CNB FINANCIAL CORP/PA

Performance Ratios

•Annualized return on average equity was 3.60% and 8.83% for the three months ended September 30, 2025 and June 30, 2025, respectively. Excluding after-tax merger transaction related expenses, annualized return on average equity was 12.05% for the three months ended September 30, 2025, compared to 9.06%, excluding after-tax merger and integration costs, and 9.28% for the three months ended June 30, 2025 and September 30, 2024, respectively.1 Annualized return on average equity was 6.42% for the nine months ended September 30, 2025. Excluding after-tax merger transaction related expenses, annualized return on average equity was 10.05% for the nine months ended September 30, 2025, compared to 9.01% for the nine months ended September 30, 2024.1

•Annualized return on average tangible common equity, a non-GAAP measure, was 3.87% and 9.71% for the three months ended September 30, 2025 and June 30, 2025, respectively.1 Excluding after-tax merger transaction related expenses, annualized return on average tangible common equity was 14.62% for the three months ended September 30, 2025, compared to 9.98%, excluding after-tax merger and integration costs, and 10.33% for the three months ended June 30, 2025 and September 30, 2024, respectively.1 Annualized return on average tangible common equity was 7.08% for the nine months ended September 30, 2025. Excluding after-tax merger transaction related expenses, annualized return on average tangible common equity was 11.51% for the nine months ended September 30, 2025, compared to 10.01% for the nine months ended September 30, 2024.1

•The Corporation's efficiency ratio was 64.56% and 64.73% for the three months ended September 30, 2025 and June 30, 2025, respectively, and 62.97% and 64.08%, respectively, on a fully tax-equivalent basis, a non-GAAP measure.1 Excluding merger and integration costs, the efficiency ratio on a fully tax-equivalent basis was 57.67%, compared to 63.50% and 65.58% for the three months ended June 30, 2025 and September 30, 2024, respectively.1 The quarter-over-quarter decrease was primarily driven by higher net interest income and non-interest income, partially offset by increased non-interest expense, as further discussed below. The year-over-year decrease was primarily driven by an increase in net interest income, partially offset by an increase in non-interest expense. The Corporation's efficiency ratio was 66.80% for the nine months ended September 30, 2025, and 65.74% on a fully tax-equivalent basis.1 Excluding merger and integration costs, the efficiency ratio on a fully tax-equivalent basis was 62.68% for the nine moths ended September 30, 2025, compared to 66.34% for the nine months ended September 30, 2024.1 The year-over-year decrease was primarily driven by higher net interest income, partially offset by higher non-interest expense.