Changes in the carrying amount of the Company’s goodwill and core deposit intangibles for the three months ended March 31, 2026, and the year ended December 31, 2025 were as follows:


	Goodwill			Core Deposit Intangibles
	(Dollars in thousands)
Balance as of December 31, 2024	$	3,503,129		$	66,047
Less:
Amortization		—			(14,442	)
Add:
Measurement period adjustment for the acquisition of Lone Star State Bancshares, Inc.		(2	)		—
Balance as of December 31, 2025		3,503,127			51,605
Less:
Amortization		—			(5,259	)
Add:
Acquisition of American Bank Holding Corporation		185,042			31,103
Acquisition of Southwest Bancshares, Inc.		134,114			33,794
Balance as of March 31, 2026	$	3,822,283		$	111,243

Goodwill is recorded as of the acquisition date of each entity. The Company may record subsequent adjustments to goodwill for amounts undeterminable at acquisition date, such as deferred taxes and real estate valuations, and therefore the goodwill amounts may change accordingly. The Company initially records the total premium paid on acquisitions as goodwill. After finalizing the valuation, core deposit intangibles are identified and reclassified from goodwill to core deposit intangibles on the balance sheet. This reclassification has no effect on total assets, liabilities, shareholders’ equity, net income or cash flows. Management performs an evaluation annually, and more frequently if a triggering event occurs, of whether any impairment of the goodwill or core deposit intangibles has occurred. If any such impairment is determined, a write-down is recorded. As of March 31, 2026, there was no impairment recorded on goodwill and core deposit intangibles.

The measurement period for the Company to determine the fair value of acquired identifiable assets and assumed liabilities will be at the end of the earlier of (1) twelve months from the date of acquisition or (2) as soon as the Company receives the information it was seeking about facts and circumstances that existed as of the date of acquisition.

Core deposit intangibles are being amortized on a non-pro rata basis over their estimated lives, which the Company believes is between 10 and 15 years. Amortization expense related to intangible assets totaled $5.3 million and $3.6 million for the three months ended March 31, 2026, and 2025, respectively. The estimated aggregate future amortization expense for core deposit intangibles remaining as of March 31, 2026, is as follows (dollars in thousands):


Remaining 2026	$	16,953
2027		20,254
2028		17,595
2029		14,233
2030		9,307
Thereafter		32,901
Total	$	111,243