Arrivals & Departures: GroupM ceo ships out, Hypermedia taps Justine Ussher

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GroupM ceo Sean Seamer has bailed – to join MediaCom Sydney as ceo. He’d been in the GroupM role since the company set up in NZ a year ago, and will continue to oversee the NZ operation until a replacement is appointed.

Seamer is also ex MediaCom in the US, Europe and Asia Pacific.

“MediaCom has been a huge part of my career and I’m very much looking forward to being back in the team,” Seamer said. “The talent in Australia and in the network is world class, so it will be a pleasure to work with them again.”

“Sean has been one of the big success stories within MediaCom and I loved working with him previously,” said MediaCom APAC ceo Mark Heap.


Consumer proximity marketing agency Hypermedia has appointed Justine Ussher as sales director, where – among other projects – she will oversee the recently launched Rewarded and SuperMarketer platforms.

Ussher’s 30-year career has spanned banking, professional services and alcohol brands with senior roles at Westpac, Kiwibank, DB Breweries, Montana Wines and (most recently) as sales manager at Yes Finance.

Hypermedia managing director Chris Jones said her addition of Justine to the team boosts the agency’s expert capabilities. “Not only does Justine bring with her a wealth of experience in sectors with huge relevance to our business, she also is armed with the very best sales practices and a terrific network,” he said.

Ussher said: “I am extremely pleased to be joining Hypermedia. We have a fantastic team and an excellent product offering. Exciting times ahead as we work closely with our business partners and advertisers to ensure the success of Rewarded and SuperMarketer.”.

The Hypermedia business spans, instore media and POS, iBeacon technology, a national merchandising team and the recently created Real Activation business.


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