Leonard Bosack Net Worth (Updated 2025).

Leonard Bosack, born in the heart of Silicon Valley, began his career in the early 1980s as a computer engineer at Stanford University. Here, he honed his skills in networking and computer science, which would later become the foundation of his groundbreaking work.

In 1984, Bosack, alongside his colleague and future wife, Sandy Lerner, saw an opportunity in the university’s networking needs. They recognized that the existing systems were inefficient and decided to develop a solution. This led to the creation of the Stanford University Network (SUN), a precursor to the now-famous Sun Microsystems.

Leonard Bosack’s Current Net Worth (2025)

As of 2025, Leonard Bosack’s estimated net worth stands at $100 million, according to the latest available information.

Career

Leonard Bosack is a renowned entrepreneur and computer scientist, best known as the co-founder of Cisco Systems. He served as the company’s first engineering vice president and played a pivotal role in its growth. Bosack left Cisco in 1990 to pursue other ventures.

Other Ventures

After leaving Cisco, Bosack co-founded several other technology companies. These include Ramp Networks, a broadband services provider, and US Venture Partners, a venture capital firm. He also serves on the boards of various tech companies and non-profit organizations.

Assets

Bosack’s assets include a significant stake in Cisco Systems, as well as investments in various tech startups and real estate. He owns properties in California, including a residence in Atherton valued at around $10 million.

Annual Income

Leonard Bosack’s annual income is not publicly disclosed. However, as a successful entrepreneur and investor, his income is likely derived from his stake in Cisco, his investments, and his roles in various companies and organizations.

Frequently Asked Questions about  Leonard Bosack

Frequently Asked Questions: Leonard Bosack Net Worth

1. What is Leonard Bosack’s net worth?

Leonard Bosack’s net worth is estimated to be around $1.5 billion.

2. How did Leonard Bosack make his fortune?

Leonard Bosack co-founded Cisco Systems, a multinational technology conglomerate, with his wife Sandy Lerner in 1984. He served as the company’s first engineer and vice president of engineering.

3. What is Leonard Bosack’s role at Cisco Systems?

Leonard Bosack was the first engineer and vice president of engineering at Cisco Systems. He played a crucial role in developing the company’s early products and technologies.

4. When did Leonard Bosack leave Cisco Systems?

Leonard Bosack left Cisco Systems in 1990 to pursue other interests.

5. What happened to Leonard Bosack’s stake in Cisco Systems?

After leaving Cisco Systems, Leonard Bosack sold his shares in the company. The exact details of the sale are not publicly available.

6. What is Leonard Bosack’s current occupation?

After leaving Cisco Systems, Leonard Bosack has been involved in various entrepreneurial ventures and philanthropic activities. He is currently the CEO of US Robotics.

7. How much did Leonard Bosack contribute to the development of the internet?

Leonard Bosack’s work at Cisco Systems played a significant role in the development and growth of the internet. He helped develop technologies that enabled the expansion of networks and the widespread use of the internet.

8. What is Leonard Bosack’s educational background?

Leonard Bosack earned a Bachelor of Science degree in Electrical Engineering from the University of California, Berkeley.

9. Is Leonard Bosack involved in any philanthropic activities?

Yes, Leonard Bosack is involved in philanthropic activities. He has donated to various causes, including education and healthcare. He is also a member of The Giving Pledge, a campaign started by Warren Buffett and Bill Gates to encourage wealthy individuals to donate a majority of their wealth to philanthropic causes.

10. What is Leonard Bosack’s relationship with his wife Sandy Lerner?

Leonard Bosack is married to Sandy Lerner, who is also his business partner. They co-founded Cisco Systems together in 1984. Despite leaving the company, they remain married and continue to work together on various projects.