Compass Minerals Intl Inc: shareholders and insiders
Price
$22.53
November 13, 2026Market cap $942M
What Ploutos Investor adds for Compass Minerals Intl
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- The full history: 17 fiscal years, from 2008
- The estimated fair value, with its range and its certainty
- The full analysis, 18 a month
- More questions to the chat on its filings
- Excel with every year
- An email when it reports, changes its dividend or an officer buys
Sign in with a free account to see the last 5 fiscal years.
Notes on these figures
- The latest annual figures the company filed are for 2025, more than a year ago. Newer ones may be late.
Insiders and their shares
Purchases and sales by officers and directors from Nov 15, 2025 to Oct 19, 2026, from their own Form 4 filings.
Bought on the market
–
nobody
Sold on the market
–
nobody
From Nov 15, 2025 to Nov 15, 2026, the days the chart shows. Change its range and the figures follow.
How the sales were made, as a share of their value
No sales in the period.
No trades under these filters.
From the Form 4s insiders file with the SEC within two business days of each trade.
Insiders and their shares
Every buy and sale by CMP's officers and directors from 2006 up to November 14, 2025, 20 more calendar years
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Major holders (over 5%)
Whoever comes to own more than 5% of a class of shares reports it to the SEC on Schedule 13D or 13G. Here is each holder's latest filing.
- BlackRock, Inc.Share of class6.10%
- State StreetShare of class5.50%
- M Partners Fund LPwith 2 more personsShare of class5.49%
- American Century ETF Trustwith 3 more personsShare of class5.40%
| Holder | Kind of stake | Share of class | Shares | Filed | Filing |
|---|---|---|---|---|---|
| BlackRock, Inc. | 6.10% | 2.53M | Apr 27, 20263 filings since Apr 28, 2025 | 13G/A | |
| State Street | 5.50% | 2.32M | May 12, 20263 filings since Nov 10, 2025 | 13G | |
| M Partners Fund LPwith 2 more persons | 5.49% | 2.29M | Nov 18, 2025 | 13G | |
| American Century ETF Trustwith 3 more persons | 5.40% | 2.27M | Aug 14, 2026 | 13G |
Fell to 5% or less (2)
Holders whose latest filing says they hold 5% or less. After it they need not file again, so what they hold today is not known.
From the Schedule 13D and 13G filed with the SEC since Dec 18, 2024, when they became structured data. A holder who has filed nothing since then is not shown here. A 13D is updated within two business days of any material change, a 13G up to 45 days after the quarter of the change, so the shares are those of the filing. The large managers also appear in the 13Fs.
Well-known managers
Which of the about 30 investment managers we track held the shares at the quarter end, and what they changed from the quarter before.
- AQR CapitalIn the quarter+822%
- Citadel Advisors (Griffin)In the quarter
- Millennium Mgmt (Englander)In the quarter+16%
- D.E. ShawIn the quarter+262%
- Renaissance TechnologiesIn the quarter
| Manager | Shares | In the quarter | Value | % of their portfolio |
|---|---|---|---|---|
| AQR Capital | 637.3K | +822% | $20M | 0.01% |
| Citadel Advisors (Griffin) | – | – | 0.00% | |
| Millennium Mgmt (Englander) | 164.3K | +16% | $5.1M | 0.00% |
| D.E. Shaw | 177.4K | +262% | $5.5M | 0.00% |
| Renaissance Technologies | – | – | 0.00% |
From the 13Fs managers file with the SEC up to 45 days after each quarter end. They show only long positions on that day, not short sales or what has changed since. No recent 13F: Pershing Square (Ackman), Scion (Burry).
Short interest
How many of the company's shares have been sold borrowed and not yet bought back, twice a month.
On Oct 15, 2026, 3.76% of its shares outstanding were held short, -6.3% since the report before.
- Shares held short
- 1.57M
- 3.76%
- Since the report before1.68M on Sep 30, 2026
- -6.3%
- 4.7
- 333.1K
- More days to cover thanof 4,578 US-listed companies with enough volume
- 57%
- Report date
- Oct 15, 2026
- Oct 31, 2023: Shares held short 1.73M
- Nov 15, 2023: Shares held short 1.76M
- Nov 30, 2023: Shares held short 1.66M
- Dec 15, 2023: Shares held short 1.64M
- Dec 29, 2023: Shares held short 1.87M
- Jan 12, 2024: Shares held short 2.23M
- Jan 31, 2024: Shares held short 2.58M
- Feb 15, 2024: Shares held short 3.06M
- Feb 29, 2024: Shares held short 2.88M
- Mar 15, 2024: Shares held short 2.71M
- Mar 28, 2024: Shares held short 3.16M
- Apr 15, 2024: Shares held short 3.48M
- Apr 30, 2024: Shares held short 3.54M
- May 15, 2024: Shares held short 3.97M
- May 31, 2024: Shares held short 4.30M
- Jun 14, 2024: Shares held short 4.63M
- Jun 28, 2024: Shares held short 4.58M
- Jul 15, 2024: Shares held short 4.94M
- Jul 31, 2024: Shares held short 4.97M
- Aug 15, 2024: Shares held short 5.25M
- Aug 30, 2024: Shares held short 6.69M
- Sep 13, 2024: Shares held short 6.46M
- Sep 30, 2024: Shares held short 3.43M
- Oct 15, 2024: Shares held short 3.39M
- Oct 31, 2024: Shares held short 3.12M
- Nov 15, 2024: Shares held short 3.09M
- Nov 29, 2024: Shares held short 2.40M
- Dec 13, 2024: Shares held short 1.98M
- Dec 31, 2024: Shares held short 2.02M
- Jan 15, 2025: Shares held short 2.20M
- Jan 31, 2025: Shares held short 2.00M
- Feb 14, 2025: Shares held short 2.06M
- Feb 28, 2025: Shares held short 2.07M
- Mar 14, 2025: Shares held short 2.30M
- Mar 31, 2025: Shares held short 2.56M
- Apr 15, 2025: Shares held short 2.87M
- Apr 30, 2025: Shares held short 2.99M
- May 15, 2025: Shares held short 2.35M
- May 30, 2025: Shares held short 2.71M
- Jun 13, 2025: Shares held short 2.76M
- Jun 30, 2025: Shares held short 2.44M
- Jul 15, 2025: Shares held short 2.05M
- Jul 31, 2025: Shares held short 1.98M
- Aug 15, 2025: Shares held short 1.82M
- Aug 29, 2025: Shares held short 1.93M
- Sep 15, 2025: Shares held short 1.75M
- Sep 30, 2025: Shares held short 1.90M
- Oct 15, 2025: Shares held short 2.19M
- Oct 31, 2025: Shares held short 2.12M
- Nov 14, 2025: Shares held short 2.08M
- Nov 28, 2025: Shares held short 2.27M
- Dec 15, 2025: Shares held short 2.51M
- Dec 31, 2025: Shares held short 1.85M
- Jan 15, 2026: Shares held short 1.70M
- Jan 30, 2026: Shares held short 1.80M
- Feb 13, 2026: Shares held short 2.15M
- Feb 27, 2026: Shares held short 2.00M
- Mar 13, 2026: Shares held short 2.43M
- Mar 31, 2026: Shares held short 2.32M
- Apr 15, 2026: Shares held short 1.86M
- Apr 30, 2026: Shares held short 1.64M
- May 15, 2026: Shares held short 1.16M
- May 29, 2026: Shares held short 1.14M
- Jun 15, 2026: Shares held short 975.9K
- Jun 30, 2026: Shares held short 1.27M
- Jul 15, 2026: Shares held short 1.34M
- Jul 31, 2026: Shares held short 1.50M
- Aug 14, 2026: Shares held short 1.83M
- Aug 31, 2026: Shares held short 2.12M
- Sep 15, 2026: Shares held short 2.07M
- Sep 30, 2026: Shares held short 1.68M
- Oct 15, 2026: Shares held short 1.57M
As brokers report them to the regulator twice a month, mid-month and at month end, published about eight business days later. A short position is shares sold borrowed and not yet bought back. The share count is the one the company's market value is figured on, from its filings. Days to cover is the shares held short over the average daily volume of the weeks between two reports.
Short sales in daily trading49.0% of the shares in the last 14 sessions' reported trades were short sales.
In the last 14 sessions, 49.0% of the shares in the reported trades were short sales, against 56.6% in the 14 before.
- Last 14 sessionsOct 27, 2026 – Nov 13, 2026
- 49.0%
- The 14 beforeOct 7, 2026 – Oct 26, 2026
- 56.6%
- Change
- -7.6 pts
- Short sales a dayon average, of 116.3K shares
- 57.0K
- More than atof 3,649 US-listed companies, same days
- 46%
- Median of alleight in ten from 34.6% to 63.4%
- 50.1%
- Oct 7, 2026: Short sales 68.3%
- Oct 8, 2026: Short sales 55%
- Oct 9, 2026: Short sales 63.6%
- Oct 12, 2026: Short sales 67.4%
- Oct 13, 2026: Short sales 45.8%
- Oct 14, 2026: Short sales 58.1%
- Oct 15, 2026: Short sales 62.4%
- Oct 16, 2026: Short sales 61.3%
- Oct 19, 2026: Short sales 58.1%
- Oct 20, 2026: Short sales 44%
- Oct 21, 2026: Short sales 44.1%
- Oct 22, 2026: Short sales 47.8%
- Oct 23, 2026: Short sales 59.6%
- Oct 26, 2026: Short sales 62.1%
- Oct 27, 2026: Short sales 30.5%
- Oct 28, 2026: Short sales 44.9%
- Oct 29, 2026: Short sales 52.5%
- Oct 30, 2026: Short sales 28.7%
- Nov 2, 2026: Short sales 43.1%
- Nov 3, 2026: Short sales 46.5%
- Nov 4, 2026: Short sales 57.5%
- Nov 5, 2026: Short sales 71.1%
- Nov 6, 2026: Short sales 54.8%
- Nov 9, 2026: Short sales 58.3%
- Nov 10, 2026: Short sales 50.4%
- Nov 11, 2026: Short sales 68%
- Nov 12, 2026: Short sales 60.7%
- Nov 13, 2026: Short sales 62.5%
This is not the number of shares sold short today: it measures short sales within each day's trading, and only trades made off the exchanges. Much of it is market makers, who sell shares they do not have to fill buyers' orders and cover soon after, so for a heavily traded stock the share is often around half.
What the insiders hold
The shares each insider reports holding after their latest trade (Form 4), for those who traded on the market in the last three years.
- Joseph E ReeceDirectorDirectly97.4K
- Richard P DealyDirectorDirectly47.1K
- Benjamin S. NicholsChief Commercial OfficerDirectly21.2K
- Ashley WardChief Accounting OfficerDirectly9,583
- David SafranDirectorDirectly7,413
- Amy TillsChief Human Resources OfficerDirectly5,156
- Edward C DowlingPresident and CEODirectly4,882
- Brandon RisnerChief Operating OfficerDirectly3,780
| Person | Directly | Indirectly | After the trade of | Filing |
|---|---|---|---|---|
| Joseph E ReeceDirector | 97.4K | 21.0K | Sep 30, 2026 | Form 4 |
| Richard P DealyDirector | 47.1K | – | Sep 30, 2026 | Form 4 |
| Benjamin S. NicholsChief Commercial Officer | 21.2K | – | Oct 15, 2026 | Form 4 |
| Ashley WardChief Accounting Officer | 9,583 | – | Oct 15, 2026 | Form 4 |
| David SafranDirector | 7,413 | – | Oct 9, 2026 | Form 4 |
| Amy TillsChief Human Resources Officer | 5,156 | – | Sep 11, 2026 | Form 4 |
| Edward C DowlingPresident and CEO | 4,882 | – | Oct 15, 2026 | Form 4 |
| Brandon RisnerChief Operating Officer | 3,780 | – | Oct 15, 2026 | Form 4 |
A lower bound: it counts only the 8 officers and directors with a market trade since Nov 16, 2023. Anyone who neither bought nor sold since is not here, whatever they hold. The share is against the share count on the latest 10-K's cover.
Institutional investors by quarter
Every manager that reports positions to the SEC (Form 13F), quarter by quarter: how many hold the stock, how many shares and dollars between them, and who entered, left, added or trimmed during the quarter.
- Q3 2025: Managers 200
- Q4 2025: Managers 195
- Q1 2026: Managers 207
- Q2 2026: Managers 233
Institutional investors by quarter
The fund managers holding CMP, quarter by quarter, from Q1 2013 to Q2 2025, 50 more quarters
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Q2 2026: 233 managers held 38.88M shares, worth $1.2B. During the quarter 59 opened a position, 33 closed one, 69 added and 57 trimmed.
The largest holders, Q2 2026
- KochIn the quarter
- SailingStone Capital PartnersIn the quarter-31%
- BlackRockIn the quarter+7.9%
- State StreetIn the quarter+5.1%
- American Century CompaniesIn the quarter+35%
- Vanguard Capital ManagementIn the quarter+1.5%
- Irenic Capital ManagementIn the quarter-26%
- Dimensional Fund AdvisorsIn the quarter+4.1%
- Jacobs Levy Equity ManagementIn the quarter
- Gumshoe Capital ManagementIn the quarter-31%
| Manager | Shares | In the quarter | Value |
|---|---|---|---|
| Koch | 7.03M | $219M | |
| SailingStone Capital Partners | 3.35M | -31% | $104M |
| BlackRock | 3.08M | +7.9% | $96M |
| State Street | 2.44M | +5.1% | $76M |
| American Century Companies | 2.27M | +35% | $71M |
| Vanguard Capital Management | 1.78M | +1.5% | $55M |
| Irenic Capital Management | 1.07M | -26% | $33M |
| Dimensional Fund Advisors | 951.2K | +4.1% | $30M |
| Jacobs Levy Equity Management | 886.0K | $28M | |
| Gumshoe Capital Management | 872.3K | -31% | $27M |
From the SEC's Form 13F data sets, Q3 2025 to Q2 2026: the long positions of every manager with more than $100 million under management, as filed up to 45 days after each quarter end. Short positions and options are not in them. Shares as reported each quarter, not adjusted for splits. The stock is matched by its CUSIP, through the SEC's fails-to-deliver files.
Pay against performance, the say-on-pay vote, buybacks by quarter and trading plans are read for S&P 500 companies only.
The full analysis
What do Compass Minerals Intl's filings show?
Who buys and sells is one part of Compass Minerals Intl's picture. The full Ploutos AI analysis reads everything the company has filed and shows what stands behind it, with a source for every figure.
- A fair value range built from the filings
- Earnings quality, debt and red flags
- Insider and institutional moves
- The case for and the case against
Have CMP's insiders bought or sold?
From Jun 26, 2026 to Oct 19, 2026 Compass Minerals Intl's insiders reported no purchase or sale of shares on the market.
Which well-known managers hold CMP?
5 of the managers we track held the shares on Sep 30, 2026. The largest position was AQR Capital's, worth $20M.
Is every insider transaction a purchase or a sale?
No. Many are part of their pay: share awards, option exercises and shares the company keeps for the tax. Only code P is a purchase with their own money, and code S a sale on the market.
Related pages
The other pages on US stocks, free to read. On the company pages, the last three fiscal years are open to everyone, five with a free account, and every year with Ploutos Investor.
The figures come from the company's SEC filings and the share price, and describe what it has reported. They are not a score or a fair value.