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OpenX Appoints Robert Horler as Chief Executive Officer

PRIVATENov 02, 2026

Position

Chief Executive Officer

Company

OpenX

Robert Horler
PasadenaInformation TechnologyPublishing

Description

OpenX has announced the appointment of Robert Horler as Chief Executive Officer. He will lead the company into its next phase of growth with a focus on innovative advertising solutions.

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A new leader at OpenX brings new priorities and often new vendors. The first weeks are when they listen.

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Company Information

Company

OpenX

Location

Pasadena, California, United States

About

OpenX is an independent omni-channel supply-side platform (SSP) and a global leader in supply-side curation, transparency, and sustainability. Through its 100% cloud-based tech stack, OpenX powers advertising across CTV, app, mobile web, and desktop, enabling publishers to deliver marketers with improved performance and dynamic future-proofed solutions. With a 17-year track record of programmatic innovation, OpenX is a direct and trusted partner of the world’s largest publishers, working with more than 130,000 premium publisher domains and over 100,000 advertisers. As the market leader in sustainability, OpenX was the first adtech company to be certified as CarbonNeutral™ and third-party verified for achieving its SBTi Net-Zero targets.

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Fundz is a real-time business intelligence platform powered by agentic AI that proactively delivers personalized daily signals, including funding rounds, executive changes, M&A activity, 13F institutional filings, SEC 8-K events, investor activity, and website modifications, based on each user's watchlist and ICP. A trusted data source at firms such as BlackRock, Oracle, Kleiner Perkins, LinkedIn, HubSpot, and Cloudflare, Fundz democratizes the institutional-grade intelligence that previously required a PitchBook or Bloomberg terminal. Features include Daily Briefing for AI-powered daily briefings, and unified cross-signal alerts across 281,000+ organizations. Developers and data teams can access these signals programmatically via the Fundz Funding Data API, with transparent published pricing.