Coastal Financial CCB Number of branches

As defined in ASC 280, Segment Reporting, an operating segment is a component of an enterprise that engages in business activities from which it may earn revenues and incur expenses, whose operating results are regularly reviewed by the enterprise’s chief operating decision makers (“CODM”) to make decisions about resources to be allocated to the segment and assess its performance, and for which discrete financial information is available. We evaluate performance based on classifications within accounting and reporting systems, which provides line of business results. This system uses various techniques to assign balance sheet and income statement amounts to the business segments, including allocations of income and expense. A primary objective of this measurement system and related internal financial reporting practices are to produce consistent results that reflect the underlying financial impact of the segments on the Company and to provide a basis of support for strategic decision making. The accounting policies applicable to our segments are those that apply to our preparation of the accompanying Consolidated Financial Statements. Based on these criteria, we have identified three segments: the community bank, CCBX, and treasury & administration. The Executive Leadership Team, which includes the CEO, Presidents, CFO and other key executive members, which the Company has designated as the CODMs, evaluates the financial performance of the Company’s segments by evaluating interest income and expense, noninterest income and significant expenses. The community bank segment includes all community banking activities. A primary focus of the community bank is on providing a wide range of banking products and services to consumers and small to medium sized businesses in the broader Puget Sound region in the state of Washington and through the Internet and our mobile banking application. We currently operate 14 full-service banking locations, 12 of which are located in Snohomish County, and two of which are located in neighboring counties (one in King County and one in Island County). We also have a loan production office which is located in King county. The CCBX segment provides BaaS that allows digital financial service providers, companies and brands to offer their customers banking services. The CCBX segment has 30 partners as of June 30, 2026. The treasury & administration segment includes investments, debt and other reporting items that are not specific to the community bank or CCBX segments.