Our Team

Jonathan Kalman – CEO

Jonathan Kalman is the founder and CEO of Dion Holding Ltd, which invests in early-stage Israeli technology companies with an emphasis on biopharma and medical devices. Jonathan was a member of the Board of Directors of Neuroderm (NDRM) from November 2014 until its acquisition by Mitsubishi Tanabe Pharma Corporation in October 2017 for $1.1 Billion.

Jonathan is currently a director of Revelator Ltd., a leading supplier of data services for today’s digital rights business. He is also on the board of directors of The Jerusalem Print Workshop, a non-profit art center dedicated to the advancement of the graphic arts in Israel.

William Z. Levine, DDS – Founder and Chief Scientific Officer

Dr. Bill Levine is the founder of Izun Pharmaceuticals Corporation, a biopharmaceutical company specializing in Botanical Medicine. This area of specialty pharma develops pharmaceutical and healthcare products from plant-based sources. Bill, who received his DDS degree and specialty training in Periodontics from Columbia University, initially utilized this background to formulate novel oral care products to treat periodontal disease more effectively.

Leslie Kraus – CFO/COO

Les Kraus commenced as CFO/COO of Izun in 2013. For the 12 years prior to this, Les served as Chief Financial Officer of Retail Apparel Group Pty Ltd (RAG), the largest menswear retailer in Australia. During his time at RAG, Les managed two sale processes to private equity firms. He is a qualified Chartered Accountant in Australia and has over 30 years of operational and financial experience within the clothing industry, covering both retail and wholesale businesses.

Gabriel Nussbaum, MD, Ph.D. – Director of Scientific Affairs

Gabe joined the Izun team in 2004 and continues to be instrumental in the development of Izun’s products. A basic science researcher and clinician, Gabe is a US board-certified physician for internal medicine and has performed graduate studies and post-doctoral research in inflammation at the Weizmann Institute of Science, an international center of scientific research in Rehovot, Israel. Dr. Nussbaum has numerous publications.

Amy Rosenbluh, Ph.D. – Director of Production, Laboratory Director

Amy joined Izun in 2006, initially as Director of the R&D and QC Laboratory, and has since added Director of Production to her responsibilities. Amy obtained her Master’s degree from Harvard University and her PhD from Tel Aviv University in Israel, with post-doctoral fellowships at both Stanford University and the Weizmann Institute of Science in Rehovot, Israel.

Amy brings to Izun rich experience in academic research and in managerial positions, both in academia and in the private sector. Dr. Rosenbluh holds a patent and has published a chapter in a book as well as numerous articles.

Simcha Mann – Chairman

Sim Mann is Chief Strategy Officer and Partner of Exigent Capital Group and is responsible for driving new strategic initiatives for Exigent. Sim is responsible for venture capital related investments and heads the distressed debt practice.

Prior to joining Exigent, Sim invested over $1B in distressed debt and special situation investments in Europe and Israel on behalf of York Capital Management, a global investment firm. During that time, he played a key role in three of the largest corporate debt restructurings in Israel’s history and supported the successful transformation of Psagot from the 6th largest asset manager in Israel into the largest, before successfully selling the business to Apax Partners.

For over eight years, Sim was also intimately involved in early to late-stage technology investments and multi-jurisdictional European public and private credit opportunities.

Alan Adler

Alan Adler was Chairman of the Board and CEO of Israeli-based Oridion Ltd, a global leader in patient monitoring systems, from 2004 until the company was acquired by a major American healthcare conglomerate, Covidien (now Medtronic), in 2012.

Prior to that, he had over 30 years of experience as a consultant and partner at McKinsey & Company and, afterward, as a partner at Evergreen, the Israeli venture capital group. He has served as a director on the Boards of numerous technology and life science companies and currently also serves as a director on the Boards of the Pardes Institute of Jewish Studies and Shalem College.

Alan holds a B.Sc. in Mathematics from Rensselaer Polytechnic Institute and an MBA with honors from Stanford University.

Jonathan Kalman

Jonathan Kalman is the founder and CEO of Dion Holding Ltd, which invests in early-stage Israeli technology companies with an emphasis on biopharma and medical devices. Jonathan was a member of the Board of Directors of Neuroderm (NDRM) from November 2014 until its acquisition by Mitsubishi Tanabe Pharma Corporation in October 2017 for $1.1 Billion.

Jonathan is currently a director of Revelator Ltd., a leading supplier of data services for today’s digital rights business. He is also on the board of directors of The Jerusalem Print Workshop, a non-profit art center dedicated to the advancement of the graphic arts in Israel.

Oscar Straus Schafer

Mr. Schafer is the Chairman of Rivulet Capital, LLC, a private investment partner, which he seeded in 2012.

Prior to Rivulet, Mr. Schafer founded O.S.S. Capital Management in 2001. Between 1982 and 2001, he was a member of Cumberland Associates. Prior to that, Mr. Schafer was a General Partner at Steinhardt, Fine, Berkowitz, & Co. from 1970 to 1982. He began his investment career with positions at Kuhn, Loeb & Co., Havenfield Corp., and Boxwood Associates between 1964 and 1970. He has been a member of the Barron’s Roundtable for 30 years.

Mr. Schafer earned a BA, Magna Cum Laude, at Harvard College in 1961 and an MBA at Harvard Business School in 1964.

He has served on The Visiting Committee for the Department of Music at Harvard and funds The Oscar Straus Schafer Fellowship for teachers of Harvard’s introductory music course. He currently serves on the board of the Schafer Family Foundation, which supports the arts and social service organizations, and on the Board of Trustees at New York Presbyterian Hospital. Mr. Schafer joined the board of The NY Philharmonic Orchestra in 2007 and became its Chairman in January 2015.

Mr. Schafer is married to Didi Fenton-Schafer, who serves on the Board of the Central Park Conservancy and is Vice Chairman of the New York Common Pantry. The couple are special event donors and were underwriters of the New York Philharmonic’s 9/11 Tenth Anniversary Concert. Since the summer of 2007, Mr. & Mrs. Schafer have presented the Philharmonic’s annual Concerts in the Parks and, as a tribute to his wife, Mr. Schafer conducted the orchestra in Central Park in July 2013.

Walter Tabachnik

Walter was the CFO of Oridion Ltd, a publicly-traded company in Switzerland and a global leader in patient monitoring systems, for most of his career. Following the sale of Oridion to Covidien (today Medtronic), Walter continued with Medtronic in different management roles both overseas and in Israel for a number of years.

Today, Walter is the CFO of Medasense Biometrics Ltd and the Chairman of the Board for MazeBolt Ltd.

Walter is a Certified Public Accountant with a BA degree in Accounting and Economics from the Hebrew University of Jerusalem.

Steve Sonis, DMD, DMSc

Professor, Harvard-Forsyth Oral Biology, Harvard School of Dental Medicine, Dana-Farber Cancer Institute, Brigham and Women’s Hospital. A world-renowned expert in epithelial injury associated with cancer therapy. Dr. Sonis is the former President of Triad, which focused on the adverse health and economic outcomes of cancer treatment toxicities, and serves as a special government employee of the FDA.

Robert Den, MD

Dr. Den specializes in radiation oncology and conducts innovative research across a broad variety of malignancies. He serves as an Associate Professor and a clinical practitioner at Jefferson University and as Chief Medical Officer of Alpha Tau Medical.

Dr. Den received his medical degree from Harvard Medical School. Today, his focus is on improving the lives of patients suffering from cancer through the incorporation of novel agents with radiation therapy.

Jordi Girlat, MD

Dr. Giralt is currently Head of the Radiation Oncology Group at the Vall d’Hebron Institute of Oncology (VHIO) in Barcelona, Spain, Head of the Radiation Oncology Department at the Vall d’Hebron University Hospital, and Professor in Radiation Oncology at the Autonoma University of Barcelona. He is a member of the European Society for Radiation Therapy and Oncology (ESTRO), and the American Society of Radiation Oncology (ASTRO), and serves on many Editorial Boards including the Oral Oncology, Frontiers in Oncology, and Clinical Translational Oncology. He has (co) authored approximately 80 peer-reviewed papers.

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