SAN ANTONIO, April 8, 2024 /PRNewswire/ -- Clear Channel Outdoor Holdings, Inc. (NYSE: CCO) (the "Company") will release 2024 first quarter results before the market opens on Thursday, May 9, 2024, by 7:00 a.m. and will host a conference call to discuss the results at 8:30 a.m. Eastern Time. The conference call number 866-424-3432 (United States callers) or +1 215-268-9862 (international callers).  A live audio webcast of the conference call will be available on the "Events & Presentations" section of the C ...