engaged Brunswick Group for PR counsel through the Silicon Valley company's successful initial public offering this week.

The Mountain View-based provider for discount vouchers sold 10.5M shares at $16 a piece to surpass a $1B overall valuation. Its shares started trading today on the New York Stock exchange as COUP and soared 80% in morning trading.

Darren McDermott, a 17-year Wall Street Journal alum who joined Brunswick as a director in 2012, is working the account., which had 2013 revenue of $167.9M, in January recruited CNET News editor-in-chief Paul Sloan as VP of corporate communications.