What you need to know:

• Annalect CEO Darren Stein is exiting the Omnicom and will be replaced by Dentsu's Clement Tsang.
• During his time with the business Stein grew revenue by 54%.

Annalect CEO Darren Stein is exiting the Omnicom data and analytics business after more than two years in the role.

Clement Tsang will be joining OMG from Dentsu to lead Annalect. Tsang is currently the GM of Global Media Partnerships and Innovation at Amplifi, ANZ.

During his time at Omnicom, Stein grew revenue by 54%, raised engagement by 16% and halved churn. He will remain with the business until September, with Tsang starting in October.

“Darren has played an instrumental role in standing up a fully-fledged, five pillar consulting offering for the group and many of our clients, from mid- caps to enterprise businesses have experienced the impact and project ownership first hand. The pace at which he achieved this evolution in Annalect is nothing short of remarkable and he leaves with our sincere thanks," Peter Horgan, OMG CEO said.

Stein's next move is yet to be announced but said it was an "unexpected opportunity" that he "could not walk away from".