SiFive raises $400M at $3.65B valuation

SiFive raised $400 million in a Series G round at a $3.65 billion valuation.

The round, announced on April 9, 2026, was described by the company as its final private financing before a possible initial public offering. The deal also included participation from NVIDIA and Apollo Global Management.

What changed

SiFive is a Santa Clara fabless semiconductor company that sells commercial RISC-V processors, silicon chips, cores, SoC IP, and development boards. Founded in 2015 by Krste Asanović, Yunsup Lee, and Andrew Waterman, the company was one of the first to ship a chip built on the RISC-V instruction set.

The company’s funding history shows a steady climb from startup to late-stage chip designer:

• 2015 Series A: $5 million
• 2017 Series B: $8.5 million
• 2018 Series C: $50.6 million
• 2019 Series D: $65.4 million
• 2020 Series E: $60 million
• 2022 Series F: $175 million at more than $2.5 billion valuation
• 2026 Series G: $400 million at $3.65 billion valuation

SiFive has also kept expanding its product line. Its portfolio now spans Performance, Intelligence, Automotive, and Essential cores, plus custom SoC work and boards such as the HiFive series. The company has shipped Linux-capable multicore CPUs, vector-processing cores, and 5 nm RISC-V silicon.

Why it matters

For developers and chip teams, the latest funding signals that RISC-V is still attracting large-scale capital outside the ARM ecosystem. SiFive’s business sits at the center of that shift because its IP can be licensed into custom silicon for data center, automotive, embedded, and AI workloads.

The new money also matters because SiFive has a mixed financial profile: 2023 revenue was $38.1 million, while operating loss reached $113 million. That gap suggests the company still depends on licensing scale and design wins to justify its valuation ahead of a possible public listing.

SiFive’s recent history also shows how the market is treating RISC-V as more than an academic ISA. Samsung, Renesas, Intel’s foundry arm, and others have all shown interest in SiFive cores or related designs, which keeps the company relevant as chipmakers look for alternatives to proprietary CPU architectures.

The key question now is whether this $3.65 billion round becomes the bridge to an IPO, or just another large private bet on RISC-V adoption.