SIERRA BANCORP

The Company’s non-deposit borrowings may, at any given time, include fed funds purchased from correspondent banks, borrowings from the FHLB, advances from the FRB, securities sold under agreements to repurchase, subordinated notes and/or junior subordinated debentures. The Company uses short-term FHLB advances and fed funds purchased on unsecured lines to support liquidity needs created by seasonal deposit flows, to temporarily satisfy funding needs from

increased loan demand, and for other short-term purposes. The FHLB line consists of both a secured and unsecured component. The secured component depends on the level of pledged collateral.

Total non-deposit interest-bearing liabilities increased by $9.9 million, during the first three months of 2025 primarily due to an increase in customer repurchase agreements.

Customer repurchase agreements were $118.8 million at March 31, 2025, as compared to $108.9 million at December 31, 2024. Customer repurchase agreements provide collateral for customers that sweep excess deposit balances each day into a separate repurchase agreement account where the Company sells certain government bonds to customers daily under an agreement to repurchases the same bonds on the next business day. Although these accounts are not deposits and are not FDIC insured, they provide customers with larger account balances the ability to have their account effectively secured with collateral.

Long-term debt at March 31, 2025, consisted of $49.4 million of subordinated debt. This remained relatively unchanged from December 31, 2024. Subordinated debentures related to $35.9 million of trust preferred securities at March 31, 2025, was $0.1 million higher than at December 31, 2024. The small increase resulted from the amortization of discount on junior subordinated debentures that were part of the Company’s acquisition of Coast Bancorp in 2016. Trust preferred securities are variable rate instruments benchmarked against the Secured Overnight Financing Rate (SOFR).