First Seacoast Bancorp, Inc. Debt Disclosure

Federal Home Loan Bank (“FHLB”)

All borrowings from the FHLB are secured by a blanket security agreement on qualified collateral, principally residential mortgage loans and commercial real estate loans, discounted by a certain percentage, in an aggregate amount greater than or equal to outstanding advances. The Bank’s unused remaining available borrowing capacity at the FHLB was $96.6 million and $94.0 million at December 31, 2025 and 2024, respectively. At December 31, 2025 and 2024, the Bank had sufficient collateral at the FHLB to support its obligations and was in compliance with the FHLB’s collateral pledging program.

Included in the above borrowings from the FHLB at December 31, 2025 and 2024 is a $25.0 million long-term advance, with an interest rate of 4.75%, which is callable by the FHLB on January 29, 2026 and quarterly thereafter. Also, included in the above borrowings from the FHLB at December 31, 2025 and 2024 is a $25.0 million long-term advance, with an interest rate of 4.38%, which is callable by the FHLB on March 6, 2026 and quarterly thereafter. As of December 31, 2025 and 2024, borrowings from the FHLB also include $2.3 million of advances through the FHLB’s Jobs for New England program where certain qualifying small business loans that create or preserve jobs, expand woman-, minority- or veteran-owned businesses, or otherwise stimulate the economy in New England communities are offered at an interest rate of 0%. At December 31, 2025 and 2024, the Bank had an overnight line of credit with the FHLB that may be drawn up to $3.0 million.

Federal Reserve Bank of Boston (“FRB”)

The Bank has a secured credit facility with the FRB – BIC Program. The Bank’s unused available borrowing capacity at the FRB was $34.1 million and $-0- at December 31, 2025 and December 31, 2024, respectively. Advances under the BIC, if any, are collateralized by eligible collateral. During December 2024, the Bank unpledged the collateral previously pledged to the BIC - principally general obligation municipal bonds – with the intention of pledging commercial real estate loans. On January 7, 2025, the Bank completed the collateral eligibility process with the FRB whereby the FHLB agreed to subordinate their interest in our commercial real estate loans up to a maximum of $65 million allowing these loans to be pledged to the BIC. The Bank subsequently pledged $65.0 million of its commercial real estate loans to the BIC resulting in $38.5 million of borrowing capacity under this credit facility as of January 16, 2025. On September 9, 2025, the FHLB agreed to increase the subordination of their interest in our commercial real estate loans up to a maximum of $71.7 million allowing these loans to be pledged to the BIC.

Correspondent Bank

At December 31, 2025 and 2024, the Bank had a $2.0 million unsecured Fed Funds borrowing line of credit with a correspondent bank. The entire balance of this credit facility was available at December 31, 2025 and 2024.