CMP
insider transactionsCOMPASS MINERALS INTERNATIONAL INC — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
Not enough data to chart yet.
Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
-
Exercise·M
Chief Commercial Officer
$0
685 sh
Own New
-
Other·F
Chief Commercial Officer
$5.6K
195 sh · $28.97
Own -1%
-
Exercise·M
Chief Commercial Officer
$0
685 sh
Own +5%
-
Exercise·M
Chief Commercial Officer
$0
737 sh
Own +100%
-
Other·F
Chief Commercial Officer
$7.5K
247 sh · $30.21
Own -2%
-
Exercise·M
Chief Commercial Officer
$0
737 sh
Own +6%
-
Grant·A
Director
$0
1.1K sh
Own +592%
-
Grant·A
Director
$0
1.8K sh
Own +2%
-
Grant·A
Director
$0
1.3K sh
Own +3%
-
Grant·A
Director
$0
5.0K sh
Own New
-
Grant·A
Director
$0
5.0K sh
Own New
-
Grant·A
Director
$0
5.0K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own +38%
-
Grant·A
Director
$0
5.0K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own +38%
-
Grant·A
Director
$0
9.4K sh
Own New
-
Exercise·M
Director
$0
22.3K sh
Own New
-
Exercise·M
Director
$0
22.3K sh
Own +32%
-
Grant·A
Director
$0
5.0K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own +25%
-
Grant·A
Director
$0
5.0K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own New
-
Exercise·M
Director
$0
11.9K sh
Own +38%
-
Exercise·M
Chief Operations Officer
$0
7.5K sh
Own New
-
Exercise·M
Chief Operations Officer
$0
11.0K sh
Own +100%
-
Other·F
Chief Operations Officer
$123.5K
5.0K sh · $24.68
Own -27%
-
Exercise·M
Chief Operations Officer
$0
18.5K sh
Own New
-
Exercise·M
Peter Fjellman KEY
Chief Financial Officer
$0
8.3K sh
Own +100%
-
Other·F
Peter Fjellman KEY
Chief Financial Officer
$70.4K
2.7K sh · $25.90
Own -33%
-
Exercise·M
Peter Fjellman KEY
Chief Financial Officer
$0
8.3K sh
Own New
-
Exercise·M
Edward C Dowling KEY
President and CEO
$0
22.4K sh
Own New
-
Other·F
Edward C Dowling KEY
President and CEO
$160.2K
6.9K sh · $23.29
Own -9%
-
Exercise·M
Edward C Dowling KEY
President and CEO
$0
22.4K sh
Own +44%
-
Grant·A
Director
$0
1.4K sh
Own +5%
-
Grant·A
Director
$0
1.4K sh
Own +5%
-
Grant·A
Director
$0
2.3K sh
Own +3%
-
Grant·A
Director
$0
1.5K sh
Own +3%
-
Grant·A
Director
$0
1.5K sh
Own +5%
-
Grant·A
Director
$0
220 sh
Own New
-
Grant·A
Director
$0
181 sh
Own New
-
Grant·A
Director
$0
196 sh
Own New
-
Grant·A
Director
$0
1.3K sh
Own New
-
Grant·A
Director
$0
1.3K sh
Own New
-
Grant·A
Director
$0
1.3K sh
Own New
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| May 18, 2026 | Benjamin S. Nichols | Exercise M | 685 | $0 |
| May 18, 2026 | Benjamin S. Nichols | Other F | 195 | $5.6K |
| May 18, 2026 | Benjamin S. Nichols | Exercise M | 685 | $0 |
| May 13, 2026 | Benjamin S. Nichols | Exercise M | 737 | $0 |
| May 13, 2026 | Benjamin S. Nichols | Other F | 247 | $7.5K |
| May 13, 2026 | Benjamin S. Nichols | Exercise M | 737 | $0 |
| Mar 31, 2026 | David Safran | Grant A | 1.1K | $0 |
| Mar 31, 2026 | Joseph E Reece | Grant A | 1.8K | $0 |
| Mar 31, 2026 | Richard P Dealy | Grant A | 1.3K | $0 |
| Mar 5, 2026 | David Safran | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Mark Lawrence Roberts | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Gareth T Joyce | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Gareth T Joyce | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Gareth T Joyce | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Melissa M Miller | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Melissa M Miller | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Melissa M Miller | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Joseph E Reece | Grant A | 9.4K | $0 |
| Mar 5, 2026 | Joseph E Reece | Exercise M | 22.3K | $0 |
| Mar 5, 2026 | Joseph E Reece | Exercise M | 22.3K | $0 |
| Mar 5, 2026 | Denise M Merle | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Lori A Walker | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Lori A Walker | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Richard P Dealy | Grant A | 5.0K | $0 |
| Mar 5, 2026 | Richard P Dealy | Exercise M | 11.9K | $0 |
| Mar 5, 2026 | Richard P Dealy | Exercise M | 11.9K | $0 |
| Mar 3, 2026 | Patrick James Merrin | Exercise M | 7.5K | $0 |
| Mar 3, 2026 | Patrick James Merrin | Exercise M | 11.0K | $0 |
| Mar 3, 2026 | Patrick James Merrin | Other F | 5.0K | $123.5K |
| Mar 3, 2026 | Patrick James Merrin | Exercise M | 18.5K | $0 |
| Jan 28, 2026 | Peter Fjellman KEY | Exercise M | 8.3K | $0 |
| Jan 28, 2026 | Peter Fjellman KEY | Other F | 2.7K | $70.4K |
| Jan 28, 2026 | Peter Fjellman KEY | Exercise M | 8.3K | $0 |
| Jan 18, 2026 | Edward C Dowling KEY | Exercise M | 22.4K | $0 |
| Jan 18, 2026 | Edward C Dowling KEY | Other F | 6.9K | $160.2K |
| Jan 18, 2026 | Edward C Dowling KEY | Exercise M | 22.4K | $0 |
| Dec 31, 2025 | Gareth T Joyce | Grant A | 1.4K | $0 |
| Dec 31, 2025 | Melissa M Miller | Grant A | 1.4K | $0 |
| Dec 31, 2025 | Joseph E Reece | Grant A | 2.3K | $0 |
| Dec 31, 2025 | Lori A Walker | Grant A | 1.5K | $0 |
| Dec 31, 2025 | Richard P Dealy | Grant A | 1.5K | $0 |
| Dec 31, 2025 | Denise M Merle | Grant A | 220 | $0 |
| Dec 31, 2025 | David Safran | Grant A | 181 | $0 |
| Dec 31, 2025 | Mark Lawrence Roberts | Grant A | 196 | $0 |
| Dec 18, 2025 | Denise M Merle | Grant A | 1.3K | $0 |
| Dec 18, 2025 | David Safran | Grant A | 1.3K | $0 |
| Dec 18, 2025 | Mark Lawrence Roberts | Grant A | 1.3K | $0 |
About CMP insider trading
This page tracks insider transactions for COMPASS MINERALS INTERNATIONAL INC (CMP) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.