| SC 13G | 2014-02-03 | STATE STREET CORP | Aon plc | - | 5.1% | EDGAR |
| SC 13G/A | 2014-01-31 | Artisan Partners Limited Partnership | Aon plc | 13,592,401 | 4.5% | EDGAR |
| SC 13G/A | 2013-11-08 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Aon plc | - | 3.5% | EDGAR |
| SC 13G/A | 2013-02-14 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | Aon plc | - | 6.5% | EDGAR |
| SC 13G/A | 2013-02-13 | GROWTH FUND OF AMERICA INC | Aon plc | 18,142,995 | 5.7% | EDGAR |
| SC 13G | 2013-02-12 | Capital Research Global Investors | Aon plc | 26,501,995 | 8.3% | EDGAR |
| SC 13G | 2013-02-06 | ARTISAN PARTNERS HOLDINGS LP | Aon plc | 16,414,082 | 5.2% | EDGAR |
| SC 13G | 2013-01-30 | BlackRock Inc. | Aon plc | 16,102,112 | 5.0% | EDGAR |
| SC 13G | 2012-02-14 | GROWTH FUND OF AMERICA INC | AON CORP | 16,608,995 | 5.1% | EDGAR |
| SC 13G | 2012-02-14 | Capital Research Global Investors | AON CORP | 23,022,268 | 7.1% | EDGAR |
| SC 13G/A | 2012-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | AON CORP | 10,969,666 | 3.3% | EDGAR |
| SC 13G/A | 2012-02-10 | Capital World Investors | AON CORP | 11,183,000 | 3.5% | EDGAR |
| SC 13G/A | 2012-02-06 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | AON CORP | 22,948,782 | 7.1% | EDGAR |
| SC 13D/A | 2011-03-03 | RYAN PATRICK G | AON CORP | 12,846,956 | 3.9% | EDGAR |
| SC 13G/A | 2011-02-14 | Capital World Investors | AON CORP | 17,049,500 | 5.3% | EDGAR |
| SC 13G/A | 2011-02-11 | STATE STREET Corp | AON CORP | - | 4.8% | EDGAR |
| SC 13G/A | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | AON CORP | 20,125,849 | 6.1% | EDGAR |
| SC 13G/A | 2011-02-07 | SOUTHEASTERN ASSET MANAGEMENT INC/TN/ | AON CORP | 23,228,886 | 8.6% | EDGAR |
| SC 13D/A | 2010-03-17 | RYAN PATRICK G | AON CORP | 17,330,690 | 6.5% | EDGAR |
| SC 13G/A | 2010-02-12 | STATE STREET BANK & TRUST CO | AON CORP | 0 | 0.0% | EDGAR |