Exhibit 99.4

UNAUDITED PRO FORMA COMBINED CONDENSED CONSOLIDATED FINANCIAL INFORMATION

The following unaudited pro forma combined condensed consolidated financial information has been prepared using the acquisition method of accounting, giving effect to our acquisition of The Private Bank of California, which we refer to as PBOC. The unaudited pro forma combined condensed consolidated statements of financial condition combines as of September 30, 2013 the historical financial information of Banc of California and the historical financial information of PBOC. The unaudited pro forma combined condensed consolidated statements of operations for the nine-month period ended September 30, 2013 and for the twelve-month period ended December 31, 2012 gives effect to our completed acquisitions of PBOC, which closed on July 1, 2013, as if the transaction had been completed on January 1, 2012.

The unaudited pro forma combined condensed consolidated financial information is presented for illustrative purposes only and does not indicate the financial results of the combined company had the companies actually been combined on the dates described above, nor is it necessarily indicative of the results of operations in future periods or the future financial position of the combined entities. The unaudited pro forma combined condensed consolidated financial information also does not consider any potential impacts of current market conditions on revenues, expense efficiencies, asset dispositions and share repurchases, among other factors.

The value of our shares of common stock issued in connection with the PBOC acquisition was based on the closing price of our common stock on the date the merger was completed. For purposes of the unaudited pro forma combined condensed consolidated financial information, the fair value of our common stock was assumed to be $12.00 per share.

The unaudited pro forma combined condensed consolidated financial information includes estimated pro forma adjustments to record assets and liabilities of PBOC at their respective fair values and represents our pro forma estimates based on available information. The pro forma adjustments included herein are subject to change depending on changes in interest rates and the fair value of the components of assets and liabilities and as additional information becomes available and additional analyses are performed. The final allocation of the purchase price will be determined after completion of thorough analyses to determine the fair value of PBOC’s tangible and identifiable intangible assets and liabilities as of the date the PBOC acquisition 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 our consolidated statement of operations due to adjustments in yields and interest rates and/or amortization or accretion of the adjusted assets or liabilities. Any changes to PBOC’s shareholders’ equity will also change the purchase price allocation, which may include the recording of a lower or higher amount of goodwill. The final adjustments may be materially different from the unaudited pro forma adjustments presented herein.

The unaudited pro forma combined condensed consolidated financial information, although helpful in illustrating the financial characteristics of the combined company under one set of assumptions, does not necessarily reflect the exact 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 the 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 applicable historical consolidated financial statements and the related notes of Banc of California and PBOC. Historical consolidated financial statements of Banc of California and PBOC have been filed with the SEC.

The unaudited pro forma combined 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 our common stock or the actual or future results of operations of Banc of California for any period. Actual results may be materially different than the pro forma information presented.

Banc of California, Inc.

Proforma Condensed Statements of Financial Condition

As of September 30, 2013 and December 31, 2012

(Dollars in thousands)

(Unaudited)

Banc of California, Inc.

Proforma Condensed Statements of Operations

For the nine months ended September 30, 2013

(Dollars in thousands, except per share data)

(Unaudited)

Banc of California, Inc.

Proforma Condensed Statements of Operations

For the twelve months ended December 31, 2012

(Dollars in thousands, except per share data)

(Unaudited)

Note A—Basis of Presentation

The unaudited pro forma combined condensed consolidated financial information and explanatory notes show the impact on the historical financial condition and results of operations of Banc of California, Inc. (the Company) resulting from the completed PBOC acquisition, which closed July 1, 2013, under the acquisition method of accounting. Under the acquisition method of accounting, the assets and liabilities of PBOC were recorded by the Company at their respective fair values as of the date transaction was completed. The unaudited pro forma combined condensed consolidated statement of financial condition includes the historical financial information of the Company, and the impact of the historical financial information of PBOC as of September 30, 2013. The unaudited pro forma combined condensed consolidated statements of operations for the nine months ended September 30, 2013 and for the twelve months ended December 31, 2012 give effect to the completed PBOC acquisition as if the transaction had been completed on January 1, 2012.

Since the PBOC acquisition is recorded using the acquisition method of accounting, all loans are recorded at fair value, including adjustments for credit quality, and no allowance for credit losses is carried over to the Company’s balance sheet. In addition, certain nonrecurring costs associated with the completed PBOC acquisition, such as potential severance, professional fees, legal fees and conversion-related expenditures, are expensed as incurred and not reflected in the unaudited pro forma combined condensed consolidated statements of operations.

While the recording of the acquired loans at their fair value will impact the prospective determination of the provision for loan and lease losses and the allowance for loan and lease losses, for purposes of the unaudited pro forma combined condensed consolidated statement of operations for the nine months ended September 30, 2013 and for the twelve months ended December 31, 2012, the Company assumed no adjustments to the historical amount of PBOC’s provision for loan losses.

Note B—Accounting Policies and Financial Statement Classifications

The Company reviewed the historical accounting policies of PBOC and made conforming adjustments or financial statement reclassifications as necessary.

Note C—Merger and Acquisition Integration Costs

In connection with the PBOC acquisition, operations of PBOC have been integrated into Bank of California, N.A. (the Bank). Certain decisions arose from the integration assessments involved in involuntary termination of employees, vacating leased premises, changing information systems, canceling contracts with certain service providers, selling or otherwise disposing of certain premises, furniture and equipment and reassessing a possible deferred tax asset valuation allowance from a potential change in control for tax purposes. The Company also incurred merger-related costs including professional fees, legal fees, system conversion costs and costs related to communications with customers and others. No such costs were considered in the accompanying unaudited pro forma combined condensed consolidated statements of operations.

Note D—Estimated Annual Cost Savings

The Company expects to realize cost savings from the completed the completion of the PBOC acquisition. These cost savings are not reflected in the unaudited pro forma combined condensed consolidated financial information and there can be no assurance they will be achieved in the amount, manner or timing currently contemplated.

Note E—Pro Forma Adjustments

The following pro forma adjustments have been reflected in the unaudited pro forma combined condensed consolidated financial information. All adjustments are based on current assumptions and valuations, which are subject to change.

(1) @$13.58/share