ArcSpan, the leading publisher-first audience monetisation platform, today announced it has raised USD$5.2m (£3.4m) in a Seed Extension round. The capital will support ArcSpan's mission to help digital publishers maximise revenue by transforming first-party data into high-performance, advertiser-ready audience and curation solutions.

The funding round, backed by both new and existing investors, underscores growing demand for publisher-centric data platforms that deliver actionable audience segmentation, content intelligence, and direct monetisation tools as the industry transitions beyond third-party cookies.

"Publishers are sitting on powerful audience signals but lack the tools to efficiently activate and monetise them," said Art Muldoon, Co-Founder and CEO of ArcSpan. "This investment enables us to fast-track our AI development and scale new capabilities like contextual quality scoring, audience curation, and turnkey PMP activation, all while putting publisher control at the centre."

ArcSpan will use the funding to accelerate development and go-to-market efforts for several new innovations:

• Audience Builder 3.0 – AI-powered segmentation and modeling engine for real-time, agentic audiences
• PMP Activation Hub – pre-qualified publisher deal packaging and campaign enablement with SSP and DSP integrations
• ArcSpan QualityCloud^™ and AQI – contextual and ad placement quality scoring for inventory curation, planning, and optimisation

Since launching the ArcSpan AMS enterprise data platform in 2023, ArcSpan has partnered with leading media companies and SSPs to streamline the path from data to demand. The AMS platform's Triple-A Framework – Aggregation, Amplification, and Activation – gives publishers a simplified yet powerful approach to harnessing first-party data and driving premium yield.

"We believe ArcSpan is solving one of the most pressing problems in digital media – how to enable scalable, high-fidelity targeting and monetisation of publisher audiences and first-party data signals for advertiser outcomes," said Al Muzaurieta, Co-Founder at Good Apple. "Their vision, expertise, and traction in the market made this a compelling investment."

With this raise, ArcSpan plans to expand its product, data science, and publisher success teams while deepening integrations across the advertising ecosystem.

To learn more about ArcSpan or to explore partnership opportunities, visit www.arcspan.com.