425: Pacific Premier and Columbia Bancorps Supplement Merger Proxy Amid Shareholder Lawsuits

Pacific Premier Bancorp, Inc. and Columbia Banking System, Inc. have filed a Form 8-K to supplement their joint proxy statement/prospectus, addressing shareholder lawsuits and demand letters alleging material omissions related to their proposed merger.

Summary

• Pacific Premier Bancorp, Inc. and Columbia Banking System, Inc. are supplementing their Joint Proxy Statement/Prospectus concerning their previously announced merger, initially agreed upon April 23, 2025.
• The supplement is in response to three shareholder complaints and several demand letters filed against both companies and their directors, alleging material omissions and misleading claims in the original proxy statement.
• The lawsuits, filed in Washington and New York courts, seek injunctive relief to prevent the merger or the shareholder vote, rescission of the transaction if consummated, and damages.
• Both Pacific Premier and Columbia deny the claims are meritorious or that supplemental disclosure was legally required, but are providing additional information voluntarily to avoid nuisance, potential expense, and delay.
• The supplemental disclosures include detailed discussions from Columbia's board meetings regarding the strategic rationale, financial impact, due diligence, and integration plans for the merger.
• Pacific Premier's board considered the responses from three other potential strategic partners who declined to pursue a transaction due to an uncertain economic/regulatory environment, recent acquisition integration, or market volatility impacting all-stock transactions.
• Updated comparable company analyses and precedent transaction tables are provided for both Columbia and Pacific Premier, with financials as of December 31, 2024, and valuation as of April 22, 2025.
• New details on discount rate calculations for Columbia (11.07%) and Pacific Premier (11.57%) common stock are included, based on risk-free rate, equity risk premium, size premium, and 2-year beta.
• The pro forma analysis indicates the merger could be accretive to Columbia's estimated EPS by 13.5% in 2026, 14.7% in 2027, and 13.5% in 2028, but dilutive to tangible book value per share by 7.6% at closing (estimated December 31, 2025), decreasing to 0.0% dilution by 2028E.
• For Pacific Premier, the merger could be accretive to its estimated 2026 EPS by 84.1% and 2027 EPS by 66.5%, but dilutive to its tangible book value per share by 23.2% at closing (estimated December 31, 2025).
• KBW's fee for advising Pacific Premier is estimated at $22.5 million, with $2,000,000 already paid and the balance contingent on the merger's closing.

Sentiment

Score: 4

Explanation: The sentiment is moderately negative due to the emergence of multiple shareholder lawsuits challenging the merger's disclosures, which introduces significant legal uncertainty, potential costs, and risks of delay or even termination. While the companies deny wrongdoing and are proceeding with the merger, the litigation casts a shadow over the transaction's smooth completion.

Positives

• The companies are voluntarily supplementing the proxy statement to provide additional information and avoid potential expense and delay, without admitting liability or wrongdoing.
• The Columbia board of directors unanimously expressed support for continuing to explore the potential transaction with Pacific Premier, indicating strong internal alignment.
• The merger is expected to significantly accelerate Columbia's strategic goal of expanding its Southern California presence and leverage Pacific Premier's complementary commercial banking strategy and HOA banking, custodial trust, escrow, 1031 exchange, and API banking businesses.
• The transaction is projected to be accretive to Columbia's estimated earnings per share by 13.5% in 2026, 14.7% in 2027, and 13.5% in 2028.
• The transaction is projected to be highly accretive to Pacific Premier's estimated earnings per share, by 84.1% in 2026 and 66.5% in 2027.
• The tangible book value dilution for Columbia is projected to decrease from 7.6% at closing to 0.0% by 2028E, indicating a relatively quick earn-back period.

Negatives

• Three lawsuits (Siegel, Clark, Parshall) and multiple demand letters have been filed against Columbia and Pacific Premier and their directors, alleging material omissions and misleading information in the Joint Proxy Statement/Prospectus.
• The lawsuits seek injunctive relief to prevent the merger or the shareholder vote, rescission of the transaction if consummated, and monetary damages, introducing significant legal uncertainty and potential costs.
• Other potential strategic partners for Pacific Premier declined to pursue a transaction due to an uncertain economic environment, uncertain regulatory environment for larger bank transactions, timing/status of integration efforts from recent acquisitions, or prevailing market volatility impacting all-stock transactions.
• The merger is expected to be dilutive to Columbia's tangible book value per share by 7.6% at closing (estimated December 31, 2025).
• The merger is expected to be significantly dilutive to Pacific Premier's tangible book value per share by 23.2% at closing (estimated December 31, 2025).

Risks

• Changes in general economic, political, or industry conditions, and in conditions impacting the banking industry specifically.
• Uncertainty in U.S. fiscal, monetary, and trade policy, including interest rate policies of the Federal Reserve Board.
• Effects of any declines in housing and commercial real estate prices, high or increasing unemployment rates, continued or renewed inflation, or any recession or slowdown in economic growth, particularly in the western United States.
• Volatility and disruptions in global capital and credit markets.
• Impact of bank failures or adverse developments at other banks on general investor sentiment regarding the stability and liquidity of banks.
• Changes in interest rates that could significantly reduce net interest income and negatively affect asset yields and valuations and funding sources, including impacts on prepayment speeds.
• Competitive pressures among financial institutions and nontraditional providers of financial services, including on product pricing and services.
• Concentrations within loan portfolios (including commercial real estate loans), large loans to certain borrowers, and large deposits from certain clients.
• The nature, extent, timing, and results of governmental actions, examinations, reviews, reforms, regulations, and interpretations; changes in laws or regulations.
• The occurrence of any event, change or other circumstances that could give rise to the right of one or both parties to terminate the merger agreement.
• The outcome of any legal proceedings that may be instituted against Columbia or Pacific Premier.
• Delays in completing the Proposed Transaction.
• Failure to obtain necessary regulatory approvals (and the risk that such approvals may result in the imposition of conditions that could adversely affect the combined company or the expected benefits).
• Failure to obtain shareholder or stockholder approvals, as applicable, or to satisfy any of the other conditions to the closing of the Proposed Transaction on a timely basis or at all.
• Changes in Columbia's or Pacific Premier's share price before closing, including as a result of the financial performance of the other party prior to closing, or more generally due to broader stock market movements, and the performance of financial companies and peer group companies.
• The possibility that the anticipated benefits of the Proposed Transaction are not realized when expected or at all, including as a result of the impact of, or problems arising from, the integration of the two companies.
• Certain restrictions during the pendency of the Proposed Transaction that may impact the parties' ability to pursue certain business opportunities or strategic transactions.
• The possibility that the Proposed Transaction may be more expensive to complete than anticipated, including as a result of unexpected factors or events.
• Diversion of management's attention from ongoing business operations and opportunities.
• Potential adverse reactions or changes to business or employee relationships, including those resulting from the announcement or completion of the Proposed Transaction.
• The ability to complete the Proposed Transaction and integration of Columbia and Pacific Premier promptly and successfully.
• The dilution caused by Columbia's issuance of additional shares of its capital stock in connection with the Proposed Transaction.

Future Outlook

The companies anticipate the merger will significantly accelerate Columbia's strategic goal of expanding its Southern California presence and leverage Pacific Premier's commercial banking franchise. Projections indicate the merger will be accretive to Columbia's EPS from 2026 through 2028, with tangible book value dilution expected to be fully earned back by 2028. For Pacific Premier, the merger is expected to be highly accretive to its EPS in 2026 and 2027. The companies acknowledge potential risks including economic and regulatory uncertainties, market volatility, and the outcome of ongoing legal proceedings, which could impact the timing and realization of anticipated benefits.

Management Comments

• Columbia management noted the expected efficiency of expanding into Pacific Premier's footprint through the potential transaction as compared to organic growth.
• Columbia management discussed the appeal of Pacific Premier's commercial banking franchise as well as its HOA banking business, custodial trust operations, escrow and 1031 exchange business, and its API banking platform.
• Mr. Stein stated that based on the status of due diligence, it was Columbia management's recommendation to move forward with the negotiations toward the potential transaction.

Industry Context

This filing highlights the ongoing consolidation trend within the U.S. banking sector, particularly among regional banks seeking to expand geographic reach and enhance specialized service offerings. The merger between Columbia and Pacific Premier aims to strengthen Columbia's presence in Southern California, a key growth market. The challenges faced by other potential strategic partners, citing uncertain economic and regulatory environments and integration issues from prior acquisitions, reflect broader industry headwinds and the cautious approach many institutions are taking towards M&A. The legal challenges underscore the increased scrutiny and potential litigation risks associated with large-scale financial transactions, particularly concerning disclosure requirements.

Comparison to Industry Standards

• The Columbia Peer Group, including Zions Bancorporation, Western Alliance Bancorporation, and First Horizon Corporation, shows a range of financial metrics as of December 31, 2024, with Price/TBV ranging from 87x (BankUnited, Inc.) to 238x (Cullen/Frost Bankers, Inc.), and LTM ROAA from 0.65% (Valley National Bancorp) to 1.90% (Bank OZK). Columbia's projected EPS accretion and TBV earn-back period should be evaluated against these peers' historical performance and market valuations.
• The Pacific Premier Peer Group, including Banc of California, Inc., First Interstate BancSystem, Inc., and Glacier Bancorp, Inc., exhibits diverse financial characteristics. Price/TBV for this group ranges from 69x (Hope Bancorp, Inc.) to 217x (Glacier Bancorp, Inc.), and LTM ROAA from 0.53% (Banc of California, Inc.) to 1.93% (Axos Financial, Inc.). Pacific Premier's projected relative EPS accretion and TBV dilution should be benchmarked against the performance of these comparable institutions.
• The analysis of precedent transactions, such as Old National Bancorp/Bremer Financial Corporation and SouthState Corporation/Independent Bank Group, Inc., provides context for valuation multiples. The observed low and high price-to-tangible book value multiples (1.00x to 1.84x) and one-day market premiums (1.0% to 28.9%) from these transactions offer a range against which the proposed Columbia-Pacific Premier deal's terms can be assessed for competitiveness and market acceptance.

Legal Proceedings

• Siegel vs. Columbia Banking System, Inc. et al. (No. 25-2-09604-7, filed June 24, 2025, Superior Court of Washington, County of Pierce): Alleges state law claims of breach of fiduciary duty to disclose material facts in the Joint Proxy Statement/Prospectus and negligent misrepresentation and concealment against Columbia and its directors.
• Clark v. Pacific Premier Bancorp, Inc. et al. (No. 653808/2025, filed June 24, 2025, Supreme Court of the State of New York, County of New York): Alleges state law claims of negligent representation and concealment with respect to allegedly materially incomplete and misleading claims in the Joint Proxy Statement/Prospectus against Pacific Premier and its directors.
• Parshall v. Pacific Premier Bancorp, Inc. et al. (No. 653824/2025, filed June 25, 2025, Supreme Court of the State of New York, County of New York): Alleges state law claims of negligent representation and concealment with respect to allegedly materially incomplete and misleading claims in the Joint Proxy Statement/Prospectus against Pacific Premier and its directors.
• Demand Letters: Received by both Pacific Premier and Columbia from purported stockholders/shareholders, generally alleging material omissions in the Joint Proxy Statement/Prospectus in violation of Section 14(a) and Section 20(a) of the Securities Exchange Act of 1934 and Rule 14a-9.

Stakeholder Impact

• Shareholders of Columbia and Pacific Premier: Face uncertainty regarding the merger's completion due to legal challenges, potential delays, and the need to review supplemental disclosures. The lawsuits seek to enjoin the shareholder vote or the transaction itself.
• Employees of Columbia and Pacific Premier: May experience uncertainty regarding future roles and integration processes due to the ongoing merger and associated legal proceedings.
• Customers of Columbia and Pacific Premier: Potential for changes in banking services, branch networks, or digital platforms post-merger, though the immediate impact of the legal proceedings is indirect.
• Creditors of Columbia and Pacific Premier: The merger's completion and the financial health of the combined entity could impact credit risk, though the immediate legal challenges are primarily disclosure-related rather than solvency-related.
• Regulatory Authorities: The SEC is involved in the filing process, and regulatory approvals are a key condition for the merger, which could be influenced by the legal proceedings or the need for further disclosures.

Next Steps

• Columbia and Pacific Premier will continue to defend against the claims asserted in the Siegel, Clark, and Parshall complaints and the Demand Letters.
• The companies will proceed with the Proposed Transaction, including seeking shareholder/stockholder approvals.
• The companies will continue to work towards obtaining necessary regulatory approvals for the merger.
• Integration planning for the combined entity (Columbia and Pacific Premier) will continue, including timelines for realizing synergies and systems conversion.

Key Dates

Recommendation

Keywords

Merger, Acquisition, SEC Filing, Form 8-K, Proxy Statement, Shareholder Lawsuit, Fiduciary Duty, Negligent Misrepresentation, Bank Merger, Financial Services, Corporate Governance, Risk Management, Financial Analysis, Banking Industry, Pacific Premier Bancorp, Columbia Banking System, Umpqua Bank