The pitch is understood to have involved Mediaedge:cia, Starcom, Media Planning Group and ZenithOptimedia.
H Bauer called a pitch for its media buying account last month across its portfolio of UK magazine brands, including its flagship title Take a Break and the newly-launched women's weekly, In the Know.
The pitch process was handled by Edwards Groom Saunders, which handles the media planning account for the H Bauer magazine brands.
The publisher used the majority of its spend promoting these two titles, but has also recently run television campaigns for Bella and TV Choice.
Last August, the publisher ploughed £10m into marketing the launch of In the Know.
In February, it was revealed that the title had been selling just 107,000 newsstand copies per week despite the launch print run of 900,000. The publisher insisted that it had a "sustainable business model" and promised new developments.
H Bauer launched the title at a cover price of £1. However, it has frequently been price promoted at 50p.
At the time of the circulation announcement, David Goodchild, UK managing director of H Bauer, said: "The start has been in line with the pace of most new launches last year which have entered a particularly aggressive marketplace."
At the time of its launch, In The Know faced competition from Emap's First, which launched in May 2006 with a £1.30 cover price. It also competes for readers with more gossip-oriented titles such as Closer and Heat.