Mediahub Australia

Mediahub Australia is the Australian arm of the Mediahub media agency, operated as a joint venture between Omnicom (which inherited Interpublic Group's majority stake when it acquired IPG in November 2025) and the independent Attivo Group, which bought a minority share of Mediahub Worldwide Asia-Pacific from IPG in June 2021. It is led by Sue Squillace, CEO of Mediahub ANZ, with offices in Sydney and Perth. When Omnicom Media combined Mediahub and Hearts & Science into Hearts United in August 2026, Australia was the exception: because of the joint-venture ownership, Mediahub Australia continues to operate as a separate agency, while Hearts & Science Australia took the Hearts United name. Ownership percentages have not been disclosed.