Compass Minerals
Supplies deicing salt, industrial salt, and sulfate of potash products.
$24.62
After-hours close−0.02 (−0.06%)
At close$24.64(−1.22%)
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Breakdown13F · Form 4
Institutions 97.04%40.72M sharesInsiders 0.75%316.4K sharesOther 2.21%923.5K shares
Shares outstanding 41.96M · Float 32.18M · 76.7% free float
Institutions13F, as of Jun 30, 2026
238 holders · 40.72M shares · 62 new positions · 135 increased · 57 reduced · 30 closed
| Holder | Shares | % outstanding | Chg q/q | Filed |
|---|---|---|---|---|
| Koch, Inc. | 7.03M | 16.77% | 0 | Aug 13, 2026 |
| Sailingstone Capital Partners LLC | 3.35M | 7.99% | −1.47M | Aug 14, 2026 |
| BlackRock, Inc. | 3.08M | 7.34% | +225.7K | Aug 7, 2026 |
| State Street Corp | 2.44M | 5.82% | +119.4K | Aug 7, 2026 |
| American Century Companies Inc | 2.27M | 5.42% | +594.9K | Aug 12, 2026 |
| Vanguard Capital Management LLC | 1.78M | 4.23% | +27.0K | Aug 13, 2026 |
| Irenic Capital Management LP | 1.07M | 2.55% | −367.2K | Aug 14, 2026 |
| Dimensional Fund Advisors LP | 951.2K | 2.27% | +37.5K | Aug 11, 2026 |
Beneficial owners13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| SailingStone Capital Partners LLCincl. Kenneth L. Settles Jr., MacKenzie B. Davis +1 more | 11.55% | 4.77M | 13G/A | Sep 19, 2024 ↗ |
| BlackRock, Inc. | 6.10% | 2.53M | 13G | Apr 27, 2026 ↗ |
| State Street Corporation | 5.50% | 2.32M | 13G | May 12, 2026 ↗ |
| M Partners Fund LP | 5.49% | 2.29M | 13G | Nov 18, 2025 ↗ |
| American Century Companies, Inc.incl. American Century ETF Trust, Stowers Institute for Medical Research +1 more | 5.40% | 2.27M | 13G | Aug 14, 2026 ↗ |
InsidersForm 4
| Insider | Role | Shares | % outstanding | Filed |
|---|---|---|---|---|
| Joseph E. Reece | director | 116.7K | 0.28% | Jul 1, 2026 |
| Lori A. Walker | director | 67.7K | 0.16% | Mar 9, 2026 |
| Richard P. Dealy | director | 45.8K | 0.11% | Jul 1, 2026 |
| Melissa M. Miller | director | 43.2K | 0.10% | Mar 9, 2026 |
| Gareth T. Joyce | director | 43.1K | 0.10% | Mar 9, 2026 |
2 ten-percent owners hold 111.9K shares by Form 4, outside the officers-and-directors figure above · 42 people have not refiled in the last 18 months (15.68M shares), so they are not in the figure above
Latest trades
No open-market trades in the last 12 months.
CongressHouse and Senate disclosures
Not reported.