The following is a summary of the amortized cost and fair value of securities available for sale.




	Amortized		Gross Unrealized				Fair
(In thousands)	Cost		Gains		Losses		Value
March 31, 2026
U.S. Treasuries	$	166,588	$	1,003	$	670	$	166,921
U.S. Government agency obligations		453,573		2,713		3,636		452,650
Residential mortgage-backed securities		143,923		101		7,849		136,175
Commercial mortgage-backed securities		266,269		978		1,586		265,661
Corporate investments		51,976		439		1,323		51,092
State and political subdivisions		60,126		294		1,070		59,350
Total available for sale	$	1,142,455	$	5,528	$	16,134	$	1,131,849

December 31, 2025
U.S. Treasuries	$	176,313	$	1,890	$	20	$	178,183
U.S. Government agency obligations		409,211		5,216		2,720		411,707
Residential mortgage-backed securities		131,440		529		7,102		124,867
Commercial mortgage-backed securities		213,209		1,674		570		214,313
Corporate investments		50,475		395		1,485		49,385
State and political subdivisions		56,746		474		887		56,333
Total available for sale	$	1,037,394	$	10,178	$	12,784	$	1,034,788

Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. For the three months ended March 31, 2026 and 2025, the Company realized losses on the sale of securities of zero. At March 31, 2026 and December 31, 2025, the Company had an allowance for credit losses on available for sale securities of zero.

Provided below is a summary of investment securities without an allowance for credit losses that were in an unrealized loss position and the length of time that individual securities have been in a continuous loss position.


	Less Than 12 Months				12 Months or More				Total
(In thousands)	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
March 31, 2026:
Available for sale:
U.S. Treasuries	$	81,697	$	670	$	—	$	—	$	81,697	$	670
U. S. Government agency obligations		110,301		844		41,478		2,792		151,779		3,636
Residential mortgage-backed securities		74,469		911		47,181		6,938		121,650		7,849
Commercial mortgage-backed securities		124,539		1,320		2,820		266		127,359		1,586
Corporate investments		7,973		27		24,225		1,296		32,198		1,323
States and political subdivisions		13,644		158		21,590		912		35,234		1,070
	$	412,623	$	3,930	$	137,294	$	12,204	$	549,917	$	16,134
Held to maturity:
States and political subdivisions	$	17,293	$	1,060	$	3,130	$	41	$	20,423	$	1,101
	$	17,293	$	1,060	$	3,130	$	41	$	20,423	$	1,101

December 31, 2025:
Available for sale:
U.S Treasuries	$	7,550	$	8	$	4,810	$	12	$	12,360	$	20
U. S. Government agency obligations		9,553		37		50,710		2,683		60,263		2,720
Residential mortgage-backed securities		23,659		269		51,188		6,833		74,847		7,102
Commercial mortgage-backed securities		54,855		306		2,827		264		57,682		570
States and political subdivisions		8,316		53		25,214		834		33,530		887
Corporate investments		3,515		6		26,541		1,479		30,056		1,485
	$	107,448	$	679	$	161,290	$	12,105	$	268,738	$	12,784
Held to maturity:
States and political subdivisions	$	—	$	—	$	3,804	$	45	$	3,804	$	45
	$	—	$	—	$	3,804	$	45	$	3,804	$	45

The number of debt securities in an unrealized loss position increased from 228 at December 31, 2025 to 339 at March 31, 2026. The unrealized losses shown above are due to increases in market rates over the yields available at the time of purchase of the underlying securities and not credit quality. The unrealized losses on debt securities have not been recognized into income because the Company does not intend to sell these securities and it is more likely than not that the Company will not be required to sell the investments before recovery of their amortized cost bases, which may be at maturity.

The amortized cost and fair value of debt securities, by contractual maturity, are shown below. Actual maturities may differ from contractual maturities because borrowers have the right to call or prepay certain obligations with, or without, call or prepayment penalties.


	Available for Sale				Held to Maturity
(In thousands)	Amortized		Fair		Amortized		Fair
March 31, 2026:	Cost		Value		Cost		Value
One year or less	$	75,761	$	75,886	$	9,292	$	9,022
After one through five years		624,316		623,259		10,395		9,890
After five through ten years		291,283		289,316		2,545		2,274
After ten years		151,095		143,388		345		292
	$	1,142,455	$	1,131,849	$	22,577	$	21,478

The Company monitors the credit quality of held-to-maturity debt securities through the use of credit ratings. The Company monitors the credit rating on a quarterly basis. The following table summarizes the amortized cost basis of held-to-maturity debt securities at March 31, 2026 by credit rating: