As of November 6, 2026, 4 holders' latest Schedule 13D or 13G filings report owning 5% or more of Compass Minerals International, Inc. The largest reported stake is BlackRock, Inc.'s, at 6.1%. 10 filings are on record since July 17, 2025 (Schedule 13G/A, April 27, 2026).
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Key facts
- · Reporting person: American Century ETF Trust · Sole voting: 2,149,387 · Shared voting: 0 · Sole dispositive: 2,149,387 · Shared dispositive: 0 · SCHEDULE 13G, 2026-08-14
- · Reporting person: State Street Corporation · Sole voting: 0 · Shared voting: 2,225,825 · Sole dispositive: 0 · Shared dispositive: 2,322,476 · SCHEDULE 13G, 2026-05-12
- · Reporting person: BlackRock, Inc. · Sole voting: 2,480,245 · Shared voting: 0 · Sole dispositive: 2,533,686 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-04-27
- · Reporting person: The Vanguard Group · Sole voting: 0 · Shared voting: 0 · Sole dispositive: 0 · Shared dispositive: 0 · SCHEDULE 13G/A, 2026-03-26
- · Holder: State Street Corporation · Percent: 4.9% · SCHEDULE 13G
Compass Minerals International, Inc. has 10 Schedule 13D or 13G filings on record since 2025-07-17. 4 holders' latest filing reports 5% or more of common stock. Each figure below is the holder's own, as filed, with the filing linked.
Holders
| Holder | Percent | Shares | Latest | Event date |
|---|---|---|---|---|
| BlackRock, Inc. | 6.1% | 2,533,686 | SCHEDULE 13G/A, 2026-04-27 | 2026-03-31 |
| State Street Corporation | 5.5% | 2,322,476 | SCHEDULE 13G, 2026-05-12 | 2026-03-31 |
| M Partners Fund LP | 5.49% | 2,289,834 | SCHEDULE 13G, 2025-11-18 | 2025-11-11 |
| American Century Investment Management, Inc. | 5.4% | 2,273,578 | SCHEDULE 13G, 2026-08-14 | 2026-06-30 |
| Gumshoe Capital Management LLC | 3.2% | 1,324,134 | SCHEDULE 13G/A, 2025-08-14 | 2025-06-30 |
| The Vanguard Group | 0% | 0 | SCHEDULE 13G/A, 2026-03-26 | 2026-03-13 |
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More on Compass Minerals International, Inc. and the records around it.
Compass Minerals International, Inc. elsewhere on the record
- Leadership changes Aug 2026
- Who owns it
Companies that share a holder
- Gumshoe Capital Management LLC also filed stake reports on 1 other company: SITE Centers Corp. (Mar 2026)
- M Partners Fund LP also filed stake reports on 2 other companies: Civeo Corporation (Nov 2025)
- American Century ETF Trust also filed stake reports on 83 other companies: Visteon Corporation (Oct 2026), MarineMax, Inc. (Sep 2026), AdvanSix Inc. (Aug 2026)
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Voting and dispositive power, as filed
| Reporting person | Sole voting | Shared voting | Sole dispositive | Shared dispositive | Filing |
|---|---|---|---|---|---|
| BlackRock, Inc. | 2,480,245 | 0 | 2,533,686 | 0 | SCHEDULE 13G/A, 2026-04-27 |
| State Street Corporation | 0 | 2,225,825 | 0 | 2,322,476 | SCHEDULE 13G, 2026-05-12 |
| American Century ETF Trust | 2,149,387 | 0 | 2,149,387 | 0 | SCHEDULE 13G, 2026-08-14 |
| American Century Investment Management, Inc. | 2,273,578 | 0 | 2,273,578 | 0 | SCHEDULE 13G, 2026-08-14 |
| American Century Companies, Inc. | 2,273,578 | 0 | 2,273,578 | 0 | SCHEDULE 13G, 2026-08-14 |
| Stowers Institute for Medical Research | 2,273,578 | 0 | 2,273,578 | 0 | SCHEDULE 13G, 2026-08-14 |
| The Vanguard Group | 0 | 0 | 0 | 0 | SCHEDULE 13G/A, 2026-03-26 |
The latest filing identifies Compass Minerals International, Inc. by CUSIP 20451N101 and gives its principal executive office as 9900 W. 109th Street, Suite 100, Overland Park, KS 66210 (SCHEDULE 13G, 2026-08-14).
Timeline
| Filed | Holder | Percent | Filing |
|---|---|---|---|
| 2025-07-17 | BlackRock, Inc. | 8.2% | SCHEDULE 13G/A |
| 2025-08-14 | Gumshoe Capital Management LLC | 3.2% | SCHEDULE 13G/A |
| 2025-10-30 | The Vanguard Group | 6.65% | SCHEDULE 13G/A |
| 2025-11-10 | State Street Corporation | 5.5% | SCHEDULE 13G |
| 2025-11-18 | M Partners Fund LP | 5.49% | SCHEDULE 13G |
| 2026-02-09 | State Street Corporation | 4.9% | SCHEDULE 13G |
| 2026-03-26 | The Vanguard Group | 0% | SCHEDULE 13G/A |
| 2026-04-27 | BlackRock, Inc. | 6.1% | SCHEDULE 13G/A |
| 2026-05-12 | State Street Corporation | 5.5% | SCHEDULE 13G |
| 2026-08-14 | American Century Investment Management, Inc. | 5.4% | SCHEDULE 13G |
Questions about who owns Compass Minerals International, Inc.
Who owns Compass Minerals International, Inc.?
On this page, 4 holders' latest ownership filings report 5% or more of Compass Minerals International, Inc.: BlackRock, Inc. (6.1%, Schedule 13G/A, filed 2026-04-27), State Street Corporation (5.5%, Schedule 13G, filed 2026-05-12), M Partners Fund LP (5.49%, Schedule 13G, filed 2025-11-18) and American Century Investment Management, Inc. (5.4%, Schedule 13G, filed 2026-08-14).
Who are the largest shareholders of Compass Minerals International, Inc.?
By the share each holder's latest filing reports, the largest holders of Compass Minerals International, Inc. on this page are BlackRock, Inc. (6.1%), State Street Corporation (5.5%) and M Partners Fund LP (5.49%).
When did BlackRock, Inc. buy into Compass Minerals International, Inc.?
The filings give report dates, not purchase dates. The earliest filing from BlackRock, Inc. on this page is the Schedule 13G/A, filed 2025-07-17, reporting 8.2%; its latest, Schedule 13G/A filed 2026-04-27, reports 6.1%. That earliest filing is itself an amendment, which updates an earlier report.
Is this an audit or a full list?
Neither. The ownership list on this page covers only Schedule 13D and 13G filings, which holders make once they own 5% or more of a class of shares (an amendment can report a stake that has since fallen below 5%); 10 such filings are shown here. It is not an audit and not a full cap table: holders who never reached 5% are not listed, and a stake can change after its latest filing.
Also on the record for Compass Minerals International, Inc.
| Date | Record | Figure | Our page | Source |
|---|---|---|---|---|
| October 28, 2026 | Leadership change: Brett Teuscher appointed, Chief Accounting Officer | — | Leadership changes | Source |
| October 15, 2026 | Leadership change filing (Form 8-K, Item 5.02) | — | Leadership changes | Source |
| August 5, 2026 | Leadership change: Brandon Risner appointed, Chief Operating Officer | — | Leadership changes | Source |
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Where this comes from
Anyone who comes to own more than 5% of a class of a listed company's voting shares has to tell the SEC. A holder who may seek to change or influence the company files Schedule 13D, and has to say in Item 4, "Purpose of Transaction", what it intends to do. A holder with no such intent, such as many index and passive funds, may file the shorter Schedule 13G. Both are amended when the stake changes, including when it falls below 5%.
Every row here is one of those filings, linked to the filing itself. Percentages and share counts are exactly as the holder filed them, for the holder the filing names; an amendment showing a lower figure is shown as filed. Item 4 text is quoted word for word. Where a 13D's Item 4 contains a sentence stating a definite intent to influence the company, that sentence is marked and quoted; the page does not describe the holder or its motives beyond the words it filed. Nothing here is investment advice.