Over the 90-day window ending January 10, 2026, Sotera Health's three dominant insider ownership positions are held by Director Pincus & Co. Warburg (34.10Mn shares), Director Investment Xi Llc Gtcr (22.74Mn shares), Cfo And Treasurer Scott J. Leffler (738.65K shares).
| Holder | Position | Shares | Report Date |
|---|---|---|---|
| Pincus & Co. Warburg | 34,102,952 | 05 Dec, 2025 | |
| Investment Xi Llc Gtcr | 22,735,301 | 05 Dec, 2025 | |
| Scott J. Leffler | Cfo And Treasurer | 738,649 | 04 Mar, 2022 |
| Michael B. Jr. Petras | Chairman & Ceo | 552,790 | 10 Dec, 2025 |
| Michael P Rutz | President Of Sterigenics | 450,204 | 26 Aug, 2025 |
| Alexander Dimitrief | Svp And General Counsel And Sec. | 334,725 | 04 Mar, 2025 |
| Jonathan M. Lyons | Sr. Vice President And Cfo | 189,602 | 07 Aug, 2025 |
| Ann R. Klee | 125,956 | 27 May, 2025 | |
| Vincent K Petrella | 80,781 | 27 May, 2025 | |
| Constantine S Mihas | 80,781 | 27 May, 2025 | |
| Sean Laurence Cunningham | 80,781 | 27 May, 2025 | |
| Ruoxi Chen | 80,781 | 27 May, 2025 | |
| James Neary | 80,781 | 27 May, 2025 | |
| David E. Wheadon | 74,912 | 27 May, 2025 | |
| David Donnini | 61,649 | 29 May, 2024 | |
| Robert Brown Knauss | 54,933 | 27 May, 2025 | |
| Karen Flynn | 39,221 | 27 May, 2025 | |
| Terry Hammons | Svp And Gc And Secretary | 31,257 | 04 Mar, 2022 |
| Stephanie Geveda | 25,848 | 31 May, 2022 | |
| Christopher Simon, | 19,132 | 27 May, 2025 |
* Please note that the shares above only reflect shares from the fund portfolio and the institutional portfolio. Shares from the personal portfolio are excluded from this Institutional Ownership Page. See these insiders' latest transactions here on Insider Page.
| Transaction Date | Insider Name | Security Class | Transaction Type | Shares Traded | Price | Shares Remaining | Ownership | Code |
|---|---|---|---|---|---|---|---|---|
| 08 Dec, 2025 | Michael B. Jr. Petras | Common Stock, $0.01 par value per share ("Common Stock") | D | 315,896 | $16.45 | 552,790 | D | S |
| 08 Dec, 2025 | Michael B. Jr. Petras | Common Stock | D | 394,861 | $16.45 | 4,819,393 | I | S |
| 08 Dec, 2025 | Michael B. Jr. Petras | Common Stock | D | 39,243 | $16.45 | 0 | I | S |
| 03 Dec, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 9,720,000 | $16.33 | 34,102,952 | I | S |
| 03 Dec, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 9,720,000 | $16.33 | 34,102,952 | I | S |
| 03 Dec, 2025 | Investment Xi Llc Gtcr | Common Stock, $0.01 par value per share ("Common Stock") | D | 6,480,000 | $16.33 | 22,735,301 | I | S |
| 10 Nov, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 18,000,000 | $15.65 | 43,822,952 | I | S |
| 10 Nov, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 18,000,000 | $15.65 | 43,822,952 | I | S |
| 10 Nov, 2025 | Investment Xi Llc Gtcr | Common Stock, $0.01 par value per share ("Common Stock") | D | 12,000,000 | $15.65 | 29,215,301 | I | S |
| 05 Sep, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 12,000,000 | $15.11 | 61,822,952 | I | S |
| 05 Sep, 2025 | Pincus & Co. Warburg | Common Stock, $0.01 par value per share ("Common Stock") | D | 12,000,000 | $15.11 | 61,822,952 | I | S |
| 05 Sep, 2025 | Investment Xi Llc Gtcr | Common Stock, $0.01 par value per share ("Common Stock") | D | 8,000,000 | $15.11 | 41,215,301 | I | S |
| 22 Aug, 2025 | Michael P Rutz | - | - | 450,204 | D | |||
| 22 Aug, 2025 | Michael P Rutz | Common Stock | D | 126,611 | $16.38 | 450,204 | D | S |
| 05 Aug, 2025 | Jonathan M. Lyons | - | - | 189,602 | D | |||
| 05 Aug, 2025 | Jonathan M. Lyons | Common Stock, $0.01 par value per share ("Common Stock") | D | 11,508 | $11.19 | 189,602 | D | F |
| 22 May, 2025 | Constantine S Mihas | Common Stock, $0.01 par value per share ("Common Stock") | A | 19,132 | $0.00 | 80,781 | D | A |
| 22 May, 2025 | Constantine S Mihas | - | - | 80,781 | D | |||
| 22 May, 2025 | Vincent K Petrella | Common Stock, $0.01 par value per share ("Common Stock") | A | 19,132 | $0.00 | 80,781 | D | A |
| 22 May, 2025 | James Neary | Common Stock, $0.01 par value per share ("Common Stock") | A | 19,132 | $0.00 | 80,781 | D | A |