Pacific Premier Bancorp : July 28, 2023 Investor Presentation

Strategy and

Governance

Update

Summer 2023

Steve Gardner Chairman, President & Chief Executive Officer [e-mail] 949-864-8000

M. Christian Mitchell Lead Independent Director [e-mail]213-233-1532

FORWARD LOOKING STATEMENTS AND

WHERE TO FIND MORE INFORMATION

Forward Looking Statements

This investor presentation contains "forward-looking statements" within the meaning of the Private Securities Litigation Reform Act of 1995 regarding the financial condition, results of operations, business plans and the future performance of Pacific Premier Bancorp, Inc. ("PPBI" or the "Company"), including its wholly-owned subsidiary Pacific Premier Bank ("Pacific Premier" or the "Bank"). Words such as "anticipates," "believes," "estimates," "expects," "forecasts," "intends," "plans," "projects," "could," "may," "should," "will" or other similar words and expressions are intended to identify these forward-looking statements. These forward-looking statements are based on PPBI's current expectations and beliefs concerning future developments and their potential effects on the Company including, without limitation, plans, strategies and goals, and statements about the Company's expectations regarding revenue and asset growth, financial performance and profitability, loan and deposit growth, yields and returns, loan diversification and credit management, stockholder value creation, capital management, tax rates and acquisitions we have made or may make. Because forward-looking statements relate to future results and occurrences, they are subject to inherent uncertainties, risks, and changes in circumstances that are difficult to predict. Many possible events or factors could affect PPBI's future financial results and performance and could cause actual results or performance to differ materially from anticipated results or performance. These risks and uncertainties include, but are not limited to, the following: the strength of the United States economy in general and the strength of the local economies in which we conduct operations; recent adverse developments in the banking industry highlighted by high-profile bank failures and the potential impact of such developments on customer confidence, liquidity and regulatory responses to these developments; the effects of, and changes in, our ability to attract and retain deposits and access to other sources of liquidity; trade, monetary and fiscal policies and laws, including interest rate policies of the Board of Governors of the Federal Reserve System; interest rate, liquidity, economic, market, credit, operational and inflation/deflation risks associated with our business, including the speed and predictability of changes in these risks; the effect of acquisitions we have made or may make, including, without limitation, the failure to achieve the expected revenue growth and/or expense savings from such acquisitions, and/or the failure to effectively integrate an acquisition target into our operations; the timely development of competitive new products and services and the acceptance of these products and services by new and existing customers; the impact of changes in financial services policies, laws and regulations, including those concerning taxes, banking, securities and insurance, and the application thereof by regulatory bodies; compliance risks, including the costs of monitoring, testing, and maintaining compliance with complex laws and regulations; the effectiveness of our risk management framework and quantitative models; changes in the level of our nonperforming assets and charge-offs; risks and uncertainties related to our adoption of the SOFR family of interest rates to replace LIBOR; the effect of changes in accounting policies and practices or accounting standards, as may be adopted from time-to-time by bank regulatory agencies, the U.S. Securities and Exchange Commission ("SEC"), the Public Company Accounting Oversight Board, the Financial Accounting Standards Board or other accounting standards setters; possible credit related impairments of securities held by us; possible impairment charges to goodwill, including any impairment that may result from increasing volatility in our stock price; the impact of governmental efforts to restructure the U.S. financial regulatory system, including any amendments to the Dodd-Frank Wall Street Reform and Consumer Protection Act; recent or future changes in the FDIC insurance assessment rate; changes in consumer spending, borrowing and savings habits; the effects of our lack of a diversified loan portfolio, including the risks of geographic and industry concentrations; the possibility that we may reduce or discontinue the payments of dividends on our common stock; the possibility that we may discontinue, reduce or limit repurchases of common stock; changes in the financial performance and/or condition of our borrowers; changes in the competitive environment among financial and bank holding companies and other financial service providers; geopolitical conditions, including acts or threats of terrorism, actions taken by the United States or other governments in response to acts or threats of terrorism and/or military conflicts, including the war between Russia and Ukraine, which could impact business and economic conditions in the United States and abroad; public health crises and pandemics, including the COVID-19 pandemic, and their effects on the economic and business environments in which we operate, including on our credit quality and business operations, as well as the impact on general economic and financial market conditions; climate change, including regulatory, compliance and credit and reputational risks; cybersecurity threats and incidents, and related potential costs and risks, including reputation, financial and litigation risks, natural disasters, earthquakes, fires and severe weather; unanticipated regulatory or legal proceedings; and our ability to manage the risks involved in the foregoing. Additional factors that could cause actual results to differ materially from those expressed in the forward-looking statements are discussed in the Company's 2022 Annual Report on Form 10-K and other filings filed with the SEC and available at the SEC's Internet site (http://www.sec.gov).

The Company undertakes no obligation to revise or publicly release any revision or update to these forward-looking statements to reflect events or circumstances that occur after the date on which such statements were made.

Non-U.S. GAAP Financial Measures

This presentation contains non-U.S. GAAP financial measures. For purposes of Regulation G promulgated by the SEC, a non-U.S. GAAP financial measure is a numerical measure of the registrant's historical or future financial performance, financial position or cash flows that excludes amounts or is subject to adjustments that have the effect of excluding amounts that are included in the most directly comparable measure calculated and presented in accordance with U.S. GAAP in the statement of income, statement of financial condition or statement of cash flows (or equivalent statements) of the issuer; or includes amounts, or is subject to adjustments that have the effect of including amounts, that are excluded from the most directly comparable measure so calculated and presented in this regard. U.S. GAAP refers to generally accepted accounting principles in the United States. Pursuant to the requirements of Regulation G, PPBI has provided reconciliations within this presentation, as necessary, of the non-U.S GAAP financial measures to the most directly comparable U.S. GAAP financial measures. For more details on PPBI's non-U.S. GAAP measures, refer to the Appendix in this presentation.

© 2023 Pacific Premier Bancorp, Inc. | All rights reserved

2

PPBI RELEVANT UPDATES AND

DISCLOSURES

• We continued to enhance our ESG disclosures and provided more detailed information in the most recent Corporate Social Responsibility Report

Links to Key Disclosures and Updates:

• Investor website -https://investors.ppbi.com/corporate-profile/default.aspx
• 2022 Corporate Social Responsibility Report-https://investors.ppbi.com/corporate-social-responsibility/2022-csr-report/default.aspx
• Links to various ESG relevant policies and documents-https://investors.ppbi.com/corporate-social-responsibility/policies-and-documents/default.aspx
• Link to additional Corporate Governance Documents -https://investors.ppbi.com/corporate-overview/documents/default.aspx
• Certain SEC filings include additional relevant ESG information in the proxy statement and Form 10-Ks-https://investors.ppbi.com/sec-filings/documents/default.aspx

Most Recent SEC Filings and Key Disclosures

• 1Q23 10-Q(4/28/23) -https://investors.ppbi.com/sec-filings/documents/sec-filings-details/default.aspx?FilingId=16599619
• 2Q23 Earnings Call Replay (7/27/23) -https://investors.ppbi.com/news-webcast/webcasts/default.aspx
• 2Q23 Earnings Release (8-Kfiling, 7/27/23) -https://investors.ppbi.com/news-webcast/press-releases/default.aspx
• 2Q23 Investor Presentation (8-Kfiling, 7/27/23), for certain updates to ESG-relateddisclosures - refer to PPBI Culture & ESG on pages 31-34 in the pdf version found herehttps://s25.q4cdn.com/825120303/files/doc_earnings/2023/q2/presentation/Pacific-Premier-Bancorp-Q2-2023-v-Dist.pdf
• Additional Corporate Responsibility pages on the Bank's website -https://www.ppbi.com/corporate-responsibility/index.html

© 2023 Pacific Premier Bancorp, Inc. | All rights reserved

3

PACIFIC PREMIER BANCORP, INC.

Premier commercial bank in key metropolitan areas throughout the Western U.S.

Corporate Overview & Market Data

Branch Network	58 Full Service Branch Locations
Market Capitalization(1)	$2.3 Billion
Dividend Yield(1)	5.45%
P/TBV(1)	1.24x

2Q23 Financial Highlights

Balance Sheet and Capital Ratios(2)	Profitability and Credit Quality(2)
Assets	$20.7 billion	ROAA	1.09%
Loans HFI(4)	$13.7 billion	PPNR ROAA(3)	1.52%
TCE / TA(3)	9.59%	Efficiency Ratio(3)	54.1%
Tier 1 Capital Ratio	14.34%	NPA / Assets	0.08%
Total Capital Ratio	17.24%	ACL / Loans	1.41%

1. Market data as of July 26, 2023
2. As of June 30, 2023 or for the three months ended June 30, 2023
3. Please refer to non-U.S. GAAP reconciliation in the appendix
4. Excludes the basis adjustment associated with the application of hedge accounting on certain loans

© 2023 Pacific Premier Bancorp, Inc. | All rights reserved

Pacific Premier Footprint

Pacific
Northwest	9
Seattle MSA (8)
Other Washington (1)	1
Portland MSA (1)
Nevada
Las Vegas (1)
Central Coast
California	1
San Luis Obispo (7)
9
Santa Barbara (2)
Southern	35
California	3
Los Angeles-Orange (21)
San Diego (5)
Riverside-San Bernardino (9)
Arizona
Phoenix (1)
Tucson (2)
	4

KEY INVESTMENT HIGHLIGHTS

Financial Performance

• Strong pre-provision net revenue generation
• Enhanced fee income sources that diversify revenues
• Leveraging relationship-focused business model in the current unprecedented rising interest rate environment where deposit balances and funding costs are pressured
• Excellent asset quality metrics and better-than-peer average credit losses and nonperforming loans(1)

Attractive

Franchise

Value

• One of the premier commercial bank franchises in the Western U.S.
• Benefits from strength and size of attractive Western U.S. markets
• Consistent investment, development and deployment of technology
• Comprehensive product offering targeting small & middle-market businesses

Prudent Risk	• Experienced credit personnel take proactive approach to credit risk management - disciplined approach to
new originations along with better-than peer asset quality
Management
• Strategic balance sheet actions mitigate interest rate risk in current environment
	• Management team, on average, has over 25 years of banking experience
Experienced	• Continuous strengthening and improvement of executives, senior managers, and personnel
Management	• Deep in-market relationships drive client-focused business model
	• Proven track record of creating shareholder value

Strong &

Regularly

Refreshed Board

• Strong culture with best-in-class governance
• Six independent directors have been added since 2019, with 45% of independent directors demonstrating gender or ethnic diversity at 12/31/2022
• Full Board responsible for overseeing our ESG and corporate social responsibility efforts

1. Peer group consists of Western region banks and thrifts with total assets between $5 billion and $71 billion as of March 31, 2023
© 2023 Pacific Premier Bancorp, Inc. | All rights reserved	5