shake shackSizzling burger chain Shake Shack is cooking with ICR for financial communications support as it slates an initial public offering on the New York Stock Exchange.

The 10-year-old company is expanding across the US and abroad from its initial hot dog cart and burger hut in Manhattan's Madison Square Park opened in 2004. Shake Shack, which calls itself the "modern day 'roadside' burger stand," filed Dec. 29 to sell shares to further tap the estimated $72B dine-out burger market.

ICR senior VP Jessica Liddell heads the account advising New York-based Shake Shack's internal PR team led by director of marketing and communications Edwin Bragg.

The company, which has not yet specified how many shares it plans to offer and listed $100M as its IPO ceiling, counts 63 "shacks," including 31 company-operated stands. Revenues topped $78M last year -- net income was $5.4M -- and sales surpassed that mark by the end of the third quarter of 2014.

Union Square Hospitality Group is majority owner of the chain.