CNB FINANCIAL CORP/PA

Performance Ratios

•Annualized return on average equity was 12.09%, 12.65%, and 10.05% for the three months ended September 30, 2026, June 30, 2026 and September 30, 2025, respectively. Excluding the impact of merger transaction related expenses, annualized return on average equity was 11.86% for the three months ended September 30, 2025.1 Annualized return on average equity was 12.38% for the nine months ended September 30, 2026. Annualized return on average equity was 8.93% for the nine months ended September 30, 2025. Excluding the impact of merger transaction related expenses, annualized return on average equity was 9.99% for the nine months ended September 30, 2025.1

•Annualized return on average tangible common equity, a non-GAAP measure, was 14.39%, 15.20% and 12.03% for the three months ended September 30, 2026, June 30, 2026, and September 30, 2025, respectively.1 Excluding the impact of merger transaction related expenses, annualized return on average tangible common equity was 14.33% for the three months ended September 30, 2025.1 Annualized return on average tangible common equity was 14.84% for the nine months ended September 30, 2026. Annualized return on average tangible common equity was 10.13% for the nine months ended September 30, 2025. Excluding the impact of merger transaction related expenses, annualized return on average tangible common equity was 11.42% for the nine months ended September 30, 2025.1

•The Corporation's efficiency ratio was 58.21%, 57.86% and 64.56% for the three months ended September 30, 2026, June 30, 2026 and September 30, 2025, respectively, and 56.53%, 56.14% and 62.97%, 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% for the three months ended September 30, 2025.1 The linked-quarter increase, on a fully tax-equivalent basis, represented an increase of 39 basis points compared to June 30, 2026, primarily driven by higher 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 58.35% for the nine months ended September 30, 2026, and 56.65% on a fully tax-equivalent basis, a non-GAAP measure.1 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, a non-GAAP measure.1 Excluding merger and integration costs, the efficiency ratio on a fully tax-equivalent basis was 62.68% for the nine months ended September 30, 2025. The year-over-year decrease was primarily driven by higher net interest income, partially offset by higher non-interest expense.