Oona Gray Seppala, more accurately styled Oona Gray Seppälä, is the elder daughter of Suits actress Sarah Rafferty and financial executive Santtu Seppälä. She was born on October 22, 2007, and has a younger sister named Iris Friday Seppälä.
Although Oona grew up around her mother’s television career, she has not pursued a documented professional acting career. Instead, public school records show that she developed interests in journalism, multimedia production, tennis, music and community service.
Oona joined her school newspaper in 2022 and later became its editor-in-chief. Moreover, she founded Rhythms for Residents, an organisation that uses musical performances to build connections with assisted-living residents.
She graduated from high school in 2026. However, reliable sources have not publicly confirmed her next college, current employment or long-term career plans.
Oona Gray Seppala at a Glance
| Detail | Best-supported information |
|---|---|
| Full name | Oona Gray Seppälä |
| Common spelling | Oona Gray Seppala |
| Known for | Sarah Rafferty and Santtu Seppälä’s daughter |
| Birth date | October 22, 2007 |
| Age | 18 as of July 2026 |
| Mother | Sarah Rafferty |
| Father | Santtu Seppälä |
| Sister | Iris Friday Seppälä |
| High-school graduation | 2026 |
| School media role | Former editor-in-chief of The Oracle |
| Sport | Varsity tennis |
| Community work | Founder of Rhythms for Residents |
| Acting career | No verified professional acting credits |
| Current college | Not publicly confirmed |
| Verified personal Instagram | None clearly authenticated for public use |
| Public profile | Limited and largely private |
Who Is Oona Gray Seppala?
Oona Gray Seppala is Sarah Rafferty’s first child with her husband, Santtu Seppälä.
People’s profile of Sarah Rafferty’s children confirms that Oona was born on October 22, 2007. The couple later welcomed their second daughter, Iris, in January 2012.
Oona’s public identity initially came from occasional family photographs and Rafferty’s interviews about motherhood. However, she later created a public body of work through student journalism, multimedia reporting and personal commentary.
Consequently, describing her only as a “celebrity daughter” overlooks the activities she documented under her own name.
Is Her Name Oona Gray Seppala or Oona Gray Seppälä?
Both versions refer to the same person.
Seppälä is the spelling that includes the Finnish letter “ä,” while Seppala removes the accent for English-language keyboards, web addresses and search engines.
People uses Oona Gray Seppälä in its updated family profile. Meanwhile, her school publication generally displays her name as Oona Seppala without the accents.
Therefore, publishers may use the target keyword Oona Gray Seppala while introducing the properly accented form early in the article.
How Old Is Oona Gray Seppala?
Oona was born on October 22, 2007. Therefore, she is 18 years old as of July 2026.
People confirmed both her full birth date and her age in its January 2026 update. The publication traced the date to a birthday post Sarah Rafferty shared when Oona turned 13 in 2020.
Unlike many private celebrity relatives, Oona’s birthday has support from a first-party family post and established editorial coverage. As a result, it does not require the same uncertainty warning as unsupported dates found on biography websites.
Who Are Oona Gray Seppala’s Parents?
Oona’s parents are Sarah Rafferty and Aleksanteri Olli-Pekka “Santtu” Seppälä.
The couple married on June 23, 2001, after meeting through Yale. They welcomed Oona in 2007 and Iris in 2012. USA Network’s Sarah Rafferty family profile confirms the marriage and identifies both daughters.
Although Sarah works in entertainment, Santtu has maintained a quieter professional profile. Public reporting describes him as a finance and business executive rather than an actor or television personality.
Who Is Oona Gray Seppala’s Mother?
Sarah Rafferty is an American actress best known for playing Donna Paulsen in the legal drama Suits.
She has also appeared in productions including Grey’s Anatomy, Chicago Med and My Life with the Walter Boys. However, Rafferty has often described motherhood as a central part of her life.
In an interview cited by People, she said that her life revolved around her children and expressed gratitude for having Oona and Iris. Moreover, earlier interviews described the sisters as affectionate, outgoing and close to one another.
Rafferty occasionally shares family photographs. Nevertheless, she does not turn her daughters’ private relationships, school routines or daily lives into regular promotional content.
Who Is Oona Gray Seppala’s Father?
Oona’s father is Santtu Seppälä, whose full name is Aleksanteri Olli-Pekka Seppälä.
USA Network reports that his family came from Finland, although he grew up in Illinois. It also states that he attended Yale University and later earned an MBA from the Wharton School of the University of Pennsylvania.
Santtu has supported Oona’s community and musical work. For example, a photograph accompanying one of Oona’s school commentaries credits him as the photographer, while Oona described her father as helping transport equipment during her early volunteering performances.
However, articles should avoid publishing claims about his finances, salary or private investments unless an official professional source confirms them.
Does Oona Gray Seppala Have a Sister?
Yes. Oona has one younger sister, Iris Friday Seppälä.
Iris was born on January 27, 2012. People identifies Oona and Iris as Sarah Rafferty and Santtu Seppälä’s two children.
The sisters appear to share a close relationship. In Oona’s commentary about being an older sister, she explained that caring for her younger sister helped her develop patience, responsibility, communication and leadership skills.
The article’s family photograph carries a credit to Sarah Rafferty, which also helps establish that the school writer and the actress’s daughter are the same Oona Seppala.
Where Did Oona Gray Seppala Go to School?
Oona attended the Archer School for Girls in Los Angeles and graduated in 2026.
Her public author profile on the school’s student-news website documents several years of involvement in journalism, sport, music and service. Oona Seppala’s official Oracle staff page states that she joined the publication in 2022 and graduated in 2026.
Earlier in her childhood, Oona also experienced a two-city routine because Suits filmed in Toronto while her family maintained ties to Los Angeles.
People reports that she attended schools in both locations during that period. Sarah Rafferty later said that the arrangement became a confidence-building experience for her daughter.
Did Oona Gray Seppala Graduate in 2026?
Yes. Her school publication states that Oona graduated in 2026.
A May 2026 editor’s letter also showed Oona and her co-editor reflecting on their work as graduation approached. The publication’s contributor biography subsequently changed to the past tense and stated that she had graduated.
However, the school profile does not name the college she plans to attend. Therefore, websites should not assign her a university based on an unverified social post, another student with the same name or an unsupported biography page.
Is Oona Gray Seppala a Journalist?
Oona has documented experience as a student journalist, editor and multimedia contributor.
She joined The Oracle in 2022, became a senior reporter in 2023, moved into a multimedia-editor role in 2024 and became editor-in-chief in 2025. She continued publishing reporting, reviews, opinion pieces, podcasts and multimedia work through her final school year.
Her published subjects included:
- Student life
- Culture and entertainment
- Social issues
- Education
- Community events
- Mental health
- Volunteering
- Music
- Sports
- Media literacy
However, a strong student publication record does not automatically establish her current professional occupation. Until Oona confirms a university programme or paid journalism role, the accurate description remains former student editor and journalist.
What Was Oona’s Role at The Oracle?
Oona ultimately served as co-editor-in-chief.
Before reaching that position, she gained experience in reporting and multimedia production. Her author archive contains written articles, graphic illustrations, videos, interviews, podcasts and editorial-board work.
Moreover, her progression shows a sustained commitment rather than a single guest article:
| Year | Publicly documented role |
| 2022 | Joined The Oracle |
| 2023 | Senior reporter |
| 2024 | Multimedia editor |
| 2025–2026 | Editor-in-chief |
| 2026 | Graduated |
Therefore, articles should not inaccurately label her a professional news reporter, but they can recognise her substantial school-journalism experience.
What Is Rhythms for Residents?
Rhythms for Residents is a community-service initiative that uses live music to connect student performers with people living in assisted-care communities.
Oona wrote that she founded the project in 2021. Initially, she wanted more piano-performance experience while giving something back to her community. However, conversations with residents gradually became as meaningful to her as the performances themselves.
She expanded the initiative to include other student musicians in 2024. Oona’s commentary about Rhythms for Residents describes that development in her own words.
The Rhythms for Residents website states that the organisation aims to combat social isolation and encourage intergenerational relationships through musical performances.
Does Oona Gray Seppala Play Music?
Oona’s public writing indicates that she plays piano and has performed for assisted-living residents.
She also participated in her school’s a cappella group. In addition, her staff biography lists music alongside journalism, service and tennis as a significant part of her school experience.
However, no reliable source identifies her as a professional musician, recording artist or signed performer.
Therefore, articles should describe music as one of her documented interests rather than as an established entertainment career.
Did Oona Gray Seppala Play Tennis?
Yes. Her school biography states that she played on the varsity tennis team.
A separate student-sports article reported that she had started playing tennis at age three and discussed the challenge of balancing schoolwork with practices.
Nevertheless, no reliable public source currently presents Oona as a professional, collegiate or nationally ranked tennis player.
Her school participation shows a longstanding interest in the sport, but publishers should not extend it into unsupported scholarship or professional-career claims.
Did Oona Gray Seppala Appear in Suits?
No established cast or production record confirms that Oona acted in Suits.
She and Iris visited the set while their mother filmed the series. People reports that the girls enjoyed visiting the craft-services area, hair-and-makeup trailer and costume fittings. They also sometimes called “action” and “cut” during visits.
However, visiting a set does not create an acting credit.
Consequently, publishers should distinguish between:
- Spending time on the Suits set
- Appearing in private behind-the-scenes photographs
- Performing in a credited television role
No reliable source establishes the third point.
Is Oona Gray Seppala an Actress?
No verified professional filmography currently identifies Oona Gray Seppala as an actress.
Her mother works in television, and Oona spent time around productions as a child. Nevertheless, her own documented public activities centre on journalism, music, volunteering and tennis.
She may eventually explore acting or another creative field. However, no dependable source confirms that she has signed with an agency, appeared in a professional production or announced acting as her career.
Does Oona Watch Suits?
People reports that Sarah Rafferty’s daughters did not regularly watch Suits, despite spending time around the production and forming relationships with cast members and their families.
Rafferty said that her daughters connected more easily with My Life with the Walter Boys, a series in which she plays a mother.
However, those comments describe the sisters generally. Therefore, an article should not assign every reaction specifically to Oona unless the source names her.
What Is Oona Gray Seppala Doing Now?
Oona completed high school in 2026 after serving as an editor-in-chief, varsity tennis player, musician and community volunteer.
However, no strong public source reviewed for this profile confirms:
- Her college destination
- Her university subject
- A current employer
- A professional journalism position
- A formal entertainment project
- A new public business
Her school profile simply states that she graduated in 2026.
Therefore, the accurate answer is that Oona has completed high school, while her next educational or professional step remains private.
Is Oona Gray Seppala Going to Yale?
No reliable source reviewed for this article confirms that Oona Gray Seppala will attend Yale University.
Search results can produce college announcements involving other students named Oona Seppala or loosely sourced social posts. Moreover, Sarah Rafferty and Santtu Seppälä both have connections to Yale, which may encourage assumptions.
However, a family connection with a university does not establish Oona’s enrolment.
Until Oona, her family, her school or a university announces her destination, publishers should avoid naming a college.
Does Oona Gray Seppala Have Instagram?
No clearly authenticated public personal Instagram account for Oona has received confirmation from a strong editorial or first-party source.
Her school publication has an institutional social-media presence, while Rhythms for Residents also links to social content. However, those pages do not necessarily represent a personal account.
In addition, Sarah Rafferty has shared photographs of Oona on her own verified profile. A photograph appearing on a parent’s page does not mean that the child maintains a public account.
Therefore, publishers should not link a private or same-name profile without direct authentication.
Is Oona Gray Seppala on TikTok or X?
No reliable source has clearly verified a public personal TikTok or X account belonging to Oona.
Matching usernames may belong to:
- Another person named Oona Seppala
- A fan page
- A school-related page
- A private personal account
- An impersonator
- An inactive profile
Consequently, an account should not become part of her biography unless Oona or a trusted source confirms its ownership.
Is Oona Gray Seppala Dating Anyone?
Oona has not publicly confirmed a romantic relationship through a reliable source.
Biography websites may add “boyfriend,” “dating” or “relationship status” sections because users search those terms. However, no authenticated interview or public announcement supports such claims.
Moreover, her parents’ careers do not make her personal relationships public information.
Therefore, articles should not label her single, dating, engaged or married.
What Is Oona Gray Seppala’s Net Worth?
No reliable financial source documents Oona’s individual net worth.
She has not announced a professional acting contract, major company, paid media role or other public source of substantial income. Consequently, online net-worth figures usually come from assumptions about Sarah Rafferty and Santtu Seppälä’s finances.
A parent’s earnings do not reveal what an adult child personally owns.
An accurate financial estimate would require evidence involving Oona’s:
- Income
- Business interests
- Investments
- Property
- Debts
- Contracts
- Trust arrangements
No dependable public disclosure provides those details.
How Tall Is Oona Gray Seppala?
No authoritative public source confirms Oona’s height, weight or body measurements.
Celebrity-biography pages often publish physical statistics without identifying where they obtained them. In addition, photographs cannot provide an accurate measurement because camera angles, footwear and perspective distort apparent height.
Such details also add little value to a profile centred on her education, journalism and community work.
Where Does Oona Gray Seppala Live?
Reliable current sources do not confirm Oona’s exact residence.
During her childhood, the family divided time between Los Angeles and Toronto because Sarah Rafferty filmed Suits in Canada. People reports that this arrangement also meant Oona attended two schools during that period.
However, a childhood schedule does not establish her current home, university address or travel routine.
Articles should avoid publishing private location details.
Are Verified Pictures of Oona Gray Seppala Available?
People includes photographs that Sarah Rafferty originally shared through her verified Instagram account. The captions identify Oona, Iris and other family members.
Oona’s school publication also carries author photographs and images connected with her articles. Several captions identify her directly, while family-related images credit Sarah Rafferty or Santtu Seppala.
However, identity confirmation does not automatically grant publishing permission.
Before uploading a picture to WordPress, check:
- Who owns the image.
- Whether the source allows commercial reuse.
- Whether an editorial licence is required.
- Whether the caption accurately names everyone shown.
- Whether the image came from a private social account.
- Whether using an older childhood photograph remains appropriate.
Common Errors About Oona Gray Seppala
Calling her an actress
No verified production credits establish a professional acting career.
Saying she appeared in Suits
She visited the set, but no reliable cast list gives her an acting role.
Naming an unconfirmed university
Her school profile confirms graduation in 2026 but does not name her next institution.
Assigning her a net worth
No public financial disclosure supports an exact figure.
Publishing body measurements
No authoritative profile confirms her height, weight or measurements.
Linking a random Instagram account
A matching name does not prove ownership.
Treating her only as a celebrity child
Her published journalism, editorial leadership and service work provide a documented record of her own activities.
Confusing Oona with Iris
Oona is the elder sister, born in October 2007. Iris was born in January 2012.
Frequently Asked Questions
Who is Oona Gray Seppala?
Oona Gray Seppala is the elder daughter of actress Sarah Rafferty and financial executive Santtu Seppälä. She also has a younger sister named Iris.
When was Oona Gray Seppala born?
She was born on October 22, 2007.
How old is Oona Gray Seppala?
Oona is 18 years old as of July 2026.
Who is Oona Gray Seppala’s mother?
Her mother is Sarah Rafferty, the actress best known for playing Donna Paulsen in Suits.
Who is Oona Gray Seppala’s father?
Her father is Santtu Seppälä, a finance and business executive with Finnish family roots.
Does Oona Gray Seppala have siblings?
Yes. She has a younger sister named Iris Friday Seppälä, born in January 2012.
Where did Oona Gray Seppala go to school?
Her public student-journalism profile connects her with the Archer School for Girls. She graduated in 2026.
Was Oona an editor-in-chief?
Yes. She became an editor-in-chief of The Oracle in 2025 after previously working as a reporter and multimedia editor.
What is Rhythms for Residents?
It is a service initiative founded by Oona that uses musical performances to connect volunteers with assisted-living residents.
Does Oona Gray Seppala play tennis?
Her school profile states that she played varsity tennis.
Is Oona Gray Seppala an actress?
No reliable source confirms a professional acting career or screen credits.
Did Oona appear in Suits?
No verified cast record lists her. She visited the set with her family but did not receive a documented acting credit.
Where is Oona going to college?
No dependable public source currently confirms her college destination.
Does Oona Gray Seppala have Instagram?
No clearly authenticated public personal account has received reliable confirmation.
What is Oona Gray Seppala’s net worth?
Her individual finances remain private, and no trustworthy source supports an exact figure.
Conclusion
Oona Gray Seppala is the elder daughter of Sarah Rafferty and Santtu Seppälä. She was born in October 2007 and grew up alongside her younger sister, Iris, while her mother worked on productions including Suits.
However, Oona has also developed a public record independent of her mother’s acting career. She spent several years working in student journalism, eventually became an editor-in-chief and contributed written, visual and multimedia reporting.
Moreover, she played varsity tennis, participated in music and founded Rhythms for Residents to bring student performances into assisted-living communities.
Oona graduated in 2026. Nevertheless, reliable sources have not confirmed her college, current profession, romantic life, personal social-media accounts or net worth.
Therefore, an accurate biography should recognise her documented journalism and community work while respecting the parts of her adult life that she has kept private.
