Here are the 10-K annual reports from Rambus Inc (RMBS) in our archive since June 2025, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A 10-K covers the audited annual report, with the full financial statements, so if you follow RMBS and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full RMBS filings page.
Rambus Inc. files its annual report describing a semiconductor and silicon IP business centered on high‑performance memory and security for data center and AI infrastructure.
The company reports strong execution in 2025 across DDR5 and LPDDR5 memory interface chips, expansion into high‑performance and AI PCs, and growing demand for HBM4, GDDR7, PCIe 7.0 and security IP. It highlights a fabless manufacturing model and long-term patent licensing agreements as key cash generators and sources of shareholder returns.
Rambus spent $187.7 million on research and development in 2025, up from $162.9 million in 2024 and $156.8 million in 2023. As of December 31, 2025 it had 791 employees, about 71% in engineering, and held 2,049 patents with 486 applications pending. Revenue is concentrated, with the top five customers providing 66% of 2025 revenue and international customers 82%. The report outlines extensive risk factors including industry cyclicality, AI demand uncertainty, supply chain and cybersecurity exposure, high customer concentration, and complex global regulatory and tax environments.