Exhibit 99.4

Introductory Note to Unaudited Pro Forma Combined Condensed Consolidated Financial Statements

The following unaudited pro forma combined condensed consolidated statements of financial condition at June 30, 2011 and the unaudited pro forma combined condensed consolidated statements of income for the year ended December 31, 2010 and six months ended June 30, 2011 give effect to the acquisition of GS Financial Corp. (“GSFC”) by Home Bancorp, Inc. (the “Company”) which was completed on July 15, 2011 (the “Merger”). The unaudited pro forma combined condensed financial information is set forth as if the Merger was completed on June 30, 2011 with respect to financial condition data and on January 1, 2010 and January 1, 2011, respectively, with respect to operations data.

The unaudited pro forma combined condensed consolidated financial statements give effect to the Merger as a business combination under U.S. generally accepted accounting principles (“GAAP”). Accordingly, all assets and liabilities were recorded at fair value. The fair value calculation for loans included adjustments for credit losses on impaired and non-impaired loans. Therefore, no allowance for loan losses was carried over.

While the recording of the acquired loans at their estimated fair value will impact the prospective determination of the provision for loan losses and the allowance for loan losses, for purposes of the unaudited pro forma combined condensed consolidated statement of income for the year ended December 31, 2010 and six months ended June 30, 2011, we assumed no adjustments to the historic amount of GSFC’s losses. If such an adjustment were estimated, there could be a change in the historic amounts of GSFC’s losses presented.

The pro forma financial information includes estimated adjustments to record assets and liabilities of GSFC at their respective fair values and represents the Company’s estimates based on available information. Any differences between the purchase price for GSFC and the fair value of the identifiable net assets acquired have been recorded as goodwill. The goodwill resulting from the acquisition will not be amortized to expense, but instead will be reviewed for impairment at least annually and to the extent goodwill is impaired, its carrying value will be written down to its implied fair value and a charge will be made to earnings. Core deposit and other intangibles with definite useful lives recorded by the Company in connection with the acquisition will be amortized to expense over their estimated useful lives.

The pro forma adjustments included herein are subject to change as additional information becomes available and additional analyses are performed. The final allocation of the purchase price will be determined after we complete further analyses under GAAP with respect to the fair value of GSFC’s tangible and identifiable intangible assets and liabilities as of the date the Merger was completed. Increases or decreases in the estimated fair values of the net assets as compared with the information shown in the unaudited pro forma combined condensed consolidated financial information may change the amount of the purchase price allocated to goodwill and other assets and liabilities and may impact the Company’s statement of income due to adjustments in yield and/or amortization of the adjusted assets or liabilities. The final adjustments may be materially different from the unaudited pro forma adjustments presented herein.

The Company anticipates that the Merger will provide the combined company with the ability to better serve its customers, reach new customers and reduce operating expenses. In addition, certain subjective estimates have been utilized in determining the pro forma adjustments applied to the historical results of operations of GSFC. The pro forma information, while helpful in illustrating the financial characteristics of the combined company under one set of assumptions, does not reflect the benefits of expected cost savings or opportunities to earn additional revenue and, accordingly, does not attempt to predict or suggest future results. It also does not necessarily reflect what the historical results of the combined company would have been had our companies been combined during these periods.

The unaudited pro forma combined condensed consolidated financial information has been derived from, and should be read in conjunction with, the historical consolidated financial statements and related notes of the Company and GSFC.

The unaudited pro forma shareholders’ equity and net income are qualified by the statements set forth under this caption and should not be considered indicative of the market value of the Company’s common stock or the actual or future results of operations of the Company for any period. Actual results may be materially different than the pro forma information presented herein.

HOME BANCORP INC. AND SUBSIDIARY

Unaudited Pro Forma Combined Condensed Consolidated Statement of Condition

The following table provides the calculation of the purchase price used in the pro forma financial statements:

HOME BANCORP INC. AND SUBSIDIARY

Unaudited Pro Forma Combined Condensed Consolidated Statements of Operations