We’re proud to announce that pubX is a sponsor of Programmatic Pioneers Summit 2026 – taking place 2-3 June at the Royal Lancaster, London.

600+ programmatic leaders in one room, at a moment when AI, agentic advertising and new data ecosystems are rewriting how the industry works. It’s exactly the kind of event that matters right now.

On Day 1 (Tuesday 2 June, 4:10pm), our MD Commercial, EMEA, Lawrence Horne, will be hosting a panel on one of the most pressing questions in programmatic: After the Middlemen — How agentic buying and the Unified Ad Platform will pay premium publishers back.

The DSP/SSP split is historical, not structural. As agentic workflows reduce the cost of operating a broad stack and unified platforms collapse the intermediary layers, where does the recovered margin go — and who controls the terms of the deal?

Lawrence will be joined by:

• Harry Harcus, Managing Director, Growth Solutions – Dentsu
• Mark Syal, Chief Product Officer – Medialab Group
• Matt O’Neill, European Growth Lead — Medal.tv

Expect a candid conversation on the economics for both buyers and publishers, what the shift to agentic actually means in practice, and why the open web depends on getting this transition right.

If you’re attending, come and find the team. We’d love to connect.

👉 View the full agenda