Management Team

Michael M. Toporek
CEO & President

Michael M. Toporek has served as CEO and President since April 1, 2020, and as a director since July 14, 2017. Mr. Toporek has served as a director of Mechanical Technology, Incorporated (MKTY) since October 21, 2016. Since 2003, Mr. Toporek has served as the Managing General Partner of Brookstone Partners, a lower middle market private equity firm based in New York and an affiliate of BV Peptides, LLC. Prior to founding Brookstone Partners in 2003, Mr. Toporek was both an active principal investor and an investment banker. Mr. Toporek began his career in Chemical Bank’s Investment Banking Group, later joined Dillon, Read and Co., which became UBS Warburg Securities Ltd. during his tenure, and SG Cowen and Company. Mr. Toporek currently serves on the Board of Trustees of Harlem Academy. Mr. Toporek has a B.A. in Economics and an M.B.A from the University of Chicago.

Omar Rabbani
Vice President, Treasurer and Chief Financial Officer

Omar Rabbani joined the Company as Vice President, Treasurer, and Chief Financial Officer on April 1, 2020.  Mr. Rabbani also serves as Chief Financial Officer of TotalStone, LLC. (“InStone”).  Prior to his employment with Capstone and TotalStone, Mr. Rabbani was employed as Director of Financial Planning and Analysis for Duravant LLC. He holds a Bachelor’s degree in Accounting from the University of Illinois at Urbana-Champaign.