List of insiders holdings for Sotera Health Co:
- Shares directly owned by the insider.
- Shares indirectly owned by the insider.
- Total shares owned by the insider (sum of shares directly and indirectly owned).
- Total market value if available.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| # | Insider Holder Name | Report Date Time | Shares Owned Directly Indirectly | Total Shares Owned | Filing |
| 1 | Petras Michael B. Jr. Executive Chairman | 2026-08-19 16:24:35 | 397,912 3,969,393 | 4,367,305 | Form 4 |
| 2 | Leffler Scott J. CFO and Treasurer | 2022-03-04 16:13:34 | 1,058,037 0 | 1,058,037 | Form 4 |
| 3 | SHADER ALTON Chief Executive Officer | 2026-05-27 17:54:27 | 681,390 0 | 681,390 | Form 4 |
| 4 | Klaben Matthew J Interim SVP, GC and Secretary | 2022-10-07 16:24:47 | 194,214 314,286 | 508,500 | Form 3 |
| 5 | Lyons Jonathan M. Sr. Vice President, CFO | 2026-08-07 16:16:11 | 374,256 0 | 374,256 | Form 4 |
| 6 | Rutz Michael P President of Sterigenics | 2026-08-11 16:24:41 | 334,279 0 | 334,279 | Form 4 |
| 7 | DIMITRIEF ALEXANDER Former SVP, GC and Sec. | 2026-04-02 16:56:55 | 312,040 0 | 312,040 | Form 4 |
| 8 | Klee Ann R. Director | 2026-05-27 20:27:22 | 140,926 0 | 140,926 | Form 4 |
| 9 | Hammons Terry SVP, GC and Secretary | 2022-03-04 16:14:30 | 126,404 0 | 126,404 | Form 4 |
| 10 | Ostrowski Erika SVP, General Counsel and Sec. | 2026-04-08 16:02:10 | 104,073 0 | 104,073 | Form 3 |
| 11 | Chen Ruoxi Director | 2026-05-27 17:23:34 | 95,751 0 | 95,751 | Form 4 |
| 12 | PETRELLA VINCENT K Director | 2026-05-27 17:25:58 | 95,751 0 | 95,751 | Form 4 |
| 13 | Neary James Director | 2026-05-27 17:28:07 | 95,751 0 | 95,751 | Form 4 |
| 14 | CUNNINGHAM SEAN LAURENCE Director | 2026-05-27 17:38:30 | 95,751 0 | 95,751 | Form 4 |
| 15 | Wheadon David E. Director | 2026-05-27 17:19:20 | 89,882 0 | 89,882 | Form 4 |
| 16 | MIHAS CONSTANTINE S Director | 2025-05-27 16:42:53 | 80,781 0 | 80,781 | Form 4 |
| 17 | Donnini David Director | 2024-05-29 16:34:23 | 61,649 0 | 61,649 | Form 4 |
| 18 | Knauss Robert Brown Director | 2025-05-27 16:48:11 | 54,933 0 | 54,933 | Form 4 |
| 19 | Flynn Karen Director | 2026-05-27 17:36:23 | 54,191 0 | 54,191 | Form 4 |
| 20 | Simon Christopher Director | 2026-05-27 17:21:37 | 34,102 0 | 34,102 | Form 4 |
| 21 | GEVEDA STEPHANIE Director | 2022-05-31 17:39:14 | 25,848 0 | 25,848 | Form 4 |
| 22 | Kyle Richard G Director | 2026-05-27 17:43:01 | 14,970 0 | 14,970 | Form 4 |
| 23 | Krause Kenneth D. Director | 2026-05-27 17:40:51 | 14,970 0 | 14,970 | Form 4 |
| 24 | WARBURG PINCUS & CO. Warburg Pincus (Bermuda) Private Equity GP Ltd. Warburg Pincus (Cayman) XI L.P. WARBURG PINCUS LLC Warburg Pincus Partners GP LLC Warburg Pincus Partners II (Cayman) L.P. Warburg Pincus Private Equity XI-C L.P. Warburg Pincus XI-C LLC Director 10% Owner | 2026-05-15 16:57:53 | 0 0 | 0 | Form 13G |
| 25 | WARBURG PINCUS & CO. Bull Co-Invest L.P. Warburg Pincus Private Equity XI L.P. Bull Holdco L.P. Warburg Pincus Partners II L.P. Warburg Pincus Private Equity XI-B L.P. Warburg Pincus XI Partners L.P. Warburg Pincus XI L.P. WP Global LLC WP XI Partners L.P. Director 10% Owner | 2026-05-15 16:57:53 | 0 0 | 0 | Form 13G |
| 26 | BIEHL MICHAEL F Interim CFO | 2022-07-26 17:02:58 | 0 0 | 0 | Form 3 |
| 27 | GTCR INVESTMENT XI LLC GTCR FUND XI GTCR FUND XI GTCR CO-INVEST XI LP GTCR PARTNERS XI/A&C LP Director 10% Owner | 2026-05-15 16:41:26 | 0 0 | 0 | Form 4 |