Cloudsmith in Belfast secures $72 million in Series C funding led by TCV.

      TCV led the Series B round a year ago and is now increasing its investment in the Series C. Insight Partners is also participating again. The underlying belief is that AI coding agents are producing software at such a rapid pace and volume that human code review is inadequate; therefore, enterprise artifact management must serve as the primary layer for control and security.

      Cloudsmith, the artifact management platform based in Belfast, has successfully raised $72 million in a Series C funding round, led by TCV with contributions from Insight Partners and other current investors. Both TCV and Insight Partners had previously supported the company’s $23 million Series B in March 2025, indicating a reaffirmed commitment less than thirteen months later.

      The funds from this round will support product development and market expansion. Founded in Belfast in 2016 by Lee Skillen (CTO) and Alan Carson (now Chief Strategy Officer), Glenn Weinstein, who was previously Chief Customer Officer at Twilio, took on the role of CEO when Carson transitioned to his strategy position.

      The investment thesis centers on a specific and increasingly critical issue in enterprise software development. In the context of Cloudsmith, an “artifact” refers to any software package, binary file, compiled application, or dependency created or utilized during the development process, including the libraries, containers, and components that are part of production software.

      As AI coding agents produce code at an extraordinary volume and speed, the number of artifacts that enterprises need to manage, monitor, and secure is expanding at a rate that human review processes cannot accommodate. The threat landscape is also broadening: open-source dependencies can be compromised post-ingestion (as seen in supply chain attacks), AI-generated code may introduce unique vulnerability patterns, and regulators are increasingly requiring enterprises to prove that their software is “secure by design.”

      Cloudsmith’s offering is a cloud-native private registry and artifact management platform. Enterprises utilize it to host and distribute their internal software packages, mirror public registries (like PyPI, Docker Hub, Maven, npm, and others) in a controlled private setting, and implement security scanning, policy enforcement, and access controls on every package that moves through their build pipelines.

      The argument against traditional platforms, mainly JFrog Artifactory and Sonatype Nexus, is that these tools were crafted for an era of manually created software and cannot adapt to the AI-driven development model.

      Recent product enhancements from Cloudsmith include an ML Model Registry which applies the same governance used for code packages to ML models and datasets, and an Enterprise Policy Manager to enforce policy-as-code throughout the supply chain.

      CEO Glenn Weinstein described the Series C funding as a response to a fundamental change in software development. He stated, “AI agents generate so much software, so quickly, that it’s nearly impossible for humans to meticulously review it all. Cloudsmith has the scale and comprehensive perspective across the open-source ecosystem to safeguard enterprises against the new threats introduced by AI-driven development.”

      Morgan Gerlak, Partner at TCV, mentioned that the firm views Cloudsmith as “defining artifact management for the AI era” – a platform that enterprises will depend on for “compliance, control, and security on a global scale.”

      Thomas Krane, Managing Director at Insight Partners, emphasized the importance of “securing the software supply chain” in light of the growing prevalence of AI-driven development.

      Cloudsmith’s clientele is mainly US-based, with approximately 75% of revenue reported at the Series B, despite the company being headquartered in Belfast, a notable success within Northern Ireland’s startup landscape. The Series B announcement highlighted nearly 150% growth year-over-year, with Fortune 500 and Global 2000 companies actively transitioning from legacy systems. The Series C, which is three times larger than the Series B, indicates an expansion in both the customer base and average contract size over the past year.

      Prior to the Series C, the total amount raised was around $52.5 million, including seed funding, Series A ($26M in two parts: $15M in 2021 and $11M in 2023), and Series B.