The following table shows the activity in goodwill and other intangible assets for the three-month periods ended March 31, 2026 and 2025.


(in thousands)	Goodwill		Core deposit intangible asset		Other intangible assets		Total
December 31, 2024	$	159,595	$	3,437	$	—	$	163,032
Amortization	—		274		—		274
March 31, 2025	$	159,595	$	3,163	$	—	$	162,758

December 31, 2025	$	159,595	$	2,395	$	—	$	161,990
Acquired goodwill and other intangible assets	103,829		34,440		3,585		141,854
Amortization	—		1,279		—		1,279
March 31, 2026	$	263,424	$	35,556	$	3,585	$	302,565

In past years, Park evaluated goodwill for impairment during the second quarter, with financial data as of the immediately prior March 31. To align the impairment analysis more closely with year-end, Park is moving its annual goodwill impairment testing to the fourth quarter. Based on the qualitative analysis performed as of April 1, 2025, the Company determined that goodwill for Park's reporting unit, PNB, was not impaired.

The following table shows the balance of acquired intangible assets at March 31, 2026 and at December 31, 2025:


	March 31, 2026				December 31, 2025
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
Other intangible assets:
Core deposit intangible asset	$	48,896	$	13,340	$	14,456	$	12,061
Customer relationship intangible asset	3,585		—		—		—
Total	$	52,481	$	13,340	$	14,456	$	12,061

The core deposit intangible asset and the customer relationship intangible asset are being amortized, on an accelerated basis, over a period of ten years. Aggregate amortization expense was $1.3 million and $274,000 for the three-month periods ended March 31, 2026 and 2025, respectively.

Estimated amortization expense related to core deposit intangible asset and the customer relationship intangible asset for the remainder of 2026 and the next four years follows:


(in thousands)	Core deposit intangible asset		Customer relationship intangible asset
Nine months ending December 31, 2026	$	5,349	$	598
2027	6,442		592
2028	5,679		527
2029	4,572		462
2030	3,809		397