The following table summarizes the goodwill movements in the year:


(in millions)	2025
Opening balance at January 1	$	382.5
Additions - Oilfield Services		2.0
Exchange effects
Performance Chemicals		15.1
Fuel Specialties		0.2
Closing balance at September 30	$	399.8

On July 31, 2025 the Company completed the acquisition of the trade and net assets of Biotechnology Solutions LLC. Biotechnology Solutions LLC is a manufacturer and supplier of biology-based solutions for completion, production and stimulation within Oilfield Services and is based in Oklahoma, USA. The trade and net assets and goodwill has been consolidated into our Oilfield Services business segment. The consideration includes a deferred portion, contingent on future results. The fair value of the consideration is immaterial and has initially resulted in recognition of goodwill of $2.0 million. The goodwill recognized is expected to be deductible for income tax purposes. We have completed our alignment of accounting policies and fair value review on the other net assets acquired.