Compass Minerals International, Inc.

CMPNYSEBasic Materials● Active

$29.81

+$0.18(+0.61%)

Market Cap$1.3B

P/E Ratio—

52W High$34.5

52W Low$16.4

Avg Volume688K

Open$30.19

Beta1.26

Overview

Compass Minerals International, Inc. (CMP) Insider Trading

Form 4 buy vs sell counts, ratio, and sentiment — switch this quarter or last 12 months; chart and transactions below.

SEC EDGAR · FMP · CMP · as of Jun 8, 2026

Activity summary

Buy transactions

P-Purchase only

Sell transactions

12 Months

Buy/Sell ratio

0.00

Buy/Sell (by trades)

Overall sentiment

NEUTRAL

↑ Buy 0%Active transactions only · RSU vesting excluded100% Sell ↓

Compass Minerals International, Inc. insiders have shown mixed buying and selling activity over the past 12 Months.

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · Buy = P-Purchase only · Sell = S-Sale only

As of Jun 8, 2026

CMP insider buying and selling by quarter

CMP insider selling · CMP insider buying stocks · quarterly insider activity

Total insider buying (incl. awards)Total insider selling

276K138K0

2024 Q4

2025 Q1

2025 Q2

2025 Q3

2025 Q4

2026 Q1

2026 Q2

2026 Q4

Mobile shows last 4Q · Desktop shows full 8Q

▸ Source: SEC EDGAR · Form 3 & 4 · via Financial Modeling Prep · last 8 quarters

As of Jun 8, 2026

Active insiders

Most active in past 12 months · CMP ceo insider trading

Showing all insiders · Click a card to filter the transactions table below

▸ Aggregated from reportingName · top 5 by trade count (12M) · no extra API

Recent insider transactions

CMP executive sell shares · CMP board member insider trading · CMP insider trading SEC filing

Showing 30 most recent · Common Stock · Form 4 only

Scroll horizontally to see all columns

Date	Insider	Type	Shares	Price	Value	After trans.	Filing
Mar 31, 2026	Reece Joseph E Director	Award	1,816	—	—	94,465	Form 4
Mar 31, 2026	DEALY RICHARD P Director	Award	1,259	—	—	44,816	Form 4
Mar 5, 2026	DEALY RICHARD P Director	Option	11,905	—	—	43,557	Form 4
Mar 5, 2026	WALKER LORI A Director	Option	11,905	—	—	58,715	Form 4
Mar 5, 2026	Reece Joseph E Director	Option	22,322	—	—	92,649	Form 4
Mar 5, 2026	Joyce Gareth T Director	Option	11,905	—	—	43,118	Form 4
Mar 5, 2026	Miller Melissa M Director	Option	11,905	—	—	43,152	Form 4
Dec 31, 2025	WALKER LORI A Director	Award	1,528	—	—	45,820	Form 4
Dec 31, 2025	Reece Joseph E Director	Award	2,260	—	—	70,327	Form 4
Dec 31, 2025	Joyce Gareth T Director	Award	1,401	—	—	31,213	Form 4
Dec 31, 2025	DEALY RICHARD P Director	Award	1,496	—	—	31,652	Form 4
Dec 31, 2025	Miller Melissa M Director	Award	1,433	—	—	31,247	Form 4
Sep 30, 2025	Joyce Gareth T Director	Award	1,433	—	—	29,812	Form 4
Sep 30, 2025	Reece Joseph E Director	Award	2,312	—	—	68,067	Form 4
Sep 30, 2025	Miller Melissa M Director	Award	1,465	—	—	29,814	Form 4
Sep 30, 2025	WALKER LORI A Director	Award	1,563	—	—	42,229	Form 4
Sep 30, 2025	DEALY RICHARD P Director	Award	1,530	—	—	30,156	Form 4
Jun 30, 2025	Joyce Gareth T Director	Award	1,369	—	—	28,379	Form 4
Jun 30, 2025	DEALY RICHARD P Director	Award	1,463	—	—	28,626	Form 4
Jun 30, 2025	Miller Melissa M Director	Award	1,400	—	—	28,349	Form 4
Jun 30, 2025	Reece Joseph E Director	Award	2,209	—	—	65,755	Form 4
Jun 30, 2025	WALKER LORI A Director	Award	1,494	—	—	40,666	Form 4
Mar 31, 2025	DEALY RICHARD P Director	Award	3,163	—	—	27,163	Form 4
Mar 31, 2025	Joyce Gareth T Director	Award	2,961	—	—	27,010	Form 4
Mar 31, 2025	Reece Joseph E Director	Award	4,777	—	—	63,546	Form 4

Reece Joseph E

Director

Award

Date

Mar 31

1,816

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Award

Date

Mar 31

1,259

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Option

Date

Mar 5

11,905

Price

—

Value

—

View Form 4 on SEC.gov

WALKER LORI A

Director

Option

Date

Mar 5

11,905

Price

—

Value

—

View Form 4 on SEC.gov

Reece Joseph E

Director

Option

Date

Mar 5

22,322

Price

—

Value

—

View Form 4 on SEC.gov

Joyce Gareth T

Director

Option

Date

Mar 5

11,905

Price

—

Value

—

View Form 4 on SEC.gov

Miller Melissa M

Director

Option

Date

Mar 5

11,905

Price

—

Value

—

View Form 4 on SEC.gov

WALKER LORI A

Director

Award

Date

Dec 31

1,528

Price

—

Value

—

View Form 4 on SEC.gov

Reece Joseph E

Director

Award

Date

Dec 31

2,260

Price

—

Value

—

View Form 4 on SEC.gov

Joyce Gareth T

Director

Award

Date

Dec 31

1,401

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Award

Date

Dec 31

1,496

Price

—

Value

—

View Form 4 on SEC.gov

Miller Melissa M

Director

Award

Date

Dec 31

1,433

Price

—

Value

—

View Form 4 on SEC.gov

Joyce Gareth T

Director

Award

Date

Sep 30

1,433

Price

—

Value

—

View Form 4 on SEC.gov

Reece Joseph E

Director

Award

Date

Sep 30

2,312

Price

—

Value

—

View Form 4 on SEC.gov

Miller Melissa M

Director

Award

Date

Sep 30

1,465

Price

—

Value

—

View Form 4 on SEC.gov

WALKER LORI A

Director

Award

Date

Sep 30

1,563

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Award

Date

Sep 30

1,530

Price

—

Value

—

View Form 4 on SEC.gov

Joyce Gareth T

Director

Award

Date

Jun 30

1,369

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Award

Date

Jun 30

1,463

Price

—

Value

—

View Form 4 on SEC.gov

Miller Melissa M

Director

Award

Date

Jun 30

1,400

Price

—

Value

—

View Form 4 on SEC.gov

Reece Joseph E

Director

Award

Date

Jun 30

2,209

Price

—

Value

—

View Form 4 on SEC.gov

WALKER LORI A

Director

Award

Date

Jun 30

1,494

Price

—

Value

—

View Form 4 on SEC.gov

DEALY RICHARD P

Director

Award

Date

Mar 31

3,163

Price

—

Value

—

View Form 4 on SEC.gov

Joyce Gareth T

Director

Award

Date

Mar 31

2,961

Price

—

Value

—

View Form 4 on SEC.gov

Reece Joseph E

Director

Award

Date

Mar 31

4,777

Price

—

Value

—

View Form 4 on SEC.gov

⚡ = value ≥ $1M · Award/Option price shows — · formType=4 · securityName=Common Stock · url → sec.gov/Archives/edgar

1 / 2

▸ Source: SEC EDGAR · Form 4 filings · ⚡ = value ≥ $1M · Award/Option price shows —

About CMP insider trading

CMP insider trades

Compass Minerals International, Inc. (CMP) insider trading data is sourced from SEC Form 4 filings submitted by corporate insiders, including Reece Joseph E (Director), DEALY RICHARD P (Director), WALKER LORI A (Director). Over the past 12 months, 5 insiders have filed transactions with the SEC. CMP insiders have been mixed buying and selling, which may reflect pre-scheduled Rule 10b5-1 plan executions.

For Compass Minerals International, Inc.'s institutional ownership breakdown and insider ownership percentage, see the Ownership tab → Ownership tab →

Buy/Sell signal logic

acquisitionOrDisposition field:

A = Acquisition (buy) · D = Disposition (sell)

RSU vesting (M-Exempt) excluded from sentiment

Form 4SEC filing required within 2 business days of any insider transaction

10b5-1Pre-scheduled trading plan that allows insiders to sell on autopilot

Open MktDirect purchase or sale on the open market (excludes awards, options)

Ownership SEC filings Financial statements Price history Forecast & ratings Earnings

Frequently asked questions

CMP insider trading · 5 questions

The insiders of Compass Minerals International, Inc. (CMP) include executives and directors such as Reece Joseph E (Director), DEALY RICHARD P (Director), WALKER LORI A (Director), among others. Over the past 12 months, 5 insiders have filed Form 4 transactions with the SEC. Insider transactions are required to be reported within 2 business days of the trade date.

CMP board member insider tradingwho are CMP insidersCMP insider rosterCompass Minerals International, Inc. executives insider activity

▸ Source: FMP /stable/insider-trading/search · SEC EDGAR Form 3 & 4 · acquisitionOrDisposition A=Buy, D=Sell · RSU vesting (M-Exempt) excluded from sentiment bar · As of Jun 8, 2026