EXHIBIT 13 WILLBROS GROUP, INC. SELECTED CONSOLIDATED FINANCIAL AND OTHER DATA (Dollar amounts in thousands, except per share data) Year Ended December 31, ---------------------------------- 1998 1997 1996 ---------- ---------- ---------- Statement of Income Data: Contract revenues $ 281,618 $ 251,877 $ 197,688 Operating expenses: Contract cost 220,360 182,435 145,812 Depreciation and amortization 25,552 18,936 13,932 General and administrative 32,383 29,118 25,803 Compensation from changes in redemption value of common stock (1) - - 6,122 ---------- ---------- ---------- Operating income 3,323 21,388 6,019 Net interest income (expense) (484) 304 (215) Minority interest (1,132) (1,911) (2,220) Other income (expense) (1,502) 58 1,472 ---------- ---------- ---------- Income before income taxes 205 19,839 5,056 Provision (credit) for income taxes 4,567 5,723 2,332 ---------- ---------- ---------- Net income (loss) $ (4,362) $ 14,116 $ 2,724 ========== ========== ========== Earnings (loss) per share (2): Basic $ (.30) $ .97 $ .09 Diluted $ (.30) $ .96 $ .09 Cash Flow Data: Cash provided by (used in): Operating activities $ 15,199 $ 45,788 $ 29,961 Investing activities (34,684) (46,386) (24,072) Financing activities (15,506) 19,747 (1,630) Other Data: EBITDA (3) $ 26,241 $ 38,471 $ 19,203 Capital expenditures $ 36,112 $ 47,272 $ 24,957 Backlog (at period end) $ 286,473 $ 135,797 $ 108,751 Number of employees (at period end) 2,280 4,230 3,700 Balance Sheet Data (at period end): Cash and cash equivalents $ 8,247 $ 43,238 $ 24,118 Working capital 13,495 39,563 36,723 Total assets 159,939 201,202 147,465 Total debt 758 8,574 1,340 Redemption value of common stock held by plan participants - - - Redeemable preferred stock - - - Stockholders' equity 106,934 118,986 92,386 Year Ended December 31, ----------------------- 1995 1994 ---------- ---------- Statement of Income Data: Contract revenues $ 220,506 $ 145,716 Operating expenses: Contract cost 161,584 98,700 Depreciation and amortization 15,193 14,598 General and administrative 27,937 24,261 Compensation from changes in redemption value of common stock (1) 2,100 1,681 ---------- ---------- Operating income 13,692 6,476 Net interest income (expense) 144 835 Minority interest (1,589) (1,758) Other income (expense) (381) 113 ---------- ---------- Income before income taxes 11,866 5,666 Provision (credit) for income taxes (75) (4,146) ---------- ---------- Net income (loss) $ 11,941 $ 9,812 ========== ========== Earnings (loss) per share (2): Basic $ .84 $ .70 Diluted $ .84 $ .70 Cash Flow Data: Cash provided by (used in): Operating activities $ (8,396) $ (3,771) Investing activities (18,558) (13,169) Financing activities (2,321) (1,271) Other Data: EBITDA (3) $ 26,915 $ 19,429 Capital expenditures $ 18,946 $ 7,171 Backlog (at period end) $ 139,359 $ 97,493 Number of employees (at period end) 3,110 2,030 Balance Sheet Data (at period end): Cash and cash equivalents $ 19,859 $ 49,142 Working capital 38,767 28,390 Total assets 149,954 131,188 Total debt 3,119 5,828 Redemption value of common stock held by plan participants 7,918 5,430 Redeemable preferred stock 36,200 36,200 Stockholders' equity 39,273 27,340 (1) Under the Company's stock ownership plans established in 1992 and 1995, the Company had an obligation to purchase, under certain conditions and at a formula price, Common Stock held by retiring or terminating employees. The Company recorded as non-cash compensation expense the change in the redemption value at the end of each period using the maximum formula price. In addition, in the third quarter of 1996, the Company recognized a non-cash compensation expense of $4,695 for the difference between the maximum redemption value of the shares subject to redemption and the initial public offering price. The Company's stock redemption obligations terminated in the fourth quarter of 1996. (2) Earnings per share for the year ended December 31, 1996 is calculated after deducting $1,448 ($.10 per common share) of dividends on the Company's Preferred Stock. (3) EBITDA represents earnings (net income) before interest, income taxes, depreciation and amortization. Non-cash compensation expenses have not been added back in calculating EBITDA. EBITDA is not intended to represent cash flows for the period, nor has it been presented as an alternative to operating income as an indicator of operating performance. It should not be considered in isolation or as a substitute for measures of performance prepared in accordance with generally accepted accounting principles. See the Company's Consolidated Statements of Cash Flows in the Company's Consolidated Financial Statements included elsewhere in this Annual Report. EBITDA is included in this Annual Report because it is a basis upon which the Company assesses its financial performance. WILLBROS 18