CDs at any time. Subsequent to quarter-end the Company called $100.7 million of its higher cost brokered CDs in order to reduce its cost of funds.
The Company’s deposit base consisted of 38.6% retail accounts, 33.3% commercial accounts, 19.7% municipal relationships and 8.4% brokered deposits at September 30, 2024. At September 30, 2024, total estimated uninsured deposits, were $1.6 billion, or approximately 33.8% of total deposits. Included in the uninsured total at September 30, 2024 is $372.5 million of municipal deposits collateralized by letters of credit issued by the FHLB and pledged investment securities, and $1.7 million of affiliate company deposits. We also offer customers access to IntraFi's CDARS and ICS programs through which their deposits may be allocated to separate FDIC-insured institutions, while they are able to maintain their relationship with the bank.
In addition to deposit gathering and current long-term debt, we have additional sources of liquidity available such as cash and cash equivalents, overnight borrowings from the FHLB, the Federal Reserve’s Discount Window and Borrower-in-Custody program, correspondent bank lines of credit, brokered deposit capacity and unencumbered securities. At September 30, 2024, the Company had $97.1 million in cash and cash equivalents, an increase of $63.6 million from December 31, 2023. At September 30, 2024, we had $2.2 billion in available additional liquidity representing 41.8% of total assets, 48.4% of total deposits and 143.1% of uninsured deposits. For additional information on the deposit portfolio and additional sources of liquidity, see the tables on page 17.
The Company maintained its well capitalized position at September 30, 2024. Stockholders' equity equaled $475.1 million or $47.53 per share at September 30, 2024, and $340.4 million or $48.35 per share at December 31, 2023. The increase in stockholders’ equity from December 31, 2023 is primarily attributable to the FNCB merger, net income less dividends to shareholders, partially offset by a $9.8 million decrease to accumulated other comprehensive loss (“AOCL”) resulting from a reduction in the unrealized loss on available for sale securities. The net after tax unrealized loss on available for sale securities included in AOCL at September 30, 2024 and December 31, 2023 was $28.6 million and $40.3 million, respectively.
Tangible book value1, a non-GAAP measure, decreased to $36.24 per share at September 30, 2024, from $39.35 per share at December 31, 2023. Dividends declared for the nine months ended September 30, 2024 amounted to $1.4375 per share.
ASSET QUALITY REVIEW
Nonperforming assets were $21.5 million or 0.53% of loans, net and foreclosed assets at September 30, 2024, compared to $4.9 million or 0.17% of loans, net and foreclosed assets at December 31, 2023. Nonperforming assets at September 30, 2024 included $7.6 million of loans acquired in the FNCB merger. As a percentage of total assets, nonperforming assets totaled 0.41% at September 30, 2024 compared to 0.13% at December 31, 2023. At September 30, 2024, the Company had one foreclosed property recorded at $27 thousand.
During the nine months ended September 30, 2024, net charge-offs were $158 thousand and the provision for credit losses totaled $15.8 million. The provision for credit losses included a $14.3 million FNCB merger related adjustment for non-PCD loans. The allowance for credit losses equaled $39.3 million or 0.97% of loans, net, at September 30, 2024 compared to $21.9 million or 0.77% of loans, net, at December 31, 2023. Loans charged-off, net of recoveries, for the three months ended September 30, 2024 were $82 thousand, compared to $42 thousand for the comparable period last year.
1See reconciliation of non-GAAP financial measures on pg.19-21.