| SC 13G/A | 2018-02-08 | VANGUARD GROUP INC | Aon plc | 17,583,612 | 7.0% | EDGAR |
| SC 13G/A | 2018-01-30 | BlackRock Inc. | Aon plc | 15,339,874 | 6.1% | EDGAR |
| SC 13G/A | 2017-02-09 | VANGUARD GROUP INC | Aon plc | 16,900,339 | 6.4% | EDGAR |
| SC 13G | 2017-02-09 | STATE STREET CORP | Aon plc | - | 5.4% | EDGAR |
| SC 13G | 2017-02-07 | MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | Aon plc | 15,217,290 | 5.8% | EDGAR |
| SC 13G/A | 2017-01-19 | BlackRock Inc. | Aon plc | 16,282,280 | 6.2% | EDGAR |
| SC 13G/A | 2016-02-16 | EAGLE CAPITAL MANAGEMENT LLC | Aon plc | 13,885,391 | 5.1% | EDGAR |
| SC 13G/A | 2016-02-12 | STATE STREET CORP | Aon plc | - | 5.2% | EDGAR |
| SC 13G | 2016-02-12 | STATE STREET CORP | Aon plc | - | 5.2% | EDGAR |
| SC 13G/A | 2016-02-10 | BlackRock Inc. | Aon plc | 15,608,333 | 5.7% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | Aon plc | 15,937,229 | 5.8% | EDGAR |
| SC 13G | 2015-02-17 | EAGLE CAPITAL MANAGEMENT LLC | Aon plc | 14,520,034 | 5.1% | EDGAR |
| SC 13G | 2015-02-12 | STATE STREET CORP | Aon plc | - | 5.3% | EDGAR |
| SC 13G | 2015-02-11 | VANGUARD GROUP INC | Aon plc | 15,099,363 | 5.3% | EDGAR |
| SC 13G | 2015-02-11 | VANGUARD GROUP INC | Aon plc | 15,099,363 | 5.3% | EDGAR |
| SC 13G/A | 2015-02-09 | BlackRock Inc. | Aon plc | 15,438,567 | 5.4% | EDGAR |
| SC 13G | 2014-02-14 | EAGLE CAPITAL MANAGEMENT LLC | Aon plc | 16,004,271 | 5.3% | EDGAR |
| SC 13G/A | 2014-02-13 | GROWTH FUND OF AMERICA | Aon plc | - | 0.0% | EDGAR |
| SC 13G/A | 2014-02-13 | Capital Research Global Investors | Aon plc | - | 0.0% | EDGAR |
| SC 13G/A | 2014-02-11 | BlackRock Inc. | Aon plc | 15,710,660 | 5.2% | EDGAR |