 DUBLIN, Oct. 8, 2021 PRNewswire -- Aon plc NYSE: AON, a leading global professional services firm, plans to announce third quarter 2021 results on Friday, October 29th, 2021 in a news release to be issued at 5:00 am Central Time. Greg Case, CEO, will host a conference call at 7:30 am Central Time on Friday, October 29th, 2021. 