CEO of 'bed in a box' start-up Casper on going from zero to a $500 million+ company in 4 years
Courtesy of Capser. Here's how five friends are building the "Nike of sleep." · CNBC

Less than four years ago, direct-to-consumer mattress company Casper didn't even exist. In the summer of 2013, would-be cofounders Philip Krim, Jeff Chapin, Neil Parikh, Luke Sherwin and Gabriel Flateman were just five guys randomly assigned to sit together at a start-up accelerator in New York City.

Now, Casper just may be on its way to unicorn status. In its latest fundraise in May, the company reportedly received $75 million from retail giant Target, in a round expected to reach $100 million. Though the terms were undisclosed, the money pushes the company beyond the $500 million valuation it received with its $55 million series B raise in 2015.

Recently, Krim talked to podcast Connections by Exact about memorable moments along the way.

How it all started

Casper CEO Philip Krim says the "stars aligned," for the co-founders to meet. Parikh, Sherwin and Flatemen knew each other – they had started an e-commerce company together. When Krim and Chapin sat with them at that N.Y.C. accelerator, they all became friends and started comparing notes, says Krim on the podcast.

As it turned out, Krim, Parikh and Chapin had something in common – the sleep industry.

Krim had founded The Merrick Group, and its two largest websites were AngelBeds.com and SleepBetterStore.com. Parikh's father was a sleep doctor with direct access to the experts. Jeff Chapin, an industrial designer and engineer, had worked at IDEO designing, among other things, mattresses.

Flateman and Sherwin had other important business expertise: Flateman knew e-commerce, and Sherwin, having worked Saatchi & Saatchi and Thrillist, had a background in media and brand building.

Random perhaps, but certainly serendipitous. The five banded together to disrupt a $14 Billion industry by designing a single, affordable "mattress in a box" consumers could easily buy online and have shipped to their homes.

How they became "Casper"

The name "Casper" has "nothing to do with" the friendly ghost, says Krim on podcast Connections. Instead, inspiration came from co-founder Sherwin. His roommate at the time was a six-foot-six German guy named Kasper, who slept on a twin mattress.

"He did not fit on the mattress at all" says Krim, which gave the team a good laugh.

Krim and his co-founders had set an arbitrary deadline to name the company, and despite lots of ideas, they kept on returning to "Kasper." Eventually they went with Casper (with a C).

Fundraising and pushing past doubts

Krim's vision was to build a company that would revolutionize sleep — a gargantuan task that the founders believed would require backing from the best technology investors.