CONSTANTINE (COSTA) SIDERIDIS is President and CEO of Ferro-Ceramic Grinding Inc., a private Massachusetts firm specializing in the manufacture of advanced ceramic materials supplying the semiconductor, medical, aerospace, defense, electronic, and microwave industries in the US and throughout the world. Mr. Sideridis has served as a trustee and advisor for a variety of organizations, including trustee for the Hellenic American University 2022 to present, trustee associate at St. John’s Preparatory School Danvers MA 2023-present, president of the Alpha Omega Council from 2020-2022, partner at Barton & Gray Mariners Club 2023-present, partner at Bridgemedica from 2008 to 2018, founding member of the New England CEO network from 2011 to present, trustee at the Brain Science Foundation from 2011 to present, board member The National Hellenic Society 2026 to present, and Boston regional co-chair for 2014 to present, board member American Hellenic Institute 2026-present, and a member of the Order of AHEPA. Mr. Sideridis is also actively involved within the Greek Orthodox Church as he was bestowed an Archon (2015) by the Ecumenical Patriarchate’s Order of Saint Andrew, a founding member of The Ecumenical Patriarch Bartholomew Foundation, Archon regional commander for the Metropolis of Boston, co-chair of the Archon International Committee, and part of the FAITH Endowment’s Executive Education Program in Strategic Leadership and Transformative Action (SLTA) , a fulfilled member of Leadership 100, a member of the Archdiocesan council of the Greek Orthodox Archdiocese of New York, a council member of the Metropolis of Boston in Brookline, former chairman of the Metropolis camp golf tournament, and parish council Vice President board member and former Stewardship chairman of the St. George parish in Lynn, MA. Mr. Sideridis holds a Bachelor of Science degree in Ceramic Engineering (1992) and Bachelor of Arts in Economics (1992) degrees from Rutgers University. He resides in Salem, MA with his wife Allyson and their 2 boys.