| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G/A | 2022-02-14 | WARBURG PINCUS & CO. | Sotera Health Co | 175,695,524 | 62.1% | EDGAR |
| SC 13G/A | 2022-02-11 | GTCR INVESTMENT XI LLC | Sotera Health Co | 175,695,524 | 62.1% | EDGAR |
| SC 13G | 2021-02-12 | GTCR INVESTMENT XI LLC | Sotera Health Co | 198,216,494 | 69.7% | EDGAR |
| SC 13G | 2021-02-12 | WARBURG PINCUS & CO. | Sotera Health Co | 198,216,494 | 69.7% | EDGAR |