Investor Presentation Second Quarter 2024 Results Draft v4.5 1/21/24

Forward Looking Statements This presentation includes forward-looking statements within the meaning of the “Safe-Harbor” provisions of the Private Securities Litigation Reform Act of 1995. These statements include, but are not limited to, statements related to our expectations regarding the performance of our business, liquidity and capital ratios and other non-historical statements. Words or phrases such as “believe,” “will,” “should,” “will likely result,” “are expected to,” “will continue,” “is anticipated,” “estimate,” “project,” “plans,” “strategy,” or similar expressions are intended to identify these forward-looking statements. You are cautioned not to place undue reliance on any forward-looking statements. These statements are necessarily subject to risk and uncertainty and actual results could differ materially from those anticipated due to various factors, including those set forth from time to time in the documents filed or furnished by Banc of California, Inc. (the “Company”) with the Securities and Exchange Commission (“SEC”). 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, except as required by law. Factors that could cause actual results to differ materially from the results anticipated or projected include, but are not limited to: (i) changes in general economic conditions, either nationally or in our market areas, including the impact of supply chain disruptions, and the risk of recession or an economic downturn; (ii) changes in the interest rate environment, including the recent and potential future changes in the FRB benchmark rate, which could adversely affect our revenue and expenses, the value of assets and obligations, the realization of deferred tax assets, the availability and cost of capital and liquidity, and the impacts of continuing inflation; (iii) the credit risks of lending activities, which may be affected by deterioration in real estate markets and the financial condition of borrowers, and the operational risk of lending activities, including the effectiveness of our underwriting practices and the risk of fraud, any of which may lead to increased loan delinquencies, losses, and non-performing assets, and may result in our allowance for credit losses not being adequate; (iv) fluctuations in the demand for loans, and fluctuations in commercial and residential real estate values in our market area; (v) the quality and composition of our securities portfolio; (vi) our ability to develop and maintain a strong core deposit base, including among our venture banking clients, or other low cost funding sources necessary to fund our activities particularly in a rising or high interest rate environment; (vii) the rapid withdrawal of a significant amount of demand deposits over a short period of time; (viii) the costs and effects of litigation; (ix) risks related to the Company’s acquisitions, including disruption to current plans and operations; difficulties in customer and employee retention; fees, expenses and charges related to these transactions being significantly higher than anticipated; and our inability to achieve expected revenues, cost savings, synergies, and other benefits; and in the case of our recent acquisition of PacWest Bancorp (“PacWest”), reputational risk, regulatory risk and potential adverse reactions of the Company's or PacWest's customers, suppliers, vendors, employees or other business partners; (x) results of examinations by regulatory authorities of the Company and the possibility that any such regulatory authority may, among other things, limit our business activities, restrict our ability to invest in certain assets, refrain from issuing an approval or non-objection to certain capital or other actions, increase our allowance for credit losses, result in write-downs of asset values, restrict our ability or that of our bank subsidiary to pay dividends, or impose fines, penalties or sanctions; (xi) legislative or regulatory changes that adversely affect our business, including changes in tax laws and policies, accounting policies and practices, privacy laws, and regulatory capital or other rules; (xii) the risk that our enterprise risk management framework may not be effective in mitigating risk and reducing the potential for losses; (xiii) errors in estimates of the fair values of certain of our assets and liabilities, which may result in significant changes in valuation; (xiv) failures or security breaches with respect to the network, applications, vendors and computer systems on which we depend, including due to cybersecurity threats; (xv) our ability to attract and retain key members of our senior management team; (xvi) the effects of climate change, severe weather events, natural disasters, pandemics, epidemics and other public health crises, acts of war or terrorism, and other external events on our business; (xvii) the impact of bank failures or other adverse developments at other banks on general depositor and investor sentiment regarding the stability and liquidity of banks; (xviii) the possibility that our recorded goodwill could become impaired, which may have an adverse impact on our earnings and capital; (xix) our existing indebtedness, together with any future incurrence of additional indebtedness, could adversely affect our ability to raise additional capital and to meet our debt obligations; (xx) the risk that we may incur significant losses on future asset sales; and (xxi) other economic, competitive, governmental, regulatory, and technological factors affecting our operations, pricing, products and services and the other risks described in our Annual Report on Form 10-K for the fiscal year ended December 31, 2023 and from time to time in other documents that we file with or furnish to the SEC. Second Quarter 2024 Earnings | 2

California’s premier commercial bank with a national reach and select specialty business lines California Focused National Presence & Specialty Businesses Fresno Monterey Kings Tulare Kern San Luis Obispo Santa Barbara Ventura Los Angeles San Bernardino Riverside Orange San Diego THE 3rd LARGEST BANK HEADQUARTERED IN CALIFORNIA1 Specialty Bank Office Community Banking Branches Top 5 California Counties County Rank(2) Dep. ($bn) Orange 1 $13.1 Los Angeles 3 11.1 San Diego 1 1.9 San Bernardino 2 0.8 Riverside 3 0.8 HQ (Los Angeles) Branches Fund Finance HOA Lender & Specialty Finance Media & Entertainment Mortgage Warehouse Lending Payments Solutions SBA Technology & Life Sciences Menlo Park Orange County Los Angeles Denver San Diego Austin Atlanta Chicago Boston New York Chevy Chase Durham Phoenix Santa Barbara Ranked by assets. Ranked by banks headquartered in California by deposit market share. Source: S&P Capital IQ. Second Quarter 2024 Earnings | 3

Key Investor Takeaways Second Quarter 2024 Earnings | 4 Solid progress in 2Q as we head towards sustainable growth and profitability 2024 is a transformational year for our company as we take targeted actions to strengthen and optimize our balance sheet We improved our core fundamentals, despite a challenging economic and rate environment NIM expansion of 14bps to 2.80% Average NIB balances up 3% QoQ Total expenses decreased partially driven by a reduction in compensation from lower headcount On July 18 we completed the sale of $1.95B CIVIC loans Sale will positively impact capital, liquidity and NIM The liquidity and capital created will be used to reposition the balance sheet to optimize core earnings power in 2H24 Profitability expected to improve as we progress through the year due to core earnings drivers; well positioned to take advantage of a lower rate environment Improvement in core results with NIM expanding to 2.80% driven by lower funding costs and higher loan yields. Average NIB balances up 3% QoQ NII was slightly higher this quarter despite our deliberate decision to shrink balance sheet as we paid down most of BTFP Continued efforts to restructure balance sheet and improve profitability, including sale of $1.95B CIVIC loan portfolio Will continue to execute on additional strategic opportunities to further optimize the balance sheet Expect operating expenses to decline in 2H24 as cost synergies continue 2Q24 expenses included non-recurring reversal of merger expense accrual and elevated FDIC and customer related expenses Repositioning balance sheet to lower funding costs, including $1B paydown of BTFP in 2Q Balance sheet well-positioned for declining rate environment Heightened monitoring for stress in credit portfolio; maintaining strong reserve levels After quarter-end, core systems conversions and integration successfully completed, enabling new product and digital capabilities for clients Conducted extensive training and communication campaigns to ensure a seamless transition for our clients

We are transforming the combined franchise to drive long-term growth and shareholder value Second Quarter 2024 Earnings | 5 Current state Repositioning for success Near-term focus Generating profitable growth Future state Top-tier target performance Reposition to right-size balance sheet and optimize yields Optimize deposit mix and reduce cost of funds Leverage CIVIC sale to improve earnings power and profitability Consider further strategic options Achieve cost targets Ensure strong credit quality Heightened monitoring for stress in portfolios Maintain strong reserve levels Expand and deepen customer relationships Drive relationship-based deposit and loan growth Optimize deposit mix with strong focus on NIB growth Repricing of maturing / prepaying loan book to current market rates Maintain expense and credit discipline Consistent high-quality earnings performance versus peers Robust liquidity and strong capital levels Financial performance targets: ROAA ~1.1%+ ROTCE ~13%+

Denotes a non-GAAP financial measure; see “Non-GAAP Reconciliation” slides at end of presentation. Operating Results PTPP(1) EPS ROAA ROATCE(1) NIM $52.4mm $0.12 0.33% 4.3% 2.66% Cash / assets Loans / deposits Deposits / total funding Avg. NIB deposits / avg. deposits Balance Sheet Results 8.6% 88.4% 93.1% 26.1% Increasing Capital CET 1 capital ratio Total risk-based capital ratio BVPS TBVPS(1) 10.1% 16.4% $17.13 $15.03 Strong Credit Reserves ACL/NPLs NPA ratio 220% 0.44% 2Q24 Financial Highlights Second Quarter 2024 Earnings | 6 Growth in pre-tax pre-provision earnings power driven by continued balance sheet repositioning and merger synergies Continued increase in PTPP(1) due to NIM expansion and compensation expense savings NIM expansion of 14 bps driven by lower deposit costs, reduced reliance on wholesale funding and improved loan yields $1.95B of CIVIC loans moved to held-for-sale (“HFS”) Loans / deposits ratio improved to 87.4% from 88.4% Average NIB deposits increased from 26.1% to 27.4% of average deposits Nonperforming credit metrics improvement driven by reclassification of CIVIC loans to HFS $55.6mm $0.12 0.34% 4.1% 2.80% 7.7% 87.4% 95.2% 27.4% 10.3% 16.6% $17.23 $15.07 235% 0.37% 2Q24 1Q24

2Q24 Earnings Results 1Q24 2Q24 -6 bps 1Q24 2Q24 -2 bps 1Q24 2Q24 -7 bps Cost of funds Cost of deposits Cost of interest-bearing deposits Second Quarter 2024 Earnings | 7 Denotes a non-GAAP financial measure; see “Non-GAAP Reconciliation” slides at end of presentation. Return on average assets (“ROAA”) calculated as follows: annualized net earnings (loss) divided by average assets. Return on average tangible common equity (“ROATCE”) calculation as follows: annualized adjusted net earnings (loss) available to common and equivalent stockholders for ROATCE divided by average tangible common equity. Net interest income of $229.5mm increased slightly QoQ: Interest income declined due to smaller balance sheet Interest expense declined due to $1.0B repayment of BTFP and due to higher average NIB deposits Noninterest income declined due to negative fair value marks on credit-linked notes and SBIC equity investments Total expenses included multiple non-recurring or elevated items (see appendix) QoQ decline partially driven by decline in compensation expense Elevated tax rate of 32% mostly related to non-recurring equity compensation expense adjustment

Denotes a non-GAAP financial measure; see “Non-GAAP Reconciliation” slides at end of presentation. Wholesale funding defined as borrowings plus brokered time deposits. Balance Sheet Repositioning Continues Increased balance sheet efficiency with improved deposit mix and lower wholesale funding Balance sheet reduction due to use of excess liquidity to pay down high-cost wholesale funding CIVIC loans of $1.95B reclassified to HFS at June 30th in anticipation of the July 18th sale Deposit mix shift in favor of noninterest-bearing deposits Decrease in borrowings largely driven by repayment of $1.0B of BTFP Second Quarter 2024 Earnings | 8 Highlights

Management Outlook 2024 outlook focused on improving core earnings drivers and strengthening balance sheet Continue executing on plan to lower cost of funds and expand net interest margin Laser focused on controllable levers, including prudent expense and credit discipline 2024 outlook assumes one rate cut through the remainder of the year Continue to evaluate additional opportunities to optimize the balance sheet Second Quarter 2024 Earnings | 9 NIM of 2.90% to 3.00% Cost of funds expected to decline 20bps to 25bps Balance sheet repositioning, higher average NIB deposits and other actions driving lower interest expense Assumes one 25 bps rate cut in mid-November 4Q24 NIE expected at ~$195mm-$200mm Expect cost savings in 2H24 driven primarily by merger related synergies and other cost initiatives in addition to lower regulatory assessments Wholesale funding ratio 10-12% Loan / deposits 85%-90% NIB / deposits 28%-29% Balance sheet size may vary based on execution of opportunities to further optimize balance sheet Liquidity generated from CIVIC sale used primarily to pay down wholesale funding sources

Interest Rate Sensitivity Rate-sensitive earning assets: 40%(1) $10.1 billion of loans are variable or reprice / mature within one year Over 99% of adjustable-rate loans with floors are eligible to reprice within one year Rate-sensitive liabilities: 76%(1) $14.2 billion of interest-bearing deposits, excluding CDs $6.6 billion of CDs that mature or reprice within one year $2.0 billion of borrowings and other(2) that mature or reprice within one year Well-positioned for declining rate environment 2.4% 6.3% 2Q24 2Q24 Rate-Sensitive Earning Assets Loans Years to Maturity/Repricing 6.7% 5.8% Variable Rate 1 Year 2 Years 3 - 5 Years >5 Years Loan Composition 2Q24 2Q24 Variable Rate Fixed Hybrid Rate-Sensitive Liabilities Rate sensitive defined as assets or liabilities that are variable rate or repricing/maturing within one year. Other includes TruPS. Second Quarter 2024 Earnings | 10 Interest-Bearing Deposits Borrowings Other Loans HFI + Leases Investment Securities Cash & Cash Equivalents

Net Interest Income and Net Interest Margin Expansion NIM expanded 14 bps to 2.80% NII increased $0.4mm driven by: Average interest-bearing deposits decreased $852mm and interest-bearing deposits costs decreased 2 bps: +$9mm Average borrowings decreased $879mm: +$8mm Loan yields increased 10 bps: +$3mm Securities balances and yields were relatively flat Lower cash balances: ($19mm) 2Q24 Highlights 1.69% $151.0 4Q23 2.66% $229.1 1Q24 2.80% $229.5 2Q24 Net Interest Income (NII) ($M) and Net Interest Margin (NIM) Impact to NII ($M) from cumulative change in yields, rates and mix 1Q24 +$8.7 Deposits +$7.8 Borrowings +$3.4 Loans -$0.5 Securities -$19.0 Cash / Other EA 2Q24 $229.1 $229.5 Lower funding costs and improved asset yields and mix drive NII and NIM expansion 2.15% $69.4 Dec ’23 2.69% $77.3 Mar ’24 2.83% $75.7 Jun ’24 NIM NII Quarter Month(1) Second Quarter 2024 Earnings | 11 June has one less day than December and March impacting NII approximately $2.5mm.

Excludes gain (loss) on sale of securities and loans. Excludes nonrecurring legal recovery of $7.6mm and elevated SBIC-related income distributions of $3.9mm. Illustrative fee income when excluding $2.4mm negative mark for Credit-Linked Notes and negative $3.2mm mark for equity CRA investments. Noninterest IncomeComposition Higher loan fees from higher loan originations more than offset lower deposit fees and lease equipment income driven by lower early lease buyouts Other income decline in 2Q24 relative to 1Q24 was driven mainly by the net impact of fair value marks Other income includes revenue from BOLI, warrants, fair value mark adjustments and other miscellaneous gains or losses 2Q24 Highlights 4Q23 1Q24 $1.2 2Q24 $34.0 $34.3(1) $28.7(1) Other Income Dividends and Gains on Equity Investments Leased Equipment Income Loan and Card Fees Deposit Fees ($ in millions) (1,2) Noninterest income remains consistent and reflects diversified fee sources excluding elevated mark-to-market adjustments in 2Q24 Second Quarter 2024 Earnings | 12 $34.3(1,3) 2Q24 includes negative marks of $2.4mm for Credit-linked Notes and $3.2mm for mark for equity CRA investments

Expenses Controllable expenses declined primarily due to lower compensation and occupancy costs driven by merger synergies Insurance & assessments remain elevated in 2Q24. 1Q24 FDIC expense included a $5mm reduction due to a prior period adjustment Headcount at June 30 down approximately 500 FTE to ~2,065 FTE since the merger announcement date Expect cost savings in 2H24 driven primarily by merger related synergies and other cost initiatives in addition to lower regulatory assessments 2Q24 Highlights Progress in reducing operating expenses expected to continue through remainder of the year (1) Second Quarter 2024 Earnings | 13 $251.8 of actual total operating noninterest expense and $283.5 million normalized expenses adjusted to include combined company expenses for a full quarter and adjust incentive compensation to target. 2Q24 Other expense includes a reversal of $12.7mm of acquisition, integration, and reorganization costs.

Funding Cost Reduction Actions NIB and IB deposit composition trends reflects results of balance sheet restructuring and post-merger community bank-focused strategy Lower deposit costs reflects the increased NIB % and actions taken to reduce IB deposit costs while the lower cost of funds also reflects the partial paydown of BTFP Post systems conversion, will amplify efforts to grow NIB deposit balances with new clients CIVIC loans sale completed on July 18 will accelerate strategy to pay down higher cost wholesale funding as it matures and replace it with lower-cost funding sources Highlights 4Q23 Improving Funding Mix(1) Ongoing interest expense reduction results from focused strategy to improve funding mix and reprice deposits lower 1Q24 2Q24 23.4% 25.3% 4.8% NIB Deposits Interest-bearing deposits Brokered CDs Borrowings 4Q23 2.66% 3.02% 1Q24 2Q24 Reduced Cost of Liabilities Excludes subordinated debt and accrued interest payable and other liabilities. Total cost of funds Total deposits % of Total Funding(1) Second Quarter 2024 Earnings | 14

Building a Strong Commercial Deposit Franchise NIB deposits stayed strong at 27.2% of total deposits and average NIB deposits grew 1.3% to 27.4% of total average deposits CIVIC loan sale proceeds will be used to pay down high cost deposits, which will further reduce deposits costs Average cost of funds declined, with spread against Fed funds rate widening 2Q24 Highlights Focus on relationship banking that generates low-cost commercial deposits Management has a track record of successful deposit strategy execution Average Fed Funds Rate Average Cost of Deposits 4Q23 1Q24 2Q24 CDs Brokered CDs Money Market & Savings Interest-bearing Checking Noninterest-bearing Checking Second Quarter 2024 Earnings | 15

NIB Deposit Growth Remains a Key Priority Enterprise-wide focus Deposit incentive programs, including competitions and leaderboards RM performance goals include specific NIB targets Ensure existing and new relationships have appropriate deposit balances with the bank Line of business-specific approach to NIB growth and new customer acquisition 2Q24 Highlights Consistently generating new noninterest-bearing business deposits from new relationships since 4Q23 merger close Deposit gathering engine designed to build low-cost deposit base Second Quarter 2024 Earnings | 16 $83.2 1Q24 $230.0 2Q24 Cumulative New Business NIB Relationships Cumulative New Business NIB Deposits from New Relationships

Diversified Loan Portfolio Lender finance loans moved to core portfolio with intent to grow this portfolio given attractive loan yields and credit quality; provides diversification to loan portfolio Core portfolio declined due to runoff in lower yielding multifamily and other CRE loans Core portfolio comprises 95% of total loans with low NPL and DQ ratios after moving $1.95B of CIVIC loans to held-for-sale Strong 2Q24 loan originations(1) of $1.0B compared to $0.7B in 1Q24 in a challenging rate and origination environment High-quality relationship-based core portfolio is well diversified with strong metrics Existing portfolios have strong credit quality Note: Wtd. Avg. Rate excludes loan fees and accretion. Second Quarter 2024 Earnings | 17 Includes commitments and fundings.

California-Centric CRE Portfolio Over 71% of total CRE portfolio located in California Total CRE has a low weighted average LTV of 61% Other Property Types includes mobile homes, self storage, gas stations, special use, school, place of worship and restaurants 2Q24 Highlights High quality CRE portfolio has low weighted-average LTV and high debt-service coverage ratio (DSCR) Total CRE is well diversified across multiple industries 1.6% Office Industrial Retail Hotel Health Facility Mixed Use Other Represents most recent appraisal or weighted-average LTV at origination. Note: CRE excludes government guaranteed CRE collateralized SBA loans. Total CRE comprises 57.8% of total loans and other CRE comprises 17.6% of total loans 84% of office collateral located in California, 7% in Colorado and 9% in other states Multifamily has a low average LTV and a strong DSCR coverage ratio of 1.66x NPLs are generally reserved based on individual evaluations Second Quarter 2024 Earnings | 18 Other CRE Composition

Asset Quality Ratios and Trends ACL coverage ratio of 1.19% reflects 4 bps increase from 1Q24 when excluding CIVIC Additional loss coverage from SFR credit-linked notes and purchase accounting marks 30-89 past due loans declined $150mm or 84% QoQ to $28mm Moving CIVIC loans to HFS drove $56mm of decline 90 day+ past due loans declined $2mm to $56mm Classified loans increased primarily from downgrades of rate sensitive loans with repricing risk in higher for longer rate environment Improved NPL and DQ metrics due to transfer of historically volatile CIVIC loans to HFS $256.8 1.15% 2Q23 $251.9 1.15% 3Q23 $311.3 1.22% 4Q23 $320.1 1.26% 1Q24 $275.3 1.19% 2Q24 ACL ACL / Total Loans HFI $104.9 0.47% 2Q23 $125.4 0.57% 3Q23 $74.3 0.29% 4Q23 $145.8 0.57% 1Q24 $117.1 0.50% 2Q24 NPLs NPLs / Total Loans HFI $211.9 0.95% 2Q23 $211.1 0.96% 3Q23 $228.4 0.90% 4Q23 $366.7 1.44% 1Q24 $415.5 1.79% 2Q24 Classified Loans Classified Loans / Total Loans HFI $119.8 0.54% 2Q23 $127.3 0.58% 3Q23 $144.2 0.57% 4Q23 $236.0 0.93% 1Q24 $83.8 0.36% 2Q24 Delinquent Loans Delinquent Loans / Total Loans HFI Delinquent Loans ($M) Classified Loans ($M) ACL / Total Loans ($M) Nonperforming Loans (NPLs) ($M) Note: Periods prior to 4Q23 represent PACW standalone. Second Quarter 2024 Earnings | 19

Credit Migration Note: CRE excludes government guaranteed CRE collateralized SBA loans. Nonperforming loans 1Q24 to 2Q24 walk Delinquent loans 1Q24 to 2Q24 walk Increase in “Classified” driven by migration of rate sensitive loans; however, low delinquency reflects stable underlying credit Lower NPLs primarily due to transfer of CIVIC loans to HFS Delinquent loans down sharply from transfer of CIVIC loans to the HFS portfolio and other core loans becoming current Classified loans increased primarily from downgrades of rate sensitive loans, including multifamily and CRE with repricing risk in higher for longer rate environment CRE portfolio exposure proactively mitigated through additional qualitative reserves, combined with low LTVs and personal guarantors Second Quarter 2024 Earnings | 20 Classified loans 1Q24 to 2Q24 walk

ACL coverage ratio remains robust subsequent to elevated charge-offs including impact of CIVIC Allowance for Credit Losses Walk ACL decreased due to charge-offs related to transfer of CIVIC loans to the HFS portfolio and charge-offs of other loans, which were largely CRE CRE loan charge-offs primarily driven by 2 office loans, which were largely previously reserved for Commercial loan charge-offs were idiosyncratic and not indicative of overall portfolio performance CIVIC portfolio historically carried a higher ACL. The ACL at 1Q24 ex-CIVIC would have been 1.15% compared to 1.19% at 2Q24 1.26% 1.19% ACL (3/31/24) CIVIC Charge-offs Transfer to HFS Other Charge-offs $11.0 Provision ACL (6/30/24) ($ in millions) Second Quarter 2024 Earnings | 21 2Q24 net charge-offs detail Total net charge-offs $(55.7) $25,473 $23,229 HFI Loans

Strong Capital Base CET 1 ratio of 10.27% inclusive of: Impact of fair value marks and merger expenses Special FDIC assessment Lower risk-weighted assets All regulatory capital ratios in excess of minimum “well-capitalized” levels Focus on building capital levels for strength and flexibility 1Q24 2Q24 Common Equity Tier 1 (CET 1) 1Q24 2Q24 Tangible Common Equity / Tangible Assets 2Q24 Highlights 1. Denotes a non-GAAP financial measure; see “Non-GAAP Reconciliation” slides at end of presentation. Second Quarter 2024 Earnings | 22

High-quality securities portfolio provides upside Securities Portfolio Detail Average securities yield was flat quarter over quarter Stable securities portfolio with significant repricing opportunity Portfolio Profile Composition Credit Rating Average Portfolio Balances & Yields 2% Private Label RMBS CLO Corporates Gov’t & AGC Munis 3% 0% 5% 1% AAA AA A BB BBB Not Rated $6.0 2.72% 4Q23 $4.7 2.92% 1Q24 $4.7 2.92% 2Q24 Average Balance ($ in billions) Yield 2Q24 Highlights Reflects fair value for AFS securities and amortized cost for HTM securities. Excludes $1.5 million loan loss reserve on HTM securities. Second Quarter 2024 Earnings | 23

High Level of Available Liquidity Total available primary liquidity of $4.6 billion, including unpledged AFS securities of $2.1 billion Total available primary and secondary liquidity of $16.9 billion Uninsured and uncollateralized deposits of $6.8 billion, which represents only 23.6% of total deposits Total available primary and secondary liquidity was 2.5x uninsured and uncollateralized deposits 2Q24 Highlights Maintain high levels of primary and secondary liquidity as prudent risk management (1) Net of haircut as of June 30, 2024. Second Quarter 2024 Earnings | 24

Appendix

Non-GAAP Financial Information Tangible assets, tangible equity, tangible common equity, tangible common equity to tangible assets, tangible book value per common share, return on average tangible common equity, pre-tax pre-provision, pre-goodwill impairment (“PTPP”) income, constitute supplemental financial information determined by methods other than in accordance with GAAP. These non-GAAP measures are used by management in its analysis of the Company's performance. Tangible assets and tangible equity are calculated by subtracting goodwill and other intangible assets from total assets and total stockholders’ equity. Tangible common equity is calculated by subtracting preferred stock, as applicable, from tangible equity. Return on average tangible common equity is calculated by dividing net earnings available to common stockholders, after adjustment for amortization of intangible assets and goodwill impairment, by average tangible common equity. Banking regulators also exclude goodwill and other intangible assets from stockholders' equity when assessing the capital adequacy of a financial institution. PTPP income is calculated by adding net interest income and noninterest income (total revenue) and subtracting noninterest expense. Adjusted PTPP income is calculated by adding net interest income and adjusted noninterest income (adjusted total revenue) and subtracting adjusted noninterest expense. Management believes the presentation of these financial measures adjusting the impact of these items provides useful supplemental information that is essential to a proper understanding of the financial results and operating performance of the Company. This disclosure should not be viewed as a substitute for results determined in accordance with GAAP, nor is it necessarily comparable to non-GAAP performance measures that may be presented by other companies. Reconciliations of these measures to measures determined in accordance with GAAP are contained on slides 27-29 of this presentation. Second Quarter 2024 Earnings | 26

Non-GAAP Reconciliation Total common equity divided by common shares outstanding. Tangible common equity divided by common shares outstanding. Common shares outstanding include non-voting common equivalents that are participating securities. Second Quarter 2024 Earnings | 27 Note: Periods prior to 4Q23 represent PACW standalone.

Non-GAAP Reconciliation Effective tax rates of 32.0%, 27.2%, and 25.3% used for the three months ended June 30, 2024, March 31, 2024, and June 30, 2023, respectively. Annualized net (loss) earnings divided by average stockholders' equity. Annualized adjusted net (loss) earnings available to common stockholders for ROATCE divided by average tangible common equity. Second Quarter 2024 Earnings | 28 Note: Periods prior to 4Q23 represent PACW standalone.

Non-GAAP Reconciliation Second Quarter 2024 Earnings | 29 Note: Periods prior to 4Q23 represent PACW standalone.

Noteworthy items 2Q24 results included multiple noteworthy items, which impacted financial results, but were largely offset Revenue items higher than historical levels; driven by normal MTM accounting The identified expense and tax items (ex-FDIC) are related to either the merger or post-merger repositioning actions Acquisition cost reversal due to actual amounts for certain expenses being lower than the accrued amounts at merger close Elevated tax rate of 32% mostly related to non-recurring equity compensation expense adjustment FDIC expense impact reflects continued elevated assessment levels anticipated to decrease by the end of the year Second Quarter 2024 Earnings | 30

Execution on consolidation of vast majority of facilities Realize full operational expense savings Continued reduction of interest expense and improvement of deposit mix Integration roadmap update Items to be completed in 2H24 Closed merger with PacWest Closed on $400mm common equity with merger Retained key employees and clients Sold $6 billion assets (3.6% yield) Paid down $10 billion wholesale funding (~5% cost) Completed announced balance sheet restructuring and finalized plan for integration Partial cost savings realized Core systems conversions (completed July 18, 2024)       4Q+ 4Q+ 4Q+ Target Strong execution and achievement of deal closing timeline creates opportunity to complete integration and realize full cost savings in 2024  Accomplished since announcement of deal Second Quarter 2024 Earnings | 31 

Hamid Hussain President of the Bank 25+ years of banking experience, previously served as EVP, Real Estate Market Executive for Wells Fargo Olivia Lindsay Chief Risk Officer 20+ years of experience in regulatory processes and controls, previously spent 15 years at MUFG Union Bank Jared Wolff President and Chief Executive Officer 30+ years of banking and law. Previously held senior executive positions with City National Bank (RBC) and PacWest Bancorp John Sotoodeh Chief Operating Officer 30+ years of banking experience, previously held several key executive positions at Wells Fargo Monica Sparks Chief Accounting Officer 20+ years experience in accounting, previously served as EVP, Chief Accounting Officer at PacWest Bancorp Raymond Rindone Deputy Chief Financial Officer and Head of Corporate Finance 30+ years finance & public accounting experience, previously served as Deputy CFO of City National Bank (RBC) Joe Kauder Chief Financial Officer 30+ years banking experience, previously served as EVP, CFO Wells Fargo Wholesale Banking Bryan Corsini Chief Credit Officer 35+ years banking experience, previously served as CCO of PacWest Bancorp and Director of Pacific Western Bank Debbie Dahl-Amundson Chief Internal Audit Officer Leads the internal audit group and SOX Compliance, previously served as Assistant General Auditor for PNC Steve Schwimmer Chief Information Officer 25+ years of experience in banking technology, previously served as the EVP, Chief Innovation Officer at PacWest Bancorp Stan Ivie Head of Government and Regulatory Affairs Previously served as the Chief Risk Officer of PacWest Bancorp & the regional director for the FDIC’s San Francisco and Dallas Regions Experienced management team with track record of success at leading institutions Ido Dotan General Counsel and Chief Administrative Officer Experienced in corporate securities, M&A, and structured finance. Previously served as EVP of Carrington Mortgage Holdings Alex Kweskin Chief Human Resources Officer 25+ years of Human Resources experience, previously held HR leadership roles at MUFG Union Bank and Wells Fargo Second Quarter 2024 Earnings | 32