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Mr. Syllantavos has served as the co-CEO and CFO of GCAC since December 2019, has served as a board member and the Chair of the audit committee of ITHAX Acquisition Corp. (Nasdaq: ITHX) since January 2021 and has served as a board member of Phunware Inc. (Nasdaq: PHUN) since December 2018. Previously, Mr. Syllantavos served as co-CEO and CFO of Stellar Acquisition III Corp. (Nasdaq: STLR) from December 2015 to December 2018. Mr. Syllantavos also co-founded Nautilus Energy Management Corp. and has served as a managing director since May 2011 and has served as partner of SevenSeas Investment Fund since 2018. Mr. Syllantavos holds a degree in industrial engineering from Roosevelt University and an MBA from Northwestern University, Kellogg School of Management.