Compass Minerals International Inc (CMP)
Who owns Compass Minerals International Inc (CMP)? This page shows the largest institutions and funds, the ownership structure and the latest insider transactions. 93.7% of the shares are freely tradable; institutional investors hold 82.4%.
Ownership Structure
Largest Shareholders
Institutions
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Koch, Inc | 16.77 | 7,034,609 | +0.0 | 03/31/2026 |
| SailingStone Capital Partners LLC | 11.50 | 4,825,611 | -10.9 | 03/31/2026 |
| BlackRock Inc | 6.80 | 2,852,763 | -28.4 | 03/31/2026 |
| Vanguard Group Inc | 6.57 | 2,757,733 | -0.6 | 12/31/2025 |
| State Street Corp | 5.54 | 2,322,476 | +13.3 | 03/31/2026 |
| Ewing Morris & Co Investment Partners Ltd | 4.80 | 2,014,327 | +20.0 | 03/31/2026 |
| Vanguard Capital Management, LLC | 4.17 | 1,748,555 | +0.0 | 03/31/2026 |
| American Century Companies Inc | 4.00 | 1,678,675 | +20.4 | 03/31/2026 |
Funds
| Name | Stake (%) | Shares | Change (%) | Date |
|---|---|---|---|---|
| Victory Global Energy Transition A | 6.30 | 2,643,505 | -14.4 | 03/31/2026 |
| Avantis US Small Cap Value ETF | 4.02 | 1,686,068 | +0.1 | 05/30/2026 |
Largest reported positions according to regulatory filings; stake as a percentage of shares outstanding, change versus the previous filing. Source: fundamentals data.
Insider Transactions
| Date | Person | Role | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| 28. Jul 2026 | Ward Ashley | Chief Accounting Officer | Other | 2,443 | 29.69 | 72,533 |
| 28. Jul 2026 | Ward Ashley | Chief Accounting Officer | Other | 8,333 | 0.00 | – |
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: July 31, 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.