Changes in the carrying amount and accumulated amortization of the Company’s goodwill and core deposits and other intangibles at March 31, 2026 and December 31, 2025, were as follows:


	March 31, 2026		December 31, 2025
	(In thousands)
Goodwill
Balance, beginning of period	$	1,398,253	$	1,398,253

Balance, end of period	$	1,398,253	$	1,398,253


	March 31, 2026		December 31, 2025
	(In thousands)
Core Deposit Intangibles
Balance, beginning of period, January 1	$	32,293	$	40,327

Amortization expense	(1,938)		(2,047)
Balance, March 31	$	30,355	38,280
Amortization expense			(5,987)
Balance, end of year			$	32,293

The carrying basis and accumulated amortization of core deposit intangibles at March 31, 2026 and December 31, 2025 were:


	March 31, 2026		December 31, 2025
	(In thousands)
Gross carrying basis	$	128,888	$	128,888
Accumulated amortization	(98,533)		(96,595)
Net carrying amount	$	30,355	$	32,293

Core deposit intangible amortization expense was approximately $1.9 million and $2.0 million for the three months ended March 31, 2026 and 2025, respectively. The Company’s estimated amortization expense of core deposits intangibles for each of the years 2026 through 2030 is approximately: 2026 – $7.8 million; 2027 – $6.6 million; 2028 – $4.2 million; 2029 – $4.2 million; 2030 - $4.2 million.

The carrying amount of the Company’s goodwill was $1.40 billion at both March 31, 2026 and December 31, 2025. Goodwill is tested annually for impairment during the fourth quarter or more often if events and circumstances indicate there may be an impairment. During the 2025 review, no impairment was found. If the implied fair value of goodwill is lower than its carrying amount, goodwill impairment is indicated, and goodwill is written down to its implied fair value. Subsequent increases in goodwill value are not recognized in the consolidated financial statements.