Santtu Seppala was born on December 6, 1974, and holds American nationality. He works as a financial analyst and investment executive.
Santtu is also known publicly as the husband of actress Sarah Rafferty.
Who is Santtu Seppala?
Santtu Seppala, born Aleksanteri Olli-Pekka Seppala, built a career in investment management long before he became known publicly. He has worked across several major financial firms over the past three decades.
He currently serves as Chief Investment Officer of Kiitos Capital Management. Along with that role, he has held senior positions at firms including the Angeleno Group and Staxxon.
Santtu is married to actress Sarah Rafferty, known for playing Donna Paulsen on the USA Network series Suits. The couple met as students at Yale University in the 1990s.
Early Life of Santtu Seppala
Santtu Seppala was born in Illinois to Finnish parents. His father, Antti V. Seppala, worked as an independent consultant in the pharmaceuticals industry in Lake Forest, Illinois.
His birth name is Aleksanteri Olli-Pekka Seppala. Santtu is a Finnish shortened form of Aleksanteri, and his family used it as his everyday name from childhood.
He grew up with strong ties to Finland despite being born in the United States. That dual background later shaped both his early national service and his approach to his career.
Santtu Seppala Age
Santtu Seppala is 51 years old as of 2026, born on December 6, 1974. His zodiac sign is Sagittarius.
He was a college student at Yale when the decade turned to the 1990s. By his late twenties, he had already built several years of experience in finance before he married Sarah Rafferty in 2001.
Seppala is a nice man with both a physical and professional personality. He stands around 5 feet 6 inches taller in height, which is equal to 170 centimeters or 1.70 meters.
Besides this, if we talk about his weight, he might be standing somewhere around 70 kg, which is equal to 154 lbs in pounds.
Santtu Seppala Ethnicity and Nationality
Santtu Seppala holds American nationality, having been born in Illinois. His ethnic background is Finnish, tracing directly to his parents, who were both born and raised in Finland.
He also completed a year of national service with the Finnish Defence Force after college. That service reflected his continued connection to his family’s home country, even while building his career in the United States.
Santtu Seppala Education
Santtu Seppala attended Yale University, where he studied ethics, politics, and economics. He graduated with his bachelor’s degree in 1993.
While at Yale, he played on the varsity tennis team. He later went on to earn an MBA from the Wharton School at the University of Pennsylvania.
His education gave him a direct path into investment banking. Shortly after graduating from Yale, he began his first job in finance in New York City.
Santtu Seppala Career
Early Career in Finance
Santtu Seppala started his career as a financial analyst at Salomon Brothers in New York, joining the firm in 1993. He worked there for about two years before returning to Finland.
Between 1995 and 1996, he completed a year of service with the Finnish Defence Force. After that service, he returned to finance and joined Lazard Asset Management as an analyst, where he worked for roughly five years.
Building an Investment Career
Following his time at Lazard, Seppala moved into portfolio management. He worked at Cantillon Capital Management before taking on a leadership role at Kiitos Capital Management.
At Kiitos, he serves as Chief Investment Officer, overseeing investment strategy for the firm. Along with this role, he has held the position of Vice President of Strategy and Business Development at the Angeleno Group.
Recent Work
Seppala has also worked with Staxxon as Chief Strategy Officer and a member of its management committee. His work with Staxxon reflects his continued interest in business strategy alongside investment management.
He has kept a low public profile throughout his career. Unlike his wife, Seppala has stayed out of the entertainment industry entirely, focusing instead on his work in finance.
Santtu Seppala Wife
Santtu Seppala is married to actress Sarah Rafferty. The couple met as students at Yale University, where Rafferty was earning her MFA in acting while Seppala completed his undergraduate degree.
They dated for several years before marrying. Seppala and Rafferty held their wedding on June 23, 2001, at the Roman Catholic Church of St. Mary in Greenwich, Connecticut.
The couple has remained married for more than two decades. Rafferty has spoken publicly about their relationship, including sharing anniversary tributes to her husband on social media.
Santtu Seppala Children
Santtu Seppala and Sarah Rafferty have two daughters together. Their older daughter, Oona Gray, was born in 2007, and their younger daughter, Iris Friday, was born in 2012.
The family has largely kept the children out of the public eye. Rafferty has occasionally shared family moments publicly, but the couple has generally protected their daughters’ privacy.
Santtu Seppala Net Worth
Santtu Seppala’s estimated net worth is $10 million as of 2026. His income comes from his work in investment management, including his role at Kiitos Capital Management.
His career across multiple investment firms, including Salomon Brothers, Lazard Asset Management, and Cantillon Capital Management, has built his financial standing over more than three decades.
The Bottom Line
Santtu Seppala built a finance career spanning Salomon Brothers, Lazard Asset Management, and Kiitos Capital Management, where he now serves as Chief Investment Officer. He also holds a senior role at the Angeleno Group.
He grew up in Illinois with Finnish parents and later completed a year of service with the Finnish Defence Force. Seppala met his wife, actress Sarah Rafferty, at Yale University in the 1990s.
Seppala continues his work in investment management while raising two daughters with Rafferty. The couple marked more than two decades of marriage in 2021.
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