Casper, the buzzy sleep startup that ignited the online mattress-shopping craze, has filed to go public

• Sleep startup Casper is going public.
• The company filed paperwork with the US Securities and Exchange Commission to start trading on the New York Stock Exchange.
• Casper did not say how much money it planned to raise in the offering or the valuation it is seeking.
• Casper sells mattresses and other sleep-related products directly to consumers.
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Casper, the online mattress retailer, has filed to go public.

On Friday, the buzzy sleep startup filed paperwork with the US Securities and Exchange Commission to start trading on the New York Stock Exchange. It plans to list its common stock under the ticker symbol "CSPR."

The filing said Casper saw an increase in net losses of $92.1 million in 2018 from $73.4 million in 2017.

The startup's net revenue of $357.9 million in 2018 was also up from $259.9 million in 2017.

The mattress company has raised $355 million to date and was last valued at $1.1 billion.

This story is developing.