Clara Stack is a young American actress best known for playing Young Kate Bishop in Marvel’s Hawkeye, Rose in Disney’s The Naughty Nine, and Lilly Bainbridge in HBO’s IT: Welcome to Derry. Born and raised in New York City, she began performing in theatre at age four and has since built a fast-rising screen career across major studios including Marvel, Disney+, and HBO. Fans often search for details about her age, family, and twin sister Maggie.
Clara Stack Biography
| Field | Details |
| Full name | Clara Stack |
| Nickname | Clara |
| Gender | Female |
| Date of birth | October 19, 2010 |
| Age | 15 years old (as of June 2026) |
| Place of birth | New York City, New York, USA |
| Current residence | New York, USA |
| Nationality | American |
| Ethnicity | Mixed (not publicly confirmed) |
| Zodiac sign | Libra |
| Religion | Not publicly disclosed |
| Sexual orientation | Not disclosed (minor) |
| Height | Approx. 4 ft 4 in (1.33 m) |
| Weight | Approx. 66 lbs (30 kg) |
| Hair colour | Dark brown |
| Eye colour | Brown |
| Marital status | Single (minor) |
| Spouse | N/A |
| Children | None |
| Parents | Eoin Stack (father), Amanda Stack (mother) |
| Siblings | Maggie Stack (twin sister) |
| Alma mater | Private/homeschooled (details kept private) |
| Profession | Actress |
| Years active | 2014–present |
| Famous roles | Young Kate Bishop, Rose, Lilly Bainbridge |
| Net worth | $500,000 – $1 million (estimated) |
| @clarastacknyc |
Who is Clara Stack?
Clara Stack is an American child actress from New York City who first stepped onto a stage at the age of four. She is widely recognised for portraying the young version of Hailee Steinfeld’s character, Kate Bishop, in Marvel Studios’ Hawkeye on Disney+. Her work spans Broadway-style theatre, network television, and big-budget streaming productions.
She has appeared in popular series such as Madam Secretary, Bull, Almost Family, and The Marvelous Mrs. Maisel. Younger viewers know her best as Rose, the animal-loving heist kid in the 2023 Disney Original Movie The Naughty Nine. In 2025, she landed a leading role as Lilly Bainbridge in the HBO horror series IT: Welcome to Derry.
How old is Clara Stack? Age and birthday
Clara Stack is 15 years old as of June 2026. She was born on October 19, 2010, in New York City, United States.
Her zodiac sign is Libra, a sign often linked with charm, creativity, and balance — qualities that fans say come through in her on-screen performances. She will turn 16 in October 2026.
How tall is Clara Stack? Height, weight and body features
Clara Stack stands approximately 4 feet 4 inches (about 1.33 metres) tall and weighs around 66 lbs (30 kg). These figures are estimates and may change as she is still growing.
She has dark brown hair and warm brown eyes that suit the wide range of characters she has played, from superhero sidekick to small-town horror lead. Detailed body measurements are not published, which is appropriate given that she is a minor.
Family background: Who are Clara Stack’s parents and siblings?
Clara is the daughter of Eoin Stack and Amanda Stack, who have supported her acting work since she was a toddler. Her parents prefer a quiet life away from the spotlight and rarely appear in public coverage of her career.
The most-loved fact about her family is that she has an identical twin sister named Maggie Stack. Clara has called Maggie her best friend, and the pair are often seen together at family-friendly events and in behind-the-scenes posts on Instagram.
Education and early life
Born and raised in New York, Clara grew up surrounded by the city’s theatre culture, which sparked her love for performance at a very young age. Specific details about her schooling are kept private for safety reasons, but she is reported to follow a flexible learning schedule that fits around filming.
Her early life balanced classroom learning with rehearsal rooms. By the time she landed her first on-screen role at age eight, she had already spent four years working in live theatre productions.
Clara Stack’s career
Theatre beginnings
Clara started acting at age four in local New York stage productions. She played Star to Be in Annie, Amaryllis in The Music Man, and the title role in a New York staging of Matilda the Musical.
These early stage roles gave her a strong foundation in timing, voice work, and live audience performance — skills that helped her switch smoothly into screen acting a few years later.
Television breakthroughs
Her on-screen debut came around the age of eight in CBS political drama Madam Secretary. She went on to appear in Bull, Almost Family, and Amazon’s The Marvelous Mrs. Maisel during its first season.
In 2021, she landed her breakout role as Young Kate Bishop in Marvel’s Hawkeye on Disney+, playing the childhood version of Hailee Steinfeld’s superhero character. The series brought her global attention and Marvel fan-base recognition almost overnight.
Film and recent projects
In 2023, Clara starred as Rose in the Disney+ holiday film The Naughty Nine, playing an animal-loving member of a kid-led heist crew. Her warm performance helped the film become one of Disney’s most-watched original movies that holiday season.
In 2025, she took on her biggest role yet as Lilly Bainbridge in HBO’s IT: Welcome to Derry, the prequel series to Stephen King’s IT. The show’s 2025 season finale gave her wide critical praise for handling demanding emotional and horror material at age 15.
What is Clara Stack’s net worth?
As of 2026, Clara Stack’s net worth is estimated at between $500,000 and $1 million. The figure reflects her steady run of paid screen roles from age eight onward across CBS, Disney+, Amazon Prime, and HBO.
Income sources
Her main income comes from acting fees for studio and network productions. Smaller earnings likely come from residuals on streaming hits such as Hawkeye and The Naughty Nine, plus occasional brand-linked appearances on her Instagram account.
As a working child actor under U.S. labour rules (often called Coogan Law in California and similar trust rules in New York), a fixed share of her earnings is placed in a protected savings account until she reaches adulthood. Her real take-home figure is shaped by that legal framework.
Salary
Exact per-episode pay has not been made public. Industry estimates place lead child actors on premium cable series like IT: Welcome to Derry somewhere between $15,000 and $40,000 per episode, with Marvel limited series often paying child performers a flat project fee.
Is Clara Stack dating anyone? Relationship status
Clara Stack is single and is not publicly dating anyone. At 15 years old, she has no public relationship history, and her family keeps her personal life firmly out of the press. Online posts that claim she has a boyfriend are unverified fan rumours.
She has spoken in interviews about spending most of her free time with her twin sister Maggie, her two pet cats, and her hobbies rather than focusing on celebrity-style social events.
Clara Stack’s social media presence
As of June 2026, Clara is active on Instagram under the handle @clarastacknyc, where she shares behind-the-scenes shots from her sets, theatre throwbacks, and casual photos with her twin sister.
Her account is carefully managed by her family, with a focus on her work rather than personal exposure. One of her most-shared posts marked the season finale of IT: Welcome to Derry.
Fast facts about Clara Stack
- She was born on October 19, 2010, in New York City and is 15 years old as of June 2026.
- Her zodiac sign is Libra.
- She has an identical twin sister named Maggie, whom she calls her best friend.
- She began acting at age four in local New York theatre productions.
- She played the title role of Matilda in a New York staging of Matilda the Musical.
- Her breakout screen role was Young Kate Bishop in Marvel’s Hawkeye (2021).
- She owns two pet cats and enjoys swimming, crocheting, drawing, and table tennis.
- She starred as Lilly Bainbridge in the 2025 HBO horror series IT: Welcome to Derry.
- Her estimated net worth ranges from $500,000 to $1 million.
- She keeps a bullet journal and creates her own original characters in her free time.
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Wrapping up
Clara Stack’s path from a four-year-old performing Annie in New York to a teenage lead on HBO’s IT: Welcome to Derry shows a child actor with rare staying power.
Backed by a private, supportive family and her twin sister Maggie, she has balanced school, hobbies, and major studio work without losing her grounded image.
With her Welcome to Derry season finale fresh in viewers’ minds, Clara Stack heads into her 16th year as one of Hollywood’s most-watched young actresses.
References
- IMDb. “Clara Stack”.
- The Movie Database (TMDB). “Clara Stack”.
- TV Insider. “Clara Stack – Actress”.
- Famous Birthdays. “Clara Stack – Age, Bio, Family”.
- Disney Branded Television Press. “Clara Stack Bio”.
- Rotten Tomatoes. “Clara Stack Movies & TV Shows”.
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