| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2024-02-13 | VANGUARD GROUP INC | ChampionX Corp | 20,033,091 | 10.3% | EDGAR |
| SC 13G/A | 2024-01-23 | BlackRock Inc. | ChampionX Corp | 23,767,417 | 12.2% | EDGAR |
| SC 13G/A | 2023-02-09 | VANGUARD GROUP INC | ChampionX Corp | 20,156,512 | 10.1% | EDGAR |
| SC 13G/A | 2023-01-26 | BlackRock Inc. | ChampionX Corp | 23,726,460 | 11.9% | EDGAR |
| SC 13G | 2023-01-20 | BlackRock Inc. | ChampionX Corp | 23,726,460 | 11.9% | EDGAR |
| SC 13G/A | 2022-11-10 | VANGUARD GROUP INC | ChampionX Corp | 20,337,316 | 10.2% | EDGAR |
| SC 13G/A | 2022-02-14 | Boston Partners | ChampionX Corp | 7,253,599 | 3.6% | EDGAR |
| SC 13G/A | 2022-02-09 | VANGUARD GROUP INC | ChampionX Corp | 19,782,623 | 9.8% | EDGAR |
| SC 13G/A | 2022-01-27 | BlackRock Inc. | ChampionX Corp | 24,374,728 | 12.1% | EDGAR |
| SC 13G/A | 2022-01-26 | BlackRock Inc. | ChampionX Corp | 24,374,728 | 12.1% | EDGAR |
| SC 13G/A | 2021-02-11 | Boston Partners | ChampionX Corp | 10,012,479 | 5.0% | EDGAR |
| SC 13G/A | 2021-02-10 | VANGUARD GROUP INC | ChampionX Corp | 18,550,378 | 9.3% | EDGAR |
| SC 13G/A | 2021-01-27 | BlackRock Inc. | ChampionX Corp | 21,977,896 | 11.0% | EDGAR |
| SC 13G | 2020-07-10 | BlackRock Inc. | ChampionX Corp | 23,048,767 | 11.2% | EDGAR |
| SC 13G | 2020-06-15 | CAPITAL VENTURES INTERNATIONAL | ChampionX Corp | 12,707,928 | 6.4% | EDGAR |
| SC 13G/A | 2020-02-12 | VANGUARD GROUP INC | Apergy Corp | 7,228,139 | 9.3% | EDGAR |
| SC 13G/A | 2020-02-10 | Boston Partners | Apergy Corp | 4,626,137 | 6.0% | EDGAR |
| SC 13G/A | 2020-02-05 | BlackRock Inc. | Apergy Corp | 7,027,744 | 9.1% | EDGAR |
| SC 13G | 2019-02-14 | Boston Partners | Apergy Corp | 5,884,010 | 7.6% | EDGAR |
| SC 13G | 2019-02-11 | VANGUARD GROUP INC | Apergy Corp | 7,030,897 | 9.1% | EDGAR |