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Michelle Trachtenberg’s net worth was estimated at $6 million at the time of her death. Born Michelle Christine Trachtenberg on October 11, 1985, in New York City, she was an American actress who began her professional career as a child performer and built a sustained two-decade career across film and television. She is best remembered for her roles as Dawn Summers on Buffy the Vampire Slayer (2000–2003) and Georgina Sparks on Gossip Girl (2008–2012, 2022). Michelle Trachtenberg passed away on February 26, 2025, at age 39 in New York City from complications of diabetes mellitus following a liver transplant.
Updated March 2026: According to IMDb and reporting by People and the New York Post, Trachtenberg’s cause of death was confirmed in April 2025 after toxicology results revealed complications of diabetes mellitus. She died in her rented apartment at 1 Columbus Place, New York City, which she had leased beginning September 2024.
Michelle Christine Trachtenberg was born on October 11, 1985, in New York City, to Lana and Michael Trachtenberg, Jewish immigrants of Russian and German descent. She grew up in the Sheepshead Bay neighborhood of Brooklyn. Trachtenberg began working in commercials and small television roles as a young child, appearing in ads for national brands before landing her first recurring television credit.
She studied at New York City public schools and later at an arts-focused program that accommodated her working schedule. Her breakthrough came at age eight with a recurring role on Nickelodeon’s The Adventures of Pete & Pete (1994–1996), followed by the title role in the feature film Harriet the Spy (1996) — her first major lead film performance.
Trachtenberg’s most significant career role was Dawn Summers, the younger sister of Buffy on Buffy the Vampire Slayer (WB/UPN), joining the cast in Season 5 (2000) and remaining through the series finale in 2003. The role earned her three Saturn Award nominations and a Young Artist Award. The show became a cultural touchstone of the early 2000s and remains one of the most analyzed genre series in television history, according to Variety.
Her film work includes the teen comedy EuroTrip (2004), the Disney drama Ice Princess (2005), and the teen horror film Black Christmas (2006). Her adult television work included the recurring role of Georgina Sparks on Gossip Girl (The CW, 2008–2012), a fan-favorite antagonist she reprised for the HBO Max revival in 2022. She received three Young Artist Awards total across her child and young-adult career, per IMDb.
At the time of her death, Michelle Trachtenberg was in a long-term relationship with Jay Cohen, her partner of approximately five years (since around 2020). The couple was not married. Trachtenberg had no children. She had been dealing with health challenges connected to diabetes mellitus in the period before her death. She was renting a two-bedroom apartment at 1 Columbus Place in New York City, at a monthly rate of $7,500, having signed the lease in September 2024. The apartment was re-rented in April 2025 following her death. She also owned a home in Sherman Oaks, California, which she had purchased in 2001.
Trachtenberg was notably absent from the Academy Awards 2025 In Memoriam segment broadcast on the televised ceremony, though she was included in the online version. The omission was widely discussed in entertainment media. She was remembered by co-stars including Sarah Michelle Gellar, Alyson Hannigan, and Leighton Meester, among others, in public tributes following her death.
Michelle Trachtenberg’s net worth was estimated at approximately $6 million at the time of her death on February 26, 2025. Her estate includes a Sherman Oaks, California property purchased in 2001 for $850,000 (valued at approximately $2–3 million at market rates in 2025), as well as residuals and royalties from her extensive television catalog including Buffy the Vampire Slayer and Gossip Girl.
Michelle Trachtenberg died on February 26, 2025, at age 39 in her rented New York City apartment at 1 Columbus Place. The cause of death, confirmed in April 2025 following toxicology results, was complications of diabetes mellitus. She had previously undergone a liver transplant, and her health had been a concern in the period leading up to her death, per reporting from People and the New York Post.
Michelle Trachtenberg was 39 years old when she died on February 26, 2025. She had been born on October 11, 1985, and had turned 39 in October 2024, approximately four months before her passing.
Michelle Trachtenberg stood 5 feet 7.5 inches (1.71 m) tall, as noted in her entertainment industry biographical records and cited across multiple entertainment publications throughout her career.
Michelle Trachtenberg is most widely recognized for two television roles: Dawn Summers, the younger sister of Buffy Summers on Buffy the Vampire Slayer (WB/UPN, 2000–2003), which earned her three Saturn Award nominations and a Young Artist Award; and Georgina Sparks, the scheming socialite on Gossip Girl (The CW, 2008–2012), a recurring antagonist role she reprised for the HBO Max revival in 2022. Her film work includes the title role in Harriet the Spy (1996) and the Disney drama Ice Princess (2005).
Michelle Trachtenberg was not married at the time of her death. She was in a relationship with Jay Cohen, her partner of approximately five years. They were not engaged or married, and Trachtenberg had no children.