Board of Directors

David Baum is the founder, managing director of Stage 1 Ventures and an investor of OnePIN. Baum is an experienced general partner with 35 years in the information technology industry, including twenty-five years in technology finance and ten years in entrepreneurial operating management roles.

As an operating entrepreneur, Baum founded two companies including Pensoft Corporation, a venture-backed (Mohr, Davidow Ventures, IVP, and Bay Partners) mobile communications company that was sold to AT&T in 1994. Baum has also spent time at larger organizations including IBM and Genentech.

Baum was a key principal that raised, launched, staffed, and managed Prism Venture Partners, a leading early stage venture capital fund. Founded in 1996, Prism has provided start-up equity to more than eighty-five companies, which have completed five public offerings and thirty strategic mergers and acquisitions. During his tenure at Prism, the firm grew from zero to over $1.25B under management. Previous investments include Softricity (sold to Microsoft), Network24 Communications (sold to Akamai), DotBank (sold to Yahoo), Altaworks (sold to Opnet), Integral Access (sold to Telco Systems), Syncra Systems (sold to Retek), Salesnet (sold to RightNow) and Bitfone (sold to HP).

In January of 2006, Baum launched Stage 1 Ventures, an early stage venture capital firm. Investments include Carbonite (IPO 2011 NASDAQ:CARB), e-Centives (sold to Catalina) , Skyhook Wireless (sold to TruePosition) , Splunk (NASDAQ:SPLK), AdelaVoice, Instream, OwnerIQ, Veloxum, Paydiant, FlashNotes, XPeerient (sold to Net-Net), Delfigo Security, Wing Power Energy, Greater Good, Phantom Alert, TimeTrade, Zapoint, OnePin, Myxer, Cuesol (sold to Catalina Marketing), Xpeerient (sold to NET(net)), Magnify Media, go2 (merged with 80108), FrameMedia (sold to Scala!), Auspice (sold to Arris), WorldWinner (sold to Liberty Media), Banshee Wines, Newburyport Brewing, PureCars, OpenBay, deepDB, Marxent Labs, Autonet Mobile, Carvoyant, Parelastic, Dashbell, Vivox, Promoboxx, Ditto, Mobee, Sitewit, Coherent Path, ConnectTowers, Prime Student Loan, Glanola, Narvii, Nexercise, Donde Esta, and Zink.

As a fourteen-year member of Common Angels, Baum is an active angel investor (30 angel investments) and a strong supporter of entrepreneurs across the country. Baum is a mentor at the Harvard Innovation Lab.

In June of 2010, Baum launched S1 Capital Partners, a later stage secondary/growth equity investment vehicle with Rod Randall. S1 Capital made its first investment into YMAX, Corp, a leading CLEC/VOIP provider in North America and creators of the MagicJack-branded consumer service offering. YMAX went public (NASDAQ:CALL) later in 2010 by purchasing VocalTec, a leading softswitch provider.

Baum holds an MBA from the Harvard Business School with second year honors and BS in Computer Science from Drexel University where he graduated first in his science class.

Baum’s investment areas of focus are: mobile applications and systems, consumer and business cloud-based applications, the Internet of Things, commercial drones, alternative energy, content and gaming, IPTV, virtualization, e-commerce, location based services, security, the connected car, big data, and data communications equipment.

Feyzi Çelik is the founder of OnePIN®, an industry visionary and an inventor at heart. He revolutionized digital services for Mobile Operators and Brands to communicate with their customers.

Celik has innovated the exchange of digital business cards within mobile phones, allowing subscribers to grow their mobile phonebooks and enrich their social networks. He pioneered an interactive messaging service which is triggered upon a missed call. Celik has transformed Mobile Marketing by deepening Mobile Operators’ and Brands’ relationship with their subscribers through an interactive and meaningful channel. He has moved mobile network analytics, quality measurements, and mapping to a new level.

Under Çelik’s direction, OnePIN is working with leading mobile network operators and global Brands to bring OnePIN’s cutting-edge technologies to mobile phones. OnePIN is now servicing 20 mobile operators including Vodafone, Orange, A1, MTN, Etisalat, and Cable & Wireless. Its customer base spans the globe and includes more than 650 million mobile subscribers.

Çelik raised over $26 million in funding for OnePIN from four Venture Capital firms: Stage 1 Ventures, QKA, L.P., Egan Managed Capital and Greycroft Partners.

Prior to founding OnePIN, Çelik served as President and CEO of the North American division of Koc Group, a $40 billion Fortune Global 500 company based in Istanbul.

Çelik holds a master’s degree in business administration with high distinction from the Babson College Graduate School of Business, a master’s degree in mechanical engineering from Boston University and a bachelor’s degree in mechanical engineering from the Middle East Technical University (METU) College of Engineering.

Çelik is the recipient of the Babson College W.F. Glavin Center Global Entrepreneur Award.

Çelik holds 60+ global patents related to OnePIN technologies. Çelik is also the main inventor on a number of patents currently in the pending stage both nationally and internationally.

Kenneth (Ken) Mabbs is a Managing Partner and a founder of QKA, L.P. He serves on the Board of Directors of Knoa Software and OnePIN, and until their exits, served on the boards of E Ink and ISOPur. Prior to its IPO, Mabbs was an observer to the board of A123 Systems.

Prior to co-founding FA Technology Ventures, Mabbs served as Director of Investment Banking and Director of Merchant Banking from 1991-2000 at Gleacher and Company, a publicly traded investment banking firm focused on emerging technology companies. Mabbs led the transformation of Gleacher’s corporate investment banking practice from a regional generalist approach to a nationwide information technology and energy technology focused practice. Investment banking revenues grew from $7.8 million to $32.8 million and equity underwriting volumes of lead or co-lead transactions increased from $24 million to over $2 billion. The Merchant Banking activity consisted of the venture capital investing of the FATV I Portfolio, which invested over $17 million and resulted in realizations of over $77 million. Mabbs also worked on strategy, due diligence and investment negotiations in Mechanical Technology and its follow-on investments in Plug Power (where he was a co-founder), Beacon Power and Satcon as well as FATV I investments in iRobot and META Group. Prior to working at Gleacher, Mabbs was a senior investment banker at Bear Stearns and Company, Inc., in New York and in Boston where for eight years he focused on emerging technology companies.

Mabbs has served as a Judge and Mentor to the annual MIT Enterprise Forum’s Ignite Business Plan Contest for energy technology companies since its inception (now The Cleantech Open). Along with a select group of leading energy technology executives and scientists, he addressed the U.S. House of Representatives Committee on Science regarding investing in energy technology and accelerating the emergence of the hydrogen economy in the United States. In 2012, Mabbs testified before the Senate Committee on Small Business and Entrepreneurship on the topic of Energy Storage in the new digital economy.

Mabbs has a BA from Denison University and an MBA from the Wharton School at the University of Pennsylvania.

Joseph Winn is the Principal at Stanhope Associates LLP, a sole-practitioner management consulting firm specializing in financing and strategy for emerging businesses.

Winn spent nearly 10 years with American Tower Corporation (NYSE:AMT), serving as Vice Chair from 2001 to 2004 and CFO from the company’s inception in 1995 until 2001. Before AMT, Winn served as President of Atlantic Radio Corp. and was later Co-Founder, CFO, and Director of American Radio Systems Corporation (NYSE:AFM) which was merged in 1988 with CBS Corporation in a transaction valued at over $2b; and earlier he was Senior Vice President of American Cablesystems Corporation (AMEX:ACN), which merged with Continental Cable (later Comcast) in 1988 in a transaction valued at over $700m.

Mr. Winn currently serves as a Director of OnePIN, Inc; as a senior advisor and investor in Beverly Crossing, a multi-unit residential real estate owner and developer; and as a member of the Limited Partner Advisory Committee for FourBridge Partners, a creator of investment portfolios of venture capital and private growth equity funds.

Winn is a Trustee Emeritus at Babson College, where he is a past Chair of the Board of Trustees (2011-2017), and is also a member, and past Chair of the College’s Investment Committee.

Joseph L. Winn has a Master of Business Administration from Babson College Graduate School of Business. Mr. Winn holds a bachelor’s degree from the Carroll School of Management at Boston College.


Mike Shanahan is a managing partner at Egan-Managed Capital. Shanahan has spent more than 30 years in finance and venture investing. He co-founded Egan-Managed Capital in 1997. As managing partner, he is responsible for the investment decision process and supports portfolio companies with financial and capitalization advice. He serves on the board of directors of Apparent Networks, Genalytics, Nexaweb, Softrax Corporation, Whaleback Systems and has served on ten other Egan portfolio boards.

Prior to Egan-Managed Capital, Mr. Shanahan worked with Eastech Management Company, a New England-focused early-stage technology venture firm. Eastech developed a portfolio of 34 companies during Mr. Shanahan’s tenure. He served as a director and filled management roles in several Eastech portfolio companies. Before Eastech, he worked in corporate finance and venture capital at Paine Webber and Banker’s Trust Company.

Mr. Shanahan holds a Master of Business Administration from Harvard Business School and a bachelor’s degree in economics from the College of the Holy Cross.