SEC Form 4 · Updated Daily
CMP
— COMPASS MINERALS INTERNATIONAL, INC. OwnershipInsider and institutional ownership derived from SEC Form 4 filings. Click any owner to see their holdings across every company they’ve filed on, and how their position has changed over time.
Current Reporting Owners
| Owner | Role | Shares Owned | As Of | Last Activity |
|---|---|---|---|---|
| KOCH INDUSTRIES INC | Reporting Owner | 7,034,609 | 2022-10-18 | — |
| Koch, Inc. | 10%+ Owner · Director | 7,034,609 | 2024-08-01 | — |
| KM&T Investment Holdings, LLC | 10%+ Owner · Director | 7,034,609 | 2022-10-18 | — |
| DUCEY MICHAEL E | Director · Officer | 350,033 | 2006-04-25 | M |
| Crutchfield Kevin S | Director · Officer | 192,925 | 2024-01-17 | M |
| DOWLING EDWARD C | Director · Officer | 111,727 | 2026-10-15 | M |
| Reece Joseph E | Director | 97,372 | 2026-09-30 | A |
| Fallis John S | Officer | 82,626 | 2008-02-15 | S |
| BRISIMITZAKIS ANGELO C | Director · Officer | 78,057 | 2012-12-28 | M |
| WALKER LORI A | Director | 58,715 | 2026-03-05 | M |
| Bryan Ronald | Officer | 48,938 | 2011-10-28 | M |
| DEALY RICHARD P | Director | 47,093 | 2026-09-30 | A |
| GRANT RICHARD S | Director | 45,753 | 2021-11-16 | A |
| DANTONI DAVID J | Director | 44,762 | 2020-05-14 | A |
| Miller Melissa M | Director | 43,152 | 2026-03-05 | M |
| Joyce Gareth T | Director | 43,118 | 2026-03-05 | M |
| Standen James D. | Officer | 35,001 | 2024-01-13 | M |
| Schuller George John JR | Officer | 34,534 | 2024-01-13 | M |
| ROTHWELL ALLAN R | Director | 33,280 | 2022-02-24 | A |
| UNDERDOWN RODNEY L | Officer | 31,129 | 2014-11-24 | G |
| GOADBY DAVID J | Officer | 30,010 | 2016-03-11 | M |
| Malecha Francis Joseph | Director · Officer | 28,697 | 2018-03-10 | M |
| Premdas Perry W | Director | 26,724 | 2015-03-31 | A |
| CLARK KEITH E | Officer | 26,538 | 2013-05-01 | M |
| Frontczak Mary L | Officer | 25,229 | 2024-10-15 | M |
| WILLIAMS PAUL S | Director | 23,717 | 2023-02-14 | M |
| Nichols Benjamin S. | Officer | 22,934 | 2026-10-15 | M |
| Ford Eric | Director | 20,433 | 2023-08-18 | F |
| Merrin Patrick James | Officer | 18,525 | 2026-03-03 | M |
| BELL BRADLEY J | Director | 17,979 | 2015-06-30 | A |
| Crenshaw Lorin | Officer | 14,604 | 2023-12-01 | M |
| Bucan Gerald | Officer | 14,305 | 2013-05-06 | M |
| SNIDER TIMOTHY R | Director | 11,058 | 2011-06-30 | A |
| Ward Ashley | Officer | 10,323 | 2026-10-15 | M |
| BAKER VERNON G II | Director | 10,140 | 2008-12-31 | A |
| Yoder Amy | Director | 9,046 | 2023-02-14 | M |
| Fischer Valdemar L | Director | 8,778 | 2021-05-18 | A |
| Fjellman Peter | Officer | 8,321 | 2026-01-28 | M |
| Safran David | Director | 7,413 | 2026-10-09 | A |
| Leunig Jack C. | Officer | 7,410 | 2017-03-10 | M |
| Tills Amy | Officer | 7,298 | 2026-09-11 | M |
| Berger Steven N. | Officer | 5,394 | 2018-03-28 | P |
| Hood Jennifer R. | Officer | 5,321 | 2025-02-28 | M |
| Risner Brandon | Officer | 5,245 | 2026-10-15 | M |
| Dunn B. Gordon | Officer | 4,022 | 2024-05-18 | M |
| Gardiner Jill V | Director | 3,886 | 2024-03-05 | M |
| Foulston Matthew J. | Officer | 3,543 | 2016-03-02 | M |
| Cook Teresa D | Officer | 3,256 | 2023-10-15 | M |
| Cathey Jeffrey M | Officer | 3,152 | 2024-12-18 | M |
| Toman Diana | Officer | 2,962 | 2019-04-01 | M |
| Miller Robert Dana | Officer | 2,659 | 2016-11-01 | M |
| Stevenson John R | Director | 1,978 | 2006-01-03 | A |
| Espelien Keith E. | Officer | 752 | 2015-03-12 | M |
| Merle Denise M | Director | 220 | 2025-12-31 | A |
| Roberts Mark Lawrence | Director | 196 | 2025-12-31 | A |
| Ball Russell David | Director | 186 | 2025-12-31 | A |
| Craft John David | Reporting Owner | 46 | 2016-11-02 | — |
| Griffith S Bradley | Officer | 0 | 2021-07-26 | G |
Recent Filings
| Date | Owner | Activity | Shares | Price | Owned After |
|---|---|---|---|---|---|
| 2026-10-15 | Nichols Benjamin S. | Option exercise (derivative) | 6,090 | $0.00 | 6,089 |
| 2026-10-15 | Nichols Benjamin S. | Option exercise (derivative) | 856 | $0.00 | 0 |
| 2026-10-15 | Nichols Benjamin S. | Tax withholding | 1,977 | $22.59 | 20,957 |
| 2026-10-15 | Nichols Benjamin S. | Option exercise | 6,946 | $0.00 | 22,934 |
| 2026-10-15 | Risner Brandon | Option exercise (derivative) | 4,442 | $0.00 | 4,443 |
| 2026-10-15 | Risner Brandon | Option exercise (derivative) | 803 | $0.00 | 0 |
| 2026-10-15 | Risner Brandon | Tax withholding | 1,465 | $22.59 | 3,780 |
| 2026-10-15 | Risner Brandon | Option exercise | 5,245 | $0.00 | 5,245 |
| 2026-10-15 | DOWLING EDWARD C | Option exercise (derivative) | 45,466 | $0.00 | 45,467 |
| 2026-10-15 | DOWLING EDWARD C | Tax withholding | 20,097 | $22.59 | 91,630 |
| 2026-10-15 | DOWLING EDWARD C | Option exercise | 45,466 | $0.00 | 111,727 |
| 2026-10-15 | Ward Ashley | Option exercise (derivative) | 2,598 | $0.00 | 2,598 |
| 2026-10-15 | Ward Ashley | Tax withholding | 740 | $22.59 | 9,583 |
| 2026-10-15 | Ward Ashley | Option exercise | 2,598 | $0.00 | 10,323 |
| 2026-10-09 | Safran David | Option exercise (derivative) | 3,020 | $0.00 | 0 |
| 2026-10-09 | Safran David | Grant / award | 108 | $0.00 | 7,413 |
| 2026-10-09 | Safran David | Option exercise | 4,114 | $0.00 | 7,305 |
| 2026-09-30 | Safran David | Grant / award | 1,135 | $0.00 | 3,191 |
| 2026-09-30 | Reece Joseph E | Grant / award | 1,702 | $0.00 | 97,372 |
| 2026-09-30 | DEALY RICHARD P | Grant / award | 1,333 | $0.00 | 47,093 |
| 2026-09-11 | Tills Amy | Option exercise (derivative) | 7,298 | $0.00 | 7,297 |
| 2026-09-11 | Tills Amy | Tax withholding | 2,142 | $24.80 | 5,156 |
| 2026-09-11 | Tills Amy | Option exercise | 7,298 | $0.00 | 7,298 |
| 2026-07-28 | Ward Ashley | Option exercise (derivative) | 8,333 | $0.00 | 0 |
| 2026-07-28 | Ward Ashley | Tax withholding | 2,443 | $29.69 | 7,725 |
| 2026-07-28 | Ward Ashley | Option exercise | 8,333 | $0.00 | 10,168 |
| 2026-06-30 | Safran David | Grant / award | 804 | $0.00 | 2,056 |
| 2026-06-30 | DEALY RICHARD P | Grant / award | 944 | $0.00 | 45,760 |
| 2026-06-30 | Reece Joseph E | Grant / award | 1,205 | $0.00 | 95,670 |
| 2026-06-24 | Nichols Benjamin S. | Option exercise (derivative) | 2,542 | $0.00 | 2,542 |
| 2026-06-24 | Nichols Benjamin S. | Tax withholding | 747 | $28.66 | 15,988 |
| 2026-06-24 | Nichols Benjamin S. | Option exercise | 2,542 | $0.00 | 16,735 |
| 2026-05-18 | Nichols Benjamin S. | Option exercise (derivative) | 685 | $0.00 | 0 |
| 2026-05-18 | Nichols Benjamin S. | Tax withholding | 195 | $28.97 | 14,193 |
| 2026-05-18 | Nichols Benjamin S. | Option exercise | 685 | $0.00 | 14,388 |
| 2026-05-13 | Nichols Benjamin S. | Option exercise (derivative) | 737 | $0.00 | 1,473 |
| 2026-05-13 | Nichols Benjamin S. | Tax withholding | 247 | $30.21 | 13,703 |
| 2026-05-13 | Nichols Benjamin S. | Option exercise | 737 | $0.00 | 13,950 |
| 2026-03-31 | Safran David | Grant / award | 1,071 | $0.00 | 1,252 |
| 2026-03-31 | DEALY RICHARD P | Grant / award | 1,259 | $0.00 | 44,816 |
Source: SEC EDGAR Form 4 filings. For informational purposes only — not investment advice.