Santtu Seppälä is a Finnish-American finance professional who has attracted public attention largely through his long-standing marriage to actress Sarah Rafferty, best known for playing Donna Paulsen on Suits. Unlike his wife, Seppälä has generally maintained a private life away from the entertainment spotlight. His professional career, however, is substantial in its own right. He has worked in investment management for major financial firms and later founded Kiitos Capital Management, where the company identifies him as Founder and Chief Investment Officer.
The basic public record also shows an interesting connection to film. IMDb lists Santtu Seppälä under Additional Crew and associates him with the 2004 Finnish movie Trench Road. It also confirms that he has been married to Sarah Rafferty since June 23, 2001, and that they have two children.
Quick Bio Information
Full Name: Aleksanteri Olli-Pekka Santtu Seppälä
Known As: Santtu Seppälä
Heritage: Finnish
Professional Field: Finance And Investment Management
Current Publicly Listed Role: Founder And Chief Investment Officer At Kiitos Capital Management
Education: Yale College
Graduate Education: The Wharton School At The University Of Pennsylvania
Yale Degree: Bachelor Of Arts In Ethics, Politics And Economics
MBA: University Of Pennsylvania, Wharton School
Wife: Sarah Rafferty
Marriage Date: June 23, 2001
Children: Two Daughters
Older Daughter: Oona Gray Seppälä
Younger Daughter: Iris Friday Seppälä
IMDb Credit: Additional Crew
Film Connection: Trench Road (2004)
Investment Firm: Kiitos Capital Management
Previous Employers: Morgan Stanley, Salomon Brothers, Lazard Asset Management And Cantillon Capital Management
Professional Base: Beverly Hills, California
Who Is Santtu Seppälä?
Santtu Seppälä is best understood as a finance and investment professional, rather than an actor or traditional Hollywood personality. His public profile became much more recognizable because of his marriage to Sarah Rafferty, but his career predates and exists independently of her television success. Kiitos Capital Management’s official team page identifies Seppälä as the firm’s Founder and Chief Investment Officer and says he manages the Kiitos Global Opportunities portfolio.
His professional history includes positions at several major financial institutions. According to Kiitos Capital Management, he previously worked at Cantillon Capital Management as an analyst and portfolio manager for the Cantillon Health Fund. Before that, he spent five years at Lazard Asset Management researching healthcare stocks for international large-, mid- and small-cap funds. His earlier career also included Morgan Stanley and Salomon Brothers.
Santtu Seppälä’s Background And Finnish Heritage
Much of Seppälä’s private early life isn’t extensively documented in reliable public sources. What is clearer is his connection to Finland. Sarah Rafferty has referred to her husband as being from Finland and has even mentioned hosting Scandinavian-themed gatherings because of his background.
His Finnish heritage is one reason his name and background sometimes attract interest outside the United States. However, readers should be careful with online biography pages that publish highly specific claims about his birth date, parents, childhood and other private details without strong supporting documentation. Those details aren’t established by the strongest sources available, so they shouldn’t be presented as confirmed facts.
What Is Santtu Seppälä’s Full Name?
One of the more interesting details about Santtu Seppälä is his longer name, Aleksanteri Olli-Pekka Santtu Seppälä. Sarah Rafferty’s IMDb biography identifies her husband using this full name.
For readers researching him online, this is useful because different sources may use either Santtu Seppälä or the longer version. The name “Santtu” is the name by which he is most commonly identified publicly, including on IMDb and his professional company profile.
Where Did Santtu Seppälä Study?
Education has played an important role in Seppälä’s career. Kiitos Capital Management says he holds a BA in Ethics, Politics and Economics from Yale College and an MBA from The Wharton School at the University of Pennsylvania.
His education helps explain the direction of his career. Rather than entering the entertainment industry alongside his future wife, Seppälä developed a background combining economics, business and investment analysis. His later work in equity research and portfolio management followed that path closely.
Santtu Seppälä’s Career In Finance
The most substantial part of Santtu Seppälä’s professional story is his career in investment management. His experience includes work at Morgan Stanley, Salomon Brothers, Lazard Asset Management and Cantillon Capital Management before he established Kiitos Capital Management.
His work at Lazard involved researching healthcare stocks for international funds, while his time at Cantillon included both research and portfolio-management responsibilities. Kiitos’ own materials say Seppälä founded the firm in 2008 and had accumulated 17 years of investment experience by the time of a 2016 company white paper.
His Role At Kiitos Capital Management
Today, the most authoritative publicly available professional information comes from Kiitos Capital Management itself. The company lists Seppälä as Founder and Chief Investment Officer and identifies him as portfolio manager for Kiitos Global Opportunities.
This is an important part of understanding who he is. Searches for “Sarah Rafferty husband” often lead with his relationship to the actress, but Seppälä’s professional record shows that he has built a career in investment management independent of Hollywood.
Santtu Seppälä And Trench Road
IMDb lists Seppälä as Additional Crew on Trench Road, a 2004 Finnish film. The movie, known in Finnish as Juoksuhaudantie, was directed by Veikko Aaltonen and based on Kari Hotakainen’s award-winning novel. Its story centers on Matti Virtanen and his attempt to rebuild his family life after a painful separation.
This credit should be understood correctly. Santtu Seppälä is not presented by IMDb as one of the movie’s principal actors. His connection to Trench Road is an Additional Crew credit, which explains why the film appears among the notable credits on his IMDb profile.
How Did Santtu Seppälä Meet Sarah Rafferty?
Santtu Seppälä and Sarah Rafferty reportedly met while they were both associated with Yale University. Rafferty studied acting at Yale School of Drama, while Seppälä pursued his own academic path at Yale College. The couple eventually married in 2001 after dating.
Their different careers have remained a defining feature of their relationship. Rafferty built a public career in acting, while Seppälä developed his professional life in finance. That difference has allowed the couple to maintain distinct professional identities even as they have raised a family together.
When Did Santtu Seppälä Marry Sarah Rafferty?
Santtu Seppälä and Sarah Rafferty married on June 23, 2001, at St. Mary Church in Greenwich, Connecticut, according to USA Network’s profile of the couple and IMDb’s family information.
The marriage has lasted for more than two decades. In 2021, Rafferty marked their 20th wedding anniversary publicly with a photograph from their wedding day and a message celebrating their years together.
Who Is Sarah Rafferty?
Sarah Rafferty is an American actress whose best-known role is Donna Paulsen on the legal drama Suits. She has also appeared in projects including Grey’s Anatomy, Chicago Med and My Life With The Walter Boys. IMDb identifies her as an actress and producer and confirms her marriage to Seppälä.
Her career has naturally made Santtu Seppälä more recognizable to the public. Still, the couple’s professional lives are quite different. Rafferty works in front of cameras, while Seppälä’s career has centered on investment research, portfolio management and business.
Santtu Seppälä’s Children
Santtu Seppälä and Sarah Rafferty have two daughters, Oona Gray Seppälä and Iris Friday Seppälä. IMDb lists both children in Rafferty’s family biography, while PEOPLE has reported their birth dates and additional details shared by their mother.
Oona Gray was born on October 22, 2007, and Iris Friday was born on January 27, 2012. Because the family has generally protected the children’s privacy, there is relatively little reliable public information about their personal lives beyond what Rafferty has chosen to share.
Family Life During The Suits Years
Rafferty’s career required significant travel while Suits was being filmed in Toronto. PEOPLE reports that the family maintained a bi-coastal lifestyle between Los Angeles and Toronto during those years. Rafferty has also described her daughters visiting the Suits set and becoming familiar with the cast and crew.
That experience offers an interesting glimpse into how Santtu Seppälä and Rafferty balanced demanding careers with parenthood. Rafferty has described her husband as an important partner in that process, explaining that they both worked and adjusted their schedules so they could remain present for their children.
Why Does Santtu Seppälä Keep A Low Profile?
Compared with Sarah Rafferty, Santtu Seppälä has a remarkably low public profile. He doesn’t have the same need for public appearances that comes with an acting career, and much of the available information about him comes from professional sources or from interviews in which Rafferty discusses her family.
That privacy is worth respecting. There are many online claims about his age, wealth, childhood and personal interests, but not all of them can be verified through credible sources. A better biography focuses on the information that can actually be supported: his education, investment career, marriage, children and limited entertainment credit.
Where Is Santtu Seppälä Now?
As of 2026, the strongest professional source available publicly continues to identify Santtu Seppälä with Kiitos Capital Management, where he is listed as Founder and Chief Investment Officer.
There is no reliable reason to suggest that he has suddenly become an entertainment personality or abandoned finance. His public identity remains closely tied to investment management, while his relationship with Sarah Rafferty continues to be the main reason general audiences search for his name.
Final Thoughts
Santtu Seppälä is much more than simply “Sarah Rafferty’s husband.” His public story includes an impressive education at Yale and Wharton, years of experience in financial research and portfolio management, senior roles at established investment firms, and the creation of his own investment-management business.
His marriage to Sarah Rafferty has naturally placed him in the public eye, but the couple has largely kept their family life private. They married in 2001 and have two daughters, Oona and Iris. Meanwhile, Seppälä has continued pursuing a career far removed from the spotlight that surrounds his wife.
That combination makes his story particularly interesting. Santtu Seppälä isn’t a Hollywood celebrity trying to build a financial résumé; he’s an investment professional whose personal connection to a well-known actress happens to have made him a subject of public curiosity.
FAQs About Santtu Seppälä
Who Is Santtu Seppälä?
Santtu Seppälä is a finance and investment professional best known publicly as Sarah Rafferty’s husband. He is the Founder and Chief Investment Officer of Kiitos Capital Management and has previously worked at firms including Cantillon Capital Management, Lazard Asset Management, Morgan Stanley and Salomon Brothers.
Who Is Santtu Seppälä’s Wife?
Santtu Seppälä’s wife is actress Sarah Rafferty, best known for playing Donna Paulsen on Suits. The couple married on June 23, 2001, and have two daughters together.
How Many Children Do Santtu Seppälä And Sarah Rafferty Have?
They have two daughters, Oona Gray Seppälä and Iris Friday Seppälä. Oona was born in 2007, while Iris was born in 2012.
What Does Santtu Seppälä Do?
Santtu Seppälä works in investment management. Kiitos Capital Management identifies him as its Founder and Chief Investment Officer and says he manages the Kiitos Global Opportunities portfolio.
Did Santtu Seppälä Attend Yale?
Yes. Kiitos Capital Management states that he earned a BA in Ethics, Politics and Economics from Yale College. He later earned an MBA from The Wharton School at the University of Pennsylvania.
Is Santtu Seppälä An Actor?
No. IMDb lists him under Additional Crew and associates him with the 2004 film Trench Road. That credit does not mean he had a principal acting role. His primary documented career is in finance and investment management.
What Is Santtu Seppälä’s Connection To Trench Road?
IMDb lists Santtu Seppälä as Additional Crew on Trench Road, a 2004 Finnish film directed by Veikko Aaltonen. It is one of the few entertainment-industry credits publicly associated with him.
Where Is Santtu Seppälä Now?
The latest reliable professional information identifies Seppälä with Kiitos Capital Management, where he is listed as Founder and Chief Investment Officer. He continues to maintain a relatively private public profile compared with his wife.
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