Compass Minerals International, Inc. (CMP) has 20 known insider and institutional holders on record. The largest holder is Koch, Inc. with 7,034,609 shares. Other notable holders include KM&T Investment Holdings, LLC and Reece Joseph E.
Over the last 12 months, insiders have made 56 transactions in CMP stock — 39 buys (valued at RSU Award) and 0 sells (valued at RSU Award). Insider buying has outpaced selling during this period, which may signal confidence in the company's prospects.
CMP Insider Ownership
Top Holder
Koch, Inc.
7,034,609 shares
Buys (12 mo)
39
$0.00 value
Sells (12 mo)
0
$0.00 value
12-Month Transaction Activity
Top Insider Holders
| # |
Name |
Role |
Shares Owned |
Last Filed |
Relative Size |
| 1 |
Koch, Inc. |
10 Percent Owner |
7,034,609 |
2024-08-02 |
|
| 2 |
Km&t Investment Holdings, Llc |
Director |
7,034,609 |
2022-10-21 |
|
| 3 |
Reece Joseph E |
Director |
94,465 |
2026-04-01 |
|
| 4 |
Walker Lori A |
Director |
45,820 |
2026-01-05 |
|
| 5 |
Dealy Richard P |
Director |
44,816 |
2026-04-01 |
|
| 6 |
Grant Richard S |
Director |
43,335 |
2021-09-21 |
|
| 7 |
Miller Melissa M |
Director |
31,247 |
2026-01-05 |
|
| 8 |
Joyce Gareth T |
Director |
31,213 |
2026-01-05 |
|
| 9 |
Dowling Edward C |
President and CEO |
22,350 |
2026-01-20 |
|
| 10 |
Rothwell Allan R |
Director |
21,500 |
2021-12-21 |
|
| 11 |
Williams Paul S |
Director |
20,694 |
2022-12-22 |
|
| 12 |
Nichols Benjamin S. |
Chief Commercial Officer |
17,576 |
2025-11-26 |
|
| 13 |
Ford Eric |
Director |
16,472 |
2023-07-05 |
|
| 14 |
Dantoni David J |
Director |
10,821 |
2020-05-15 |
|
| 15 |
Yoder Amy |
Director |
9,265 |
2022-12-22 |
|
| 16 |
Tills Amy |
Chief Human Resources Officer |
8,979 |
2025-11-26 |
|
| 17 |
Malecha Francis Joseph |
President and CEO |
7,781 |
2018-04-04 |
|
| 18 |
Toman Diana |
SVP, General Counsel |
7,500 |
2019-01-04 |
|
| 19 |
Merrin Patrick James |
Chief Operations Officer |
7,477 |
2026-03-04 |
|
| 20 |
Crenshaw Lorin |
Chief Financial Officer |
7,217 |
2023-10-17 |
|
Recent Transactions (last 12 months)
| Date |
Name |
Role |
Type |
Shares |
Price |
Value |
| 2026-03-31 |
Safran David |
Director |
RSU Award |
1,071 |
- |
- |
| 2026-03-31 |
Reece Joseph E |
Director |
RSU Award |
1,816 |
- |
- |
| 2026-03-31 |
Dealy Richard P |
Director |
RSU Award |
1,259 |
- |
- |
| 2026-03-05 |
Safran David |
Director |
RSU Award |
5,032 |
- |
- |
| 2026-03-05 |
Roberts Mark Lawrence |
Director |
RSU Award |
5,032 |
- |
- |
| 2026-03-05 |
Joyce Gareth T |
Director |
Option Exercise (Sell) |
11,905 |
- |
- |
| 2026-03-05 |
Miller Melissa M |
Director |
Option Exercise (Sell) |
11,905 |
- |
- |
| 2026-03-05 |
Reece Joseph E |
Director |
Option Exercise (Sell) |
22,322 |
- |
- |
| 2026-03-05 |
Merle Denise M |
Director |
RSU Award |
5,032 |
- |
- |
| 2026-03-05 |
Ball Russell David |
Director |
RSU Award |
5,032 |
- |
- |
| 2026-03-05 |
Walker Lori A |
Director |
Option Exercise (Sell) |
11,905 |
- |
- |
| 2026-03-05 |
Dealy Richard P |
Director |
Option Exercise (Sell) |
11,905 |
- |
- |
| 2026-03-03 |
Merrin Patrick James |
Chief Operations Officer |
Option Exercise (Sell) |
7,478 |
- |
- |
| 2025-12-31 |
Safran David |
Director |
RSU Award |
181 |
- |
- |
| 2025-12-18 |
Safran David |
Director |
RSU Award |
1,348 |
- |
- |
| 2025-12-18 |
Safran David |
Director |
Unknown |
- |
- |
- |
| 2025-12-31 |
Roberts Mark Lawrence |
Director |
RSU Award |
196 |
- |
- |
| 2025-12-18 |
Roberts Mark Lawrence |
Director |
RSU Award |
1,348 |
- |
- |
| 2025-12-18 |
Roberts Mark Lawrence |
Director |
Unknown |
- |
- |
- |
| 2026-01-28 |
Fjellman Peter |
Chief Financial Officer |
Tax Withholding of RSU |
2,720 |
$25.90 |
$70.45K |
| 2025-12-31 |
Merle Denise M |
Director |
RSU Award |
220 |
- |
- |
| 2025-12-18 |
Merle Denise M |
Director |
RSU Award |
1,348 |
- |
- |
| 2025-12-18 |
Merle Denise M |
Director |
Unknown |
- |
- |
- |
| 2026-01-18 |
Dowling Edward C |
President and CEO |
Option Exercise (Sell) |
22,350 |
- |
- |
| 2025-12-31 |
Joyce Gareth T |
Director |
RSU Award |
1,401 |
- |
- |
