Chainguard Raises $356M to Protect Open-Source Supply Chain

Series D Round Comes at $3.5B Valuation, Fuels Product Expansion Beyond Containers Michael Novinson (MichaelNovinson) • April 23, 2025

A supply chain security startup led by an ex-Google Cloud engineer raised $356 million to mitigate accidental and malicious vulnerabilities in widely used software components.

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The Series D funding will help Seattle-area Chainguard expand its product offerings from protecting container images to safeguarding virtual machines and language-specific libraries to better cover almost all enterprise-used open-source code, according to co-founder and CEO Dan Lorenc. He said rebuilding open source from the ground up will help Chainguard address vulnerabilities that other vendors overlook.

"You raise rounds when you can, when the market supports it and before you need to hopefully," Lorenc told Information Security Media Group. "So, I don’t think we’ve spent any ...