Sotera Health Co
Ownership
Ownership Structure
Who owns Sotera Health Co (SHC)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 64.9% of the shares are freely tradable; institutional investors hold 90.3%.
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Darsana Capital Partners LP | 9.46 | 27,000,000 | +3.8 | 06/30/2026 |
| Sessa Capital, L.P | 8.08 | 23,050,000 | +12.2 | 03/31/2026 |
| OZ Management LLC | 7.61 | 21,717,728 | +3.4 | 03/31/2026 |
| BlackRock Inc | 7.31 | 20,849,579 | +15.3 | 03/31/2026 |
| Sachem Head Capital Management LP | 5.45 | 15,560,000 | +33.6 | 06/30/2026 |
| Vanguard Capital Management, LLC | 3.76 | 10,735,006 | +0.0 | 03/31/2026 |
| Vanguard Portfolio Management, LLC | 3.72 | 10,608,717 | +0.0 | 03/31/2026 |
| HHG PLC | 3.21 | 9,162,191 | +35.3 | 03/31/2026 |
| T. Rowe Price Investment Management,Inc. | 3.20 | 9,125,621 | -13.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| iShares Core S&P Mid-Cap ETF | 3.25 | 9,288,017 | +0.0 | 08/31/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider holdings
| Person | Role | Shares | Value | As of | Type |
|---|---|---|---|---|---|
| Petras Michael B. Jr. | Executive Chairman | 4,367,305 | 82,978,795 $ | Aug 17, 2026 | both |
| Rutz Michael P | President of Sterigenics | 334,279 | 6,351,301 $ | Aug 7, 2026 | direct |
| Lyons Jonathan M. | Sr. Vice President, CFO | 217,304 | 4,128,776 $ | Aug 5, 2026 | direct |
Holdings as of each person's most recent SEC Form 4 filing — excluding options and RSUs, which are not shares yet. Holdings may have changed between two filings.
Insiders
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| Aug 17, 2026 | Petras Michael B. Jr. | Executive Chairman | Sell | 850,000 | 18.50 | 15,725,935 |
| Aug 17, 2026 | Petras Michael B. Jr. | Executive Chairman | Sell | 294,515 | 18.50 | 5,448,851 |
| Aug 7, 2026 | Rutz Michael P | President of Sterigenics | Sell | 150,000 | 18.84 | 2,825,250 |
| Aug 5, 2026 | Lyons Jonathan M. | Sr. Vice President, CFO | Other | 11,316 | 17.98 | 203,462 |
Reportable transactions by officers and major shareholders from SEC Form 4 filings. "Other" includes things like stock grants and option exercises without a buy/sell character. View all insider transactions →
Data as of: September 17, 2026 · Source: fundamental data & SEC filings (annual and quarterly reports, 10-K/10-Q)
Note: pure fact-based analysis, not investment advice and not a solicitation to buy or sell. All figures without guarantee.