v3.26.3
Goodwill and Other Intangible Assets (Tables)
 9 Months Ended
Sep. 30, 2026
Intangible Asset, Goodwill and Other [Abstract]  
Schedule of Goodwill
Changes to goodwill during the nine months ended September 30, 2026 were as follows:
(thousands of U.S. dollars)SterigenicsNordionNelson LabsTotal
Goodwill at December 31, 2025$658,919 $267,771 $176,542 $1,103,232 
Changes due to foreign currency exchange rates(1,551)(9,238)(1,226)(12,015)
Goodwill at September 30, 2026$657,368 $258,533 $175,316 $1,091,217 
Schedule of Acquired Finite-Lived Intangible Assets
Other intangible assets consisted of the following:
(thousands of U.S. dollars)
Gross Carrying
Amount
Accumulated
Amortization
As of September 30, 2026
Finite-lived intangible assets
Customer relationships$165,561 $91,663 
Proprietary technology36,470 19,975 
Trade names2,400 2,360 
Land-use rights9,246 2,584 
Sealed source and supply agreements162,876 94,452 
Other600 590 
Total finite-lived intangible assets377,153 211,624 
Indefinite-lived intangible assets
Regulatory licenses and other(a)
73,421 — 
Trade names / trademarks25,887 — 
Total indefinite-lived intangible assets99,308 — 
Total$476,461 $211,624 
As of December 31, 2025
Gross Carrying
Amount
Accumulated
Amortization
Finite-lived intangible assets
Customer relationships$167,313 $84,083 
Proprietary technology37,775 19,253 
Trade names2,400 2,000 
Land-use rights8,861 2,313 
Sealed source and supply agreements168,740 91,405 
Other900 790 
Total finite-lived intangible assets385,989 199,844 
Indefinite-lived intangible assets
Regulatory licenses and other(a)
76,064 — 
Trade names / trademarks26,018 — 
Total indefinite-lived intangible assets102,082 — 
Total$488,071 $199,844 
(a)Includes certain transportation certifications, a class 1B nuclear license and other intangible assets related to obtaining such licensure. These assets are considered indefinite-lived as the decision for renewal by the Canadian Nuclear Safety Commission (“CNSC”) is primarily based on a licensee’s previous assessments, reported incidents, and annual compliance and inspection results. New applications for a license can take a significant amount of time and cost; whereas an existing
licensee with a historical record of compliance and current operating conditions is generally expected to obtain renewal, as Nordion has demonstrated over its 75-year history. In September 2025, the CNSC renewed Nordion’s Class 1B nuclear license for a 25-year term.
Schedule of Acquired Indefinite-lived Intangible Assets
Other intangible assets consisted of the following:
(thousands of U.S. dollars)
Gross Carrying
Amount
Accumulated
Amortization
As of September 30, 2026
Finite-lived intangible assets
Customer relationships$165,561 $91,663 
Proprietary technology36,470 19,975 
Trade names2,400 2,360 
Land-use rights9,246 2,584 
Sealed source and supply agreements162,876 94,452 
Other600 590 
Total finite-lived intangible assets377,153 211,624 
Indefinite-lived intangible assets
Regulatory licenses and other(a)
73,421 — 
Trade names / trademarks25,887 — 
Total indefinite-lived intangible assets99,308 — 
Total$476,461 $211,624 
As of December 31, 2025
Gross Carrying
Amount
Accumulated
Amortization
Finite-lived intangible assets
Customer relationships$167,313 $84,083 
Proprietary technology37,775 19,253 
Trade names2,400 2,000 
Land-use rights8,861 2,313 
Sealed source and supply agreements168,740 91,405 
Other900 790 
Total finite-lived intangible assets385,989 199,844 
Indefinite-lived intangible assets
Regulatory licenses and other(a)
76,064 — 
Trade names / trademarks26,018 — 
Total indefinite-lived intangible assets102,082 — 
Total$488,071 $199,844 
(a)Includes certain transportation certifications, a class 1B nuclear license and other intangible assets related to obtaining such licensure. These assets are considered indefinite-lived as the decision for renewal by the Canadian Nuclear Safety Commission (“CNSC”) is primarily based on a licensee’s previous assessments, reported incidents, and annual compliance and inspection results. New applications for a license can take a significant amount of time and cost; whereas an existing
licensee with a historical record of compliance and current operating conditions is generally expected to obtain renewal, as Nordion has demonstrated over its 75-year history. In September 2025, the CNSC renewed Nordion’s Class 1B nuclear license for a 25-year term.
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense
The estimated aggregate amortization expense for finite-lived intangible assets for each of the next five years and thereafter is as follows:
(thousands of U.S. dollars)
For the remainder of 2026$5,422 
202720,623 
202820,076 
202919,966 
203019,966 
Thereafter79,476 
Total$165,529