| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2018-04-10 | FMR LLC | CALGON CARBON Corp | 0 | 0.0% | EDGAR |
| SC 13D/A | 2018-03-12 | GAMCO INVESTORS, INC. ET AL | CALGON CARBON Corp | - | 0.0% | EDGAR |
| SC 13G/A | 2018-02-12 | FMR LLC | CALGON CARBON Corp | 5,938,000 | 11.7% | EDGAR |
| SC 13G/A | 2018-02-09 | DIMENSIONAL FUND ADVISORS LP | CALGON CARBON Corp | 3,367,237 | 6.6% | EDGAR |
| SC 13G | 2018-02-09 | FMR LLC | CALGON CARBON Corp | 4,763,000 | 9.4% | EDGAR |
| SC 13G/A | 2018-02-08 | VANGUARD GROUP INC | CALGON CARBON Corp | 4,905,463 | 9.6% | EDGAR |
| SC 13G/A | 2018-01-19 | BlackRock Inc. | CALGON CARBON Corp | 6,485,473 | 12.8% | EDGAR |
| SC 13D | 2018-01-08 | GAMCO INVESTORS, INC. ET AL | CALGON CARBON Corp | 1,614,612 | 3.2% | EDGAR |
| SC 13G | 2017-10-10 | SHAPIRO CAPITAL MANAGEMENT LLC | CALGON CARBON Corp | 0 | 0.0% | EDGAR |
| SC 13G/A | 2017-02-10 | VANGUARD GROUP INC | CALGON CARBON Corp | 4,344,813 | 8.6% | EDGAR |
| SC 13G | 2017-02-10 | SHAPIRO CAPITAL MANAGEMENT LLC | CALGON CARBON Corp | 0 | 0.0% | EDGAR |
| SC 13G | 2017-02-09 | DIMENSIONAL FUND ADVISORS LP | CALGON CARBON Corp | 2,661,661 | 5.3% | EDGAR |
| SC 13G/A | 2017-01-12 | BlackRock Inc. | CALGON CARBON Corp | 5,986,390 | 11.8% | EDGAR |
| SC 13G/A | 2016-05-10 | BlackRock Inc. | CALGON CARBON Corp | 5,058,950 | 10.0% | EDGAR |
| SC 13G | 2016-02-12 | SHAPIRO CAPITAL MANAGEMENT LLC | CALGON CARBON Corp | 0 | 0.0% | EDGAR |
| SC 13G/A | 2016-02-11 | Kleinwort Benson Investors Dublin Ltd | CALGON CARBON Corp | 3,087,183 | 6.0% | EDGAR |
| SC 13G/A | 2016-02-10 | VANGUARD GROUP INC | CALGON CARBON Corp | 3,988,840 | 7.8% | EDGAR |
| SC 13G/A | 2016-01-26 | BlackRock Inc. | CALGON CARBON Corp | 4,999,620 | 9.7% | EDGAR |
| SC 13G/A | 2015-02-13 | Kleinwort Benson Investors Dublin Ltd | CALGON CARBON Corp | 3,259,770 | 6.1% | EDGAR |
| SC 13G | 2015-02-13 | SHAPIRO CAPITAL MANAGEMENT LLC | CALGON CARBON Corp | 0 | 0.0% | EDGAR |