| SC 13G/A | 2019-02-12 | VANGUARD GROUP INC | TREX CO INC | 5,968,147 | 10.2% | EDGAR |
| SC 13G/A | 2019-01-31 | BlackRock Inc. | TREX CO INC | 8,917,567 | 15.2% | EDGAR |
| SC 13G/A | 2018-11-13 | VANGUARD GROUP INC | TREX CO INC | 5,889,825 | 10.0% | EDGAR |
| SC 13G | 2018-02-14 | Clearbridge Investments, LLC | TREX CO INC | 1,703,019 | 5.8% | EDGAR |
| SC 13G/A | 2018-02-08 | VANGUARD GROUP INC | TREX CO INC | 2,703,458 | 9.2% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | TREX CO INC | 3,974,637 | 13.5% | EDGAR |
| SC 13G/A | 2017-02-14 | Clearbridge Investments, LLC | TREX CO INC | 1,280,886 | 4.4% | EDGAR |
| SC 13G/A | 2017-02-14 | BAMCO INC /NY/ | TREX CO INC | 1,234,500 | 4.2% | EDGAR |
| SC 13G | 2017-02-07 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | TREX CO INC | 10 | 12.0% | EDGAR |
| SC 13G/A | 2017-01-17 | BlackRock Inc. | TREX CO INC | 3,431,110 | 11.7% | EDGAR |
| SC 13G/A | 2017-01-10 | VANGUARD GROUP INC | TREX CO INC | 3,054,112 | 10.4% | EDGAR |
| SC 13G/A | 2016-03-10 | BlackRock Inc. | TREX CO INC | 3,209,309 | 10.8% | EDGAR |
| SC 13G/A | 2016-02-16 | BAMCO INC /NY/ | TREX CO INC | 1,813,500 | 5.9% | EDGAR |
| SC 13G/A | 2016-02-16 | Clearbridge Investments, LLC | TREX CO INC | 1,838,165 | 6.0% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | TREX CO INC | 2,123,836 | 6.9% | EDGAR |
| SC 13G | 2016-02-03 | BARROW HANLEY MEWHINNEY & STRAUSS LLC | TREX CO INC | 1,577,473 | 5.1% | EDGAR |
| SC 13G/A | 2016-01-27 | BlackRock Inc. | TREX CO INC | 2,162,407 | 7.0% | EDGAR |
| SC 13G/A | 2015-10-27 | JPMORGAN CHASE & CO | TREX CO INC | 627,385 | 1.9% | EDGAR |
| SC 13G/A | 2015-04-10 | LORD, ABBETT & CO. LLC | TREX CO INC | 1,363,730 | 4.2% | EDGAR |
| SC 13G | 2015-02-17 | BAMCO INC /NY/ | TREX CO INC | 1,890,262 | 5.9% | EDGAR |