NYSE · CIK 0001227654
CMP COMPASS MINERALS INTERNATIONAL INC
Insider trading from SEC Form 4. Last filing 12 d ago. Close $22.79 on Oct 9, 2026, +38% from the 52-week low and -32% from the high.
COMPASS MINERALS INTERNATIONAL INC (CMP) has 83 SEC Form 4 filings on file from 14 insiders, the latest filed on Oct 1, 2026. No insider bought or sold on the open market in the last 90 days; rows filed in that time are grants, exercises, tax withholding and other transactions that carry no view on the price.
1 open-market trade has been scored at CMP. The newest: Joseph E Reece (director) bought $48k of stock on Mar 26, 2025, filed Mar 27, 2025, scored 28 (weak).
CMP closed at $22.79 on Oct 9, 2026, 38% above its 52-week low and 32% below its 52-week high.
3 Form 144 notices of planned sales are on file, the latest filed Aug 27, 2025.
Last 90 days
Price and insider trades, last year
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at COMPASS MINERALS INTERNATIONAL INC, scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 28Weak | Joseph E Reece director buy | $48k 5,000 shares | +31% | - |
Planned sales
Form 144 notices filed before a sale of restricted or control stock, newest first. The sale itself usually reaches a Form 4 within days. All planned sales
| Filed | Seller | Shares | Value | Sale date | Past 3 months |
|---|---|---|---|---|---|
| Aug 27, 2025 | Frontczak Mary L former policy making officer | 1,000 0.00% of outstanding | $19k | Aug 27, 2025 | none |
| Aug 19, 2025 | MARY FRONTCZAK Officer | 9,674 0.02% of outstanding | $181k | Aug 19, 2025 | none |
| May 19, 2025 | Hood Jennifer R. Former Officer | 1,486 0.00% of outstanding | $29k | May 16, 2025 | none |
Transactions
The newest 50 of 154 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 30, 2026 | David Safran director | AGrant or award Common Stock | +1,135 | $0.00 | $0 | 3,191 | 12 d ago |
| Sep 30, 2026 | Richard P Dealy director | AGrant or award Common Stock | +1,333 | $0.00 | $0 | 47,093 | 12 d ago |
| Sep 30, 2026 | Joseph E Reece director | AGrant or award Common Stock | +1,702 | $0.00 | $0 | 97,372 | 12 d ago |
| Sep 11, 2026 | Amy Tills Chief Human Resources Officer | MOption exercise Common Stock | +7,298 | $0.00 | $0 | 7,298 | 28 d ago |
| Sep 11, 2026 | Amy Tills Chief Human Resources Officer | FTax withholding Common Stock | -2,142 | $24.80 | $53k | 5,156 | 28 d ago |
| Sep 11, 2026 | Amy Tills Chief Human Resources Officer | MOption exercise Restricted Stock Unitderivative | -7,298 | $0.00 | $0 | 7,297 | 28 d ago |
| Jun 24, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Common Stock | +2,542 | $0.00 | $0 | 16,735 | Jun 26, 2026 |
| Jun 24, 2026 | Benjamin S. Nichols Chief Commercial Officer | FTax withholding Common Stock | -747 | $28.66 | $21k | 15,988 | Jun 26, 2026 |
| Jun 24, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Restricted Stock Unitderivative | -2,542 | $0.00 | $0 | 2,542 | Jun 26, 2026 |
| May 18, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Common Stock | +685 | $0.00 | $0 | 14,388 | May 19, 2026 |
| May 18, 2026 | Benjamin S. Nichols Chief Commercial Officer | FTax withholding Common Stock | -195 | $28.97 | $5,649 | 14,193 | May 19, 2026 |
| May 18, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Restricted Stock Unitderivative | -685 | $0.00 | $0 | 0 | May 19, 2026 |
| May 13, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Common Stock | +737 | $0.00 | $0 | 13,950 | May 14, 2026 |
| May 13, 2026 | Benjamin S. Nichols Chief Commercial Officer | FTax withholding Common Stock | -247 | $30.21 | $7,462 | 13,703 | May 14, 2026 |
| May 13, 2026 | Benjamin S. Nichols Chief Commercial Officer | MOption exercise Restricted Stock Unitderivative | -737 | $0.00 | $0 | 1,473 | May 14, 2026 |
| Mar 31, 2026 | Joseph E Reece director | AGrant or award Common Stock | +1,816 | $0.00 | $0 | 94,465 | Apr 1, 2026 |
| Mar 31, 2026 | Richard P Dealy director | AGrant or award Common Stock | +1,259 | $0.00 | $0 | 44,816 | Apr 1, 2026 |
| Mar 31, 2026 | David Safran director | AGrant or award Common Stock | +1,071 | $0.00 | $0 | 1,252 | Apr 1, 2026 |
| Mar 5, 2026 | Richard P Dealy director | MOption exercise Common Stock | +11,905 | $0.00 | $0 | 43,557 | Mar 9, 2026 |
| Mar 5, 2026 | Lori A Walker director | MOption exercise Common Stockindirect: Walker Joint Revocable Trust | +11,905 | $0.00 | $0 | 58,715 | Mar 9, 2026 |
| Mar 5, 2026 | Gareth T Joyce director | MOption exercise Common Stock | +11,905 | $0.00 | $0 | 43,118 | Mar 9, 2026 |
| Mar 5, 2026 | Joseph E Reece director | MOption exercise Common Stock | +22,322 | $0.00 | $0 | 92,649 | Mar 9, 2026 |
| Mar 5, 2026 | Melissa M Miller director | MOption exercise Common Stock | +11,905 | $0.00 | $0 | 43,152 | Mar 9, 2026 |
| Mar 5, 2026 | Gareth T Joyce director | MOption exercise Restricted Stock Unitderivative | -11,905 | $0.00 | $0 | 0 | Mar 9, 2026 |
| Mar 5, 2026 | Mark Lawrence Roberts director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | David Safran director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Russell David Ball director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Richard P Dealy director | MOption exercise Restricted Stock Unitderivative | -11,905 | $0.00 | $0 | 0 | Mar 9, 2026 |
| Mar 5, 2026 | Denise M Merle director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Lori A Walker director | MOption exercise Restricted Stock Unitderivative | -11,905 | $0.00 | $0 | 0 | Mar 9, 2026 |
| Mar 5, 2026 | Melissa M Miller director | MOption exercise Restricted Stock Unitderivative | -11,905 | $0.00 | $0 | 0 | Mar 9, 2026 |
| Mar 5, 2026 | Gareth T Joyce director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Joseph E Reece director | MOption exercise Deferred Stock Unitsderivative | -22,322 | $0.00 | $0 | 0 | Mar 9, 2026 |
| Mar 5, 2026 | Richard P Dealy director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Melissa M Miller director | AGrant or award Restricted Stock Unitderivative | +5,032 | $0.00 | $0 | 5,032 | Mar 9, 2026 |
| Mar 5, 2026 | Joseph E Reece director | AGrant or award Deferred Stock Unitsderivative | +9,434 | $0.00 | $0 | 9,434 | Mar 9, 2026 |
| Mar 3, 2026 | Patrick James Merrin Chief Operations Officer | MOption exercise Common Stock | +18,525 | $0.00 | $0 | 18,525 | Mar 4, 2026 |
| Mar 3, 2026 | Patrick James Merrin Chief Operations Officer | FTax withholding Common Stock | -5,003 | $24.68 | $123k | 13,522 | Mar 4, 2026 |
| Mar 3, 2026 | Patrick James Merrin Chief Operations Officer | MOption exercise Restricted Stock Unitderivative | -11,047 | $0.00 | $0 | 22,094 | Mar 4, 2026 |
| Mar 3, 2026 | Patrick James Merrin Chief Operations Officer | MOption exercise Restricted Stock Unitderivative | -7,478 | $0.00 | $0 | 7,477 | Mar 4, 2026 |
| Dec 31, 2025 | David Safran director | AGrant or award Common Stock | +181 | $0.00 | $0 | 181 | Jan 29, 2026 |
| Jan 28, 2026 | Peter Fjellman Chief Financial Officer | MOption exercise Common Stock | +8,321 | $0.00 | $0 | 8,321 | Jan 29, 2026 |
| Dec 31, 2025 | Mark Lawrence Roberts director | AGrant or award Common Stock | +196 | $0.00 | $0 | 196 | Jan 29, 2026 |
| Jan 28, 2026 | Peter Fjellman Chief Financial Officer | FTax withholding Common Stock | -2,720 | $25.90 | $70k | 5,601 | Jan 29, 2026 |
| Dec 18, 2025 | David Safran director | AGrant or award Restricted Stock Unitderivative | +1,348 | $0.00 | $0 | 1,348 | Jan 29, 2026 |
| Dec 18, 2025 | Mark Lawrence Roberts director | AGrant or award Restricted Stock Unitderivative | +1,348 | $0.00 | $0 | 1,348 | Jan 29, 2026 |
| Jan 28, 2026 | Peter Fjellman Chief Financial Officer | MOption exercise Restricted Stock Unitderivative | -8,321 | $0.00 | $0 | 16,641 | Jan 29, 2026 |
| Dec 31, 2025 | Denise M Merle director | AGrant or award Common Stock | +220 | $0.00 | $0 | 220 | Jan 26, 2026 |
| Dec 18, 2025 | Denise M Merle director | AGrant or award Restricted Stock Unitderivative | +1,348 | $0.00 | $0 | 1,348 | Jan 26, 2026 |
| Jan 18, 2026 | Edward C Dowling President and CEO | MOption exercise Common Stock | +22,350 | $0.00 | $0 | 73,139 | Jan 20, 2026 |
Insiders
Everyone who has filed a Form 4 here.
- Russell David Balldirector
- Richard P Dealydirector
- Edward C DowlingPresident and CEO
- Peter FjellmanChief Financial Officer
- Gareth T Joycedirector
- Denise M Merleofficer, director
- Patrick James MerrinChief Operations Officer
- Melissa M Millerdirector
- Benjamin S. NicholsChief Commercial Officer
- Joseph E Reecedirector
- Mark Lawrence Robertsdirector
- David Safrandirector
- Amy TillsChief Human Resources Officer
- Lori A Walkerdirector
Questions about CMP
Answered from the filings on this page, as of the latest one.
Are insiders buying CMP?
No. In the last 90 days no insider at COMPASS MINERALS INTERNATIONAL INC bought or sold shares on the open market according to SEC Form 4 filings. The rows on file from that period are grants, exercises, tax withholding or other transactions, which carry no view on the price.
Who was the last insider to trade CMP on the open market?
Joseph E Reece (director) bought $48k of CMP on Mar 26, 2025 and filed the Form 4 on Mar 27, 2025. InsiderTell scored 28 (weak).
How many insiders file Form 4 at COMPASS MINERALS INTERNATIONAL INC?
14 people have filed a Form 4 at COMPASS MINERALS INTERNATIONAL INC, among them Russell David Ball (director), Richard P Dealy (director), Edward C Dowling (President and CEO). Officers, directors and holders of more than 10% of a share class must report their trades within two business days.
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.