As of April 22, 2026, the three largest insider holders of SHC 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 |
| Investment Xi Llc Gtcr | - | 0 | 12,735,301 | 10 Mar, 2026 |
| Michael B. Jr. Petras | Chairman Ceo | 0 | 5,253,580 | 22 Nov, 2024 |
| Michael B. Jr. Petras | Chairman Ceo | 0 | 4,819,393 | 10 Dec, 2025 |
| Scott J. Leffler | Cfo And Treasurer | 738,649 | 0 | 04 Mar, 2022 |
| Michael B. Jr. Petras | Chairman Ceo | 692,427 | 0 | 04 Mar, 2026 |
| Michael B. Jr. Petras | Chairman Ceo | 521,451 | 0 | 04 Mar, 2026 |
| Michael P Rutz | President Of Sterigenics | 484,279 | 0 | 04 Mar, 2026 |
| Michael P Rutz | President Of Sterigenics | 446,475 | 0 | 04 Mar, 2026 |
| Alexander Dimitrief | Svp, General Counsel And Sec. | 319,981 | 0 | 04 Mar, 2026 |
| Alexander Dimitrief | Former Svp, Gc And Sec. | 312,040 | 0 | 02 Apr, 2026 |
| Jonathan M. Lyons | Sr. Vice President, Cfo | 228,620 | 0 | 04 Mar, 2026 |
| Jonathan M. Lyons | Sr. Vice President, Cfo | 183,556 | 0 | 04 Mar, 2026 |
| Ann R. Klee | - | 125,956 | 0 | 27 May, 2025 |
| Vincent K Petrella | - | 80,781 | 0 | 27 May, 2025 |
| Sean Laurence Cunningham | - | 80,781 | 0 | 27 May, 2025 |
| Ruoxi Chen | - | 80,781 | 0 | 27 May, 2025 |
| Constantine S Mihas | - | 80,781 | 0 | 27 May, 2025 |
| James Neary | - | 80,781 | 0 | 27 May, 2025 |
| David E. Wheadon | - | 74,912 | 0 | 27 May, 2025 |
| David Donnini | - | 61,649 | 0 | 29 May, 2024 |
| Robert Brown Knauss | - | 54,933 | 0 | 27 May, 2025 |
| Karen Flynn | - | 39,221 | 0 | 27 May, 2025 |
| Terry Hammons | Svp, Gc And Secretary | 31,257 | 0 | 04 Mar, 2022 |
| Stephanie Geveda | - | 25,848 | 0 | 31 May, 2022 |
| Christopher Simon, | - | 19,132 | 0 | 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 |
|---|---|---|---|---|---|---|---|---|
| 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 | 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 |
| 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 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 | 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 P Rutz | Common Stock, $0.01 par value per share (Common Stock) | D | 3,729 | $15.91 | 446,475 | D | F |
| 02 Mar, 2026 | Alexander Dimitrief | Common Stock | A | 16,816 | - | 343,600 | D | M |
| 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 | 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 | Jonathan M. Lyons | Common Stock | D | 23,988 | $15.91 | 177,505 | D | F |
| 02 Mar, 2026 | Michael P Rutz | Common Stock | A | 14,573 | - | 456,553 | 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 |
| 02 Mar, 2026 | Alexander Dimitrief | Performance RSUs | D | 16,816 | - | 11,210 | D | M |
| 02 Mar, 2026 | Jonathan M. Lyons | Common Stock | D | 8,240 | $15.91 | 169,265 | D | F |