As of September 30, 2024 and December 31, 2023, we had pledged callable agency securities, residential government-sponsored mortgage-backed securities and collateralized mortgage obligations with a carrying value of $7.0 million and $6.8 million, respectively, to customers who require collateral for overnight repurchase agreements and deposits.
As of September 30, 2024, Primis Bank had lendable collateral value in the form of residential 1-4 family mortgages, HELOCs, commercial mortgage loans, and investment securities supporting borrowing capacity of approximately $565.9 million from the FHLB, of which the Company has used $165.0 million.
In June 2023, the Bank began participating in the Federal Reserve discount window borrowing program. As of September 30, 2024, the Bank had borrowing capacity of $752.0 million within the program and has not borrowed under the program.
In 2017, the Company assumed $10.3 million of trust preferred securities that were issued on September 17, 2003 and placed through a trust in a pooled underwriting totaling approximately $650 million. As of September 30, 2024 and December 31, 2023, there was $10.3 million outstanding, net of approximately $0.4 million and $0.5 million of debt issuance costs as of September 30, 2024 and December 31, 2023, respectively. As of September 30, 2024 and December 31, 2023, the interest rate payable on the trust preferred securities was 8.55% and 8.59%, respectively. As of September 30, 2024, all of the trust preferred securities qualified as Tier 1 capital.
On January 20, 2017, Primis completed the sale of $27.0 million of its fixed-to-floating rate senior Subordinated Notes due 2027. Interest is currently payable at an annual floating rate equal to three-month CME Term SOFR plus a tenor spread adjustment of 0.26% until maturity or early redemption. As of September 30, 2024, 40% of these Notes qualified as Tier 2 capital.
On August 25, 2020, Primis completed the sale of $60.0 million of its fixed-to-floating rate Subordinated Notes due 2030. Interest is payable at an initial annual fixed rate of 5.40% and after September 1, 2025, at a floating rate equal to a benchmark rate, which is expected to be Three-Month Term SOFR, plus a spread of 531 basis points. As of September 30, 2024, all of these notes qualified as Tier 2 capital.
As of September 30, 2024 and December 31, 2023, the remaining unamortized debt issuance costs related to the senior Subordinated Notes totaled $1.1 million and $1.2 million, respectively.
Secured Borrowings
The Company transferred $23.4 million in principal balance of loans to another financial institution in 2023 that were accounted for as secured borrowings and transferred another $1.1 million under the same agreement during the three months ended March 31, 2024. The balance of secured borrowings was $17.5 million and $20.4 million as of September 30, 2024 and December 31, 2023, respectively, and the remaining amortized cost balance of the underlying loans was $17.6 million and $20.5 million, respectively. None of the loans underlying the secured borrowings were past due 30 days or greater or on nonaccrual as of September 30, 2024 and December 31, 2023 and were all internally rated as “pass” loans as presented in our “credit quality indicators” section of “Note 3 – Loans and Allowance for Credit Losses”. The loans were included in our allowance for credit losses process and an allowance was calculated on the loans as part of their inclusion in a pool with other loans with similar credit risk characteristics. There were no charge-offs of the loans underlying the secured borrowings during the three or nine months ended September 30, 2024. The underlying loans collateralize the borrowings and cannot be sold or pledged by the Company.
8. STOCK-BASED COMPENSATION
The 2017 Equity Compensation Plan (the “2017 Plan”) has a maximum number of 750,000 shares reserved for issuance. The purpose of the 2017 Plan is to promote the success of the Company by providing greater incentives to employees, non-employee directors, consultants and advisors to associate their personal financial interests with the long-