SiFive Raises $400 Million for Custom Chip Designs

San Mateo-based semiconductor startup SiFive raised $400 million in Series G funding led by Atreides Management with participation from Nvidia, Apollo Global Management, and Point72 to expand its RISC-V-based custom chip design business targeting AI data centers. The company, which provides chip design blueprints built on the open RISC-V standard to customers including Alphabet, is challenging incumbent Arm Holdings' proprietary architecture approach. CEO Patrick Little expects this to be SiFive's final funding round before pursuing an IPO. The raise underscores growing investor interest in open-standard chip architectures as major tech companies increasingly develop custom silicon for specialized applications like artificial intelligence workloads.

SiFive's $400M Semiconductor Funding Round

• ▪SiFive raised a $400 million Series G funding round led by Atreides Management.
• ▪SiFive CEO Patrick Little expects the $400 million raise to be SiFive's last funding round before an IPO.
• ▪SiFive is a San Mateo, California-based semiconductor startup.
• ▪SiFive is challenging incumbent Arm Holdings with chip designs built on an open rather than proprietary standard.

Defense and Aerospace Startups Raise Major Rounds

• ▪Investors in Hermeus's funding round include Socium Ventures, RTX Ventures, Karman Ventures, Founders Fund, IQT and Cox Enterprises.
• ▪Starfish Space's spacecraft dock to satellites already in orbit to service and reposition them.
• ▪Starfish Space is a Seattle-based startup developing and manufacturing autonomous space vehicles that perform in-orbit satellite servicing missions.
• ▪Hermeus's funding round pushed its valuation to $1 billion.
• ▪Starfish Space's Series B round was led by Activate Capital Partners, Point72 Ventures and Shield Capital.
• ▪Hermeus is an El Segundo, California-based startup developing autonomous military aircraft.
• ▪Starfish Space raised $111.7 million in a Series B funding round.
• ▪Hermeus raised $200 million in equity in a Khosla Ventures-led funding round.
• ▪Hermeus raised $150 million in debt as part of its funding round.

Biotech Companies Secure Significant Funding for Cancer Therapies

• ▪Stipple Bio raised a $100 million Series A round to advance its precision cancer therapies.
• ▪Stipple Bio's Series A round was led by a16z Bio+Health, Nextech Invest and RA Capital Management.
• ▪Sidewinder Therapeutics raised a $137 million Series B led by Frazier Life Sciences and Novartis Venture Fund.
• ▪Sidewinder Therapeutics is a San Diego-based biotech startup developing cancer drugs to target difficult-to-treat tumors.

Perspective of RISC-V ecosystem advocates

• ▪SiFive's $400 million raise demonstrates growing investor confidence in RISC-V as a viable alternative to proprietary chip architectures.

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