James Eisenstein

James S.
Eisenstein was the founder of American Tower Corp., founded in 1995, where the title held was Chief Development Officer from 1995 to 2003.
Mr. Eisenstein was the founder of Optasite, Inc., founded in 2003, where the title held was Chairman & Chief Executive Officer from 2003 to 2008.
Mr. Eisenstein is also the founder of Concourse Communications Group LLC,Grupo TorreSur..
Mr. Eisenstein currently serves as Independent Director at InterPrivate IV InfraTech Partners, Inc. since 2021 and as Advisor at XRC Labs.
Former positions include Chairman & Chief Executive Officer at Optasite Holding Co., Inc. from 2003 to 2008; Chairman at Eaton Towers Ltd.; Independent Director at ATN International, Inc. from 2019 to 2023; Director at Nexamp, Inc. from 2011 to 2016; Director at CTI Towers, Inc. from 2012 to 2020; Independent Director at Cambridge Clean Energy Ltd. from 2015 to 2018; Independent Director at Desktop Metal, Inc. from 2021 to 2025; Deputy General Counsel at Home Shopping Network, Inc. from 1988 to 1990; Senior Associate at Columbia Capital LLC (Virginia) from 2019 to 2021; Chief Operating Officer at Amaturo Group of California Ltd. from 1990 to 1995; Associate at Skadden, Arps, Slate, Meagher & Flom LLP from 1986 to 1988; Associate at Vinson & Elkins LLP from 1984 to 1986; Operating Advisor at Point Judith Management Co LLC.
from 2010 to 2013; Chief Operating Officer & Partner at Amaturo Group Ltd. from 1990 to 1995; Vice President at Stonepeak Partners LP.
Education includes undergraduate degree from Georgetown University in 1980, MBAistration from The Wharton School of the University of Pennsylvania, and graduate degree from The University of Pennsylvania Law School.