Michael Callahan Overview

  • Investor Type
  • Angel
  • Investments
  • 2
  • Portfolio
  • 1
  • Exits
  • 1

Michael Callahan General Information


Mr. Michael Callahan serves as Board Member at Cyral. He co-founded and served as Board Member & Chief Executive Officer at Awake Networks. He served as Entrepreneur-in-Residence at Greylock Partners. He was CTO of PolyServe, a Greylock portfolio company that built mission-critical shared-data storage clustering software for Linux and Windows. He cofounded the company in 2000 and helped it grow to deployments at over a thousand customers and a successful acquisition by HP in 2007. He then served as Chief Technologist for Enterprise NAS at HP. Since leaving HP at the end of 2009, he has consulted for various start-ups on development operations and strategy, including Greylock portfolio companies Workday and Drobo (formerly Data Robotics). Before starting PolyServe, he served as Director of Advanced Development at Ask Jeeves, an early natural-language search engine. Previously, he was a mathematician, focusing on differential geometry, topology, gauge theory, and the use of scientific visualization in mathematics, and did research in computer science on the application of massively parallel architectures to computer vision. Mr. Callahan was a Rhodes Scholar and Junior Research Fellow in Mathematics at Oxford University, and graduated from Harvard University summa cum laude with a degree in Social Studies.

Contact Information

Primary Investor Type
Angel (individual)

Michael Callahan Investments (2)

Company Name Deal Date Deal Type Deal Size Industry Company Stage Lead Partner
SocialCops 25-May-2021 Later Stage VC 0000 Media and Information Services (B2B) Generating Revenue 0000000 00000000
0000000 12-May-2015 00000 00000 000.00 Buildings and Property Generating Revenue 0000000 00000000
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Michael Callahan Exits (1)

Company Name Exit Date Exit Type Exit Size
0000000 06-Mar-2020 000000000 00000 00
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Michael Callahan Investments by Industry, Year, and Region

Investments by Industry

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Michael Callahan Team (1)

Name Title Deals Funds Boards Office
Michael Callahan Angel Investor 0 0 Redwood City, CA
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Michael Callahan Co-Investors (13)

Name With Exits Lead Partner Series Industry
Akshay Kothari 1 0 Series chart Industry bar
Auren Hoffman 0 0 Series chart Industry bar
Dan Wright 0 0 Series chart Industry bar
Insight Partners 0 0 Series chart Industry bar
WaterBridge Ventures 0 0 Series chart Industry bar
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