v3.26.3
GOODWILL AND OTHER INTANGIBLE ASSETS
 9 Months Ended
Sep. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
GOODWILL AND OTHER INTANGIBLE ASSETS GOODWILL AND OTHER INTANGIBLE ASSETS
The following table presents the changes in the carrying amount of goodwill. See Note 3 to the consolidated financial statements for additional detail regarding acquisitions.
Three Months Ended
September 30,		Nine Months Ended
September 30,
(dollars in thousands)2026202520262025
Balance at beginning of period$2,429,756 $2,409,886 $2,425,700 $2,175,251 
Acquisitions and adjustments— 8,772 4,056 243,407 
Balance at end of period$2,429,756 $2,418,658 $2,429,756 $2,418,658 
Old National performed the required annual goodwill impairment test as of August 31, 2026 and there was no impairment. No events or circumstances since the August 31, 2026 annual impairment test were noted that would indicate it was more likely than not a goodwill impairment exists.
The gross carrying amounts and accumulated amortization of other intangible assets were as follows: 
(dollars in thousands)Gross
Carrying
Amount		Accumulated
Amortization
and Impairment		Net
Carrying
Amount
September 30, 2026
Core deposit$586,735 $(231,635)$355,100 
Customer relationship85,257 (31,017)54,240 
Total other intangible assets$671,992 $(262,652)$409,340 
December 31, 2025
Core deposit$586,735 $(166,160)$420,575 
Customer relationship93,892 (32,181)61,711 
Total other intangible assets$680,627 $(198,341)$482,286 
Other intangible assets consist of core deposit intangibles and customer relationship intangibles and are being amortized primarily on an accelerated basis over their estimated useful lives, generally over a period of 5 to 15 years.
Old National reviews other intangible assets for possible impairment whenever events or changes in circumstances indicate that carrying amounts may not be recoverable. No impairment charges were recorded during the nine months ended September 30, 2026 or 2025. Total amortization expense associated with intangible assets was $23.3 million and $72.9 million for the three and nine months ended September 30, 2026, respectively, compared to $26.2 million and $52.6 million for the three and nine months ended September 30, 2025, respectively.
Estimated amortization expense for future years is as follows:
(dollars in thousands)
2026 remaining$23,162 
202784,810 
202873,690 
202962,983 
203052,287 
Thereafter112,408 
Total$409,340