Board of Directors

Dr. Avi Katz

Chairman of the Board

Dr. Katz is a philanthropist, entrepreneur, High-Tech executive, and since 2017 is the Founding Managing Partner and Executive Chairman of GigCapital Global (, a serial issuer of Private-to-Public Equity (PPE) entities, also known as Special Purpose Acquisition Companies (SPACs). Since inception in September of 2017 GigCapital Global (GIG) has issued and completed initial public offerings of six PPE entities, and completed combinations and taking public of five entities; using the PPE platforms; GIG1 combined in November 2019 with Kaleyra (NYSE KLR), which was sold to Tata Communications in November 2023, GIG2 combined with UpHealth Holding in June 2021 (NYSE UPH), GIG3 combined in May 2021 with Lightning eMotors (NYSE ZEV), GIG4 combined with BigBear in December 2021 (NYSE BBAI), and GIG5 combined with QT-Imaging (NASDAQ QTI) in February  2023. Dr. Katz is a veteran of more than 35 years of activity with small and middle-size High-Tech companies as founder, chairman of the board of directors, executive and CEO, and as angle and-later stage investor.

Dr. Katz chairs and participates in many boards of directors of private and public High-Tech companies, as well as non-for-profit organizations and, among others, is a member of the board of directors of the New York Philharmonic orchestra. Prior to founding GigCapital Global enterprise in 2017, Dr. Katz bootstrapped GigPeak / GigOptix (NYSE American GIG) in 2007 and led the organization as the chairman of the Board and CEO from the inception and until its sale in 2017 to IDT International (NYSE IDTI).

Prior to funding GigOptix, Dr. Katz has held  CEO and board member positions with privately held companies, including Intransa Inc. and Equator Inc., and earlier he served in several executive positions following his tenure as a member of the technical staff in AT&T Bell Laboratories, Murray Hill, New Jersey in the 80’s and early 90s. Dr. Katz is a graduate of the 1976 class of the Israeli Naval Academy and holds a B.Sc. and Ph.D. in Semiconductors Materials from the Technion (Israel Institute of Technology). Dr. Katz is a serial entrepreneur, holds many U.S. and international patents, has published more than 300 technical papers and is the editor of a number of technical books.

Ross Taylor

Chair of Audit Committee

Ross Taylor has over 30 years of financial experience, both as a chief financial officer and as an equity research analyst on Wall Street. Ross is presently chief financial officer of BillionToOne, a precision diagnostics company with the mission to make molecular diagnostics more accurate, efficient, and accessible.  Previously, he was chief financial officer of Codexis, Inc., an enzyme engineering company.  Prior to Codexis, Ross was chief financial officer of Abaxis Inc., a leading point of care diagnostics company serving the animal health and human health markets, until Zoetis acquired the company for $2 billion.  Ross also served on the board of directors of Scandinavian MicroBiodevices, which was acquired by Zoetis for $80 million.  Prior to Abaxis he had a successful career as an equity research analyst for over 20 years at several Wall Street firms including CL King & Associates, UBS, Smith Barney, and CJ Lawrence.  Ross earned an MBA from Columbia Business School and a Bachelor’s degree in Economics from Duke University.

James S. Greene

Chair of Compensation Committee

Since 1980, Jim has been serving the global financial services industry. 21 of those years with Accenture where he was instrumental in creating and leading their global financial services business. The last 20 years spread between being CEO of a technology start-up, global head of Financial Services for Cap Gemini, global head of Financial Services Consulting for Cisco and as a Managing Partner of a private equity fund focused on creating and incubating enterprise class analytics software companies. He has worked with over 75 start-ups in the last 10 years ranging from fintech, payment tech, big data, platforms, to name a few.

He is Founder and Managing Director of Sky D Ventures. A venture fund and advisory services firm. They focus primarily in seed rounds in fintech, emerging technologies, commerce platforms, to name a few. In addition, they provide advisory services to incumbents and disrupters alike in financial services, to private equity and VC’s in FinTech and to technology companies serving the financial services industry.

Jim’s industry tenure has been primarily focused on serving global financial services clients. His functional expertise spans consumer, wealth management, commercial, financial markets, mortgage, payments and business models. His geographic experience is balanced across North America, EU, Asia and Emerging Markets. Jim’s work with clients covers large-scale solution development and implementation, business and technology strategy development, and new venture creation and operation. He has an abundance of experience in creating and scaling strategic partnerships and ecosystems. Jim is a well-recognized thought leader on several topics. He regularly hosts and moderates small to large executive conferences and visits to the Silicon Valley. He is a frequent speaker at industry conferences on the topics of Enabling Commerce and New Models for Profitable Growth in Global Financial Services. He also serves on the Boards of both public and private companies.

John C. Klock, M.D.

Board Member

Dr. Klock has served as the Chief Executive Officer of QT Imaging since 2014 and as a Director and Founder of QT Imaging since 2011. Prior to serving in these positions with QT Imaging, Dr. Klock was involved in the start-up of five medical companies, including as Co-Founder and President of BioMarin Pharmaceutical, Inc., which successfully commercialized five FDA drugs; and Scientific Founder and Vice President of Research of Glycomed, Inc., which was acquired by Ligand Pharmaceuticals, Inc.

Dr. Klock also personally brought to market a novel cancer treatment, the first rapid AIDS test, comprehensive tests for detecting metabolic diseases in children, and several drugs for treating pediatric genetic conditions. Dr. Klock has authored over 70 peer reviewed medical and scientific publications and has been granted eight patents.

Professor Zeev Weiner

Chair of Nom/Gov Committee

Zeev Weiner is a professor in obstetrics and gynecology dedicating most of his academic and research career to introduce ultrasound and Doppler ultrasound for women health. From 2014, he is the Chairman of the Division of Obstetrics and Gynecology at Rambam Medical Center and full professor at the faculty of medicine, The Technion Institute of Technology, Haifa, Israel. His sub specialty is Maternal Fetal Medicine and Ultrasound in Obstetrics and Gynecology. His previous clinical position were Director of the Maternal Fetal Medicine Unit at Lutheran Medical Center, Brooklyn, NY, (from 2003 to 2005) and Director of Ultrasound in Obstetrics and Gynecology, Rambam Medical Center, Haifa, Israel (from 2005 to 2014).

Professor Zeev Weiner combines clinical activity with research. He has published 200 peer review articles in medical journals, presented many of his research works in international meetings, he has been a reviewer in most prestigious medical journals in obstetrics and gynecology, and an editor in the Life journal. His main field of research has been ultrasound and Doppler ultrasound in Obstetrics and Gynecology. During the nineties, he made a great contribution while introducing color Doppler ultrasound for screening and detecting ovarian cancer, supported by The Israeli Cancer Association. The results of his studies were published in gynecology and ultrasound journals. His studies contributed to the introduction of transvaginal ultrasound and color Doppler ultrasound for the detection of pelvic cancer.

Continuing his research on ultrasound and Doppler ultrasound, Professor Weiner contributed to the detection for fetal anomalies and fetal cardiac circulation. He contributed to the development and the application of the very high-end ultrasound and Doppler ultrasound equipment. For many years, Professor Weiner has been teaching and demonstrating in national and international conferences and seminars the most advanced ultrasound and Doppler ultrasound equipment and modalities. Professor Weiner holds his MD degree from Sackler Faculty of Medicine, Tel Aviv University (1986) and his MHA from Recanati Business school, Tel Aviv University (2012).

Daniel H. Dickson

Board Member

Mr. Dickson has held executive-level positions in companies from Fortune 50 to start-ups and in industries from consumer products to enterprise software. He began his career at General Electric Company, where he held strategic and operating roles on corporate staff and in the company’s $1 billion consumer electronics division. He left GE to join an early-stage company in real-time networked retail distribution, where he was a key player in the company’s IPO. Mr. Dickson then assumed the role of COO for Pine Company, a privately held market research and data management company in Santa Monica, CA, where he repositioned the company as an early player in the customer relationship management (CRM) space. This led to an offer from Draper, Fisher Jurvetson, a Silicon Valley-based venture capital firm, to serve as President and CEO for one of the fund’s portfolio companies.

Mr. Dickson then assumed the position of VP of The Brenner Group, where he led the firm’s interim CEO practice as well as serving as a “parachute CEO” for multiple Silicon Valley-based venture-funded technology companies. These involved firms in the data warehousing, software development, document management, and medical industries, including Armus Corporation, which focused on clinical outcomes for small- and large-scale healthcare providers, and Vital Transport, Inc., which developed an end-to-end system for organ transplant tracking and delivery.

In 2003, Mr. Dickson returned to the East Coast, where he was recruited by Palo Alto Investors to take over as President and CEO of Best Cellars, Inc., an innovative wine retailer with locations from Massachusetts to Texas. During his tenure, the company doubled its sales and created a significant internet business. This led to the company’s acquisition by the $9 billion publicly traded A&P grocery chain in 2007.

More recently, Mr. Dickson has held executive, consulting, and board positions in the wine industry and currently maintains an independent consulting practice focusing on strategic analysis and M&A activities across multiple industries. Mr. Dickson holds a B.S. degree in Marketing and Journalism from Boston University and an M.B.A. degree from Harvard’s Graduate School of Business Administration.