The founding partners set out in 1999 to build our latest company: Windspeed Ventures.


Having known one another for over a decade, and all having a strong entrepreneurial spirit coupled with the experience of starting and building successful businesses from early stages, we decided to assist other entrepreneurs to achieve their dreams.

Our experience in starting and building companies offers extraordinary value to entrepreneurs. This value comes in the form of hard-learned lessons that allow us to offer strategic and operational guidance appropriate to the situation of each new business. Two of the three Windspeed partners come from high technology operational backgrounds, the third from high finance on Wall Street. Together, we bring skills in technology evaluation, R&D, marketing, sales, finance, legal and M&A.

We also enjoy a strong network of industry talent including: entrepreneurs, seasoned managers, potential co-investors and ancillary service providers.



John W. Bullock    Managing Partner

John W. Bullock

Managing Partner

John is a founding partner of Windspeed Ventures and has served as managing partner since its inception. John brings more than 18 years of experience in the high tech communications sector to Windspeed. Prior to joining Windspeed, John was the business director of the worldwide service organization for Bay Networks. There he was responsible for business development, sales, marketing, and strategy for the $150 million organization. Prior to Bay Networks, John was one of the early members of Wellfleet Communications. At Wellfleet, he was responsible for building the service organization, including creating a profit center that went from $0 to over $90 million in annual revenue. Before Wellfleet John was a software development engineer at Codex/Motorola Corp., developing wide area data communications products. John holds a BS in computer science from Fitchburg State University.

John is currently a director of Bradford Networks. Previously, he served as a director of (acquired by Intuit), Mancala, Fidelia Inc. (acquired by Network General), and Burstpoint Networks (acquired by Avaya). 

Steven E. Karlson    General Partner

Steven E. Karlson

General Partner

Steve is a founding partner of Windspeed Ventures. With more than a decade of high technology marketing experience, Steve came to Windspeed from Primeon, Inc., where he was responsible for overall marketing activities for this software re-engineering firm. Prior to his work at Primeon, Steve was a co-founder and vice president of marketing for Accordance Corporation, a provider of carrier-scale e-mail server infrastructure. Accordance merged with in 1996 and then with in 2000 to become OpenWave. Earlier in his career, he served as a director for Microsystems Software, a developer of network-based office productivity software, where he was responsible for product marketing, technical support and quality assurance. Prior to Microsystems, Steve spent six years in product management at Data General Corporation. Steve holds an MBA from Carnegie Mellon University and a BS in electrical engineering from Brown University. 

Steve is currently a Director at Zipit Wireless. Previously, he served as a Director of VistaPrint Limited (NASDAQ: VPRT) a self-service premium quality printing products and services company which was renamed to Cimpress (NASDAQ:CMPR) in 2014.

Daniel H. Bathon, Jr.    General Partner and Chairman

Daniel H. Bathon, Jr.

General Partner and Chairman

Dan is a founding partner of Windspeed Ventures and currently serves as general partner and chairman. He is a seasoned financial expert, having served as senior vice president and partner of Drexel Burnham Lambert, where he was in charge of the firm’s commercial paper division in New York and where he raised over $1 billion for two major customers. From 1987 Dan managed Drexel’s high yield bond development effort in Western Europe from Paris. This included structuring foreign currency debentures for some of Drexel’s European clients. In 1989, he left Drexel to start his own European investment banking company specializing in leveraged buy-outs, corporate finance, and institutional money management and achieved the highest market returns during his tenure. Upon returning to the United States, Dan started FINATECH, Inc., where he continued to advise international corporate finance clients. At FINATECH he helped lead the venture capital financing for Accordance Corporation that later merged into

Dan received a BS in business administration from Villanova University.

Dan was formerly a director of Future Point Systems and BurstPoint Networks (acquired by Avaya).


our current portfolio