| SC 13G/A | 2018-02-12 | JANUS HENDERSON GROUP PLC | Knowles Corp | 0 | 0.0% | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | Knowles Corp | 7,634,227 | 8.5% | EDGAR |
| SC 13G | 2018-02-09 | DIMENSIONAL FUND ADVISORS LP | Knowles Corp | 4,944,129 | 5.5% | EDGAR |
| SC 13G/A | 2018-02-07 | FRANKLIN RESOURCES INC | Knowles Corp | 11,689,775 | 13.1% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | Knowles Corp | 9,371,743 | 10.5% | EDGAR |
| SC 13G/A | 2017-06-12 | JANUS CAPITAL MANAGEMENT LLC | Knowles Corp | 0 | 0.0% | EDGAR |
| SC 13G | 2017-06-12 | JANUS HENDERSON GROUP PLC | Knowles Corp | 10,976,709 | 12.3% | EDGAR |
| SC 13G | 2017-02-14 | SOUTHERNSUN ASSET MANAGEMENT, LLC | Knowles Corp | 6,276,407 | 7.1% | EDGAR |
| SC 13G/A | 2017-02-13 | JANUS CAPITAL MANAGEMENT LLC | Knowles Corp | 10,913,643 | 12.3% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | Knowles Corp | 7,026,321 | 7.9% | EDGAR |
| SC 13G | 2017-02-10 | SHAPIRO CAPITAL MANAGEMENT LLC | Knowles Corp | 35,000 | 0.0% | EDGAR |
| SC 13G/A | 2017-02-08 | FRANKLIN RESOURCES INC | Knowles Corp | 14,072,143 | 15.9% | EDGAR |
| SC 13G/A | 2017-02-08 | BlackRock Inc. | Knowles Corp | 8,955,823 | 10.1% | EDGAR |
| SC 13G | 2017-02-07 | PRICE T ROWE ASSOCIATES INC /MD/ | Knowles Corp | 4,586,732 | 5.1% | EDGAR |
| SC 13G/A | 2017-01-25 | BlackRock Inc. | Knowles Corp | 8,826,017 | 9.9% | EDGAR |
| SC 13G/A | 2016-02-16 | JANUS CAPITAL MANAGEMENT LLC | Knowles Corp | 10,542,649 | 11.9% | EDGAR |
| SC 13G | 2016-02-12 | SHAPIRO CAPITAL MANAGEMENT LLC | Knowles Corp | 35,000 | 0.0% | EDGAR |
| SC 13G | 2016-02-12 | SOUTHERNSUN ASSET MANAGEMENT, LLC | Knowles Corp | 6,840,018 | 7.8% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | Knowles Corp | 6,045,494 | 6.8% | EDGAR |
| SC 13G | 2016-02-10 | SHAPIRO CAPITAL MANAGEMENT LLC | Knowles Corp | 35,000 | 0.0% | EDGAR |