Michael Hatfield in

Michael Hatfield

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Angel Investor and Mentor at Self-employed
📍 Petaluma, California, United States

Michael Hatfield is a serial technology entrepreneur who has co-founded four successful ventures, including Cerent (acquired by Cisco for nearly $7 billion) and Carium (acquired by Healthmap). An alumnus of Rose-Hulman and Indiana University, he is now an active angel investor and mentor, focused on building high-performance teams.

Michael is passionate about fostering new ventures, demonstrated by his deep involvement with his alma maters Sawmill Society Angel Network, where he mentors and invests in alumni startups. He also founded and provided the initial $3.5 million gift to establish the Indiana Venture Center to support entrepreneurship in the state.

He has co-founded four successful tech companies: Cerent, Calix, Cyan, and Carium, leading to multiple successful acquisitions.

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Experience
1 Years
Current Role
Angel Investor and Mentor
Job Level
Senior
Location
Petaluma, California, United States
Personality Overview

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Priorities

Topics Michael cares about

Healthcare Technology
Co-founded and served as Executive Chairman of Carium, a virtual care platform, which was acquired by Healthmap Solutions to advance patient-centered technology.
Startup Exits
As a serial entrepreneur, he has successfully founded and exited multiple companies, including Cerent's acquisition by Cisco and Cyan's by Ciena.
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Career

Work history

2-2025
Angel Investor and Mentor
Self-employed
2-2025
Executive Chairman and Co-Founder
Carium (Acquired by Healthmap)
General Manager
Ciena (Formerly Cyan)
President and Founder
Cyan, Inc.
Founder
Calix
In the press

Media appearances

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Education
1985 - 1987
M.B.A.
Indiana University - Kelley School of Business
1980 - 1984
Bachelor of Science - BS
Rose-Hulman Institute of Technology
Social presence
in
Behavioral profile

DISC profile (public)

DISC behavioral profile

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