XML 49 R38.htm IDEA: XBRL DOCUMENT
v3.25.4

Segments and Major Customers (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2025
Segment Reporting Information [Line Items] |
Schedule of Segment Reporting Information, By Segment | The significant expenses that are regularly provided to the CODM and reconciliations to the consolidated net income for the years ended December 31, 2025, 2024 and 2023, respectively, were as follows:
|  | Years Ended December 31, |
(In thousands) |  | 2025 |  |  | 2024 |  |  | 2023 |
Total revenue |  | $ | 707,630 |  |  | $ | 556,624 |  |  | $ | 461,117 |
Adjusted cost of revenue (1) |  |  | (136,791 | ) |  |  | (98,368 | ) |  |  | (89,322 | )
Adjusted research and development (2) |  |  | (167,048 | ) |  |  | (146,431 | ) |  |  | (140,793 | )
Adjusted sales, general and administrative (3) |  |  | (82,322 | ) |  |  | (76,038 | ) |  |  | (76,669 | )
Other segment items: |  |  |  |  |  |  |  |  |
Stock-based compensation expenses (4) |  |  | (54,267 | ) |  |  | (44,879 | ) |  |  | (45,011 | )
Amortization of acquired intangible assets (4) |  |  | (6,878 | ) |  |  | (11,710 | ) |  |  | (14,741 | )
Impairment of assets |  |  | — |  |  |  | (1,071 | ) |  |  | (10,045 | )
Acquisition & divestiture-related costs (5) |  |  | (106 | ) |  |  | (162 | ) |  |  | (1,625 | )
Interest and other income (expense), net |  |  | 21,738 |  |  |  | 17,034 |  |  |  | 33,521 |
Change in fair value of earn-out liability |  |  | — |  |  |  | 5,044 |  |  |  | (9,234 | )
Restructuring charges |  |  | — |  |  |  | — |  |  |  | (9,368 | )
Gain on divestiture |  |  | — |  |  |  | — |  |  |  | 90,784 |
Other (6) |  |  | — |  |  |  | — |  |  |  | (1,454 | )
Provision for (benefit from) income taxes |  |  | (51,501 | ) |  |  | (20,222 | ) |  |  | 146,744 |
Net income |  | $ | 230,455 |  |  | $ | 179,821 |  |  | $ | 333,904 |
(1) Excludes stock-based compensation expenses and amortization of acquisition-related intangible assets. (2) Excludes stock-based compensation expenses and retention bonus expense related to acquisitions. (3) Excludes stock-based compensation expenses, acquisition-related costs and retention bonus expense related to acquisitions. (4) The Company excludes these expenses from its adjusted cost of revenue and operating expenses primarily because such expenses are non-cash expenses that the Company does not believe are reflective of ongoing operating results. (5) The Company excludes these expenses in order to provide better comparability between periods as they are related to acquisitions and divestitures and have no direct correlation to the Company’s ongoing operating results. (6) Includes expense on abandoned operating leases, facility restoration costs and certain other one-time adjustments. The Company excludes these items as they are not reflective of ongoing results. The following represents the Company’s significant expenses related to research and development expenses and sales, general and administrative expenses, as shown above, for the years ended December 31, 2025, 2024 and 2023:
|  | Years Ended December 31, |
(In thousands) |  | 2025 |  |  | 2024 |  |  | 2023 |
Payroll and benefits |  | $ | 154,943 |  |  | $ | 129,228 |  |  | $ | 123,056 |
Variable research and development expenses (1) |  |  | 27,097 |  |  |  | 27,342 |  |  |  | 28,228 |
Professional fees |  |  | 19,889 |  |  |  | 20,055 |  |  |  | 22,148 |
Temporary labor services and consulting expenses |  |  | 12,634 |  |  |  | 14,264 |  |  |  | 13,577 |
Facilities costs |  |  | 12,542 |  |  |  | 11,853 |  |  |  | 12,347 |
Amortization and depreciation |  |  | 11,916 |  |  |  | 10,076 |  |  |  | 10,144 |
Other expenses |  |  | 10,349 |  |  |  | 9,651 |  |  |  | 7,962 |
Total adjusted operating expenses |  | $ | 249,370 |  |  | $ | 222,469 |  |  | $ | 217,462 |
(1) Includes primarily software tools, software licenses and prototyping costs.
Schedule of Revenue From External Customer by Geographic Regions | Revenue from customers in the geographic regions based on the location of contracting parties was as follows:
|  | Years Ended December 31, |
(In thousands) |  | 2025 |  |  | 2024 |  |  | 2023 |
South Korea |  | $ | 329,256 |  |  | $ | 197,515 |  |  | $ | 152,328 |
Singapore |  |  | 163,821 |  |  |  | 67,318 |  |  |  | 53,327 |
United States |  |  | 124,101 |  |  |  | 201,466 |  |  |  | 176,821 |
Other |  |  | 90,452 |  |  |  | 90,325 |  |  |  | 78,641 |
Total |  | $ | 707,630 |  |  | $ | 556,624 |  |  | $ | 461,117 |
Accounts receivable |
Segment Reporting Information [Line Items] |
Schedule of Customer Accounts Representing 10% or More Than 10% of Total Balance | Accounts receivable from the Company’s major customers representing 10% or more of total accounts receivable as of December 31, 2025 and 2024, respectively, was as follows:
|  | As of December 31, |
Customer |  | 2025 |  |  | 2024 |
Customer 1 |  |  | 35 | % |  |  | 39 | %
Customer 2 |  |  | 22 | % |  |  | 17 | %
Revenue |
Segment Reporting Information [Line Items] |
Schedule of Customer Accounts Representing 10% or More Than 10% of Total Balance | Revenue from the Company’s major customers representing 10% or more of total revenue for the years ended December 31, 2025, 2024 and 2023, respectively, was as follows:
|  | Years Ended December 31, |
Customer |  | 2025 |  |  | 2024 |  |  | 2023 |
Customer A |  |  | 23 | % |  |  | 23 | % |  |  | 27 | %
Customer B |  |  | 18 | % |  |  | 17 | % |  |  | 18 | %
Customer C |  | * |  |  |  | 12 | % |  | * |
* Customer accounted for less than 10% of total revenue in the period.

X
- Definition Tabular disclosure of revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 + Details
Name: | us-gaap_RevenueFromExternalCustomersByGeographicAreasTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
Name: | us-gaap_ScheduleOfSegmentReportingInformationBySegmentTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 18 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-18 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 275 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 20 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482861/275-10-50-20 + Details
Name: | us-gaap_SchedulesOfConcentrationOfRiskByRiskFactorTextBlock
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConcentrationRiskByBenchmarkAxis=rmbs_SalesNetMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |