SiFive, the leading provider of commercial RISC-V processor intellectual property, announced today the closing of a $400 million Series G funding round.

The oversubscribed financing was led by Atreides Management, with participation from NVIDIA, Apollo Global Management, Point72 Turion, T. Rowe Price Investment Management, and returning investors Prosperity7 Ventures and Sutter Hill Ventures.

The round values the company at $3.65 billion post-money, a significant increase from its $2.5 billion valuation in the March 2022 Series F round.

SiFive Chief Executive Officer Patrick Little described the financing as the company’s final private capital raise before an initial public offering, though no specific IPO timeline was provided.

“Hyperscale customers have made it very clear that it is time to accelerate the availability of open standard alternatives for the data center,” Little said in a prepared statement.

“RISC-V is the only architecture that truly delivers on these requirements. As the industry urgently evolves toward agentic AI, SiFive is doubling down on the data center.”

Proceeds from the round will be used to expedite development of next-generation high-performance RISC-V CPU, vector, and matrix intellectual property optimized for data-center and agentic AI workloads.

The company also plans to expand its global engineering teams and further strengthen its software ecosystem, including enhanced support for Linux distributions, LLVM toolchains, and NVIDIA’s NVLink Fusion technology for coherent GPU-CPU connectivity.

Founded in 2015 by the University of California, Berkeley researchers who developed the open-source RISC-V instruction set architecture, SiFive was the first company to ship a commercial RISC-V chip in 2016.

The firm licenses customizable processor cores and development platforms to semiconductor companies, hyperscalers, and system designers, enabling them to create differentiated silicon without relying on proprietary architectures such as Arm or x86.

The latest funding comes amid growing industry momentum for RISC-V in high-performance computing.

As demand for power-efficient, customizable solutions intensifies with the rise of agentic AI workloads, SiFive’s technology is positioned as a strategic alternative that offers greater flexibility and supply-chain resilience.

NVIDIA’s participation in the round highlights deepening collaboration between the two companies on AI infrastructure.

SiFive has navigated the semiconductor industry’s recent challenges, including targeted staff reductions in 2023, while maintaining focus on its core RISC-V portfolio spanning embedded, automotive, and high-end data-center applications.

With total funding now surpassing $900 million, the company enters a critical phase as it prepares for public markets and continued expansion in the AI-driven semiconductor landscape.

About SiFive

SiFive is the gold standard for RISC-V processor IP, delivering high-performance, customizable cores and development platforms to customers worldwide.

For more information, visit www.sifive.com.