The changes in the net carrying value of goodwill by reportable segment for the nine months ended September 30, 2026 are as follows:


	Sealing Technologies		Advanced Surface Technologies		Total
	(in millions)
Goodwill as of December 31, 2025	$	532.6	$	532.2	$	1,064.8
Purchase accounting adjustments	1.3		—		1.3



Foreign currency translation	0.5		—		0.5

Goodwill as of September 30, 2026	$	534.4	$	532.2	$	1,066.6

The goodwill balances reflected above at September 30, 2026 are net of accumulated impairment losses of $27.8 million for the Sealing Technologies segment and $126.0 million for the Advanced Surface Technologies segment.


	September 30, 2026				December 31, 2025
	Gross Carrying Amount		Accumulated Amortization		Gross Carrying Amount		Accumulated Amortization
	(in millions)
Definite-Lived:
Customer relationships	$	559.8	$	254.2	$	568.7	$	241.0
Existing technology	611.3		220.2		596.8		186.9
Trademarks	80.3		46.3		80.5		41.9
Other	16.8		14.8		18.3		15.9
	1,268.2		535.5		1,264.3		485.7
Indefinite-Lived:
In-process research and development	—		—		14.0		—
Trademarks	30.9		—		30.9		—
Total	$	1,299.1	$	535.5	$	1,309.2	$	485.7

Amortization for the quarters and nine months ended September 30, 2026 and 2025 was $20.2 million, $18.8 million, $60.9 million, and $56.9 million, respectively.

In the third quarter of 2026, we commenced sales on the product line associated with the assets previously classified as indefinite-lived in-process research and development in our Sealing Technologies segment. These assets were acquired in our purchase of Advanced Micro Instruments ("AMI") in 2024. As a result, we have reclassified these assets to amortizing existing technology intangibles as of September 30, 2026 and began amortizing them during the quarter over a 15-year useful life.