
	Industrial Operations		Energy Operations		Manufacturing Operations		Total
	(In thousands)





Balance at December 31, 2025	$	7,541	$	1,449	$	16,800	$	25,790

Effect of foreign currency translation	—		—		(184)		(184)

Impairment losses	—		—		—		—
Balance at September 30, 2026	$	7,541	$	1,449	$	16,616	$	25,606


	September 30, 2026
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Book Value
		(In thousands)
Patents:
Intellectual property operations	5 years	$	368,153	$	(359,393)	$	8,760
Industrial operations	7 years	3,400		(2,419)		981
Total patents		371,553		(361,812)		9,741
Customer relationships:
Industrial operations	7 years	5,300		(3,771)		1,529
Manufacturing operations	15 years	21,814		(2,770)		19,044
Total customer relationships		27,114		(6,541)		20,573
Trade name and trademarks:
Industrial operations	7 years	3,430		(2,440)		990
Manufacturing operations	10 years	194		(78)		116
Manufacturing operations	Indefinite	8,316		—		8,316
Total trade name and trademarks		11,940		(2,518)		9,422
Developed technology - manufacturing operations	10 years	1,000		(195)		805
Favorable leases - manufacturing operations	1.9 years	419		(266)		153
Total		$	412,026	$	(371,332)	$	40,694


	December 31, 2025
	Weighted Average Amortization Period	Gross Carrying Amount		Accumulated Amortization		Net Book Value
		(In thousands)
Patents:
Intellectual property operations	5 years	$	366,402	$	(352,713)	$	13,689
Industrial operations	7 years	3,400		(2,055)		1,345
Total patents		369,802		(354,768)		15,034
Customer relationships:
Industrial operations	7 years	5,300		(3,203)		2,097
Manufacturing operations	15 years	21,830		(1,702)		20,128
Total customer relationships		27,130		(4,905)		22,225
Trade name and trademarks:
Industrial operations	7 years	3,430		(2,072)		1,358
Manufacturing operations	10 years	401		(49)		352
Manufacturing operations	Indefinite	8,043		—		8,043
Total trade name and trademarks		11,874		(2,121)		9,753
Developed technology - manufacturing operations	10 years	1,000		(120)		880
Favorable leases - manufacturing operations	1.9 years	705		(449)		256
Total		$	410,511	$	(362,363)	$	48,148

Total other intangible asset amortization expense in the consolidated statements of operations and comprehensive income (loss) was $2.3 million and $6.1 million for the three months ended September 30, 2026 and 2025, respectively, and $9.3 million and $17.8 million for the nine months ended September 30, 2026 and 2025, respectively. The Company did not record charges related to impairment of other intangible assets for the nine months ended September 30, 2026 and 2025. There was no accelerated amortization of other intangible assets for the nine months ended September 30, 2026 and 2025. Intellectual Property Operations amortization of patents was $1.5 million and $5.3 million for the three months ended September 30, 2026 and 2025, respectively, and $6.7 million and $15.2 million for the nine months ended September 30, 2026 and 2025, respectively. Intellectual Property Operations amortization of patents is expensed in cost of revenues. Industrial Operations amortization of intangible assets was $434,000 and $432,000 for the three months ended September 30, 2026 and 2025, and $1.3 million for the nine months ended September 30, 2026 and 2025. Manufacturing Operations amortization of intangible assets was $425,000 and $423,000 for the three months ended September 30, 2026 and 2025, respectively, and $1.3 million for the nine months ended September 30, 2026 and 2025. Industrial Operations and Manufacturing Operations amortization of intangible assets is expensed in general and administrative expenses.

On November 21, 2025, Deflecto sold certain specified assets exclusively used in its floor protection business, including contracts, customer lists, vendor lists, certain specified trademarks and patents and a specified list of equipment, pursuant to an asset purchase agreement. The total consideration was $2.99 million. The acquisition agreement provides for additional consideration in the form of an earnout, based on the achievement of specified revenue targets during the post-closing period. Because the amount of the obligation could not be reasonably estimated as of the acquisition date, no amount related to contingent consideration was included in the purchase price. The Company will recognize any contingent consideration as a gain in the period in which the contingency is resolved and the consideration becomes realizable. The carrying value of the disposed property, equipment and inventory was $1.5 million and trademarks and patents was $1.3 million. The Company recognized a loss on sale of $91,000 during the year ended December 31, 2025 included in other income (expense), net in the consolidated statements of operations and comprehensive income (loss).

During the year ended December 31, 2022, ARG entered into an agreement granting ARG the exclusive option to acquire all rights to license and enforce a patent portfolio and all future patents and patent applications, and incurred $15.0 million of certain patent and patent rights costs, which was fully paid in 2023. The patent costs were included in prepaid expenses and other current assets in the consolidated balance sheet as of December 31, 2024. During the year ended December 31, 2025, ARG exercised the option to acquire all rights to license and enforce the portfolio and capitalized $15.0 million in patent and patent rights costs. During the nine months ended September 30, 2026, ARG paid $1.8 million for additional rights in an existing patent portfolio.