XML 26 R13.htm IDEA: XBRL DOCUMENT v3.25.3
Investment Securities
 9 Months Ended
Sep. 30, 2025
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Investment Securities
Fair value of equity securities with readily determinable fair values at September 30, 2025 and December 31, 2024, are as follows:
(In thousands)Fair Value at Beginning of PeriodGains (Losses)Fair Value at End of Period
Nine Months Ended September 30, 2025
CRA Mutual Fund$919 $26 $945 
Twelve Months Ended December 31, 2024
CRA Mutual Fund$928 $(9)$919 
Amortized cost and fair value of investment securities were as follows:
(In thousands)Amortized
Cost		Gross
Unrealized
Gains		Gross
Unrealized
Losses		Fair
Value
September 30, 2025
Available for Sale    
U.S. Government and agencies$148,469 $— $10,696 $137,773 
Collateralized mortgage obligations54,782 182 2,489 52,475 
Residential mortgage-backed securities163,697 381 14,270 149,808 
Commercial mortgage-backed securities93,389 800 3,957 90,232 
State and municipal4,066 — 28 4,038 
Corporate bonds28,856 309 1,274 27,891 
$493,259 $1,672 $32,714 $462,217 
Held to Maturity
State and municipal$62,170 $— $6,442 $55,728 
Residential mortgage-backed securities1,238 — 34 1,204 
$63,408 $— $6,476 $56,932 
December 31, 2024    
Available for Sale
U.S. Government and agencies$159,799 $— $16,606 $143,193 
Collateralized mortgage obligations39,540 — 3,886 35,654 
Residential mortgage-backed securities159,349 2 20,811 138,540 
Commercial mortgage-backed securities65,350 — 4,565 60,785 
Corporate bonds17,600 — 1,797 15,803 
 $441,638 $2 $47,665 $393,975 
Held to Maturity
State and municipal$62,838 $— $7,586 $55,252 
Residential mortgage-backed securities1,740 — 68 1,672 
$64,578 $— $7,654 $56,924 
The following table shows the Corporation’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position, at September 30, 2025, and December 31, 2024:
 Less than 12 Months12 Months or MoreTotal
(In thousands)Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses		Fair
Value		Unrealized
Losses
September 30, 2025      
Available for Sale      
U.S. Government and agencies$— $— $137,773 $10,696 $137,773 $10,696 
Collateralized mortgage obligations4,538 31 33,012 2,458 37,550 2,489 
Residential mortgage-backed securities2,493 31 128,239 14,239 130,732 14,270 
Commercial mortgage-backed securities1,293 1 27,571 3,956 28,864 3,957 
State and municipal4,038 28 — — 4,038 28 
Corporate bonds— — 12,826 1,274 12,826 1,274 
$12,362 $91 $339,421 $32,623 $351,783 $32,714 
Held to Maturity
State and municipal$— $— $55,728 $6,442 $55,728 $6,442 
Residential mortgage-backed securities— — 1,204 34 1,204 34 
$— $— $56,932 $6,476 $56,932 $6,476 
December 31, 2024
Available for Sale      
U.S. Government and agencies$— $— $143,193 $16,606 $143,193 $16,606 
Collateralized mortgage obligations— — 35,654 3,886 35,654 3,886 
Residential mortgage-backed securities2,692 26 135,626 20,785 138,318 20,811 
Commercial mortgage-backed securities31,860 73 28,925 4,492 60,785 4,565 
Corporate bonds— — 15,803 1,797 15,803 1,797 
 $34,552 $99 $359,201 $47,566 $393,753 $47,665 
Held to Maturity
State and municipal$— $— $55,252 $7,586 $55,252 $7,586 
Residential mortgage-backed securities— — 1,672 68 1,672 68 
$— $— $56,924 $7,654 $56,924 $7,654 
All mortgage-backed securities, and those of a similar asset class, are government-sponsored enterprise pass-through instruments issued by the Federal National Mortgage Association or Federal Home Loan Mortgage Corporation or they are issued by the Government National Mortgage Association which is backed by the U.S. government which guarantees the timely payment of principal on these investments.
The Company evaluates AFS debt securities for impairment in unrealized loss positions at each measurement date to determine whether the decline in the fair value below the amortized cost basis is due to credit-related factors or noncredit-related factors. In estimating credit events, management considers whether it intends to sell the security or if it is more likely than not that it will be required to sell the security before anticipated recovery or if it does not expect to recover the entire amortized cost basis. There was no impairment on AFS debt securities as of September 30, 2025 and December 31, 2024. The Company evaluates HTM debt securities for expected credit losses at each measurement date to determine if an ACL is required. The Corporation did not have an ACL for HTM investment securities as of September 30, 2025 and December 31, 2024.
Amortized cost and fair value at September 30, 2025, by contractual maturity, where applicable, are shown below. Expected maturities will differ from contractual maturities because issuers may have the right to call or prepay with or without penalties. Securities not due at a single maturity date are shown separately below.
 Available for SaleHeld to Maturity
(In thousands)Amortized
Cost		Fair
Value		Amortized
Cost		Fair
Value
1 year or less$8,756 $8,720 $400 $393 
Over 1 year through 5 years135,684 128,082 4,640 4,320 
Over 5 years through 10 years32,885 28,863 37,322 35,153 
Over 10 years4,066 4,037 19,808 15,862 
Mortgage-backed securities311,868 292,515 1,238 1,204 
 $493,259 $462,217 $63,408 $56,932 
The proceeds from sales and calls of securities and the associated gains and losses are listed below:
Three Months Ended September 30,Nine Months Ended September 30,
(In thousands)2025202420252024
Proceeds from sales$— $— $98,272 $14,336 
Proceeds from calls2,000 — 14,322 1,984 
Gross gains— — 56 87 
Gross losses— — 34 18 
ACNB received $97.7 million in proceeds from the sale of Traditions’ investments subsequent to the Acquisition date.
At September 30, 2025 and December 31, 2024, securities with a carrying value of $200.0 million and $157.3 million, respectively, were pledged as collateral as required by law on public and trust deposits, repurchase agreements, and for other purposes.