Greenhill & Co Inc $1,572,901 EXCO Resources Inc $602 Crown Castle International Corp $20,105,625 Iridium Communications Inc $7,261,599 Zeta Global Holdings Corp. $840,964 Greenhill & Co Inc $1,572,901 EXCO Resources Inc $602 Crown Castle International Corp $20,105,625 Iridium Communications Inc $7,261,599 Zeta Global Holdings Corp. $840,964