Web Reference: Jul 3, 2025 · Jack is the second of three children born to Rick and Shira Antonoff. His older sister, Rachel Antonoff, born on June 15, 1981, is a celebrated fashion designer known for her eponymous brand, launched in 2008. Early life Antonoff was born on March 31, 1984, in Bergenfield, New Jersey. [3] He is the second of three children of Shira (Wall) and Rick Antonoff. [4] He is the younger brother of fashion designer Rachel Antonoff. [5] His younger sister, Sarah, died of brain cancer at the age of 14 when Jack was a senior in high school. [6] Oct 15, 2023 · When he was 18 years old, Antonoff's younger sister Sarah died of brain cancer. She was 13. This experience shaped most of the songs he's written, he said. “I kind of wrote pretty much about...
YouTube Excerpt: How well do
Information Profile Overview
Jack Antonoff Siblings - Latest Information & Updates 2026 Information & Biography
Details: $59M - $92M
Salary & Income Sources
Career Highlights & Achievements
Assets, Properties & Investments
This section covers known assets, real estate holdings, luxury vehicles, and investment portfolios. Data is compiled from public records, financial disclosures, and verified media reports.
Last Updated: April 9, 2026
Information Outlook & Future Earnings
Disclaimer: Disclaimer: Information provided here is based on publicly available data, media reports, and online sources. Actual details may vary.