Sami Inkinen

In the summer of 2014, somewhere in the middle of the Pacific, Sami Inkinen got word that Trulia - the real estate marketplace he'd co-founded and taken public two years earlier - had agreed to merge with Zillow. He was 1,000-odd miles from the nearest shore, in a two-person rowboat with no support vessel, taking 12-hour shifts at the oars with his wife.

Most founders celebrate an exit with champagne. Inkinen celebrated by keeping his blisters in the water for another two weeks. He and Meredith Loring, neither of whom had ever rowed competitively, were 2,750 miles into a crossing from Monterey, California to Honolulu that would set a two-person Pacific speed record and make Inkinen the first Finnish person to row across any ocean. They called it the Fat Chance Row, and the name was a dare aimed at sugar.

The row was not a midlife stunt. It was an argument made with oars. A few years earlier, Inkinen - a triathlon age-group world champion training north of ten hours a week - had discovered he was pre-diabetic. He had been eating exactly what he'd been told to eat: low fat, lots of grains, plenty of what the labels called healthy. His own body, the most measured machine he owned, was telling him the official story was wrong. So he and Loring crossed an ocean fueled largely by fat to prove a hypothesis about human metabolism, raising more than $300,000 for nutrition research along the way.

That contradiction - elite athlete, broken blood sugar - is the seed of everything he has built since. Today Inkinen is co-founder and CEO of Virta Health, a company whose stated mission is to reverse metabolic disease in one billion people using nutrition, technology, and AI. It has been valued at roughly $2 billion, was named to the TIME100 Most Influential Companies list in 2023, and crossed $160 million in annualized revenue in 2025 while growing more than 80% year over year. Inkinen has said the company expects to be ready for an IPO.

Virta's pitch is unusual in healthcare: it would rather take the conventional diet apart than treat its symptoms forever. As employers groan under the cost of GLP-1 weight-loss drugs, Virta has gone the other direction - publishing data that it cut GLP-1 use for weight loss by more than half while keeping outcomes durable, and then doing something almost nobody in the industry dares to do. It put money on the line. Virta launched cost guarantees promising payers a 0% GLP-1 utilization trend and guaranteed weight loss, with claims-based ROI. Miss the number, refund the customer.

It is a very Inkinen move: state a measurable outcome out loud, then make yourself accountable to it. "If you can measure it, you can improve it" is less a slogan than his operating system. He is, by his own cheerful admission, an "incurable data geek" who keeps spreadsheets on nearly every domain of his life. The man who treats a marriage-tested ocean crossing as an experiment is the same one who runs a company on guaranteed outcomes.

The path there was anything but linear. Inkinen started his working life as a radio chemist at a Finnish nuclear power plant and served in the country's military reconnaissance forces. He earned a master's in engineering physics from the Helsinki University of Technology, then collected stints at Nokia, Microsoft, and McKinsey before landing at Stanford for an MBA. Trulia came out of that Silicon Valley moment - a marketplace that helped ordinary people see the housing market clearly, taken from idea to IPO and eventually folded into Zillow in a deal valued in the billions.

He could have stopped there. Plenty do. Instead he treated a successful exit as runway for a harder problem. Where Trulia made real estate legible, Virta is trying to make metabolism legible - to take a condition that medicine has long called chronic and progressive and ask, with a straight face, whether it can be reversed. Founded in 2014 with researchers Dr. Stephen Phinney and Dr. Jeff Volek, Virta paired clinical rigor with continuous remote care, betting that the right data and the right coaching could undo what the standard diet did.

Inkinen is candid about the cost of building it. On founder podcasts he has warned that "tying your identity to your company is the most dangerous thing," and recalled that the two weeks following Trulia's IPO were among the worst of his life - the anticlimax of reaching a summit you mistook for the meaning. His counter-mantra is blunt: startups only fail when founders stop trying. Coming from a man who rowed through a hurricane warning to finish a crossing, it reads less like a motivational poster and more like a description of how he is wired.

What makes him worth watching is not the resume, impressive as it is. It's the through-line. Endurance athlete, ocean rower, data obsessive, contrarian about received wisdom - every one of those traits points at the same conviction: that the human body is improvable, that conventional advice deserves a hard look, and that the only honest way to make a claim is to measure whether it came true. He's still rowing, in other words. The boat just got bigger.