CP+B added creative directors Sesh Moodley, Matthew Elhardt and Avital Pinchevsky to its Boulder office.

Richard Blakeley was named director of digital products & strategy for The Week and Mental Floss; Jamie Altschul as national advertising director; Tracy Monahan as marketing director; and Erica Berger as editorial product manager.

Brand Arc promoted executive producer Mike Davis to COO, a newly created position, and awarded a new title to Rob Donnell, now CEO and founder.

Havas Worldwide Chicago has appointed Jason Peterson to the role of co-president. Peterson will continue in his role as chief creative officer.

iostudio named Scott Turner as research and planning director.

SHIFT named Paul Ollinger as president. Ollinger most recently served as vice president of sales for Facebook’s west region.

Brownstein Group launched Nucleus Digital, a creative shop that will be headed by Adam Deringer, current chief marketing officer and former chief digital officer at Brownstein Group. He will assume the new title of partner/general manager of Nucleus Digital.

RichRelevance named Zach Koekemoer as chief financial officer.

Michelle Wright has been promoted to vice president, east coast sales and brand champion for E!, Style, EsquireTV, and TV Without Pity. Wright is responsible for all TV360 sales efforts for the respective brands.

LinkedIn has named David Thacker vice president of marketing solutions products. Most recently, Thacker served as vice president of product at Groupon, where he was responsible for their personalization and merchandising technology.