During the three months ended June 30, 2024, prior to the Spin-Off, the approval of the Spin-Off by Illumina’s board of directors represented a potential indicator of impairment, which also aligned with the timing of Illumina’s annual goodwill impairment test date for 2024. The assessment was performed using a market approach to determine the fair value of goodwill which utilized the valuation ranges prepared by the divestment financial advisors engaged by Illumina in connection with the Spin-Off. The valuation ranges were determined using revenue multiples from public company peers for comparable companies. The implied discount rate for the goodwill impairment assessment was 51.5%. These estimates and assumptions represent a Level 3 measurement because they include unobservable inputs that are supported by little or no market activity and reflect Company-determined and judgmental factors for these assumptions in measuring fair value. The assumptions in the assessment of an impairment analysis are inherently subjective due to uncertainty and any slight changes in these rates and assumptions could have a significant impact on the concluded value of goodwill. The Company recognized a goodwill impairment of $888.9 million as a result of the impairment assessment, primarily due to changes to the forecast of GRAIL’s value and the method for valuing GRAIL.


	As of
	September 30, 2025						December 31, 2024
(in thousands)	Gross Carrying Amount		Accumulated Amortization		Net Intangible Assets		Gross Carrying Amount		Accumulated Amortization		Net Intangible Assets
Developed Technologies	$	2,410,000	$	(546,713)	$	1,863,287	$	2,410,000	$	(446,297)	$	1,963,703
Trade Names	40,000		(18,147)		21,853		40,000		(14,813)		25,187
Total Finite-Lived Intangible Assets	$	2,450,000	$	(564,860)	$	1,885,140	$	2,450,000	$	(461,110)	$	1,988,890

In conjunction with Illumina’s Q2 2024 goodwill impairment assessment, the IPR&D intangible asset of the GRAIL reporting unit was evaluated for potential impairment by Illumina prior to the Spin-Off. The evaluation for a potential impairment of the IPR&D intangible asset was performed by comparing its carrying value to the assessed estimated fair value, which was determined by the income approach, using a discounted cash flow model. Estimates and assumptions used in the income approach included projected cash flows and a discount rate. The discount rate selected at the time of the IPR&D intangible impairment assessment prior to the Spin-Off was 46.5%. Based on the impairment test performed, Illumina assessed and determined that the carrying value of GRAIL’s IPR&D intangible asset exceeded its estimated fair value. As a result of push down accounting, the Company recognized an impairment of $420.0 million primarily due to changes to revenue projections and the discount rate utilized.

In Q2 2024, subsequent to the Spin-Off, the Company performed a portfolio review and determined to decrease investment in the development of the IPR&D asset, which impacted the amount and timing of expected future cash flows attributable to IPR&D. This determination was driven by the impact of the Company’s post-Spin-Off capital structure, constitution of the Company’s Board at the time of the Spin-Off as the key decision maker for the determination, and increased ability to revisit the Company’s business strategy and portfolio as a standalone public company without regulatory oversight. This represented a potential impairment indicator. An impairment assessment was performed using a discounted cash flow model utilizing the updated projected cash flows and discount rate. The discount rate selected was 20%. Based on the impairment test performed, the Company assessed and determined that the carrying value of the IPR&D intangible asset exceeded its estimated fair value. As a result, the Company recognized an additional impairment of $112.0 million, primarily due to a decrease in projected cash flows.

In Q2 2025, the Company identified a change in market conditions in relation to its IPR&D asset which is in development. The change is expected to impact the amount of future cash flows attributable to the technology underlying the IPR&D asset. This represented a potential impairment indicator. An impairment assessment was performed using a discounted cash flow model utilizing the updated projected cash flows and discount rate. The discount rate selected was 21%. Based on the impairment test performed, the Company assessed and determined that the carrying value of the IPR&D intangible asset exceeded its estimated fair value. As a result, the Company recognized an impairment of $28.0 million, resulting in write off of the entire carrying value of the IPR&D asset.

The estimates and assumptions updated in each of these evaluations represent a Level 3 measurement because they include unobservable inputs that are supported by little or no market activity and reflect Company- determined and judgmental factors for these assumptions in measuring a fair value. The assumptions in the assessment of an impairment analysis are inherently subjective due to uncertainty and any slight changes in these rates and assumptions could have a significant impact on the concluded value of the IPR&D intangible asset.

The estimated future annual amortization of finite-lived intangible assets is shown in the following table. Actual amortization expense to be reported in future periods could differ from these estimates as a result of acquisitions, divestitures, and asset impairments, among other factors.