| SC 13G/A | 2019-01-31 | BlackRock Inc. | SIMPSON MANUFACTURING CO INC /CA/ | 6,239,571 | 13.6% | EDGAR |
| SC 13G | 2018-06-12 | SIMPSON SHARON H | SIMPSON MANUFACTURING CO INC /CA/ | 4,316,501 | 9.3% | EDGAR |
| SC 13G/A | 2018-02-12 | VANGUARD GROUP INC | SIMPSON MANUFACTURING CO INC /CA/ | 3,689,719 | 7.8% | EDGAR |
| SC 13G/A | 2018-02-12 | VANGUARD GROUP INC | SIMPSON MANUFACTURING CO INC /CA/ | 3,689,719 | 7.8% | EDGAR |
| SC 13G/A | 2018-02-06 | JANUS CAPITAL MANAGEMENT LLC | SIMPSON MANUFACTURING CO INC /CA/ | 1,368,353 | 2.9% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | SIMPSON MANUFACTURING CO INC /CA/ | 5,640,565 | 11.9% | EDGAR |
| SC 13G/A | 2017-02-14 | ARIEL INVESTMENTS, LLC | SIMPSON MANUFACTURING CO INC /CA/ | - | - | EDGAR |
| SC 13G/A | 2017-02-13 | JANUS CAPITAL MANAGEMENT LLC | SIMPSON MANUFACTURING CO INC /CA/ | 2,794,330 | 5.9% | EDGAR |
| SC 13G/A | 2017-02-13 | VANGUARD GROUP INC | SIMPSON MANUFACTURING CO INC /CA/ | 3,437,990 | 7.2% | EDGAR |
| SC 13G/A | 2017-01-09 | BlackRock Inc. | SIMPSON MANUFACTURING CO INC /CA/ | 4,774,034 | 10.0% | EDGAR |
| SC 13G | 2016-02-16 | JANUS CAPITAL MANAGEMENT LLC | SIMPSON MANUFACTURING CO INC /CA/ | 2,730,663 | 5.6% | EDGAR |
| SC 13G/A | 2016-02-12 | ARIEL INVESTMENTS, LLC | SIMPSON MANUFACTURING CO INC /CA/ | - | - | EDGAR |
| SC 13G/A | 2016-02-11 | VANGUARD GROUP INC | SIMPSON MANUFACTURING CO INC /CA/ | 3,073,196 | 6.4% | EDGAR |
| SC 13G/A | 2016-01-27 | BlackRock Inc. | SIMPSON MANUFACTURING CO INC /CA/ | 4,362,374 | 9.0% | EDGAR |
| SC 13G/A | 2015-12-07 | ROYCE & ASSOCIATES LLC | SIMPSON MANUFACTURING CO INC /CA/ | 1,369,233 | 2.8% | EDGAR |
| SC 13G/A | 2015-02-13 | ARIEL INVESTMENTS, LLC | SIMPSON MANUFACTURING CO INC /CA/ | - | - | EDGAR |
| SC 13G/A | 2015-02-11 | VANGUARD GROUP INC | SIMPSON MANUFACTURING CO INC /CA/ | 2,789,215 | 5.7% | EDGAR |
| SC 13G/A | 2015-02-05 | FRANKLIN RESOURCES INC | SIMPSON MANUFACTURING CO INC /CA/ | 2,423,680 | 5.0% | EDGAR |
| SC 13G/A | 2015-01-23 | BlackRock Inc. | SIMPSON MANUFACTURING CO INC /CA/ | 3,981,098 | 8.1% | EDGAR |
| SC 13G/A | 2015-01-21 | ROYCE & ASSOCIATES LLC | SIMPSON MANUFACTURING CO INC /CA/ | 4,014,293 | 8.2% | EDGAR |