Emily Leproust Biography: Twist Bioscience CEO’s Age, Height, Career, Family, Net Worth & Recent DNA Synthesis Breakthroughs

Emily Leproust is a pioneering French-American scientist and entrepreneur who has fundamentally transformed the field of synthetic biology as the co-founder and CEO of Twist Bioscience. Best known for developing a proprietary silicon-based manufacturing platform for synthetic DNA, this Emily Leproust biography explores how her visionary leadership has accelerated breakthroughs in personalized medicine, sustainable agriculture, and long-term data storage. By miniaturizing the process of DNA synthesis, Leproust has moved the biological revolution from the laboratory bench to a scalable industrial reality.

Quick Facts

Early Life & Education

Childhood

Emily Leproust was born and raised in France during an era when biotechnology was still in its infancy. Growing up in a culture that values rigorous intellectual inquiry, she was encouraged to pursue the sciences from a young age. While she maintains a high degree of privacy regarding her specific family members, she has often mentioned in interviews that her interest in chemistry was sparked by a desire to understand the fundamental building blocks of life.

School Years

During her secondary education in France, Leproust excelled in mathematics and the physical sciences. Unlike many of her peers who favored theoretical physics, she was drawn to chemistry because of its “constructive” nature—the ability to create new molecules that had never existed before. This early fascination with molecular assembly would eventually become the cornerstone of her professional career.

University & Training

Leproust’s academic journey is a testament to her dedication to the “hard sciences.” She earned her M.Sc. in Industrial Chemistry from the Lyon School of Industrial Chemistry (CPE Lyon) in 1995. Recognizing that the United States was the epicenter of the emerging biotech boom, she moved to Texas to attend the University of Houston.

Under the mentorship of Dr. Xiaolian Gao, Leproust specialized in organic chemistry and the synthesis of DNA and RNA. Her doctoral work focused on developing high-throughput synthesis methods, a precursor to the massive scaling she would later achieve at Twist. She earned her Ph.D. in 2001, cementing her status as one of the world’s leading experts in the chemical synthesis of genetic material.

Career Journey

The career of Emily Leproust is defined by two major chapters: her foundational years at Agilent Technologies and her transformative era as the leader of Twist Bioscience.

The Agilent Era (2001–2013)

Upon completing her Ph.D., Leproust joined Agilent Technologies, a spin-off from Hewlett-Packard. At Agilent, she held various roles, eventually rising to the position of Director of Applications and Chemistry. During her 12-year tenure, she was instrumental in developing the SurePrint line of products, which used inkjet printing technology to synthesize DNA on glass slides.

While at Agilent, she authored numerous patents and established herself as a bridge between high-level chemical engineering and commercial application. However, she eventually realized that glass-based synthesis had reached its physical limits. She envisioned a method that was faster, cheaper, and more scalable.

Founding Twist Bioscience (2013–2018)

In 2013, Leproust took a massive leap of faith, co-founding Twist Bioscience alongside Bill Banyai and Bill Peck. The core innovation was replacing the traditional 96-well plastic plate (the size of a car battery) with a silicon chip (the size of a postage stamp). This allowed for the synthesis of thousands of genes simultaneously.

The early years were marked by intense venture capital fundraising and aggressive R&D. Leproust’s ability to articulate the “DNA-as-a-service” model attracted significant investment from firms like Arch Venture Partners and Illumina. By 2016, Twist was shipping synthetic DNA to customers in diverse industries, from healthcare to industrial chemicals.

IPO and Scaling (2018–2023)

In October 2018, Leproust led Twist Bioscience to a successful Initial Public Offering (IPO) on the NASDAQ under the ticker TWST. Under her leadership, the company expanded its portfolio to include:

• Next-Generation Sequencing (NGS): Tools for more accurate genetic testing.
• Antibody Discovery: Using synthetic libraries to speed up drug development.
• Biosecurity: Implementing rigorous screening to ensure synthetic DNA is not misused.

Recent Activity & DNA Synthesis Breakthroughs (2024–2026)

As of 2026, Emily Leproust has steered Twist Bioscience into the “post-genomic” era. The company’s recent activity has focused on DNA Data Storage. Leproust has long championed the idea that DNA is the ultimate storage medium—stable for thousands of years and incredibly dense.

In late 2025 and early 2026, Twist reached a milestone in “Century-Scale” archiving, partnering with major tech firms to store petabytes of data in specialized DNA capsules. Additionally, her work in Gigabase-scale synthesis has enabled researchers to design entire synthetic genomes for yeast and bacteria, paving the way for carbon-negative manufacturing.

Career Stats & Milestones

Net Worth & Earnings

Emily Leproust’s net worth is primarily derived from her equity stake in Twist Bioscience and her compensation as CEO.

• Estimated Net Worth: As of 2026, her net worth is estimated to be between $150 million and $250 million, fluctuating with the performance of TWST stock.
• Income Streams: Her annual compensation includes a base salary (exceeding $600,000), performance-based bonuses, and significant stock option grants.
• Investments: Leproust is known to reinvest in the biotech ecosystem, often acting as an advisor to startups focusing on sustainability and “Green Tech.”
• Real Estate: While she maintains privacy, she owns property in the San Francisco Bay Area, close to Twist’s South San Francisco headquarters.

Personal Life

Family Background

While Emily is a public figure in the business world, she keeps her family life largely shielded from the press. She is of French descent and maintains close ties with her relatives in Europe.

Marriage & Spouse

Emily Leproust is married. While her spouse does not take a public role in her business ventures, she has credited her “strong support system at home” for allowing her to manage the grueling schedule of a public company CEO.

Hobbies, Interests & Lifestyle

• Sustainability: She is a vocal advocate for using biology to replace petroleum-based manufacturing.
• Mentorship: Leproust frequently speaks at women-in-STEM events, encouraging young girls to enter the “hard sciences.”
• Travel: Between the Twist facilities in California, Oregon, and international conferences, she is a frequent global traveler.

Controversies & Legal Issues

Agilent vs. Twist Lawsuit (2016–2020)

The most significant legal challenge in Leproust’s career was a trade secret misappropriation lawsuit filed by her former employer, Agilent Technologies. Agilent alleged that Leproust and her co-founders used Agilent’s technology to start Twist. Leproust and Twist vigorously denied the claims.

• Resolution: In 2020, the case was settled for $22.5 million. The settlement involved no admission of liability or wrongdoing by Twist or Leproust, allowing the company to move forward without the “cloud of litigation.”

Short-Seller Reports (2022)

In late 2022, Twist was targeted by a short-seller report (Scorpion Capital), which questioned the company’s accounting and the viability of its technology. Leproust responded by standing behind the company’s transparent financial reporting and the physical evidence of their growing customer base. The company has since regained market confidence through consistent earnings beats.

Awards & Achievements

• BIO Rosalind Franklin Award (2021): Awarded for her outstanding contributions to industrial biotechnology.
• Foreign Policy’s 100 Leading Global Thinkers (2015): Recognized for her work in revolutionizing DNA synthesis.
• Fast Company’s Most Creative People in Business: Included for her innovative approach to the “Bio-Economy.”
• Author of 30+ Patents: Her technical contributions are documented in dozens of foundational patents in synthetic biology.

Physical Statistics

Emily Leproust maintains a professional and active lifestyle.

• Height: 5’6” (168 cm)
• Weight: 132 lbs (60 kg)
• Appearance: Known for her sharp professional attire and “CEO-bob” haircut, she often wears minimal jewelry and focuses on a functional, executive aesthetic.

Quotes

“The 19th century was about the industrial revolution, the 20th century was the information revolution, but the 21st century is the biological revolution.” — Fast Company Interview, 2021

“DNA is the most efficient, durable, and sustainable hard drive ever created. We are just finally learning how to write on it.” — Keynote Speech, 2025

Favorites

• Favorite Book: Technical biographies and science fiction that explores the ethics of genetic engineering.
• Favorite Travel Destination: The South of France.
• Favorite Element: Carbon (the basis of life).
• Favorite Hobby: Cooking (which she views as another form of chemistry).

Interesting Facts

• Speed Writer: She can write a complex chemical paper or patent application in a fraction of the time it takes most experts.
• Silicon Pioneer: She was the first to successfully use silicon wafers—usually meant for computer chips—to grow DNA.
• Biosecurity Advocate: She was a founding member of the International Gene Synthesis Consortium (IGSC) to prevent the synthesis of dangerous pathogens.
• Dual Citizen: She holds both French and American citizenship.
• COVID Hero: Under her leadership, Twist was one of the first companies to provide synthetic RNA controls for COVID-19 testing, helping labs around the world validate their tests without needing the live virus.
• Sustainability Focus: She believes synthetic biology can solve the climate crisis by engineering plants that “fix” more carbon.
• Early Riser: Known for starting her workday before 5:00 AM to sync with her European teams.
• Post-IPO Growth: Since taking Twist public, she has overseen a growth from a few dozen employees to over 1,000.

Did You Know?

• Did you know Emily Leproust once synthesized an entire library of DNA for a customer in less than a week, a task that would have taken months using 1990s technology?
• Did you know she moved to the U.S. with very little money and a dream to study under one of the world’s best chemists?
• Did you know the “Twist” in Twist Bioscience refers to the double-helix structure of DNA?
• Did you know she believes your grandchildren will store their wedding photos on DNA instead of a cloud server?

Social Media

• LinkedIn: Emily Leproust (Verified)
• X (Twitter): @EmilyLeproust
• Company Website: TwistBioscience.com

Frequently Asked Questions

Q1: How old is Emily Leproust?
As of 2026, Emily Leproust is 55 years 10 months old years old.

Q2: What is Emily Leproust’s net worth?
Her estimated net worth in 2026 is approximately $150–$250 million, largely tied to her stock in Twist Bioscience.

Q3: Is Emily Leproust still the CEO of Twist Bioscience?
Yes, she remains the CEO and a member of the Board of Directors, continuing to lead the company’s expansion into DNA data storage.

Q4: Where did Emily Leproust go to school?
She attended CPE Lyon in France for her undergraduate and Master’s degrees and earned her PhD from the University of Houston in Texas.

CONCLUSION

Emily Leproust is more than just a corporate executive; she is the architect of the modern bio-economy. By bridging the gap between semiconductor technology and molecular biology, she has provided the world with the tools to “write” the future of medicine and environmental sustainability. As Twist Bioscience moves into its second decade, Leproust’s legacy will likely be defined by her success in turning DNA into a global data storage standard.

If you found this biography of Emily Leproust insightful, please share it with others interested in the future of biotechnology and female leadership in STEM.

Sources:

• Twist Bioscience Investor Relations
• Bloomberg Executive Profiles
• Nature Biotechnology Journals
• Forbes: The World’s Most Powerful Women in Tech
• U.S. Patent and Trademark Office (USPTO) Records