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Segments and Geographic Information (Tables)

12 Months Ended

Dec. 27, 2025

Segment Reporting [Abstract]

Operating Results by Reportable Segments

The following table provides net contribution by reportable segment and includes a reconciliation to income before income taxes (dollars in thousands):

			Fiscal 2025
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	637,898					$	147,095					$	—					$	784,993
Cost of revenues			379,398						85,542						11,202						476,142
Gross profit			258,500						61,553						(11,202)						308,851
Gross margin			40.5		%				41.8		%										39.3		%
Research and development			86,295						18,816						10,571						115,682
Selling			29,085						14,938						7,276						51,299
Marketing			6,494						7,472						4,943						18,909
Net contribution			$	136,626					$	20,327					$	(33,992)					122,961
General and administrative																					62,866
Factory start-up costs																					3,025
Operating income																					57,070
Interest income																					10,640
Interest expense																					(521)
Other income (expense), net																					2,202
Income before income taxes and equity investment																					$	69,391

			Fiscal 2024
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	625,960					$	137,639					$	—					$	763,599
Cost of revenues			366,953						78,128						10,595						455,676
Gross profit			259,007						59,511						(10,595)						307,923
Gross margin			41.4		%				43.2		%										40.3		%
Research and development			90,463						20,617						10,858						121,938
Selling			31,462						16,082						5,994						53,538
Marketing			8,775						7,184						5,120						21,079
Net contribution			$	128,307					$	15,628					$	(32,567)					111,368
General and administrative																					67,169
Gain on sale of business																					20,581
Operating income																					64,780
Interest income																					14,111
Interest expense																					(418)
Other income (expense), net																					939
Income before income taxes and equity investment																					$	79,412

			Fiscal 2023
			Probe Cards						Systems						Corporate and Other						Total
Revenues			$	497,903					$	165,199					$	—					$	663,102
Cost of revenues			312,511						80,464						11,547						404,522
Gross profit			185,392						84,735						(11,547)						258,580
Gross margin			37.2		%				51.3		%										39.0		%
Research and development			83,104						21,487						11,174						115,765
Selling			26,912						17,026						8,581						52,519
Marketing			5,983						9,367						7,273						22,623
Net Contribution			$	69,393					$	36,855					$	(38,575)					67,673
General and administrative																					57,870
Gain on sale of business																					72,953
Operating income																					82,756
Interest income																					7,217
Interest expense																					(421)
Other income (expense), net																					(285)
Income before income taxes and equity investment																					$	89,267

Summary of Revenue by Geographic Region

The following table summarizes revenue, by geographic region, as a percentage of total revenues based upon ship-to location:

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
South Korea			30.3		%				24.2		%				17.8		%
Taiwan			25.8						22.7						22.3
United States			19.4						24.1						25.9
China			7.4						13.5						13.8
Japan			5.5						4.4						5.5
Singapore			4.2						2.6						2.8
Europe			3.7						4.6						5.9
Malaysia			2.4						2.4						4.0
Rest of World			1.3						1.5						2.0
Total revenues			100.0		%				100.0		%				100.0		%

Summary of Revenue by Market

The following table summarizes revenue by market (in thousands):

			Fiscal Year Ended
			December 27, 2025						December 28, 2024						December 30, 2023
Foundry & Logic			$	369,897					$	381,182					$	363,539
DRAM			247,397						227,422						113,779
Flash			20,604						17,356						20,585
Systems			147,095						137,639						165,199
Total revenues			$	784,993					$	763,599					$	663,102

Summary of Revenue by Timing of Recognition

The following table summarizes revenue by timing of revenue recognition (in thousands):

			Fiscal Year Ended
			December 27, 2025																		December 28, 2024																		December 30, 2023
			Probe Cards						Systems						Total						Probe Cards						Systems						Total						Probe Cards						Systems						Total
Products transferred at a point in time			$	630,955					$	131,859					$	762,814					$	620,597					$	122,181					$	742,778					$	494,624					$	155,145					$	649,769
Services transferred over time			6,943						15,236						22,179						5,363						15,458						20,821						3,279						10,054						13,333
Total			$	637,898					$	147,095					$	784,993					$	625,960					$	137,639					$	763,599					$	497,903					$	165,199					$	663,102

Long-lived Assets by Location

Long-lived assets, comprised of Operating lease, Right-of-use assets, Property, plant and equipment, net, Goodwill and Intangibles, net, reported based on the location of the asset was as follows (in thousands):

			December 27, 2025						December 28, 2024						December 30, 2023
United States			$	449,966					$	411,646					$	414,607
Europe			48,733						21,323						23,204
Asia-Pacific			9,902						9,366						11,135
Total			$	508,601					$	442,335					$	448,946

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