SAN FRANCISCO — Pinterest is preparing for its debut on Wall Street with a claim that few other “unicorn” start-ups can make: It is not a financial sinkhole.

While the company is unprofitable, according to an offering prospectus made public on Friday, its losses are nowhere near as high as those of other well-known start-ups like Uber and Lyft, which are also getting ready to list their shares. That makes Pinterest — which lets people create digital “pin boards” — one of the rarer unicorns, a term applied to start-ups valued at more than $1 billion by private market investors.

The deep losses afflicting many high-profile start-ups have cast investor doubts on the herd of companies that are stampeding toward the public market. Lyft recently revealed that it lost $911.3 million last year. Uber previously disclosed that it lost $842 million in the fourth quarter of 2018 alone. PagerDuty, a software start-up valued at $1.3 billion that also filed to go public this week, said in its prospectus that it was losing money. Only Zoom, a video conferencing company last valued at $1 billion, showed that it was making money, in an offering prospectus it filed on Friday.

Pinterest’s filing reported that the company had lost $63 million in 2018. But that was much narrower than a year earlier, when it lost $138 million.