| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Rutz Michael P | President of Sterigenics | C/O SOTERA HEALTH COMPANY, 9100 SOUTH HILLS BLVD, SUITE 300, BROADVIEW HEIGHTS | Matthew J. Klaben, Attorney-in-Fact | 2025-08-26 | 0001599220 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | SHC | Common Stock | Sale | -$2.07M | -127K | -21.95% | $16.38 | 450K | Aug 22, 2025 | Direct | F1, F2 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| holding | SHC | Stock Options | 68.1K | Aug 22, 2025 | Common Stock | 68.1K | $14.59 | Direct | F3, F4 | |||||
| holding | SHC | Stock Options | 53.9K | Aug 22, 2025 | Common Stock | 53.9K | $17.59 | Direct | F3, F5 | |||||
| holding | SHC | Stock Options | 63.9K | Aug 22, 2025 | Common Stock | 63.9K | $20.03 | Direct | F3, F6 | |||||
| holding | SHC | Stock Options | 112K | Aug 22, 2025 | Common Stock | 112K | $23.00 | Direct | F3, F7 | |||||
| holding | SHC | Performance RSUs | 24.3K | Aug 22, 2025 | Common Stock | 24.3K | Direct | F8 |
| Id | Content |
|---|---|
| F1 | Price reported constitutes the average weighted price of shares sold. Shares were sold at varying prices in the range of $16.30 - $16.54. The reporting person hereby undertakes, upon request by the Commission staff, the issuer or a security holder of the issuer, to provide full information regarding the number of shares sold at each separate price. |
| F2 | These securities consist of 80,901 RSUs and 369,303 shares of Common Stock. |
| F3 | No transaction is being reported on this line. Reported on a previously filed Form 4. |
| F4 | These options were granted on March 4, 2024, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest annually in three equal installments commencing March 2, 2025, subject to vesting conditions. |
| F5 | These options were granted on March 6, 2023, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest in annually in three equal installments commencing March 2, 2024, subject to the Reporting Person's continued service through each such date.. |
| F6 | These options were granted on March 2, 2022, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest in three equal installments on each of the first three anniversaries of the date of grant, subject to the Reporting Person's continued service thourgh each such date. |
| F7 | These options were granted on November 20, 2020, pursuant to the terms of a stock option agreement under the 2020 Incentive Plan. The options vest in four equal installments on each of the first four anniversaries of the date of grant, subject to the Reporting Person's continued service through each such date. |
| F8 | These securities consist of a maximum number of additional performance-based RSUs that were granted on March 3, 2025, pursuant to the terms of an RSU agreement under the 2020 Incentive Plan. Each additional RSU represents the Reporting Person's right to receive one share of Common Stock, subject to stock price-related performance conditions. The additional RSUs generally vest annually in 60%, 20%, and 20% installments, respectively, commencing March 3, 2026, subject to performance. |
The Power of Attorney for Mr. Rutz is filed as an exhibit to the Form 3 filed on November 20, 2020, which is hereby incorporated by reference.