Weili Dai Net Worth, Relationships, Age/Birthdate & Birthday

Weili Dai is a pioneering tech entrepreneur recognized for co-founding one of the world’s leading semiconductor companies, and for her role in advancing women in STEM.

Introduction

Born on September 14, 1961, Weili Dai rose from a Shanghai childhood to become a trail-blazer in Silicon Valley, ultimately co-founding Marvell Technology Group. Her estimated net worth has in recent years climbed into the billion-dollar range, reflecting her significant ownership stakes, entrepreneurial ventures and leadership in chip design and packaging. Her personal life has been intertwined with her professional one: she formed a committed partnership with her husband and co-founder Sehat Sutardja, until his passing in September 2024. Her age/birthdate and birthday naturally anchor her story — her birthday is September 14.

Quick Facts

Scaling the Mountain: From Immigrant Student to Tech Visionary

Weili’s journey began in Shanghai, China, where she was born in 1961 and played semi-professional basketball before immigrating to the U.S. as a teenager.  She pursued computer science at University of California, Berkeley, laying the technical foundation that would later underpin her entrepreneurial leap. 

In 1995, alongside her husband Sehat and his brother Pantas Sutardja, she co-founded Marvell Technology Group around their kitchen table—starting with modest seed funding and big ambitions.  Over the next decade the company grew fast, going public in 2000 and expanding rapidly in storage, networking and mobile chips. 

Defining moments in Weili Dai’s journey include:

• Founding Marvell Technology Group in 1995, entering the then nascent fabless semiconductor market.

• Guiding Marvell’s growth into a global player in data storage and networking chips.

• Advocating for women in STEM and being recognized on Forbes’ power lists. 

• Transitioning post-Marvell into new ventures such as Silicon Box (chiplet packaging) and MeetKai (AI media). 

The Core Pillars of Weili Dai’s Wealth Include:

Relationships & Family Life

Weili Dai’s personal life has both complemented and shaped her professional journey. She married Sehat Sutardja in 1985; the pair went on to co-lead Marvell together.  They had two sons. After their time at Marvell they moved to Las Vegas and eventually shifted into newer ventures.  Following Sehat’s death on September 18, 2024, Weili inherited his stake in Alphawave and assumed an interim board role. 

Key insights into Weili Dai’s relationships and personal life:

• Her marriage to her professional partner helped shape the culture and trajectory of Marvell from the ground up.

• The family home base shifted to Las Vegas, reflecting a post-Silicon Valley chapter. 

• Sehat’s passing brought a significant inheritance and board role for Weili, indicating continuity in their joint legacy.

• She keeps a relatively low public profile when it comes to personal life, focusing more on business, philanthropy and mentorship.

Lifestyle, Assets & Interests

Beyond career success, Weili Dai leads a lifestyle that reflects both passion and purpose, including:

• Philanthropy: She has supported initiatives for girls and women in STEM, and global education access via partnerships such as One Laptop Per Child. 

• Real estate investments: After leaving Marvell, Dai and her family invested in properties in Las Vegas. 

• Entrepreneurship: She maintains active engagement in boards and startups, keeping pace with emerging tech trends in AI, semiconductors and chiplet packaging.

• Mentorship: Leveraging her experience as one of the few female founders of a major semiconductor firm, she often speaks to issues of diversity, immigration and innovation. 

Net Worth Breakdown & Analysis

Evaluations of Weili Dai’s net worth vary depending on holdings, market value and recent liquidity events. Recent reports estimate her wealth at around US $3.3 billion.  In past years, analysts placed it at lower figures (US $1.3 billion–US $1.6 billion) depending on publicly accessible assets. 

Note: These figures are approximate and reflect evolving valuations of equity, private holdings and market transactions.

Public Image, Legacy & Influence

Weili Dai is widely regarded as a pioneer not just in semiconductors but in breaking gender and immigrant-founder barriers in technology. She has been featured on lists of the most powerful women, and her story of moving from Shanghai to Silicon Valley resonates with many. 

Her legacy lies in multiple dimensions:

• Industry Impact: Co-founded a company that significantly influenced storage and networking chips.

• Representation: As one of the only female co-founders in her field, she has become a symbol for women advancing in tech.

• Innovation Forward: Her ongoing work in AI and chip packaging through newer ventures suggests she is not resting on past success but looking ahead.

• Philanthropy and Mentorship: Dai’s advocacy for STEM education and immigrant entrepreneurs further rounds out her public persona.

Conclusion

Weili Dai’s story is one of transformation — from a young immigrant with a computer science degree to one of the tech world’s most influential entrepreneurs. Her net worth, estimated at roughly US$3.3 billion, demonstrates the financial fruits of strategic leadership, venture foresight and resilience. Her relationships, especially her partnership with Sehat Sutardja, underline a lifetime of shared vision, innovation and family commitment. Her age/birthdate and birthday — September 14, 1961 — mark the beginning of a remarkable journey that continues to evolve. Her legacy is not only in the chips and programs she helped build, but in the doors she opened and the example she sets.