Exhibit 99.3

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

On May 12, 2014, HC2 Holdings, Inc., a Delaware corporation (the “Company” or “HC2”), entered into a stock purchase agreement (the “Purchase Agreement”) with SAS Venture LLC, a Delaware limited liability company (the “Seller”), and, for limited purposes only, Scott A. Schuff, pursuant to which the Company agreed to purchase from the Seller an aggregate of 2,500,000 shares of common stock, par value $0.001 per share (the “Shares”), of Schuff International, Inc., a Delaware corporation and leading provider of structural steel fabrication and erection services in the United States (“Schuff”), representing approximately a 60% ownership interest in Schuff (“Schuff Acquisition”). On May 29, 2014, the Company completed the Schuff Acquisition. The purchase price for the Shares was $31.50 per Share, or a total aggregate consideration of $78.75 million, which was paid in cash.

Subsequent to this initial investment, the Company negotiated an agreement to purchase an additional 198,411 shares, which increased the Company’s ownership interest to approximately 65%. In June 2014, Schuff repurchased a portion of its outstanding common stock which had the effect of increasing the Company’s ownership interest to 70%.

The following unaudited pro forma condensed consolidated financial statements have been prepared to give effect to the completed Schuff Acquisition and related transactions, including the issuance of preferred and common stock and the entry into a credit facility by the Company to finance the Schuff Acquisition. The unaudited pro forma condensed consolidated balance sheet as of March 31, 2014 gives effect to the Schuff Acquisition as if it had occurred on March 31, 2014. The unaudited pro forma condensed consolidated balance sheet is derived from the unaudited historical financial statements of HC2 and Schuff as of March 31, 2014. The unaudited pro forma condensed consolidated statement of operations for the year ended December 31, 2013 and the unaudited pro forma condensed consolidated statement of operations for the three months ended March 31, 2014 gives effect to the Schuff Acquisition as if it had occurred on January 1, 2013. The unaudited pro forma condensed consolidated statement of operations is derived from the audited historical financial statements of HC2 and Schuff as of and for the year ended December 31, 2013 and the unaudited historical financial statements of HC2 and Schuff as of and for the three months ended March 31, 2014.

The Schuff Acquisition was accounted for under the acquisition method of accounting. Under the acquisition method of accounting, the total estimated purchase price, calculated as described in Note 2 to the unaudited pro forma condensed consolidated financial statements, is allocated to the tangible and intangible assets acquired and liabilities assumed in connection with the Schuff Acquisition, based on their estimated fair values as of the effective date of the Schuff Acquisition. The preliminary allocation of the purchase price was based upon management’s preliminary valuation of the fair value of tangible assets acquired and liabilities assumed and such estimates and assumptions are subject to change.

The unaudited pro forma condensed consolidated financial statements do not include any adjustments regarding liabilities incurred or cost savings achieved resulting from the integration of the companies, as management is in the process of assessing what, if any, future actions are necessary. The unaudited pro forma condensed consolidated financial statements are not intended to represent or be indicative of the consolidated results of operations or financial condition of HC2 that would have been reported had the acquisition been completed as of the dates presented, and should not be construed as representative of the future consolidated results of operations or financial condition of the combined entity.

The unaudited pro forma condensed consolidated financial statements should be read in conjunction with the historical audited and unaudited consolidated financial statements and related notes of HC2 and the sections entitled Management’s Discussion and Analysis of Financial Condition and Results of Operations contained in HC2’s Annual Report on Form 10-K for the fiscal year ended December 31, 2013, filed on March 31, 2014, and HC2’s Quarterly Report on Form 10-Q for the quarter ended March 31, 2014, filed on May 9, 2014, and the audited historical financial statements and related notes of Schuff as of December 29, 2013 and for the year then ended and the unaudited historical financial statements and related notes of Schuff as of March 30, 2014 and the three month periods ended March 30, 2014 and March 31, 2013, which are attached as Exhibit 99.1 and Exhibit 99.2, respectively, to this Form 8-K/A.

HC2 HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED BALANCE SHEET

AS OF MARCH 31, 2014

(in thousands)

See notes to unaudited pro forma condensed consolidated financial statements

HC2 HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

FOR THE THREE MONTHS ENDED MARCH 31, 2014

(in thousands, except per share amounts)

See notes to unaudited pro forma condensed consolidated financial statements

HC2 HOLDINGS, INC.

UNAUDITED PRO FORMA CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

FOR THE YEAR ENDED DECEMBER 31, 2013

(in thousands, except per share amounts)

See notes to unaudited pro forma condensed consolidated financial statements

NOTES TO THE UNAUDITED PRO FORMA CONDENSED CONSOLIDATED FINANCIAL STATEMENTS

Note 1. Basis of Pro Forma Presentation

The unaudited pro forma condensed consolidated financial statements have been prepared by HC2 Holdings, Inc. (“HC2” or the “Company”) pursuant to the rules and regulations of the Securities and Exchange Commission for the purposes of inclusion in HC2’s amended Form 8-K prepared and filed in connection with the Schuff Acquisition.

Certain information and certain disclosures normally included in financial statements prepared in accordance with U.S. generally accepted accounting principles (GAAP) have been condensed or omitted pursuant to such rules and regulations. However, the Company believes that the disclosures provided herein are adequate to make the information presented not misleading.

The following unaudited pro forma condensed consolidated financial statements have been prepared to give effect to the completed Schuff Acquisition. The unaudited pro forma condensed consolidated balance sheet as of March 31, 2014 gives effect to the Schuff Acquisition as if it had occurred on March 31, 2014. The unaudited pro forma condensed consolidated balance sheet is derived from the unaudited historical financial statements of HC2 and Schuff as of March 31, 2014. The unaudited pro forma condensed consolidated statement of operations for the year ended December 31, 2013 and the unaudited pro forma condensed consolidated statement of operations for the three months ended March 31, 2014 gives effect to the Schuff Acquisition as if it had occurred on January 1, 2013. The unaudited pro forma condensed consolidated statement of operations is derived from the audited historical financial statements of HC2 and Schuff as of and for the year ended December 31, 2013 and the unaudited historical financial statements of HC2 and Schuff as of and for the three months ended March 31, 2014.

The unaudited pro forma condensed consolidated financial statements are provided for informational purposes only and do not purport to be indicative of the Company’s consolidated financial position or consolidated results of operations which would actually have been obtained had such transactions been completed as of the date or for the periods presented, or of the consolidated financial position or consolidated results of operations that may be obtained in the future.

Note 2. Preliminary Purchase Price Allocation

On May 29, 2014, HC2 completed the Schuff Acquisition. The unaudited pro forma consolidated financial statements have been prepared to give effect to the completed Schuff Acquisition, which was accounted for under the acquisition method of accounting. Schuff and its family of steel companies is the largest steel fabrication and erection company in the United States. The 37-year-old company executes projects throughout the United States as well as internationally. Schuff offers integrated steel construction services from a single source including design-build, design-assist, engineering, BIM participation, 3D steel modeling/detailing, fabrication, advanced field erection, project management, and single-source steel management systems. The aggregate amount of the consideration paid by HC2 upon the completion of the Schuff Acquisition was $78.75 million in cash, calculated as the purchase of 2,500,000 shares of Schuff at $31.50 per share.

Under the acquisition method of accounting, the total estimated purchase price is allocated to Schuff’s net tangible and intangible assets acquired and liabilities assumed based on their estimated fair values as of May 29, 2014, the effective date of the Schuff Acquisition.

Based on management’s preliminary valuation of the fair value of tangible and intangible assets acquired and liabilities assumed, which are based on estimates and assumptions that are subject to change, and other factors as described in the introduction to these unaudited pro forma consolidated financial statements, the preliminary estimated purchase price is allocated as follows (in thousands):

Prior to the end of the measurement period for finalizing the purchase price allocation, if information becomes available which would indicate material adjustments are required to the purchase price allocation, such adjustments will be included in the purchase price allocation retrospectively.

Of the total estimated purchase price, $4.5 million has been allocated to definite-lived intangible assets acquired and consist of the value assigned to Schuff’s trade name. The definite-lived intangible assets will be amortized over their respective useful lives. The trade name definite-lived intangible asset will be amortized on a straight-line basis over the assigned useful lives of fifteen years. The amortization expense associated with these definite-lived intangible assets is not deductible for tax purposes.

The definite-lived intangible assets acquired will result in approximately the following annual amortization expense (in thousands):

Of the total estimated purchase price, approximately $24.5 million has been allocated to goodwill and is not deductible for tax purposes. Goodwill represents the excess of the purchase price of an acquired business over the fair value of the net tangible liabilities assumed and intangible assets acquired. Goodwill will not be amortized but instead will be tested for impairment at least annually (more frequently if indicators of impairment arise). In the event that management determines that the goodwill has become impaired, the Company will incur an accounting charge for the amount of the impairment during the fiscal quarter in which the determination is made.

Note 3. Pro Forma Adjustments

Pro forma adjustments are made to reflect the purchase price of Schuff, the issuance of preferred and common stock, the net borrowings under a credit agreement, adjustments of Schuff’s net assets and liabilities to estimates of the fair values of those assets and liabilities, the recording of intangible assets, the noncontrolling interest, the adjustment to depreciation expense resulting from the increase in net book value of property and equipment, the amortization expense related to the intangible assets, and the adjustment to net income (loss) for the noncontrolling interest.

The specific pro forma adjustments included in the unaudited pro forma consolidated financial statements are as follows:

The unaudited pro forma consolidated financial statements do not include adjustments for liabilities related to business integration activities for the Schuff Acquisition as management is in the process of assessing what, if any, future actions are necessary. However, liabilities ultimately may be recorded for costs associated with business integration activities for the Schuff Acquisition and such liabilities will be expensed as incurred in the Company’s consolidated financial statements.

The Company has not identified any material pre-Schuff Acquisition contingencies where the related asset, liability or impairment is probable and the amount of the asset, liability or impairment can be reasonably estimated.

Note 4. Pro Forma Net Loss Per Common Share

The pro forma basic and diluted net loss per common share is based on the weighted average number of common shares of HC2’s common stock outstanding during the period. The diluted weighted average number of common shares does not include outstanding stock options, restricted stock units or warrants as their inclusion would be antidilutive.