Exhibit 99.1

The following table sets forth selected financial data and should be read in conjunction with “Management’s Discussion and Analysis of Financial Condition and Results of Operations” and the Company’s audited consolidated financial statements and notes thereto included elsewhere in this current report. The selected financial data presented below have been derived from the Company’s consolidated financial statements; items may not sum due to rounding.

On December 26, 2006, GLDD Acquisitions Corp., then the Company’s parent corporation, was merged with a subsidiary of Aldabra Acquisition Corporation, or “Aldabra.” This merger, referred to in this current report as the “Aldabra Merger,” was accounted for as a reverse acquisition. Under this method of accounting, the Company was the acquiring company for financial reporting purposes. Accordingly, the merger was treated as the equivalent of the Company issuance of stock for the net monetary assets of Aldabra accompanied by a recapitalization. The net monetary assets of Aldabra, primarily cash, were stated at their fair value, which was equivalent to the carrying value, and accordingly no goodwill or other intangible assets were recorded.

Prior to the merger in 2006, the Company had Redeemable Preferred Stock. Dividends on the Company’s Series A and Series B Preferred Stock were cumulative semiannually and payable upon declaration at a rate of 8%. The preferred stock was recorded at its redemption and liquidation value of $1 per share, or $87 million plus accrued and unpaid dividends. Prior to the merger, there was $23.2 million in accumulated dividends outstanding. The holders of Preferred Stock were entitled to payment before any capital distribution was made with respect to any junior securities and had no voting rights. As a result of the merger on December 26, 2006, the preferred stock and accumulated dividends were exchanged for shares of Aldabra stock. The fair value of stock received was in excess of the carrying value of the Redeemable Preferred Stock at the time of the exchange. Therefore, the net loss available to common shareholders for the year ended December 31, 2006 was adjusted by $2.8 million in determining earnings per share. The historical results prior to the merger date of December 26, 2006, were that of GLDD Acquisitions Corp. The merger was considered a reverse acquisition, and therefore the weighted-average shares outstanding for all prior periods were retroactively restated to reflect the shares that were issued to acquire GLDD Acquisitions Corp common stock. Accordingly, 9,287,669, were deemed to be outstanding at the beginning of the earliest period presented.

Note: Items may not sum due to rounding.

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EBITDA, as provided herein, represents net income (loss) attributable to Great Lakes Dredge & Dock Corporation, adjusted for net interest expense, income taxes, depreciation and amortization expense. The Company presents EBITDA as an additional measure by which to evaluate the Company’s operating trends. The Company believes that EBITDA is a measure frequently used to evaluate performance of companies with substantial leverage and that all of the Company’s primary stakeholders (i.e. its stockholders, bondholders and banks) use EBITDA to evaluate the Company’s period to period performance. Additionally, management believes that EBITDA provides a transparent measure of the Company’s recurring operating performance and allows management to readily view operating trends, perform analytical comparisons and identify strategies to improve operating performance. For this reason, the Company uses a measure based upon EBITDA to assess performance for purposes of determining compensation under the Company’s incentive plan. EBITDA should not be considered an alternative to, or more meaningful than, amounts determined in accordance with accounting principles generally accepted in the United States (“GAAP”) including: (a) operating income as an indicator of operating performance; or (b) cash flows from operations as a measure of liquidity. As such, the Company’s use of EBITDA, instead of a GAAP measure, has limitations as an analytical tool, including the inability to determine profitability or liquidity due to the exclusion of interest and income tax expense and the associated significant cash requirements and the exclusion of depreciation and amortization, which represent significant and unavoidable operating costs given the level of indebtedness and capital expenditures needed to maintain the Company’s business. For these reasons, the Company uses operating income to measure the Company’s operating performance and uses EBITDA only as a supplement. The following is a reconciliation of EBITDA to net income (loss) attributable to Great Lakes Dredge and Dock Corporation:

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