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RAMBUS INC

RMBS
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Business Summary

Rambus is a global semiconductor company providing industry-leading chips and silicon IP for data-intensive computing systems, focusing on data center and artificial intelligence infrastructure. The ongoing proliferation of AI is placing unprecedented demands on computing infrastructure, requiring massive amounts of processor performance and extremely high memory bandwidth. The persistent gap between processor performance and memory subsystem capabilities remains one of the largest bottlenecks in high performance compute systems. The semiconductor industry is intensely competitive and is characterized by rapid technological change, short product life cycles, cyclical market patterns, price erosion, increasing foreign and domestic competition, market consolidation and geopolitical developments that increasingly impact business.

In the memory interface chip market, Rambus competes with international semiconductor companies, including but not limited to Monolithic Power Systems, Montage Technology, Renesas and Texas Instruments. In the Silicon IP market, Rambus competes with the in-house design teams at potential customers, as well as with third-party IP suppliers, such as Cadence and Synopsys. Many competitors are larger and may have better access to financial, technical, sales and marketing resources. Leading semiconductor and electronic system companies such as AMD, Amlogic, Broadcom, CXMT, IBM, Infineon, Kioxia, Marvell, MediaTek, Micron, Nanya, Nuvoton, NVIDIA, Phison, Qualcomm, Samsung, Silicon Motion, SK hynix, Socionext, STMicroelectronics, Toshiba, Western Digital and Winbond have licensed Rambus patents. The top five customers represented approximately 66% of consolidated revenue for the year ended December 31, 2025 and 62% for both the years ended December 31, 2024 and 2023 .

Rambus generates revenue through three primary streams: product revenue, royalties, and contract and other revenue. Product revenue consists primarily of memory interface chips sold directly and indirectly to memory module manufacturers, OEMs and hyperscalers worldwide through multiple channels, including a direct sales force and distributors. Royalties revenue is primarily derived from patent licenses, which enable customers to use specified portions of the portfolio of patented inventions in their own digital electronics products, with license agreements typically ranging up to ten years and structured with fixed or variable, or a hybrid of fixed and variable royalty payments. Contract and other revenue consists primarily of Silicon IP, including high-speed interface and security IP solutions, software licenses and related implementation, support and maintenance fees and engineering services fees.

Memory interface chips include complete chipset solutions for industry-standard DDR5 and LPDDR5 memory modules for server and client systems, including Registered Dual Inline Memory Modules and next-generation Multiplexed Rank Dual Inline Memory Modules. The chipset offerings include Registering Clock Drivers, Multiplexed Registering Clock Driver, Multiplexed Data Buffer, Client Clock Driver, Power Management Integrated Circuits, Serial Presence Detect Hubs and Temperature Sensors. Product revenue accounted for 49% of consolidated revenue for the year ended December 31, 2025 , 44% for 2024 and 49% for 2023 . Product revenue was $347.8 million in 2025, $246.8 million in 2024 and $224.6 million in 2023.

Silicon IP includes high-performance interface and security IP solutions that move and protect data in advanced AI, data center, government and automotive applications. Interface IP solutions feature high-speed memory and chip-to-chip digital controller IP, including HBM Memory Controller IP, GDDR Memory Controller IP, PCIe Controllers, Retimer and Switch IP, and CXL Controller IP. Security IP offerings comprise one of the industry's most comprehensive portfolios, including Hardware Roots of Trust, High-speed Protocol Engines, Crypto Cores and Chip Provisioning Technologies. Royalties revenue accounted for 40% of consolidated revenue for the year ended December 31, 2025 , 41% for 2024 and 32% for 2023 . Royalties revenue was $279.4 million in 2025, $226.2 million in 2024 and $150.1 million in 2023. Contract and other revenue accounted for 11% of consolidated revenue for the year ended December 31, 2025 , 15% for 2024 and 19% for 2023 . Contract and other revenue was $80.4 million in 2025, $83.6 million in 2024 and $86.4 million in 2023.

In 2025, Rambus strengthened its leadership in DDR5 Registering Clock Drivers and expanded the adoption of new products, contributing to revenue growth. The company expanded into high-performance and AI PCs with the launch of its complete client chipset, giving a comprehensive portfolio that supports all JEDEC-standard DDR5 and LPDDR5 modules across server and client systems. Strong customer momentum was achieved across HBM4, GDDR7 and PCIe 7.0 digital IP families, along with security IP. The company successfully secured and extended key patent licensing agreements. During the year ended December 31, 2025, Rambus repurchased 0.1 million shares for approximately $7.1 million as part of the 2025 Buying Plans. As of December 31, 2025, there remained an outstanding authorization to repurchase approximately 5.5 million shares of outstanding common stock under the 2020 Repurchase Program. In July 2023, Rambus entered into an asset purchase agreement with Cadence Design Systems, Inc. to sell certain assets with respect to its PHY IP group, recognizing a net gain of approximately $90.8 million during the year ended December 31, 2023.

Revenue for the year ended December 31, 2025 was $707.6 million , compared to $556.6 million in 2024 and $461.1 million in 2023, representing a 27.1% increase from 2024 to 2025 and a 20.7% increase from 2023 to 2024. Net income was $230.5 million in 2025, $179.8 million in 2024 and $333.9 million in 2023. Diluted net income per share was $2.11 in 2025, $1.65 in 2024 and $3.01 in 2023. Gross profit was $563.2 million in 2025, $446.5 million in 2024 and $357.7 million in 2023. Net cash provided by operating activities was $360.0 million in 2025, $230.6 million in 2024 and $195.8 million in 2023.

Business Outlook

Rambus expects to continue to invest substantial funds in research and development activities. Research and development expenses were $187.7 million for the year ended December 31, 2025, $162.9 million for 2024 and $156.8 million for 2023. The company expects cost of product revenue to fluctuate due to changes in product mix and the timing of orders. Cost of contract and other revenue is expected to vary from period to period based on varying revenue recognized from contract and other revenue. Sales, general and administrative expenses will vary from period to period based on trade shows, advertising, legal, acquisition and other sales, marketing and administrative activities undertaken.

Rambus is well positioned to address the challenges of AI-driven computing, leveraging deep expertise in memory technology and innovative architectures to provide industry-leading memory interface chips that enable the highest bandwidth, capacity and power efficient server memory modules. Beyond the data center, server-class technologies are migrating into client devices to bring these same benefits to end-user systems, such as AI personal computers. The growing adoption of AI and heterogenous computing across diverse applications is creating significant opportunities for the silicon IP portfolio. High-performance digital controller cores are increasingly vital components in accelerated computing chips, including custom silicon, which are the workhorses of AI processing. The expanding attack surface in accelerated computing environments necessitates robust security solutions, and the industry-leading security IP plays a crucial role in safeguarding both data at rest and data in motion.

Rambus is continuing to expand into new segments, and if memory interface chips fail to achieve acceptance by customers in such segments, the business could suffer. The company is continuing to evaluate and potentially enter into strategic acquisitions or divestitures which will impact business and operating results. The company expects that revenue derived from international customers will continue to represent a significant portion of total revenue in the future. Currently, revenue from international customers is predominantly denominated in U.S. dollars.

Rambus operates a fabless business model and uses third-party foundries and manufacturing contractors to fabricate, assemble and test memory interface chips. This outsourced manufacturing approach allows the company to focus investment and resources on research, development, design, sale and marketing of products. Outsourcing also provides flexibility needed to respond to new market opportunities, simplifies operations and significantly reduces capital requirements. The company also inspects and tests parts in its U.S.-based facilities. As of December 31, 2025, Rambus had 791 employees , of which approximately 47% were in the United States and 53% in other global regions, and approximately 71% of employees were engineers.

Rambus expects to continue to invest substantial funds in research and development activities. Capital expenditures included $26.8 million paid to acquire property and equipment during the year ended December 31, 2025, $30.7 million in 2024 and $23.2 million in 2023. During the year ended December 31, 2025, Rambus repurchased 0.1 million shares for approximately $7.1 million as part of the 2025 Buying Plans. As of December 31, 2025, there remained an outstanding authorization to repurchase approximately 5.5 million shares of outstanding common stock under the 2020 Repurchase Program. The company has never paid or declared any cash dividends on common stock or other securities.

The electronics industry is intensely competitive and has been impacted by rapid technological change, short product life cycles, cyclical market patterns, price erosion and increasing foreign and domestic competition. DRAM manufacturers, which make up a significant part of revenue, are prone to significant business cycles and have suffered material losses and other adverse effects to their businesses, leading to industry consolidation from time-to-time that may result in loss of revenue under existing license agreements or loss of target customers. The adoption of AI solutions by customers and/or their end users may not develop in the manner or in the time periods anticipated and, as the markets for AI solutions are still developing, demand for products that support AI may be unpredictable and vary significantly from one period to another.

Revenue from companies headquartered outside of the United States accounted for 82% of total revenue in 2025 as compared to 64% in 2024 and 62% in 2023 . International operations and revenue are subject to a variety of risks including compliance with international laws such as the Foreign Corrupt Practices Act, sanctions and anti-corruption laws, export and import laws, tariffs, trade barriers, and geopolitical instability, particularly with China and Taiwan. The U.S. government has implemented controls affecting the ability to send certain products and technology related to semiconductors, semiconductor manufacturing and supercomputing to China without an export license, and such restrictions may be expanded to cover key products/markets. On September 18, 2025, the South Korean Supreme Court ruled that the use of any patents in South Korea constitutes domestic source income under the South Korea–U.S. Tax Treaty, even if such patents are not registered with the patent office in South Korea, resulting in a determination that it is not more likely than not that withholding taxes paid in South Korea are recoverable.

Risk Factors

Revenue is highly concentrated, with the top five customers representing approximately 66% of consolidated revenue for the year ended December 31, 2025 and 62% for both 2024 and 2023 ; the loss of any major customer could materially decrease revenue. A substantial portion of revenue is derived from international customers, constituting approximately 82% of total revenue in 2025 , 64% in 2024 and 62% in 2023 , exposing the business to risks including export controls, tariffs, geopolitical instability, and changes in foreign tax laws. The company relies on third-party manufacturers and suppliers, and any failure to perform adequately or changes in allocation of capacity could materially and adversely affect the business. The semiconductor industry is intensely competitive, and competitors such as Monolithic Power Systems, Montage Technology, Renesas, Texas Instruments, Cadence and Synopsys may have better access to financial and technical resources. The company's ability to protect its intellectual property through patents is critical, and as of December 31, 2025, the portfolio covered by 2,049 U.S. and foreign patents with expiration dates ranging from 2026 to 2044 ; any failure to protect these inventions could adversely affect operating results.

Management Priorities

Management's message emphasizes strong execution during fiscal year 2025, driven by increased demand for memory interface chips and stability from royalties revenue. Highlights from annual results for the year ended December 31, 2025 include revenue of $707.6 million , operating expenses of $303.0 million , diluted net income per share of $2.11 , and net cash provided by operating activities of $360.0 million . Record product revenue of $347.8 million in 2025 increased by approximately 41% as compared to 2024. Record cash provided by operating activities of $360.0 million was generated in 2025. Strategic priorities include focusing the product portfolio and research around core strength in semiconductors, optimizing operational efficiency, and leveraging strong cash generation to reinvest for growth. The company continues to maximize synergies across businesses and customer base, leveraging the significant overlap in the ecosystem of customers, partners and influencers.

View Source Annual Report on SEC.gov ↗

References

  1. [1] Item 7, MD&A — Executive Summary
  2. [2] Item 7, MD&A — Executive Summary
  3. [3] Item 7, MD&A — Executive Summary
  4. [4] Item 7, MD&A — Revenue Sources
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  7. [7] Item 7, MD&A — Revenue
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  10. [10] Item 7, MD&A — Revenue Sources
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  13. [13] Item 7, MD&A — Revenue
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  22. [22] Item 7, MD&A — Share Repurchase Programs
  23. [23] Item 7, MD&A — Share Repurchase Programs
  24. [24] Item 7, MD&A — Gain on Divestiture
  25. [25] Item 7, MD&A — Revenue
  26. [26] Item 7, MD&A — Revenue
  27. [27] Item 7, MD&A — Revenue
  28. [28] Item 8, Consolidated Statements of Income
  29. [29] Item 8, Consolidated Statements of Income
  30. [30] Item 8, Consolidated Statements of Income
  31. [31] Item 8, Consolidated Statements of Income
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  34. [34] Item 8, Consolidated Statements of Income
  35. [35] Item 8, Consolidated Statements of Income
  36. [36] Item 8, Consolidated Statements of Income
  37. [37] Item 7, MD&A — Liquidity and Capital Resources
  38. [38] Item 7, MD&A — Liquidity and Capital Resources
  39. [39] Item 7, MD&A — Liquidity and Capital Resources
  40. [40] Item 1, Business — Research and Development
  41. [41] Item 1, Business — Research and Development
  42. [42] Item 1, Business — Research and Development
  43. [43] Item 1, Business — Human Capital Resources
  44. [44] Item 7, MD&A — Investing Activities
  45. [45] Item 7, MD&A — Investing Activities
  46. [46] Item 7, MD&A — Investing Activities
  47. [47] Item 7, MD&A — Share Repurchase Programs
  48. [48] Item 7, MD&A — Share Repurchase Programs
  49. [49] Item 7, MD&A — Trends
  50. [50] Item 7, MD&A — Trends
  51. [51] Item 7, MD&A — Trends
  52. [52] Item 1A, Risk Factors — Summary Risk Factors
  53. [53] Item 1A, Risk Factors — Summary Risk Factors
  54. [54] Item 1A, Risk Factors — Summary Risk Factors
  55. [55] Item 1A, Risk Factors — International Operations
  56. [56] Item 1A, Risk Factors — International Operations
  57. [57] Item 1A, Risk Factors — International Operations
  58. [58] Item 1, Business — Intellectual Property
  59. [59] Item 1, Business — Intellectual Property
  60. [60] Item 7, MD&A — Executive Summary
  61. [61] Item 7, MD&A — Executive Summary
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  63. [63] Item 7, MD&A — Executive Summary
  64. [64] Item 7, MD&A — Executive Summary
  65. [65] Item 7, MD&A — Executive Summary
  66. [66] Item 8, Consolidated Statements of Income
  67. [67] Item 8, Consolidated Statements of Income
  68. [68] Item 8, Consolidated Statements of Income
  69. [69] Item 8, Consolidated Statements of Income
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  78. [78] Item 8, Consolidated Statements of Income
  79. [79] Item 8, Consolidated Statements of Income
  80. [80] Item 8, Consolidated Statements of Income
  81. [81] Item 7, MD&A — Results of Operations
  82. [82] Item 7, MD&A — Results of Operations
  83. [83] Item 7, MD&A — Results of Operations
  84. [84] Item 7, MD&A — Liquidity and Capital Resources
  85. [85] Item 7, MD&A — Liquidity and Capital Resources
  86. [86] Item 7, MD&A — Liquidity and Capital Resources
  87. [87] Item 7, MD&A — Liquidity and Capital Resources
  88. [88] Item 7, MD&A — Liquidity and Capital Resources
  89. [89] Item 7, MD&A — Provision for (Benefit from) Income Taxes
  90. [90] Item 7, MD&A — Provision for (Benefit from) Income Taxes
  91. [91] Item 7, MD&A — Provision for (Benefit from) Income Taxes
  92. [92] Item 7, MD&A — Provision for (Benefit from) Income Taxes
  93. [93] Item 7, MD&A — Revenue
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Analysis on 9/28/2026