Sotera Health's top three insider shareholders as of June 06, 2026 are Pincus Co. Warburg (Director, 19.10Mn shares), Investment Xi Llc Gtcr (Director, 12.74Mn shares), Michael B. Jr. Petras (Chairman Ceo, 5.25Mn shares).
| Holder | Position | Shares (Direct) | Shares (Indirect) | Report Date |
|---|---|---|---|---|
| Pincus Co. Warburg | - | 0 | 19,102,952 | 10 Mar, 2026 |
| Constantine S Mihas | - | 80,781 | 0 | 27 May, 2025 |
| Vincent K Petrella | - | 80,781 | 0 | 27 May, 2025 |
| David Donnini | - | 61,649 | 0 | 29 May, 2024 |
| James Neary | - | 80,781 | 0 | 27 May, 2025 |
| Karen Flynn | - | 39,221 | 0 | 27 May, 2025 |
| Michael P Rutz | President Of Sterigenics | 484,279 | 0 | 04 Mar, 2026 |
| Alexander Dimitrief | Svp, General Counsel And Sec. | 319,981 | 0 | 04 Mar, 2026 |
| Stephanie Geveda | - | 25,848 | 0 | 31 May, 2022 |
| Christopher Simon, | - | 19,132 | 0 | 27 May, 2025 |
| Ruoxi Chen | - | 80,781 | 0 | 27 May, 2025 |
| David E. Wheadon | - | 74,912 | 0 | 27 May, 2025 |
| Ann R. Klee | - | 125,956 | 0 | 27 May, 2025 |
| Terry Hammons | Svp, Gc And Secretary | 31,257 | 0 | 04 Mar, 2022 |
| Investment Xi Llc Gtcr | - | 0 | 12,735,301 | 10 Mar, 2026 |
| Sean Laurence Cunningham | - | 80,781 | 0 | 27 May, 2025 |
| Michael B. Jr. Petras | Chairman Ceo | 0 | 5,253,580 | 22 Nov, 2024 |
| Scott J. Leffler | Cfo And Treasurer | 738,649 | 0 | 04 Mar, 2022 |
| Robert Brown Knauss | - | 54,933 | 0 | 27 May, 2025 |
| Jonathan M. Lyons | Sr. Vice President, Cfo | 228,620 | 0 | 04 Mar, 2026 |
* 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 |
|---|---|---|---|---|---|---|---|---|
| 31 Mar, 2026 | Alexander Dimitrief | Common Stock, $0.01 par value per share (Common Stock) | D | 7,941 | $14.34 | 312,040 | D | F |
| 06 Mar, 2026 | Pincus Co. Warburg | Common Stock, $0.01 par value per share (Common Stock) | D | 15,000,000 | $15.27 | 19,102,952 | I | S |
| 06 Mar, 2026 | Investment Xi Llc Gtcr | Common Stock, $0.01 par value per share (Common Stock) | D | 10,000,000 | $15.27 | 12,735,301 | I | S |
| 06 Mar, 2026 | Investment Xi Llc Gtcr | Common Stock, $0.01 par value per share (Common Stock) | D | 10,000,000 | $15.27 | 12,735,301 | I | S |
| 06 Mar, 2026 | Pincus Co. Warburg | Common Stock, $0.01 par value per share (Common Stock) | D | 15,000,000 | $15.27 | 19,102,952 | I | S |
| 02 Mar, 2026 | Michael P Rutz | Common Stock, $0.01 par value per share (Common Stock) | D | 3,729 | $15.91 | 446,475 | D | F |
| 02 Mar, 2026 | Jonathan M. Lyons | Common Stock, $0.01 par value per share (Common Stock) | D | 6,046 | $15.91 | 183,556 | D | F |
| 02 Mar, 2026 | Michael B. Jr. Petras | Common Stock, $0.01 par value per share (Common Stock) | D | 31,339 | $15.91 | 521,451 | D | F |
| 02 Mar, 2026 | Alexander Dimitrief | Common Stock, $0.01 par value per share (Common Stock) | D | 7,941 | $15.91 | 326,784 | D | F |
| 02 Mar, 2026 | Michael P Rutz | Common Stock | D | 4,495 | $15.91 | 441,980 | D | F |
| 02 Mar, 2026 | Jonathan M. Lyons | Common Stock | A | 17,937 | - | 201,493 | D | M |
| 02 Mar, 2026 | Alexander Dimitrief | Common Stock | A | 16,816 | - | 343,600 | D | M |
| 02 Mar, 2026 | Michael B. Jr. Petras | Common Stock | D | 40,302 | $15.91 | 481,149 | D | F |
| 02 Mar, 2026 | Michael B. Jr. Petras | Common Stock | A | 89,686 | - | 570,835 | D | M |
| 02 Mar, 2026 | Alexander Dimitrief | Common Stock | D | 23,619 | $15.91 | 319,981 | D | F |
| 02 Mar, 2026 | Michael P Rutz | Common Stock | A | 14,573 | - | 456,553 | D | M |
| 02 Mar, 2026 | Jonathan M. Lyons | Common Stock | D | 23,988 | $15.91 | 177,505 | D | F |
| 02 Mar, 2026 | Alexander Dimitrief | Performance RSUs | D | 16,816 | - | 11,210 | D | M |
| 02 Mar, 2026 | Michael B. Jr. Petras | Common Stock | D | 39,552 | $15.91 | 531,283 | D | F |
| 02 Mar, 2026 | Michael P Rutz | Common Stock | D | 17,497 | $15.91 | 439,056 | D | F |