Most recently, Nienhaus led the engagement and development program for the 4As.

Previously, Sprouse was creative director at BBH USA, where he helped shape the "Shop With Google" platform.

Jenner's remit includes AI-enabled engagement and personalization.

The hire marks a return to the agency for Ed Anderson.

Allen will focus on an as-yet unnamed agency of record partnership.

Code3 helps leading brands engage customers on every digital platform.

CEO Meredith Vaughan said Oak's impact on its client work "has been immediate and incredible."

Brown has worked at various agencies, including Saatchi & Saatchi, Campfire NYC and cp+b.

Meg Gallimore is now creative director, art and Ben Resnikoff was upped to creative director, copy.

Previously, he led media teams at Dentsu International for clients including Hitachi and Louis Vuitton Moet Hennessy LVMH.