Greenhill & Co Inc $1,572,901 EXCO Resources Inc $602 Crown Castle International Corp $19,132,615 Iridium Communications Inc $7,604,007 Zeta Global Holdings Corp. $908,937 Greenhill & Co Inc $1,572,901 EXCO Resources Inc $602 Crown Castle International Corp $19,132,615 Iridium Communications Inc $7,604,007 Zeta Global Holdings Corp. $908,937