first six months of 2003, reflecting the reasons noted above, as well as reflecting the full 2004 first quarter impact of the January 15, 2003 purchase of the inland tank barge fleet of SeaRiver. Petrochemical volumes transported during the 2004 second quarter and first six months remained strong, primarily due to the improvement in the United States and global economies. Black oil volumes during the 2004 second quarter and first six months were higher than the comparable 2003 periods, reflecting increased refinery production generating demand for waterborne transportation of heavier residual oil by-products. With the high price of crude oil, the refining industries objective is to recapture as much value from each barrel of crude oil as possible. Refined products volumes transported into the Midwest during the 2004 second quarter and first six months were generally at normal seasonal levels. Liquid fertilizer volumes, seasonally weak during the 2004 first quarter, were unseasonally weak during the 2004 second quarter, caused primarily by high Midwest inventory levels and product prices. During the 2004 second quarter and first six months, approximately 70% of marine transportation revenues were under term contracts and 30% were spot market revenues. Contract rate renewals reflected the continuation of modest increases during the second quarter and first six months of 20

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES MARINE TRANSPORTATION REVENUES - (CONTINUED) 2004, primarily the result of increased volumes industry wide and overall higher utilization of tank barges. Effective January 1, 2004, escalators for labor, consumer price index and fuel on numerous multi-year contracts did result in a rate increase for those contracts of approximately 2%. Spot market rates during the 2004 second quarter and first six months were generally higher for most product lines and above contract rates, with black oil and petrochemical Gulf Intracoastal Waterway volumes reflecting the largest spot market increases. MARINE TRANSPORTATION COSTS AND EXPENSES Costs of sales and operating expenses for the 2004 second quarter and first six months were 8% and 6% higher, respectively, than the comparable periods of 2003, reflecting wage increases and related expenses effective January 1, 2004, as well as additional operating expenses associated with the increased volumes transported. During the 2004 second quarter, the segment operated an average of 237 inland towboats compared with an average of 226 operated during the 2003 second quarter. For the 2004 first six months, the segment operated an average of 234 inland towboats compared with an average of 228 during the 2003 first six months. The number of towboats operated is adjusted daily, depending on the amount of volumes transported, weather conditions and voyage times. The segment consumed 14.7 million gallons of diesel fuel during the 2004 second quarter compared with 14.5 million during the 2003 second quarter. For the 2004 first six months, the segment consumed 28.2 million gallons of diesel fuel compared with 27.4 million during the 2003 first six months. The increase for both comparable periods primarily reflected the improved business levels. Selling, general and administrative expenses for the 2004 second quarter increased 3% compared with the 2003 second quarter, and increased 7% in the 2004 first six months compared with the first six months of 2003. The increases for both comparable periods reflect salary increases and related expenses effective January 1, 2004, higher incentive compensation accruals, higher medical costs and increased professional and legal fees. Taxes, other than on income, for the 2004 second quarter and first six months increased 21% and 15%, respectively, compared with the corresponding periods of 2003, primarily reflecting increased waterway use taxes from increased business activity levels and higher property taxes on new and existing inland tank barges and towboats. Depreciation and other amortization expenses for the 2004 second quarter and first six months increased 6% and 9%, respectively, compared with the corresponding 2003 periods. The increases reflected depreciation on new tank barge additions and capital expenditures in the 2004 first half and during the 2003 year. MARINE TRANSPORTATION OPERATING INCOME AND OPERATING MARGINS Marine transportation operating income for the 2004 second quarter increased 14% compared with the second quarter of 2003. For the first six months of 2004, the operating income for the segment increased 18% compared with the first six months of 2003. The 2004 second quarter operating margin 21

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES MARINE TRANSPORTATION OPERATING INCOME AND OPERATING MARGINS - (CONTINUED) increased to 16.7% compared with 15.9% for the 2003 second quarter. The operating margin for the first six months of 2004 was 14.7% compared with 13.5% for the first six months of 2003. The higher operating margins for both 2004 periods over the comparable 2003 periods reflected the improved marine transportation volumes, the January 1, 2004 fuel, labor and consumer price index escalators on numerous multi-year contracts and the renewal of contracts with rate increases in the 2% to 4% range during the first six months of 2004. DIESEL ENGINE SERVICES The Company, through its diesel engine services segment, sells genuine replacement parts, provides service mechanics to overhaul and repair large medium-speed diesel engines and reduction gears, and maintains facilities to rebuild component parts or entire large medium-speed diesel engines or entire reduction gears. The segment services the marine, power generation and industrial, and railroad markets. The following table sets forth the Company's diesel engine services segment's revenues, costs and expenses, operating income and operating margins for the three months and six months ended June 30, 2004 compared with the three months and six months ended June 30, 2003 (dollars in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, % JUNE 30, % ----------------------- ---------------------- 2004 2003 CHANGE 2004 2003 CHANGE ---------- ---------- -------- ---------- ---------- -------- Diesel engine services revenues $ 21,811 $ 21,583 1% $ 43,633 $ 44,718 (2)% --------- --------- ---- -------- --------- ---- Costs and expenses: Costs of sales and operating expenses 16,233 16,076 1 32,167 33,705 (5) Selling, general and administrative 3,017 2,994 1 6,051 5,748 5 Taxes, other than on income 91 77 18 173 160 8 Depreciation and other amortization 286 264 8 619 516 20 --------- --------- ---- -------- --------- ---- 19,627 19,411 1 39,010 40,129 (3) --------- --------- ---- -------- --------- ---- Operating income $ 2,184 $ 2,172 1% $ 4,623 $ 4,589 1% ======== ======== ==== ======== ========= ==== Operating margins 10.0% 10.1% 10.6% 10.3% DIESEL ENGINE SERVICES REVENUES Revenues for the 2004 second quarter increased 1% compared with the 2003 second quarter. For the 2003 first half, revenues decreased 2% when compared with the corresponding period of 2003. During both 2004 periods, the segment was positively impacted by an improved Midwest dry cargo market, the April 2004 purchase of the diesel engine services operations of Walker, and an improved railroad market, which benefited from several large orders from passenger railroad customers during the 22

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES DIESEL ENGINE SERVICES REVENUES - (CONTINUED) 2004 second quarter. The Gulf Coast offshore oil service market remained weak, as well as the power generation market. The East Coast marine market, weak in the 2004 first quarter, did reflect signs of improvement during the 2004 second quarter. The West Coast marine market, strong in the 2004 first quarter, slowed in the 2004 second quarter from the deferral by several customers of overhaul projects and direct parts orders. DIESEL ENGINE SERVICES COSTS AND EXPENSES Costs and expenses for the 2004 second quarter increased 1% compared with the 2003 second quarter, while costs and expenses for the 2004 first half decreased 3% compared with the corresponding 2003 period. The 2004 second quarter costs and expenses reflected the April 2004 acquisition of Walker. Cost of sales and operating expenses increased 1% for the 2004 second quarter and decreased 5% for the 2004 first six months, reflecting the Walker acquisition, and lower revenue for the first quarter of 2004. Selling, general and administrative expenses were higher for both 2004 periods versus 2003 primarily due to increases in salaries and related expenses and higher employee medical costs. DIESEL ENGINE SERVICES OPERATING INCOME AND OPERATING MARGINS Operating income for the diesel engine services segment for the 2004 second quarter and first six months increased 1% compared with the corresponding periods of 2003. The 2004 second quarter operating margin decreased slightly to 10.0% compared with 10.1% for the 2003 second quarter, while the operating margin for the 2004 first six months improved to 10.6% compared with 10.3% for the 2003 first six months. GENERAL CORPORATE EXPENSES General corporate expenses for the 2004 second quarter totaled $1,780,000, or 19% higher than the second quarter of 2003. For the first six months of 2004, general corporate expenses were $3,719,000, a 19% increase compared with the 2003 first six months. The increases for both comparable periods reflected increases in salaries and related expenses effective January 1, 2004, higher employee incentive compensation accruals, higher employee medical costs, increased legal and professional fees, including the costs of evaluating and implementing new accounting, disclosure and other governmental regulations. 23

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES OTHER INCOME AND EXPENSES The following table sets forth the loss on disposition of assets, equity in earnings of marine affiliates, other expense and interest expense for the three months and six months ended June 30, 2004 compared with the three months and six months ended June 30, 2003 (dollars in thousands): THREE MONTHS ENDED SIX MONTHS ENDED JUNE 30, JUNE 30, ------------------------- % --------------------- % 2004 2003 CHANGE 2004 2003 CHANGE ---------- ----------- ------- --------- --------- ------ Loss on disposition of assets $ (196) $ (126) 56 % $ (198) $ (133) 49 % Equity in earnings of marine affiliates $ 494 $ 751 (34)% $ 1,316 $ 1,187 11 % Other expense $ (51) $ (199) (74)% $ (322) $ (602) (47)% Interest expense $ (3,290) $ (3,867) (15)% $(6,664) $ (7,321) (9)% EQUITY IN EARNINGS OF MARINE AFFILIATES Equity in earnings of marine affiliates, consisting primarily of a 35% owned offshore marine partnership, decreased 34% for the 2004 second quarter compared with the 2003 second quarter. For the first six months of 2004, equity in earnings of marine affiliates increased 11% compared with the 2003 first six months. The lower results for the 2004 second quarter reflected fewer working days, the result of major shipyard repairs for two of the four partnership barge and tugboat units during the quarter. The favorable results for the 2004 first six months included the annual settlement of demurrage charges with a major customer. INTEREST EXPENSE Interest expense for the 2004 second quarter decreased 15% compared with the 2003 second quarter. For the 2004 first six months, interest expense decreased 9% compared with the 2003 first six months. The decrease for both comparable periods primarily reflected lower average debt. The average debt and average interest rate for the second quarter of 2004 and 2003, including the effect of interest rate swaps, were $257,679,000 and 5.1%, and $293,814,000 and 5.3%, respectively. For the first six months of 2004 and 2003, the average debt and average interest rate, including the effect of interest rate swaps, were $257,149,000 and 5.2%, and $292,408,000 and 5.1%, respectively. 24

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES FINANCIAL CONDITION, CAPITAL RESOURCES AND LIQUIDITY BALANCE SHEET Total assets as of June 30, 2004 were $891,805,000, a 4% increase compared with $854,961,000 as of December 31, 2003. The following table sets forth the significant components of the balance sheet as of June 30, 2004 compared with December 31, 2003 (dollars in thousands): JUNE 30, DECEMBER 31, 2004 2003 % CHANGE ------------- ---------------- ----------- Assets: Current assets $ 135,787 $ 131,779 3 % Property and equipment, net 564,287 536,512 5 Investment in marine affiliates 13,469 9,162 47 Goodwill, net 160,641 156,726 2 Other assets 17,621 20,782 (15) ----------- ----------- ---- $ 891,805 $ 854,961 4 % =========== =========== ==== Liabilities and stockholders' equity: Current liabilities $ 105,119 $ 98,868 6 % Long-term debt - less current portion 250,039 255,040 (2) Deferred income taxes 114,420 106,134 8 Minority interest and other long-term liabilities 19,605 22,787 (14) Stockholders' equity 402,622 372,132 8 ----------- ----------- ---- $ 891,805 $ 854,961 4 % =========== =========== ==== Current assets as of June 30, 2004 increased 3% compared with December 31, 2003. Cash and cash equivalents as of June 30, 2004 increased $10,270,000 compared with December 31, 2003. During the 2004 second quarter, the Company repaid all outstanding balances under its bank credit facilities. As of June 30, 2004, the Company had invested cash of $13,300,000. Trade accounts receivable increased 6%, reflecting the improved marine transportation volumes and resulting higher revenues in the 2004 first half. Other accounts receivable decreased 65%, reflecting a reduction in a receivable from the IRS of approximately $12,500,000. Inventory - finished goods increased 17%, with $1,573,000 of the Walker acquisition in April 2004 being the purchase of inventory, and the purchase of additional inventory in January 2004 to take advantage of a February 1, 2004 price increase by a major inventory supplier. Prepaid expenses and other assets decreased 17% from the sale of certain assets held for sale and the amortization of insurance premiums. Property and equipment, net of accumulated amortization, at June 30, 2004 increased 5% compared with December 31, 2003. The increase reflected $56,060,000 of capital expenditures, more fully described under Capital Expenditures below, $1,110,000 for the purchase of two pre-owned ammonia tank barges and $278,000 of property with the Walker acquisition, less $27,178,000 of depreciation expense and property disposals of $2,495,000 for the first six months of 2004. 25

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES BALANCE SHEET - (CONTINUED) Investment in marine affiliates as of June 30, 2004 increased 47% compared with December 31, 2003. The increase reflected the purchase of a one-third interest in Osprey in April 2004, equity in earnings of marine affiliates of $1,316,000, less $1,230,000 of distributions received during the first six months of 2004. Goodwill - net as of June 30, 2004 increased 2% compared with December 31, 2003, reflecting Walker acquisition goodwill. Current liabilities as of June 30, 2004 increased 6% compared with December 31, 2003. The increase was primarily due to a 21% increase in accounts payable, principally from the increase in activity levels of the marine transportation segment during the first six months of 2004. The increase was partially offset by a 8% reduction in accrued liabilities from the payment of employee incentive compensation earned during the 2003 year and the payment of property taxes accrued during the 2003 year. Long-term debt, less current portion, as of June 30, 2004 decreased 2% compared with December 31, 2003. The reduction primarily reflected the paydown of long-term debt using the Company's 2004 first six months net cash provided by operating activities of $75,300,000, proceeds from the disposition of assets totaling $2,298,000 and $3,956,000 of proceeds from the exercise of employee and nonemployee director stock options. Borrowings totaling $56,060,000 were used for the 2004 first six months capital expenditures and business and equipment acquisitions of $9,785,000. Deferred income taxes as of June 30, 2004 increased 8% compared with December 31, 2003, primarily due to bonus tax depreciation on qualifying marine transportation capital expenditures under federal legislation enacted in 2002 and 2003. Minority interest and other long-term liabilities as of June 30, 2004 decreased 14% compared with December 31, 2003, primarily due to the recording of a $3,545,000 decrease in the fair value of the interest rate swap agreements for the 2004 first six months, more fully described under Long-Term Financing below. Stockholders' equity as of June 30, 2004 increased 8% compared with December 31, 2003. The increase was primarily the result of recording $22,798,000 of net earnings for the first six months of 2004, a $3,870,000 decrease in treasury stock, an increase of $2,684,000 in additional paid-in capital, an increase in accumulated other comprehensive income of $2,727,000 and the recording of $1,589,000 of net deferred compensation related to restricted stock options. The decrease in treasury stock and increase in additional paid-in capital were attributable to the exercise of employee and nonemployee director stock options and the issuance of restricted stock. The increase in accumulated other comprehensive income resulted from the net changes in fair value of interest rate swap agreements, net of taxes, more fully described under Long-Term Financing below. 26

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES LONG-TERM FINANCING The Company has a $150,000,000 unsecured revolving credit facility ("Revolving Credit Facility") with a syndicate of banks, with JP Morgan Chase Bank as the agent bank, and with a maturity date of December 9, 2007. The Revolving Credit Facility allows for an increase in bank commitments from $150,000,000 up to a maximum of $225,000,000 without further amendments to the Revolving Credit Facility. As of June 30, 2004, the Company had no borrowings outstanding under the Revolving Credit Facility and had outstanding letters of credit totaling $11,000. The Company was in compliance with all Revolving Credit Facility covenants as of June 30, 2004. The Company has $250,000,000 of floating rate senior notes ("Senior Notes") due February 28, 2013. The notes are currently callable at par without penalty and no principal payments are required until maturity in 2013. As of June 30, 2004, $250,000,000 was outstanding under the Senior Notes. The Company was in compliance with all Senior Notes covenants as of June 30, 2004. The Company has an uncommitted $10,000,000 line of credit ("Credit Line") with Bank of America, N.A. for short-term liquidity needs and letters of credit. The Credit Line matures on November 3, 2004. As of June 30, 2004, the Company had no borrowings outstanding under the Credit Line and had outstanding letters of credit totaling $506,000. The Company has an uncommitted $5,000,000 revolving credit note ("Credit Note") with BNP Paribus ("BNP") for short-term liquidity needs. The Company did not have any borrowing outstanding under the Credit Note as of June 30, 2004. The Company has on file with the Securities and Exchange Commission a shelf registration for the issuance of up to $250,000,000 of debt securities, including medium term notes, providing for the issuance of fixed rate or floating rate notes with a maturity of nine months or longer. As of June 30, 2004, $121,000,000 was available under the shelf registration, subject to mutual agreement to terms, to provide financing for future business or equipment acquisitions, and to fund working capital requirements. As of June 30, 2004, there were no outstanding debt securities under the shelf registration. From time to time, the Company hedges its exposure to fluctuations in short-term interest rates under its Revolving Credit Facility and Senior Notes by entering into interest rate swap agreements. The interest rate swap agreements are designated as cash flow hedges, therefore, the changes in fair value, to the extent the swap agreements are effective, are recognized in other comprehensive income until the hedged interest expense is recognized in earnings. As of June 30, 2004, the Company had a total notional amount of $150,000,000 of interest rate swaps designated as cash flow hedges for its variable rate Senior Notes as follows (dollars in thousands): NOTIONAL FIXED AMOUNT TRADE DATE EFFECTIVE DATE TERMINATION DATE PAY RATE RECEIVE RATE - ------------ ------------------ -------------- ------------------ -------- ------------------ $ 100,000 February 2001 March 2001 March 2006 5.64% One-month LIBOR $ 100,000 September 2003 March 2006 February 2013 5.45% Three-month LIBOR $ 50,000 April 2004 April 2004 May 2009 4.00% Three-month LIBOR 27

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES LONG-TERM FINANCING - (CONTINUED) On April 29, 2004, the Company extended a hedge on part of its exposure to fluctuations in short-term interest rates by entering into a five-year interest rate swap agreement with a notional amount of $50,000,000 to replace a $50,000,000 swap that expired in April 2004. Under the agreement, the Company will pay a fixed rate of 4.00% for five years and will receive floating rate interest payments based on LIBOR for United States dollar deposits. The interest rate swap was designated as a cash flow hedge for the Company's Senior Notes. Interest rate swaps hedge a majority of the Company's long-term debt and only an immaterial loss on ineffectiveness was recognized in the 2004 second quarter and first six months. The total fair value of the interest rate swap agreements was recorded as an other long-term liability of $4,465,000 at June 30, 2004. The Company has recorded in interest expense, losses related to the interest rate swap agreements of $1,530,000 and $1,650,000 for the three months ended June 30, 2004 and 2003, respectively and $3,194,000 and $3,125,000 for the six months ended June 30, 2004 and 2003, respectively. Gains or losses on the interest rate swap contracts offset increases or decreases in rates of the underlying debt, which results in a fixed rate for the underlying debt. The Company anticipates $3,066,000 of net losses included in accumulated other comprehensive income will be transferred into earnings over the next year based on current interest rates. Fair value amounts were determined as of June 30, 2004 based on quoted market values of the Company's portfolio of derivative instruments. CAPITAL EXPENDITURES Capital expenditures for the 2004 first six months totaled $56,060,000, of which $23,623,000 was for construction of new tank barges, and $32,437,000 was primarily for upgrading of the existing marine transportation fleet. In February 2002, the Company entered into a contract for the construction of six double hull, 30,000 barrel capacity, inland tank barges for use in the transportation of petrochemicals and refined petroleum products. Five of the tank barges were delivered in 2003 and the sixth tank barge was delivered in February 2004. The total purchase price of the six barges was approximately $9,500,000, of which $780,000 was expended in 2002, $8,612,000 in 2003 and the balance in the 2004 first quarter. Financing of the construction of the six barges was through operating cash flows and available credit under the Company's Revolving Credit Facility. In October 2002, the Company entered into a contract for the construction of six double hull, 30,000 barrel capacity, inland tank barges for use in the transportation of petrochemical and refined petroleum products. Two of the six barges were delivered in the 2004 second quarter, two are anticipated in the third quarter and two in the fourth quarter. The total purchase price of the six barges is approximately $8,900,000, of which $1,111,000 was expended in 2003 and $4,764,000 was expended in the 2004 first six months. In May 2003, the Company entered into a contract for the construction of 16 double hull, 30,000 barrel capacity, inland tank barges with four for use in the transportation of petrochemical and refined petroleum products and 12 for use in the transportation of black oil products. Six of the 16 barges were delivered in 2003, one in the 2004 first quarter and nine in the 2004 second quarter. The total purchase 28

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES CAPITAL EXPENDITURES - (CONTINUED) price of the 16 barges was approximately $29,000,000, of which $10,806,000 was expended in 2003 and $17,590,000 was expended in the 2004 first six months. In October 2003, the Company entered into a contract for the construction of nine double hull, 30,000 barrel capacity, inland tank barges, five for use in the transportation of petrochemicals and refined petroleum products and four for use in the transportation of black oil products. Two barges are anticipated to be delivered in the 2004 third quarter and seven in the 2004 fourth quarter. The total purchase price of the nine barges is approximately $16,000,000, of which $1,188,000 was expended in 2004 first six months. In June 2004, the Company entered into a contract for the construction of 11 double hull, 30,000-barrel capacity, inland tank barges. Four of the tank barges will be for use in the transportation of petrochemical and refined petroleum products and seven for use in the transportation of black oil products. Delivery of the 11 barges is scheduled for January through May 2005. The total purchase price of the 11 barges is approximately $23,600,000, subject to adjustment based on steel prices and any scrap surcharges that apply at the time the steel is shipped. A number of tank barges in the combined black oil fleet of the Company and Coastal Towing, Inc. ("Coastal") are scheduled to be retired and replaced with new tank barges. Under the Company's barge management agreement with Coastal, Coastal has the right to maintain its same capacity share of the combined fleet by building replacement barges as older barges are retired. Coastal has elected not to exercise its right to purchase its share of the black oil barges the Company is currently building to replace the Coastal equipment. Funding for future capital expenditures and new tank barge construction is expected to be provided through operating cash flows and available credit under the Company's Revolving Credit Facility. TREASURY STOCK PURCHASES During the 2004 first six months, the Company did not purchase any treasury stock. As of August 5, 2004, the Company had 1,210,000 shares available under its common stock repurchase authorization. Historically, treasury stock purchases have been financed through operating cash flows and borrowing under the Company's Revolving Credit Facility. The Company is authorized to purchase its common stock on the New York Stock Exchange and in privately negotiated transactions. When purchasing its common stock, the Company is subject to price, trading volume and other market considerations. Shares purchased may be used for reissuance upon the exercise of stock options or the granting of other forms of incentive compensation, in future acquisitions for stock or for other appropriate corporate purposes. 29

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES LIQUIDITY The Company generated net cash provided by operating activities of $75,300,000 during the six months ended June 30, 2004, 66% higher than the $45,290,000 generated during the six months ended June 30, 2003. The 2004 first six months were positively influenced by favorable cash flow from working capital of $17,381,000 compared with unfavorable cash flow from working capital of $1,607,000 for the 2003 first six months. The Company accounts for its ownership in its four marine partnerships under the equity method of accounting, recognizing cash flow upon the receipt or distribution of cash from the partnerships and joint ventures. For the six months ended June 30, 2004 and 2003, the Company received net cash totaling $1,230,000 and $2,141,000, respectively, from the partnerships and joint ventures. Funds generated are available for acquisitions, capital expenditure projects, treasury stock repurchases, repayments of borrowings associated with each of the above and other operating requirements. In addition to net cash flow provided by operating activities, the Company also had available as of August 5, 2004, $149,989,000 under its Revolving Credit Facility and $121,000,000 under its shelf registration program, subject to mutual agreement on terms. As of August 5, 2004, the Company had $9,494,000 available under its Credit Line and $5,000,000 under the Credit Note. Neither the Company, nor any of its subsidiaries, is obligated on any debt instrument, swap agreement, or any other financial instrument or commercial contract which has a rating trigger, except for the pricing grids on its Revolving Credit Facility. The Company expects to continue to fund expenditures for acquisitions, capital construction projects, treasury stock repurchases, repayment of borrowings, and for other operating requirements from a combination of funds generated from operating activities and available financing arrangements. The Company has a 50% interest in a joint venture bulk liquid terminal business that has a $4,197,000 term loan outstanding at June 30, 2004. The loan is non-recourse to the Company and the Company has no guarantee obligation. The Company uses the equity method of accounting to reflect its investment in the joint venture. The Company has issued guaranties or obtained stand-by letters of credit and performance bonds supporting performance by the Company and its subsidiaries of contractual or contingent legal obligations incurred in the ordinary course of business. The aggregate notional value of these instruments is $1,789,000 at June 30, 2004, including $869,000 in letters of credit and $920,000 in performance bonds, of which $683,000 of these financial instruments relates to contingent legal obligations, which are covered by the Company's liability insurance program in the event the obligations 30

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES LIQUIDITY - (CONTINUED) are incurred. All of these instruments have an expiration date within three years. The Company does not believe demand for payment under these instruments is likely and expects no material cash outlays to occur in connection with these instruments. During the last three years, inflation has had a relatively minor effect on the financial results of the Company. The marine transportation segment has long-term contracts that generally contain cost escalation clauses whereby certain costs, including fuel, can be passed through to its customers; however, there is typically a 30 to 90 day delay before contracts are adjusted for fuel prices. The repair portion of the diesel engine services segment is based on prevailing current market rates. 31

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES PART I FINANCIAL INFORMATION ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK The Company is exposed to risk from changes in interest rates on certain of its outstanding debt. The outstanding loan balances under the Company's bank credit facilities bear interest at variable rates based on prevailing short-term interest rates in the United States and Europe. A 10% change in variable interest rates would impact the 2004 interest expense by approximately $146,000, based on balances outstanding at December 31, 2003, and change the fair value of the Company's debt by less than 1%. From time to time, the Company has utilized and expects to continue to utilize derivative financial instruments with respect to a portion of its interest rate risks to achieve a more predictable cash flow by reducing its exposure to interest rate fluctuations. These transactions generally are interest rate swap agreements which are entered into with major financial institutions. Derivative financial instruments related to the Company's interest rate risks are intended to reduce the Company's exposure to increases in the benchmark interest rates underlying the Company's Senior Notes and variable rate bank credit facilities. The Company does not enter into derivative financial instrument transactions for speculative purposes. From time to time, the Company hedges its exposure to fluctuations in short-term interest rates under its Revolving Credit Facility and Senior Notes by entering into interest rate swap agreements. The interest rate swap agreements are designated as cash flow hedges, therefore, the changes in fair value, to the extent to the swap agreements are effective, are recognized in other comprehensive income until the hedged interest expense is recognized in earnings. As of June 30, 2004, the Company had a total notional amount of $150,000,000 of interest rate swaps designated as cash flow hedges for its variable rate Senior Notes as follows (dollars in thousands): NOTIONAL FIXED AMOUNT TRADE DATE EFFECTIVE DATE TERMINATION DATE PAY RATE RECEIVE RATE - ------------ ------------------ -------------- ------------------ -------- ------------------ $ 100,000 February 2001 March 2001 March 2006 5.64% One-month LIBOR $ 100,000 September 2003 March 2006 February 2013 5.45% Three-month LIBOR $ 50,000 April 2004 April 2004 May 2009 4.00% Three-month LIBOR On April 29, 2004, the Company extended a hedge on part of its exposure to fluctuations in short-term interest rates by entering into a five-year interest rate swap agreement with a notional amount of $50,000,000 to replace a $50,000,000 interest rate swap that expired in April 2004. Under the agreement, the Company will pay a fixed rate of 4.00% for five years and will receive floating rate interest payments based on LIBOR for United States dollar deposits. The interest rate swap was designated as a cash flow hedge for the Company's Senior Notes. These interest rate swaps hedge a majority of the Company's long-term debt and only an immaterial loss on ineffectiveness was recognized in the 2004 second quarter and first six months. The total fair value of the interest rate swap agreements was recorded as an other long-term liability of $4,465,000 at June 30, 2004. The Company has recorded in interest expense, losses related to the interest rate swap agreements of $1,530,000 and $1,650,000 for the three months ended June 30, 2004 and 2003, 32

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES ITEM 3. QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK -(CONTINUED) respectively and $3,194,000 and $3,125,000 for the six months ended June 30, 2004 and 2003, respectively. Gains or losses on the interest rate swap contracts offset increases or decreases in rates of the underlying debt, which results in a fixed rate for the underlying debt. The Company anticipates $3,066,000 of net losses included in accumulated other comprehensive income will be transferred into earnings over the next year based on current interest rates. Fair value amounts were determined as of June 30, 2004 based on quoted market values of the Company's portfolio of derivative instruments. ITEM 4. CONTROLS AND PROCEDURES Based on their evaluation of the Company's disclosure controls and procedures (as defined in Rule 13a-15(e) under the Securities Exchange Act of 1934 (the "Exchange Act")) as of the end of the period covered by this quarterly report, the Company's Chief Executive Officer and Chief Financial Officer have concluded that the disclosure controls and procedures are effective to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Exchange Act is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. There were no changes in the Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter that have materially affected, or are reasonably likely to materially affect, the Company's internal control over financial reporting. 33

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES PART II - OTHER INFORMATION ITEM 1. LEGAL PROCEEDINGS The Company and a group of approximately 45 other companies have been notified that they are Potentially Responsible Parties ("PRPs") under the Comprehensive Environmental Response, Compensation and Liability Act with respect to a potential Superfund site, the Palmer Barge Line Site ("Palmer"), located in Port Arthur, Texas. In prior years, Palmer had provided tank barge cleaning services to various subsidiaries of the Company. The Company and three other PRPs have entered into an agreement with the EPA to perform a remedial investigation and feasibility study. Based on information currently available, the Company is unable to ascertain the extent of its exposure, if any, in this matter. The Company and certain subsidiaries have received a Request For Information ("RFI") from the EPA under the Comprehensive Environmental Response, Compensation and Liability Act with respect to a potential Superfund site, the Gulfco site, located in Freeport, Texas. In prior years, a company unrelated to Gulfco operated at the site and provided tank barge cleaning services to various subsidiaries of the Company. An RFI is not a determination that a party is responsible or potentially responsible for contamination at a site, it is only a request seeking any information a party may have with respect to a site as part of an EPA investigation into such site. Based on information currently available, the Company is unable to ascertain the extent of its exposure, if any, in this matter. In addition, there are various other suits and claims against the Company, none of which in the opinion of management will have a material effect on the Company's financial condition, results of operations or cash flows. Management believes that it has recorded adequate reserves and believes that it has adequate insurance coverage or has meritorious defenses for these other claims and contingencies. 34

KIRBY CORPORATION AND CONSOLIDATED SUBSIDIARIES PART II - OTHER INFORMATION ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K (a) Exhibits: 31.1 - Certification of Chief Executive Officer Pursuant to Rule 13a-14(a). 31.2 - Certification of Chief Financial Officer Pursuant to Rule 13a-14(a). 32 - Certification Pursuant to Rule 13a-14(b) and Section 906 of the Sarbanes-Oxley Act of 2002. (b) Reports on Form 8-K: The Company's report on Form 8-K dated April 28, 2004 stated that the Company issued a press release announcing the Company's 2004 first quarter results of operations. 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 thereunto duly authorized. KIRBY CORPORATION (Registrant) By: /s/ NORMAN W. NOLEN --------------------------------------- Norman W. Nolen Executive Vice President, Treasurer and Chief Financial Officer Dated: August 5, 2004 35

Exhibit 31.1 CERTIFICATION OF CHIEF EXECUTIVE OFFICER In connection with the filing of the Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 by Kirby Corporation, Joseph H. Pyne, President and Chief Executive Officer, certifies that: 1. I have reviewed this quarterly report on Form 10-Q of Kirby Corporation (the "Company"); 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this quarterly report; 4. The Company's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Company and we have: a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; b) Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and c) Disclosed in this quarterly report any change in the Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and 5. The Company's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors: a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal control over financial reporting. /s/ JOSEPH H. PYNE -------------------------------------- Joseph H. Pyne President and Chief Executive Officer Dated: August 5, 2004

Exhibit 31.2 CERTIFICATION OF CHIEF FINANCIAL OFFICER In connection with the filing of the Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 by Kirby Corporation, Norman W. Nolen, Executive Vice President, Treasurer and Chief Financial Officer, certifies that: 1. I have reviewed this quarterly report on Form 10-Q of Kirby Corporation (the "Company"); 2. Based on my knowledge, this quarterly report does not contain any untrue statement of a material fact or omit to state a material fact necessary to make the statements made, in light of the circumstances under which such statements were made, not misleading with respect to the period covered by this quarterly report; 3. Based on my knowledge, the financial statements, and other financial information included in this quarterly report, fairly present in all material respects the financial condition, results of operations and cash flows of the Company as of, and for, the periods presented in this quarterly report; 4. The Company's other certifying officer and I are responsible for establishing and maintaining disclosure controls and procedures (as defined in Exchange Act Rules 13a-15(e) and 15d-15(e)) for the Company and we have: a) Designed such disclosure controls and procedures, or caused such disclosure controls and procedures to be designed under our supervision, to ensure that material information relating to the Company, including its consolidated subsidiaries, is made known to us by others within those entities, particularly during the period in which this quarterly report is being prepared; b) Evaluated the effectiveness of the Company's disclosure controls and procedures and presented in this quarterly report our conclusions about the effectiveness of the disclosure controls and procedures, as of the end of the period covered by this quarterly report based on such evaluation; and c) Disclosed in this quarterly report any change in the Company's internal control over financial reporting that occurred during the Company's most recent fiscal quarter that has materially affected, or is reasonably likely to materially affect, the Company's internal control over financial reporting; and 5. The Company's other certifying officer and I have disclosed, based on our most recent evaluation of internal control over financial reporting, to the Company's auditors and the audit committee of the Company's board of directors: a) All significant deficiencies and material weaknesses in the design or operation of internal control over financial reporting which are reasonably likely to adversely affect the Company's ability to record, process, summarize and report financial information; and

b) Any fraud, whether or not material, that involves management or other employees who have a significant role in the Company's internal controls over financial reporting. /s/ NORMAN W. NOLEN ------------------------------------- Norman W. Nolen Executive Vice President, Treasurer and Chief Financial Officer Dated: August 5, 2004

EXHIBIT 32 CERTIFICATION PURSUANT TO SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002 In connection with the filing of the Quarterly Report on Form 10-Q for the quarter ended June 30, 2004 (the "Report") by Kirby Corporation (the "Company"), each of the undersigned hereby certifies that: 1. The Report fully complies with the requirements of Section 13(a) or 15(d) of the Securities Exchange Act of 1934, as amended; and 2. The information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of the Company. /s/ JOSEPH H. PYNE ------------------------------------------- Joseph H. Pyne President and Chief Executive Officer /s/ NORMAN W. NOLEN ------------------------------------------- Norman W. Nolen Executive Vice President, Treasurer and Chief Financial Officer Dated: August 5, 2004