Compass Minerals (CMP)
Supplies deicing salt, industrial salt, and sulfate of potash products.
$23.29
vs last close−0.51 (−2.14%)
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13F · 13D/G · Form 4
| Institutions | ≈ 93.90% | 39.40M shares | |
|---|---|---|---|
| 239 holders · as of Jun 30, 2026 · largest filers plus last quarter's tail | |||
| Insiders | 4.95% | 2.08M shares | |
| 19 holders · as of Sep 15, 2026 | |||
| Other | ≈ 1.15% | 479.4K shares | |
| remainder | |||
41.96M company shares as of Sep 23, 2026 · institutions as of Jun 30, 2026 · holders as of their latest filing
This quarter's institutional total failed a plausibility check; shown: the largest filers plus last quarter's remainder.
13F, as of Jun 30, 2026
239 holders · 39.40M shares · 60 new positions · 133 increased · 59 reduced · 29 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 |
13D/G · 5% or more, as filed
| Holder | % of class | Shares | Form | Filed |
|---|---|---|---|---|
| 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 |
Form 4
Latest trades
No open-market trades in the last 12 months.
House and Senate disclosures
| Member | Type | Amount | Owner | Traded | Disclosed |
|---|---|---|---|---|---|
| Rep. Gilbert Cisneros · CA31 | Purchase | $1,001 – $15,000 | Jul 16, 2026 | Sep 7, 2026 |