Sotera Health Co — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Petras Michael B. Jr. | Chairman & CEO | Sale | 39,243 | $16.45 | $645,547 | — | Dec 8, 2025 |
| WARBURG PINCUS LLC | — | Sale | 9,720,000 | $16.33 | $158,727,600 | 34,102,952 | Dec 3, 2025 |
| Warburg Pincus Partners GP LLC | — | Sale | 9,720,000 | $16.33 | $158,727,600 | 34,102,952 | Dec 3, 2025 |
| GTCR FUND XI/A LP | — | Sale | 6,480,000 | $16.33 | $105,818,400 | 22,735,301 | Dec 3, 2025 |
| GTCR FUND XI/A LP | — | Sale | 12,000,000 | $15.65 | $187,800,000 | 29,215,301 | Nov 10, 2025 |
| Warburg Pincus Private Equity XI-C, L.P. | — | Sale | 18,000,000 | $15.65 | $281,700,000 | 43,822,952 | Nov 10, 2025 |
| Warburg Pincus Partners II, L.P. | — | Sale | 18,000,000 | $15.65 | $281,700,000 | 43,822,952 | Nov 10, 2025 |
| Warburg Pincus XI-C, LLC | — | Sale | 12,000,000 | $15.11 | $181,320,000 | 61,822,952 | Sep 5, 2025 |
| WARBURG PINCUS & CO. | — | Sale | 12,000,000 | $15.11 | $181,320,000 | 61,822,952 | Sep 5, 2025 |
| GTCR INVESTMENT XI LLC | — | Sale | 8,000,000 | $15.11 | $120,880,000 | 41,215,301 | Sep 5, 2025 |
| Rutz Michael P | President of Sterigenics | Sale | 126,611 | $16.38 | $2,073,888 | 450,204 | Aug 22, 2025 |
| Lyons Jonathan M. | Sr. Vice President, CFO | Tax Withholding | 11,508 | $11.19 | $128,775 | 189,602 | Aug 5, 2025 |
| Flynn Karen | — | Award / Grant | 19,132 | — | — | 39,221 | May 22, 2025 |
| Knauss Robert Brown | — | Award / Grant | 19,132 | — | — | 54,933 | May 22, 2025 |
| Wheadon David E. | — | Award / Grant | 19,132 | — | — | 74,912 | May 22, 2025 |
| PETRELLA VINCENT K | — | Award / Grant | 19,132 | — | — | 80,781 | May 22, 2025 |
| Neary James | — | Award / Grant | 19,132 | — | — | 80,781 | May 22, 2025 |
| MIHAS CONSTANTINE S | — | Award / Grant | 19,132 | — | — | 80,781 | May 22, 2025 |
| Klee Ann R. | — | Award / Grant | 19,132 | — | — | 125,956 | May 22, 2025 |
| CUNNINGHAM SEAN LAURENCE | — | Award / Grant | 19,132 | — | — | 80,781 | May 22, 2025 |
| Chen Ruoxi | — | Award / Grant | 19,132 | — | — | 80,781 | May 22, 2025 |
| Simon, Christopher | — | Award / Grant | 19,132 | — | — | 19,132 | May 22, 2025 |
| Petras Michael B. Jr. | Chairman & CEO | Tax Withholding | 27,990 | $12.47 | $349,035 | 642,509 | Mar 3, 2025 |
| Rutz Michael P | President of Sterigenics | Award / Grant | 48,579 | — | — | 576,815 | Mar 2, 2025 |
| Lyons Jonathan M. | Sr. Vice President, CFO | Award / Grant | 37,369 | — | — | 201,110 | Mar 2, 2025 |
| DIMITRIEF ALEXANDER | SVP, General Counsel and Sec. | Award / Grant | 56,053 | — | — | 334,725 | Mar 2, 2025 |
| Petras Michael B. Jr. | Chairman & CEO | Gift | 39,243 | — | — | 5,214,337 | Nov 20, 2024 |
| Rutz Michael P | President of Sterigenics | Tax Withholding | 2,889 | $13.21 | $38,164 | 541,520 | Nov 20, 2024 |
| Petras Michael B. Jr. | Chairman & CEO | Gift | 200,000 | — | — | 5,253,580 | Sep 10, 2024 |
| Warburg Pincus Private Equity XI-C, L.P. | — | Sale | 15,000,000 | $15.03 | $225,450,000 | 73,822,952 | Sep 6, 2024 |
| Bull Holdco L.P. | — | Sale | 15,000,000 | $15.03 | $225,450,000 | 73,822,952 | Sep 6, 2024 |
| GTCR PARTNERS XI/A&C LP | — | Sale | 10,000,000 | $15.03 | $150,300,000 | 49,215,301 | Sep 6, 2024 |
| Lyons Jonathan M. | Sr. Vice President, CFO | Tax Withholding | 7,659 | $14.22 | $108,911 | 110,432 | Aug 5, 2024 |
| Flynn Karen | — | Award / Grant | 20,089 | — | — | 20,089 | May 24, 2024 |
| Knauss Robert Brown | — | Award / Grant | 20,089 | — | — | 35,801 | May 24, 2024 |
| Wheadon David E. | — | Award / Grant | 20,089 | — | — | 55,780 | May 24, 2024 |
| PETRELLA VINCENT K | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| Neary James | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| MIHAS CONSTANTINE S | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| Klee Ann R. | — | Award / Grant | 20,089 | — | — | 106,824 | May 24, 2024 |
| Donnini David | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| CUNNINGHAM SEAN LAURENCE | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| Chen Ruoxi | — | Award / Grant | 20,089 | — | — | 61,649 | May 24, 2024 |
| WARBURG PINCUS & CO. | — | Sale | 16,594,363 | $14.31 | $237,465,335 | 88,822,952 | Mar 4, 2024 |
| WP Global LLC | — | Sale | 16,594,363 | $14.31 | $237,465,335 | 88,822,952 | Mar 4, 2024 |
| GTCR PARTNERS XI/A&C LP | — | Sale | 11,062,908 | $14.31 | $158,310,213 | 59,215,301 | Mar 4, 2024 |
| Lyons Jonathan M. | Sr. Vice President, CFO | Award / Grant | 41,124 | — | — | 118,091 | Mar 4, 2024 |
| DIMITRIEF ALEXANDER | SVP, General Counsel and Sec. | Award / Grant | 51,405 | — | — | 286,883 | Mar 4, 2024 |
| Klee Ann R. | — | Sale | 5,750 | $14.31 | $82,283 | 86,735 | Mar 4, 2024 |
| Rutz Michael P | President of Sterigenics | Sale | 83,109 | $14.31 | $1,189,290 | 544,409 | Mar 4, 2024 |