Most industries have their inefficiencies quietly accepted, passed along from one generation of practitioners to the next as if they were simply part of the territory. Legal case acquisition was one of them. For decades, law firms hunting for mass tort claimants navigated a marketplace of dubious data, inconsistent lead quality, and vendors more interested in volume than validity.
Someone decided to stop accepting that. It took a young Dane with an elite swimmer’s discipline, a law degree, and a deep frustration with broken systems to build something genuinely better.
Resilience in the Water and on the Streets
Sebastian Westerby grew up in Humlebaek, a small city on Denmark’s northeastern coast, where early life did not follow a particularly smooth path. Personal setbacks led him to change schools, and in doing so, he was thrown back on his own resources earlier than most. It was an experience that could have diminished a young person’s confidence. Instead, it sharpened something in him.
He became an elite swimmer during those years, training with the seriousness that competitive sport demands. Waking before dawn, logging meters in the pool while peers were still asleep, learning to lose and recalibrate and return. The water teaches its own kind of lesson: that no single session defines you, that consistency is the only reliable currency, and that the discipline you build in private determines what you can deliver in public.
“One of the lessons that stuck with me early on was the idea that if you want something to exist, you often have to build it yourself.”
Before any boardroom, before any media budget or legal strategy, there was a paper round. Sebastian’s first paid work was distributing copies of Soendagsavisen, the Sunday newspaper, alongside stacks of advertising flyers. Door to door, regardless of weather, regardless of mood. Denmark in the early mornings can be relentlessly grey and cold, and the job did not care.
What those routes built was an understanding that commitment is not contingent on conditions. “When people expect their newspaper, it has to arrive whether you feel like working that day or not,” he says. “Success, whether in business or in life, rarely comes from one big moment. It comes from showing up day after day, doing the work even when no one is watching.”
From Copenhagen to Harvard
Sebastian’s academic path took him to the University of Copenhagen, where he completed a Master of Laws. His thesis examined third-party litigation funding and the privatization of legal process, a topic that sits precisely at the intersection of law and commercial strategy. In 2018, he was selected to study at Harvard Summer School, earning top grades in Law and Psychology and Global Law.
That combination—the behavioral dimension of legal decision-making alongside the structural mechanics of international legal systems—gave him a perspective few practitioners in legal marketing possess. While completing his legal education, he also volunteered at Kobenhavns Retshjælp, Copenhagen’s largest legal aid organization, advising underserved citizens on housing, employment, and family law. That experience grounded his legal knowledge in human reality rather than textbook abstraction.
The path to founding Tort Experts ran through Pulaski Law Firm, one of the leading mass tort practices in the United States, where Sebastian served as Director of Media. He was responsible for managing more than fifteen million dollars per year in advertising spend. It was an education in how legal marketing actually worked, and what that education revealed was not comfortable. The industry was riddled with low-quality data and a structural incentive toward volume over validity.
Redefining the Standards of Tort Experts
Sebastian saw the gap clearly. His legal training meant he understood what law firms actually needed from a claimant. His media expertise meant he understood how to find that claimant efficiently. And his experience in elite sport meant he understood that systems, not luck, were what determined sustainable outcomes.
“Strength gets you to the start. Systems get you to the finish.”
In 2019, he joined Tort Experts as Chief Revenue Officer and Partner, stepping into the CEO role in 2022. The company is built around a different proposition: not leads, but case acquisition systems designed to withstand real scrutiny from intake to resolution. Under his leadership, Tort Experts has facilitated multi-million-dollar case portfolios. Clients speak of outcomes, not promises. One long-standing partner reported filing 71 percent of the cases delivered by the company, an unusually high conversion rate that reflects the quality of the underlying acquisition work.
The Ironman Philosophy: The Long Game
Sebastian is a competitive Ironman triathlete, a feat involving 140.6 miles of swimming, cycling, and running. He does not reference this incidentally; for him, endurance sport and business strategy are animated by the same underlying logic.
“The flashy part is the billion-dollar settlement or the massive TV ad campaigns. But you don’t win the race at the finish line. You win it on Tuesday mornings at 5:00 AM when you’re staring at a pool.”
His personal philosophy is shaped by a principle he returns to often: “Life isn’t about surviving the storm, it’s about learning to dance in the rain.” In business, this means building organizations that can absorb uncertainty. His advice for the next generation is equally grounded: “Focus on building real skills and solving real problems. Don’t chase shortcuts. Build competence, discipline, and integrity. Those compound over time.”
Vision for the Future
Sebastian’s focus in the years ahead is on deepening Tort Experts’ position as the most rigorous and transparent partner in the mass tort marketing space. He is also growing his real estate ventures through Westerby Ejendomme, building a portfolio that reflects the same principles of patient, system-driven growth.
He describes his ambition not in terms of size, but in terms of integrity. In a field that has historically rewarded volume, he is betting that the firms of the future will choose partners on the basis of quality, compliance, and accountability.
Editorial Note
Sebastian Westerby’s journey from cold Danish mornings with a newspaper bag to building one of legal marketing’s most data-driven firms is a study in what happens when discipline meets purpose. His story challenges the assumption that disrupting an industry requires flash or spectacle. Sometimes the most powerful thing a founder can do is simply refuse to accept broken standards.
