Dr. Roger J. Pomerantz, M.D., F.A.C.P.


Based in the U.S., Dr. Pomerantz has extensive board experience and currently serves on the boards of Intec Pharma and VerImmune, in addition to ContraFect. He also serves as the Chairman of the Scientific Advisory Board of Aridis Pharmaceuticals. In addition, Dr. Pomerantz was a Venture Partner at Flagship Pioneering from 2014 through 2019.  Previously, Dr. Pomerantz, served as the President, Chief Executive Officer and Chairman of the Board of Seres Therapeutics, where he continues to serve as advisor. Prior to joining Seres, Dr. Pomerantz was Senior Vice President, Worldwide Head of Licensing & Acquisition at Merck & Co., Inc and prior to that was Senior Vice President and Global Franchise Head of Infectious Diseases at Merck. Prior to joining Merck, Dr. Pomerantz was Global Head of Infectious Diseases for Johnson & Johnson Pharmaceuticals.

Dr. Pomerantz received his B.A. in Biochemistry at the Johns Hopkins University and his M.D. at the Johns Hopkins School of Medicine. He received post-graduate training at the Massachusetts General Hospital, Harvard Medical School and M.I.T. Dr. Pomerantz is Board Certified in both Internal Medicine and Infectious Diseases. He was Professor of Medicine, Biochemistry and Molecular Pharmacology, Chief of Infectious Diseases, and the Founding Director and Chair of the Institute for Human Virology and Biodefense at the Thomas Jefferson University and Medical School. He has developed twelve small and large molecular drugs approved world-wide in important diseases, including HIV, HCV,CMV, C. Diff, and tuberculosis.

Yehiel Tal

Chief Executive Officer, Director

Yehiel Tal serves as our chief executive officer since January 2010, and joined our board of directors on May 2022.

Mr. Tal possesses over 25 years of management experience in the Israeli and American high-tech and biotechnology industries. Prior to joining us, Mr. Tal was the chief executive officer and co-founder of Regentis Biomaterials Ltd. Prior to that Mr. Tal served as vice-president of business development at ProChon BioTech Ltd. He has also served as vice president of marketing and business development at OrthoScan Technologies Ltd. and director of business development and business unit manager at Kulicke and Soffa Industries, Inc. Mr. Tal holds a Bachelor's and a Master's degree in mechanical engineering from the Technion, Israel Institute of Technology.

Hugh Evans


U.S.-based Mr. Evans brings extensive board, 3D printing technology, and investment experience to CollPlant. He currently serves on the boards of four manufacturing technology companies including Factory Four, ZVerse, 3DM, and is also a Non-Executive Chairman of Culinary Printworks. He was formerly a board member of AquaVenture Holdings, which was acquired by Culligan International.

Mr. Evans served as Senior Vice President of Corporate Development & Digitization at 3D Systems Corporation, a leading 3D printing company, where he led M&A, venture capital investments, joint ventures, and technology licensing. Previously, he served as a portfolio manager at T. Rowe Price Associates in Baltimore, Maryland for over 20 years.

Dr. Abraham Havron


Dr. Abraham Havron has served on our board of directors since May 2016. Dr. Havron is a 37-year veteran of the biotechnology industry. Since 2011, Dr. Havron has been serving a director at Kamada (NASDAQ: KMDA) where he was initially elected as an external director (within the meaning of the Companies Law) and served in such capacity until January 30, 2017, since which time he has served as an ordinary (non-external) director. From 2005 to 2013, Dr. Havron has served as the Chief Executive Officer and a director of PROLOR Biotech Ltd., which in 2013 merged with OPKO Health Inc. Dr. Havron was a member of the founding team and Director of Research and Development of Interpharm Laboratories Ltd. (a subsidiary of Merck Serono S.A.) from 1980 to 1987. Dr. Havron served as Vice-President Manufacturing and Process—Development of BioTechnology General Ltd., based in Rehovot, Israel (now, a subsidiary of Ferring Pharmaceuticals) from 1987 to 1999; and Vice President and Chief Technology Officer of Clal Biotechnology Industries Ltd. from 1999 to 2003. Since 2014, Dr. Havron has also served on the board of directors of MediWound Ltd. (NASDAQ: MDWD) until June 2017 and Enlivex Theraputics Ltd., a private company. Dr. Havron earned his PhD in Bio-Organic Chemistry from the Weizmann Institute of Science, and served as a Research Fellow at the Harvard Medical School, Department of Radiology.

Alisa Lask


Ms. Lask is the former Vice President and General Manager of US Aesthetics at Galderma. Previously, she was a Senior Director of Global Strategic Marketing of Facial Aesthetics at Allergan. Earlier, she held strategic marketing positions at both Zimmer Biomet and Eli Lilly. Ms. Lask received an M.B.A from the University of Michigan and has a B.A. in marketing from Miami University, Oxford, Ohio.

Dr. Elan Penn


Dr. Elan Penn has served on our board of directors since January 2018. Dr. Penn has served as chief executive officer and chairman of Penn Publishing Ltd., a private company based in Tel Aviv, Israel since 2001. From 2000 to 2001, Dr. Penn served as vice president of finance and administration of A.I. Research and Development Ltd. Dr. Penn served as chief executive officer of Sivan Computer Training Company Ltd. during the years 1998 through 2000. From 1992 to 2000, Dr. Penn served as vice president of finance and administration of Mashov Computers Ltd. From 1987 to 1991 and again from 1992 to 1997, Dr. Penn served as vice president of finance and administration of Magic Software Enterprises Ltd. (NASDAQ: MGIC) and from 2005 to 2014 served as an external director of Magic Software. Dr. Penn previously served as a director of Telkoor Power Supplies Ltd. (TASE: TLCR) and Nexgen Biofuels Ltd. (formerly Healthcare Technologies Ltd) (OTC: NXGN). Dr. Penn holds a B.A. degree in Economics from the Hebrew University of Jerusalem and a Ph.D. in Management Science from the University of London.

Joseph Zarzewsky


Joseph Zarzewsky has served as the Vice President of Business Development at the Mitrelli Group (“Mitrelli”) since June 2010. Mr. Zarzewsky has served as the Chairman of “SMAD”, a joint venture between Mitrelli and the Harbin Government, China, since June 2011. Mr. Zarzewsky has also served as the Chairman of the Investment Committee of the Harbin Israel Fund since 2012, and as a member of the board of directors of Wize Pharma, Inc. (OTCQB: WIZP) since November 2017. He has also previously served as the Vice President of marketing at Clal Insurance Enterprises Holdings Ltd. (TASE: CLIS) and as the Vice President of Marketing for the Israel Postal Authority. In addition, Mr. Zarzewsky has served as a director of Excellence Underwriter House Ltd. since 2007. In 2008, he was appointed as the Honorary Economic Advisor of the Harbin Government, China. In addition, in June 2012, he was honored as an Honorary Citizen of Harbin, China. Mr. Zarzewsky holds an MA in Commercial Law from the University of Tel Aviv in collaboration with the University of California, Berkeley.