Chinese e-commerce giant Alibaba, which filed for an anticipated initial public offering on May 6, is working with three firms as it prepares for a US market debut.

alibabaThe Hangzhou-based company, an Amazon and eBay-like business with revenue of $6.5B over the past nine months, listed the stock offering at the placeholder figure of $1B. 

Yahoo owns a 22.6% stake in Alibaba, which the Wall Street Journal called "China's Internet crown jewel," dubbing the IPO one of the largest stock listings in history.

Sard Verbinnen & Co provides corporate communications counsel for Alibaba in the US with support from New York and San Francisco. It has handled PR for corporate developments over the last five years, including its relationship with Yahoo!, also a Sard Verbinnen client.

Brunswick Group, which has a strong Asia presence, is also on the roster for Alibaba's IPO. Ashley Zandy, a Brunswick alum, in September left Facebook to handle financial and corporate communications for Alibaba outside of mainland China. She is based in its US headquarters in Palo Alto as associate director of international corporate affairs.

And Hill+Knowlton Strategies has worked with the company for more than six years and continues to provide PR counsel on a global basis.

Candice Huang, formerly of Citigate Cunningham and Racepoint Group, leads PR for Alibaba in North America. Former NBC News and CNET producer Julie Huang Tsang is director of international corporate affairs for Alibaba in Hong Kong.