Mediahub
Mediahub delivered indie-spirited, culturally attuned media planning and buying for founder-driven and challenger brands, combining the resources of a holding-company network with the agility of a boutique agency.
Last updated Oct 24, 2026 by the ATDb Editorial Team
AI-drafted from public sources11 sources cited
At a glance
About
Mid-sized challenger media agency within a major holding company network; merged into Hearts United (Omnicom Media) in 2026
Mediahub was a media agency network founded in 2005 as a media-buying spinoff of Mullen, later known as MullenLowe Mediahub before becoming an independent agency within Interpublic Group in 2019. It joined IPG Mediabrands in February 2023 and moved to Omnicom Media when Omnicom's acquisition of IPG closed on November 26, 2025. On August 28, 2026, Omnicom Media combined Mediahub with Hearts & Science to form Hearts United; mediahubww.com now redirects to heartsunited.com. Mediahub leaders took Hearts United's top regional roles, including Nicole Estebanell (U.S. CEO) and Ross Jenkins (EMEA CEO). Between 2021 and 2025 Mediahub grew its billings by 33%, according to Omnicom Media. Mediahub Australia continues as a separate agency.
Business model
Agency
Target market
Mid-Market and Enterprise
What they offer
Media Planning
Strategic cross-channel media planning tailored to challenger and growth-stage brands
Media Buying
Negotiation and procurement of media inventory across TV, digital, OOH, audio, and social
Creator Economy Media
Specialist capability in influencer and creator-driven media strategies
Data & Analytics
Audience insights, measurement, and attribution services supporting campaign optimization
Key features
Use cases
Customer segments
Tech & specs
Technology stack
Security & compliance
Deployment
API
No
- 2005 · Founded
- 2023Came under IPG Mediabrands
- 2025Moved to Omnicom Media
- 2026Merged into Hearts United