Arnold Worldwide has added a new senior-level exec to its planning group that’s neatly referred to as Human Nature. The agency has welcomed Lana Plecas as SVP, global planning director on Panasonic and Fidelity among other accounts. Plecas joins from Saatchi & Saatchi New York, where she spent eight years and served as SVP, group planning director on brands including General Mills (Cheerios, Pillsbury), KitchenAid and P&G (Crest, Head & Shoulders). Prior to that, Plecas had a four-year run at Wunderman as VP, account director/context planner and helped launched Kellogg’s products and worked on AT&T, Sony, DuPont and Xerox.