Chainguard, a cybersecurity startup focused on software supply chain security, has raised $356 million in a Series D funding round co-led by Kleiner Perkins and IVP, with participation from Salesforce Ventures, Datadog Ventures, and other existing investors. The funding values Chainguard at $3.5 billion, up from $1.12 billion in 2024, and brings its total capital raised to $612 million since its founding in 2021. The company has achieved $40 million in annual recurring revenue and aims to surpass $100 million in ARR by the end of fiscal year 2026. Chainguard offers a library of over 1,400 hardened container images that feature 98% fewer common vulnerabilities and exposures (CVEs) than standard open-source alternatives. These production-ready images are used by enterprise customers including Snowflake, HPE, Anduril, and Wiz to meet compliance requirements in regulated industries. The leadership team includes CEO Dan Lorenc, Matt Moore, Kim Lewandowski, and Ville Aikas, all of whom have backgrounds at Google and have contributed to open-source security projects. The Series D funding will support the expansion of Chainguard's secure-by-default product suite, including open-source language libraries and virtual machine images.