The round was led by Chicago Ventures and the acquisition of Compliant, the media quality and governance company. Terms of the acquisition were not disclosed. Compliant will retain its name and operate as a pubX company, led by CEO Jamie Barnard. Within pubX, Jamie will take the role of President, Global Demand Growth, leading the company's global growth strategy across agencies, advertisers and the wider buy-side.

pubX builds agent-to-agent infrastructure for advertising. Its buyer and seller agents, educated by pubX, trained by the client, and governed on both sides of every transaction, let brands, agencies and publishers plan, buy, sell and optimize media directly, with trust earned one campaign at a time.