# Compass Minerals International Inc: overview

CMP · NYSE · CIK 1227654 · [Materials](/sectors/materials.md) · fiscal year ends Sep 30

Pages: [Overview](/companies/cmp.md) · [Financials](/companies/cmp/financials.md) · [Filings](/companies/cmp/filings.md) · [Insiders](/companies/cmp/insiders.md)

Latest reported revenue: [$215.3m](/filings/0001227654-26-000054.md) for Q3 FY2026, three months to 2026-06-30, from the 10-Q filed Aug 6, 2026 (XBRL us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax, accession 0001227654-26-000054).

## Last eight quarters

| Line item | Unit | Q4 FY2024 (2024-09-30) | Q1 FY2025 (2024-12-31) | Q2 FY2025 (2025-03-31) | Q3 FY2025 (2025-06-30) | Q4 FY2025 (2025-09-30) | Q1 FY2026 (2025-12-31) | Q2 FY2026 (2026-03-31) | Q3 FY2026 (2026-06-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [209 d](/filings/0001227654-25-000199.md) | [307](/filings/0001227654-26-000012.md) | [495](/filings/0001227654-26-000025.md) | [215](/filings/0001227654-26-000054.md) | [228 d](/filings/0001227654-25-000199.md) | [396](/filings/0001227654-26-000012.md) | [453](/filings/0001227654-26-000025.md) | [215](/filings/0001227654-26-000054.md) |
| Gross margin | % | [9.3% d](/filings/0001227654-25-000199.md) | [11.2%](/filings/0001227654-26-000012.md) | [15.5%](/filings/0001227654-26-000025.md) | [19.2%](/filings/0001227654-26-000054.md) | [16.9% d](/filings/0001227654-25-000199.md) | [16.0%](/filings/0001227654-26-000012.md) | [18.3%](/filings/0001227654-26-000025.md) | [17.6%](/filings/0001227654-26-000054.md) |
| Operating margin | % | [(14.3%) d](/filings/0001227654-25-000199.md) | [0.2%](/filings/0001227654-26-000012.md) | [(0.6%)](/filings/0001227654-26-000025.md) | [7.4%](/filings/0001227654-26-000054.md) | [5.3% d](/filings/0001227654-25-000199.md) | [9.2%](/filings/0001227654-26-000012.md) | [12.4%](/filings/0001227654-26-000025.md) | [5.1%](/filings/0001227654-26-000054.md) |
| Net margin | % | [(23.1%) d](/filings/0001227654-25-000199.md) | [(7.7%)](/filings/0001227654-26-000012.md) | [(6.5%)](/filings/0001227654-26-000025.md) | [(7.9%)](/filings/0001227654-26-000054.md) | [(3.2%) d](/filings/0001227654-25-000199.md) | [4.7%](/filings/0001227654-26-000012.md) | [2.8%](/filings/0001227654-26-000025.md) | [(2.6%)](/filings/0001227654-26-000054.md) |
| Diluted EPS | $ per share | not reported | [(0.57)](/filings/0001227654-26-000012.md) | [(0.77)](/filings/0001227654-26-000025.md) | [(0.41)](/filings/0001227654-26-000054.md) | not reported | [0.43](/filings/0001227654-26-000012.md) | [0.30](/filings/0001227654-26-000025.md) | [(0.13)](/filings/0001227654-26-000054.md) |
| Free cash flow | $m | [(33.6) d](/filings/0001227654-25-000199.md) | [(25.9)](/filings/0001227654-26-000012.md) | [173 d](/filings/0001227654-26-000025.md) | [3.8 d](/filings/0001227654-26-000054.md) | [(22.8) d](/filings/0001227654-25-000199.md) | [(59.8)](/filings/0001227654-26-000012.md) | [179 d](/filings/0001227654-26-000025.md) | [(18.7) d](/filings/0001227654-26-000054.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax. Derived values: 12-month figure less the 9-month figure.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets. Derived values: 12-month figure less the 9-month figure; 6-month figure less the 3-month figure; 9-month figure less the 6-month figure.

## Last five fiscal years

| Line item | Unit | FY2021 (2021-09-30) | FY2022 (2022-09-30) | FY2023 (2023-09-30) | FY2024 (2024-09-30) | FY2025 (2025-09-30) |
| --- | --- | ---: | ---: | ---: | ---: | ---: |
| Revenue | $m | [1,145](/filings/0001227654-24-000210.md) | [1,245](/filings/0001227654-24-000230.md) | [1,205](/filings/0001227654-25-000199.md) | [1,117](/filings/0001227654-25-000199.md) | [1,244](/filings/0001227654-25-000199.md) |
| Gross margin | % | [19.9%](/filings/0001227654-24-000210.md) | [16.0%](/filings/0001227654-24-000230.md) | [19.3%](/filings/0001227654-25-000199.md) | [17.5%](/filings/0001227654-25-000199.md) | [15.3%](/filings/0001227654-25-000199.md) |
| Operating margin | % | [9.2%](/filings/0001227654-24-000210.md) | [3.6%](/filings/0001227654-24-000230.md) | [6.4%](/filings/0001227654-25-000199.md) | [(10.5%)](/filings/0001227654-25-000199.md) | [2.0%](/filings/0001227654-25-000199.md) |
| Net margin | % | [(16.2%)](/filings/0001227654-24-000210.md) | [(1.7%)](/filings/0001227654-24-000230.md) | [0.9%](/filings/0001227654-25-000199.md) | [(18.4%)](/filings/0001227654-25-000199.md) | [(6.4%)](/filings/0001227654-25-000199.md) |
| Diluted EPS | $ per share | [(5.49)](/filings/0001227654-24-000210.md) | [(0.63)](/filings/0001227654-24-000230.md) | [0.25](/filings/0001227654-24-000230.md) | [(4.99)](/filings/0001227654-24-000230.md) | not reported |
| Free cash flow | $m | [55.6](/filings/0001227654-24-000210.md) | [23.8](/filings/0001227654-24-000230.md) | [(48.3)](/filings/0001227654-25-000199.md) | [(99.8)](/filings/0001227654-25-000199.md) | [128](/filings/0001227654-25-000199.md) |

- Revenue. XBRL Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Gross margin (gross profit / revenue). XBRL Gross profit: us-gaap:GrossProfit; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Operating margin (operating income / revenue). XBRL Operating income: us-gaap:OperatingIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Net margin (net income / revenue). XBRL Net income: us-gaap:NetIncomeLoss; Revenue: us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax.
- Diluted EPS. XBRL Diluted EPS: us-gaap:EarningsPerShareDiluted.
- Free cash flow (operating cash flow − capital expenditure). XBRL Operating cash flow: us-gaap:NetCashProvidedByUsedInOperatingActivities; Capital expenditure: us-gaap:PaymentsToAcquireProductiveAssets.

Each value links to the filing it came from. d marks a derived value. A ratio is not reported when any input is missing.

## Insider purchases and sales

The last 20 open-market transactions on Form 4 (codes P and S). Reported price is as stated on the form, not a market price. [All insider transactions](/companies/cmp/insiders.md)

None in coverage.

## Funds that report holding it

From each manager’s latest Form 13F, largest reported value first. Reported value is as filed: filing data, not a price. [All funds](/funds.md)

| Fund | Quarter ended | Reported value | Shares | Put or call | Change on the quarter before |
| --- | --- | ---: | ---: | --- | --- |
| [Koch, Inc.](/funds/2027344.md) | 2026-06-30 | $219.0m | 7,034,609 |  | Unchanged |
| [SailingStone Capital Partners LLC](/funds/1608904.md) | 2026-06-30 | $104.3m | 3,351,366 |  | Reduced −1,474,245 |
| [BlackRock, Inc.](/funds/2012383.md) | 2026-06-30 | $95.8m | 3,078,473 |  | Added +225,710 |
| [STATE STREET CORP](/funds/93751.md) | 2026-06-30 | $76.0m | 2,441,899 |  | Added +119,423 |
| [AMERICAN CENTURY COMPANIES INC](/funds/748054.md) | 2026-06-30 | $70.8m | 2,273,578 |  | Added +594,903 |
| [VANGUARD CAPITAL MANAGEMENT LLC](/funds/2100119.md) | 2026-06-30 | $55.3m | 1,775,518 |  | Added +26,963 |
| [Irenic Capital Management LP](/funds/1929389.md) | 2026-06-30 | $33.3m | 1,068,378 |  | Reduced −367,151 |
| [DIMENSIONAL FUND ADVISORS LP](/funds/354204.md) | 2026-06-30 | $29.6m | 951,151 |  | Added +37,468 |
| [JACOBS LEVY EQUITY MANAGEMENT, INC](/funds/884414.md) | 2026-06-30 | $27.6m | 886,009 |  | New +886,009 |
| [Gumshoe Capital Management LLC](/funds/1995382.md) | 2026-06-30 | $27.2m | 872,348 |  | Reduced −392,535 |

## Recent filings

[All 1,907 filings](/companies/cmp/filings.md)

| Filed | Accepted | Form | What it is | Accession |
| --- | --- | --- | --- | --- |
| 2026-10-15 | 20:36 ET | [8-K](/filings/0001227654-26-000075.md) | 5.02 Departure or appointment of officers or directors; 8.01 Other events | 0001227654-26-000075 |
| 2026-08-06 | 21:09 ET | [10-Q](/filings/0001227654-26-000054.md) | Quarterly report, period 2026-06-30 | 0001227654-26-000054 |
| 2026-08-05 | 21:18 ET | [8-K](/filings/0001227654-26-000051.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001227654-26-000051 |
| 2026-08-05 | 21:17 ET | [8-K](/filings/0001227654-26-000050.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-26-000050 |
| 2026-05-07 | 21:11 ET | [10-Q](/filings/0001227654-26-000025.md) | Quarterly report, period 2026-03-31 | 0001227654-26-000025 |
| 2026-05-06 | 21:04 ET | [8-K](/filings/0001227654-26-000023.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-26-000023 |
| 2026-03-24 | 20:22 ET | [8-K](/filings/0001227654-26-000018.md) | 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001227654-26-000018 |
| 2026-03-10 | 21:59 ET | [8-K](/filings/0001227654-26-000015.md) | 5.07 Shareholder vote results | 0001227654-26-000015 |
| 2026-02-06 | 00:24 ET | [10-Q](/filings/0001227654-26-000012.md) | Quarterly report, period 2025-12-31 | 0001227654-26-000012 |
| 2026-02-04 | 21:53 ET | [8-K](/filings/0001227654-26-000008.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-26-000008 |

## Latest annual report

[Form 10-K for the fiscal year ended Sep 30, 2025](/filings/0001227654-25-000199.md), filed Dec 12, 2025.

## Forecast league

Q4 FY2026, the quarter ended 2026-09-30, is open for forecasts until the first results filing for it is accepted by EDGAR. Results are due by \[object Promise\]. [Forecast this quarter](/leagues/2026q3/targets/d34006a5-9172-47ab-bd34-1136697f0e1a)

## About the filer

- CIK: 1227654
- Tickers: CMP
- Exchange: NYSE
- SIC code: 1400 Mining & Quarrying of  Nonmetallic Minerals (No Fuels)
- State of incorporation: DE
- Filer category: Accelerated filer

Source: SEC EDGAR, XBRL company facts, the filing index and Forms 4. Last ingested by Listed: Oct 24, 2026, 15:35 ET. No prices; not investment advice.