September 12, 2023 2023 Third Quarter Investor Update

2 Forward-Looking Statements; Use of Non-GAAP Financial Measures Forward Looking Information This earnings presentation includes “forward-looking statements” as that term is defined in the Private Securities Litigation Reform Act of 1995. These statements, often accompanied by words such as “may,” “might,” “could,” “anticipate,” “expect,” and similar terms, are based on management’s current expectations and assumptions regarding future events or determinations, all of which are subject to known and unknown risks and uncertainties. Forward-looking statements are not guarantees, nor should they be relied upon as representing management’s views as of any subsequent date. Actual results and outcomes may differ materially from those presented. Although this list is not comprehensive, important factors that may cause material differences include the quality and composition of our loan and securities portfolios and the quality and composition of our deposits; changes in general industry, political and economic conditions, including continued high inflation, economic slowdown or recession, or other economic disruptions; changes in interest and reference rates which could adversely affect our revenue and expenses, the value of assets and obligations, and the availability and cost of capital and liquidity; deterioration in economic conditions that may result in increased loan and leases losses; securities and capital markets behavior, including volatility and changes in market liquidity and our ability to raise capital; the impact of bank failures or adverse developments at other banks on general investor sentiment regarding the stability and liquidity of banks; the possibility that our recorded goodwill could become impaired, which may have an adverse impact on our earnings and capital; our ability to recruit and retain talent, including increased competition for qualified candidates as a result of expanded remote-work opportunities and increased compensation expenses; competitive pressures and other factors that may affect aspects of our business, such as pricing and demand for our products and services; our ability to complete projects and initiatives and execute on our strategic plans, manage our risks, and achieve our business objectives; our ability to provide adequate oversight of our suppliers or prevent inadequate performance by third parties upon whom we rely for the delivery of various products and services; our ability to develop and maintain technology, information security systems and controls designed to guard against fraud, cybersecurity, and privacy risks; changes and uncertainties in applicable laws, and fiscal, monetary, regulatory, trade, and tax policies, and actions taken by governments, agencies, central banks and similar organizations, including increases in bank fees, capital standards, and other regulatory requirements; adverse media and other expressions of negative public opinion whether directed at us, other banks, the banking industry generally or otherwise that may adversely affect our reputation and that of the banking industry generally; the effects of pandemics and other health emergencies that may affect our business, employees, customers, and communities, such as ongoing effects on availability and cost of labor; the effects of wars and geopolitical conflicts, and other local, national, or international disasters, crises, or conflicts that may occur in the future; natural disasters that may impact our and our customer's operations and business; and governmental and social responses to environmental, social, and governance issues, including those with respect to climate change. Factors that could cause our actual results, performance or achievements, industry trends, and results or regulatory outcomes to differ materially from those expressed or implied in the forward-looking statements are discussed in our 2022 Form 10-K and subsequent filings with the Securities and Exchange Commission (SEC) and are available on our website (www.zionsbancorporation.com) and from the SEC (www.sec.gov). We caution against the undue reliance on forward-looking statements, which reflect our views only as of the date they are made. Except to the extent required by law, we specifically disclaim any obligation to update any factors or to publicly announce the revisions to any forward-looking statements to reflect future events or developments. Use of Non-GAAP Financial Measures: This document contains several references to non-GAAP measures, including but not limited to, pre-provision net revenue and the “efficiency ratio,” which are common industry terms used by investors and financial services analysts. Certain of these non-GAAP measures are key inputs into Zions’ management compensation and are used in Zions’ strategic goals that have been and may continue to be articulated to investors. Therefore, the use of such non-GAAP measures are believed by management to be of substantial interest to the consumers of these financial disclosures and are used prominently throughout the disclosures. A reconciliation of the difference between such measures and GAAP financials is provided within the document, and users of this document are encouraged to carefully review this reconciliation.

 Affiliate CEOs “own” their local market opportunities and challenges  One of only four banks to have averaged 15 or more Greenwich Excellence Awards since 2009  Roughly 2/3 of revenue from commercial customers  Best-in-class credit quality  0.09%: Net charge-offs in 2Q23; consistently among the lowest of peers Zions Is A Collection of Community Banks 3 Key Differentiators: Local decision-making and top-notch service, commercial banking focus, superior credit performance Source: S&P Global and internal data, as of 2Q23 except where noted. 1 June 30, 2023, ending balances. 2 Represents long-term debt / senior debt issuer rating, as of August 22, 2023. Key Metrics 2Q23 Listing NASDAQ: ZION Market Capitalization (as of 8/22/23) $5.2B Total Assets $87.2B Total Loans $56.9B Total Deposits $74.3B Common Equity Tier 1 Capital $6.7B Common Equity Tier 1 Capital Ratio 10.0% Zions Bancorp. Rating (S&P/Fitch/Kroll)2 BBB+ / BBB+ / A- Rating Outlook (S&P/Fitch/Kroll)2 Negative / Stable/ Positive Financial Highlights Zions’ Markets1 Bank Headquarters Ending Deposits % of Total Ending Loans % of Total Zions Bank Salt Lake City $19.4B 26% $15.2B 27% CB&T San Diego $14.0B 19% $13.7B 24% Amegy Houston $13.4B 18% $12.6B 22% NB│AZ Phoenix $7.0B 9% $5.0B 9% NSB Las Vegas $6.9B 9% $3.3B 6% Vectra Denver $3.4B 5% $3.9B 7% Commerce Seattle $1.2B 2% $1.5B 2% Brokered / Other — $9.1B 12% $1.7B 3% Zions Bancorporation Salt Lake City $74.3B 100% $56.9B 100%

Zions Consistently Receives National and Local Recognition for Excellence One of only four banks to have averaged 15 or more Greenwich Excellence Awards since 2009 Affiliates have strong brands in their markets 1 https://www.americanbanker.com/list/most-powerful-women-in-banking-top-teams-zions-bancorp; https://www.americanbanker.com/list/the-most-powerful-women- in-banking-2022; 2 The San Diego Union-Tribune (annually #1 from 2011-2022) and Orange County Register (annually #1 from 2014-2022); 3 Sixteen annual occurrences, Ranking Arizona Magazine; 4 Las Vegas Review-Journal, Reno Magazine and/or Reno Gazette-Journal, Elko Daily Free Press (annual winner since 2017); 5 https://topworkplaces.com/company/vectra-bank-colorado/, https://www.bcivic.org/the-civic-50-colorado Top Team of Women Bankers1 (2015-2020) Most Powerful Women in Banking (2022) National Bank of Arizona consistently voted #1 Bank in Arizona3 Nevada State Bank consistently voted #1 Bank in Nevada4 4 Consistently Voted Best Bank in San Diego and Orange Counties2 Business Services — Banking (17th consecutive year) Business Services — Mortgage Banking Community Development — Corporate Giving Community Development — Employer Vectra Bank Colorado voted a Top Workplace5