SIERRA BANCORP

Deposits represent another key balance sheet category impacting the Company’s net interest income and profitability metrics. Deposits provide liquidity to fund growth in earning assets, and the Company’s net interest margin is improved to the extent that growth in deposits is concentrated in less volatile and typically less costly non-maturity accounts such as demand deposit accounts, NOW accounts, savings accounts, and money market demand accounts. Information concerning average balances and rates paid by deposit type is included in the Average Balances and Rates tables appearing above, in the section titled “Net Interest Income and Net Interest Margin.” A distribution of the Company’s deposits by type, showing the period-end balance and percentage of total deposits, is presented as of the dates indicated in the following table.

Deposit Distribution

Deposit balances declined by $41.8 million, or 1%, during the first three months of 2025 to $2.8 billion at March 31, 2025 due mostly to an $85.0 million reduction in brokered deposits. Core non-maturity deposits increased $52.6 million, or 3%, for the first three months of 2025, while customer time deposits decreased by $9.4 million. Brokered deposits decreased significantly during the quarter, as the Company utilized some paydowns in the investment portfolio and changes in mortgage warehouse line utilization to offset recent brokered deposit maturities. Noninterest-bearing deposits as a percent of total deposits increased to 36.4% at March 31, 2025, compared to 34.8% at December 31, 2024, and from 34.0% at March 31, 2024.

Overall uninsured deposits are estimated to be $788.6 million, or 28% of total deposit balances, excluding public agency deposits that are subject to collateralization through a letter of credit issued by the FHLB. In addition, uninsured deposits of the bank’s customers are eligible for FDIC pass-through insurance if the customer opens an IntraFi Insured Cash Sweep account or a reciprocal time deposit through the Certificate of Deposit Account Registry System (CDARS). IntraFi allows for up to $275 million of combined pass-through FDIC insurance which would more than cover each of the Bank’s deposit customers if such customer desired to have such pass-through insurance. The Bank maintains a diversified deposit base with no significant customer concentrations and does not bank any cryptocurrency companies. At March 31, 2025, the Company had approximately 119,000 accounts and the 25 largest deposit balance customers had balances of less than 10% of overall deposits*.* Other interest-bearing liabilities of $198.8 million on March 31, 2025, consist of $118.8 million in customer repurchase agreements and $80.0 million of term FHLB borrowings, as compared to $108.9 million in customer repurchase agreements, and $80.0 million of term FHLB borrowings on December 31, 2024.