| SC 13G | 2018-06-29 | Caselton Investments LLC | U.S. SILICA HOLDINGS, INC. | 6,848,155 | 8.8% | EDGAR |
| SC 13G/A | 2018-06-11 | VANGUARD GROUP INC | U.S. SILICA HOLDINGS, INC. | 7,827,591 | 10.0% | EDGAR |
| SC 13G | 2018-05-07 | MORGAN STANLEY | U.S. SILICA HOLDINGS, INC. | 3,901,384 | 5.0% | EDGAR |
| SC 13G/A | 2018-02-14 | Capital World Investors | U.S. SILICA HOLDINGS, INC. | 1,707,000 | 2.1% | EDGAR |
| SC 13G/A | 2018-02-13 | ARIEL INVESTMENTS, LLC | U.S. SILICA HOLDINGS, INC. | - | - | EDGAR |
| SC 13G/A | 2018-02-09 | VANGUARD GROUP INC | U.S. SILICA HOLDINGS, INC. | 7,592,422 | 9.3% | EDGAR |
| SC 13G/A | 2018-01-23 | BlackRock Inc. | U.S. SILICA HOLDINGS, INC. | 10,676,019 | 13.1% | EDGAR |
| SC 13G | 2017-02-13 | Capital World Investors | U.S. SILICA HOLDINGS, INC. | 5,852,071 | 7.3% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | U.S. SILICA HOLDINGS, INC. | 6,680,102 | 8.4% | EDGAR |
| SC 13G/A | 2017-01-31 | FIRST TRUST PORTFOLIOS LP | U.S. SILICA HOLDINGS, INC. | 64,000 | 0.1% | EDGAR |
| SC 13G/A | 2017-01-30 | INTEGRATED CORE STRATEGIES (US) LLC | U.S. SILICA HOLDINGS, INC. | 2,504,637 | 3.1% | EDGAR |
| SC 13G/A | 2017-01-17 | BlackRock Inc. | U.S. SILICA HOLDINGS, INC. | 8,720,952 | 12.3% | EDGAR |
| SC 13G/A | 2016-11-10 | ARIEL INVESTMENTS, LLC | U.S. SILICA HOLDINGS, INC. | - | - | EDGAR |
| SC 13G/A | 2016-02-12 | ARIEL INVESTMENTS, LLC | U.S. SILICA HOLDINGS, INC. | - | - | EDGAR |
| SC 13G/A | 2016-02-11 | MORGAN STANLEY | U.S. SILICA HOLDINGS, INC. | 1,958,556 | 3.7% | EDGAR |
| SC 13G/A | 2016-02-11 | VANGUARD GROUP INC | U.S. SILICA HOLDINGS, INC. | 4,246,824 | 8.0% | EDGAR |
| SC 13G/A | 2016-01-25 | FIRST TRUST PORTFOLIOS LP | U.S. SILICA HOLDINGS, INC. | 4,696,667 | 8.8% | EDGAR |
| SC 13G/A | 2016-01-11 | ICS OPPORTUNITIES, LTD. | U.S. SILICA HOLDINGS, INC. | 132,080 | 0.0% | EDGAR |
| SC 13G/A | 2016-01-08 | BlackRock Inc. | U.S. SILICA HOLDINGS, INC. | 5,555,211 | 10.4% | EDGAR |
| SC 13G | 2015-03-31 | ICS OPPORTUNITIES, LTD. | U.S. SILICA HOLDINGS, INC. | 1,668,859 | 3.1% | EDGAR |