Executive Management

Image for Howard S. JonasChief Executive Officer
Howard S. Jonas
Chief Executive Officer

Howard S. Jonas serves as Chairman of the Board of Directors of the Company and as its Chief Executive Officer.
Mr. Jonas has been a director of Rafael Pharmaceuticals since April 2013 and was appointed Chairman of the Board in April 2016
Mr. Jonas founded IDT Corporation in August 1990, and has served as Chairman of its Board of Directors since its inception. He also served as IDT's Chief Executive Officer from October 2009 through December 2013. Mr. Jonas has served as Chairman of the Board of Directors of Genie Energy Ltd. since January 2011, when it was spun off from IDT, and served as Chief Executive Officer of Genie from January 2014 until November 2017. Mr. Jonas served as the Chairman of the Board of Zedge, Inc., a former subsidiary of IDT that was spun off to stockholders in June 2016, from June 2016 to November 2016, and has served as the Vice-Chairman of Zedge since November 2016. Mr. Jonas also serves as Chief Executive Officer and Chairman of the Board of IDW Media Holdings, Inc., a former subsidiary of IDT that was spun off to stockholders in September 2009. Mr. Jonas is also the founder and has been President of Jonas Media Group (f/k/a Jonas Publishing) since its inception in 1979.
Mr. Jonas received a B.A. in Economics from Harvard University.

Image for Menachem AshPresident and General Counsel
Menachem Ash
President and General Counsel

Menachem Ash serves as the Company's President and General Counsel. He has served as Executive Vice President of Strategy and Legal Affairs of IDT since October 2012. Mr. Ash served as the managing attorney of the IDT’s legal department from June 2011 to October 2012. Mr. Ash has served as senior counsel to several IDT divisions since he joined the IDT in July 2004, including IDT Telecom and IDT Carmel. Prior to joining the IDT, Mr. Ash served as General Counsel to Telstar International, Inc., a telecommunications services provider. Mr. Ash also worked at KPMG as a senior associate in its tax group focusing on financial services and technology companies. He is a graduate of Brooklyn College and the Benjamin N. Cardozo School of Law

Image for David A. Polinsky, Esq.Chief Financial Officer
David A. Polinsky, Esq.
Chief Financial Officer

David Polinsky has served as Chief Financial Officer of the Company since December 2017. Mr. Polinsky co-founded Rafael Pharmaceuticals and served as its Vice President, General Counsel and Corporate Secretary from 2002, and as President, General Counsel and Secretary from 2016 through March 2018. He also served on Rafael Pharmaceutical’s Board from 2002 until 2014. Mr. Polinsky also serves as Chairman of the Board of TheGiftBox, a company he co-founded in the technology sector. Prior to joining Cornerstone, he served as Vice President and General Counsel for a New York-based real estate focused investment and management company, Square Management Corp., leading the investment analysis in and management of residential, office, retail and development properties. Previously and in partnership with the Honorable Edward I. Koch, former Mayor of New York City, Mr. Polinsky founded and served as CEO of a company that licensed and developed TheLaw.com. Mr. Polinsky earned his Juris Doctorate from Fordham University School of Law in 1996 and his Bachelor of Arts from Yeshiva University. Mr. Polinsky also earned the CFA Institute’s Investment Foundations certificate.