Allbirds, the B Corporation certified Californian brand of footwear and apparel, has filed for a confidential initial public offering (IPO), according to WWD. A confidential IPO filing allows a company to keep details of its business performance and of the terms of the transaction secret until 15 days before the IPO takes place.

In April, the DealBook newsletter of The New York Times wrote that the company was interviewing banks in preparation for an IPO. Allbirds was last valued at around $1.7 billion in a $100 million Series E funding round held in September 2020.