MediaMath, Inc. vs Magnite

Infillion to Acquire Foursquare, Closing the Loop Between Advertising and Real-World Results

With Foursquare, Infillion becomes the first independent platform to close the advertising loop on real-world outcomes — bringing together purchase signal, visit signal, and the execution engine to turn both into results.

Infillion Acquires Foursquare to Bolster Location Data

Infillion, a rapidly expanding ad tech company, has acquired Foursquare, a location intelligence company, to enhance its omnichannel platform. The terms of the deal were not disclosed. Foursquare, known for its consumer check-in app, pivoted to B2B location data, covering over 100 million points of interest and serving clients like Apple Maps and Uber. Infillion's CEO, Rob Emrich, stated the company will remain an active acquirer as clients prefer omnichannel solutions. This acquisition follows Infillion's purchase of Catalina in February and MediaMath in 2023, reflecting its strategy to combine physical world data for better attribution.

• Infillion acquires Foursquare, adding location data to its ad tech stack.
• Terms of the deal were not disclosed.
• Foursquare covers 100 million points of interest and 250 million US devices.

Live Sports Has a New Audience. Does Your Media Plan Know That?

Discover how live sports audiences are changing—and how Infillion’s Infinite Video helps brands reach fans across leagues, screens, and beyond the game.

Magnite Advances Agentic Vision as Major Media Owners, Buyers and Technology Players Leverage Orchestration Layer

Magnite announces that major media owners, buyers, and technology players are leveraging its orchestration layer, advancing its agentic vision.

PebblePost Names Adam Soroca CEO, Expands to CTV

PebblePost, a marketing technology company specializing in purchase-powered multichannel marketing, announced the appointment of Adam Soroca as Chief Executive Officer. Soroca, a veteran ad-tech innovator who previously served as Chief Product Officer at Magnite, will lead PebblePost's expansion from its programmatic direct mail roots into connected TV (CTV) and a broader offering powered by verified first-party purchase behavior. The company also brought on Melanie Samson as Chief Marketing Officer. PebblePost leverages billions of intent signals and over $100 billion in annual transaction data to help brands identify future buyers and measure incremental impact. Clients include Carter's, Michael Kors, and Virgin Voyages. Soroca's appointment underscores PebblePost's focus on data-driven, performance-oriented advertising across channels.

• PebblePost appointed Adam Soroca as CEO, effective September 15, 2026.
• Adam Soroca previously served as Chief Product Officer at Magnite.
• PebblePost also hired Melanie Samson as Chief Marketing Officer; she previously was VP of Growth Marketing at Acxiom.

Prebid Appoints Former Chairman Garrett McGrath as President

Prebid.org has appointed Garrett McGrath, its former chairman, as its new president, effective September 15, 2026. McGrath, who previously served as SVP of Product Management at Magnite and led Prebid's board for five years until June 2026, succeeds Mike Racic, who departs in October. With over 25 years of experience, McGrath will oversee operational strategy, committee stewardship, and growth. His vision includes supporting multiple agentic AI standards, remaining agnostic to competing protocols, and enhancing publisher monetization through deal curation and data co-ops. He also discussed potential collaboration with Google if mandated by antitrust remedies. Prebid.org is advancing initiatives such as Prebid Sales Agent and enhancements to Prebid Mobile SDK 4.0, emphasizing its role as critical open-web infrastructure and an independent, open-source alternative to walled gardens amid industry shifts.

• Garrett McGrath appointed as Prebid.org's president, effective September 15, 2026.
• McGrath served as Prebid's chairman for five years until June 2026 and previously as SVP of Product Management at Magnite.
• Outgoing president Mike Racic will transition until October 15, 2026.