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SUPPLEMENTAL BALANCE SHEET DETAILS (Tables)

3 Months Ended

Mar. 30, 2025

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Accounts Receivable

Accounts Receivable

In millions			March 30, 2025						December 29, 2024
Trade accounts receivable, gross			$	706					$	744
Allowance for credit losses			(7)						(9)
Total accounts receivable, net			$	699					$	735

Schedule of Inventory

Inventory

In millions			March 30, 2025						December 29, 2024
Raw materials			$	216					$	225
Work in process			404						404
Finished goods			26						31
Inventory, gross			646						660
Inventory reserve			(109)						(113)
Total inventory, net			$	537					$	547

Schedule of Accrued Liabilities

Accrued Liabilities

In millions			March 30, 2025						December 29, 2024
Contract liabilities, current portion			$	256					$	260
Accrued compensation expenses (1)			198						252
Accrued taxes payable			80						101
Operating lease liabilities, current portion			78						79
Other, including warranties (2)			122						135
Total accrued liabilities			$	734					$	827

_____________

(1)Includes employee separation costs related to restructuring activities.

(2)See table below for changes in the reserve for product warranties.

Schedule of Changes in Reserve for Product Warranties

Changes in the reserve for product warranties were as follows:

In millions			Q1 2025						Q1 2024
Balance at beginning of period			$	18					$	21
Additions charged to cost of product revenue			8						12
Repairs and replacements			(9)						(13)
Balance at end of period			$	17					$	20

Schedule Of Restructuring and Related Costs

A summary of the pre-tax restructuring charges is as follows:

In millions			Q1 2025						Q1 2024																		Cumulative charges recorded since inception
Employee separation costs			$	31					$	4																	$	91
Asset impairment charges (1)			—						32																		146
Other costs			—						—																		8
Total restructuring charges (2)			$	31					$	36																	$	245

_____________

(1)For Q1 2024, primarily relates to impairment of right-of-use assets and leasehold improvements for our Foster City campus.

(2)For Q1 2025, $18 million was recorded in SG&A expense, $11 million in R&D expense, with remainder in cost of revenue.

For Q1 2024, $35 million was recorded in SG&A expense and $1 million in R&D expense and primarily related to Core Illumina segment.

A summary of restructuring liability activity during Q1 2025 is as follows:

In millions			Employee Separation Costs (1)												Other Costs						Total
Amount recorded in accrued liabilities as of December 29, 2024			$	2											$	2					$	4
Additional expense recorded			31												—						31
Cash payments			(4)												(2)						(6)
Amount recorded in accrued liabilities as of March 30, 2025			$	29											$	—					$	29
Estimated costs to still be incurred			$	15											$	—					$	15

_____________

(1)It is expected that substantially all of the employee separation related charges will be incurred and paid by the end of Q3 2025.

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