# Compass Minerals International Inc: filings

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)

## Reports and events: 341 filings

Newest first, by EDGAR acceptance time (Eastern). Filter with ?form= one of: `periodic`, `8-K`, `10-K`, `10-Q`, `4`, `proxy`, `13dg`, `all`, or any form this company filed (4 1302, 8-K 239, SC 13G/A 67, 10-Q 53, 3 48, CORRESP 29, SC 13G 22, UPLOAD 20, 11-K 18, DEF 14A 18, 10-K 17, DEFA14A 12, 8-K/A 8, 4/A 7, S-8 5, 144 4, SCHEDULE 13G/A 4, ARS 3, CT ORDER 3, NT 10-Q 3, SCHEDULE 13G 3, SD 3, 10-K/A 2, 10-Q/A 2, 3/A 2, NT 10-K 2, 10-KT 1, 144/A 1, 15-12B 1, 15-12B/A 1, 424B3 1, EFFECT 1, NT 11-K 1, PRE 14A 1, S-3 1, SC 13D 1, SC 13D/A 1).

| 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 |
| 2026-01-23 | 21:15 ET | [DEF 14A](/filings/0001308179-26-000019.md) | Proxy statement, period 2026-03-05 | 0001308179-26-000019 |
| 2025-12-23 | 21:10 ET | [8-K](/filings/0001227654-25-000201.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001227654-25-000201 |
| 2025-12-19 | 23:55 ET | [8-K](/filings/0001104659-25-122646.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-122646 |
| 2025-12-12 | 01:16 ET | [10-K](/filings/0001227654-25-000199.md) | Annual report, period 2025-09-30 | 0001227654-25-000199 |
| 2025-12-08 | 21:30 ET | [8-K](/filings/0001227654-25-000196.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-25-000196 |
| 2025-08-28 | 20:21 ET | [8-K](/filings/0001227654-25-000155.md) | 8.01 Other events; 9.01 Financial statements and exhibits | 0001227654-25-000155 |
| 2025-08-11 | 20:41 ET | [10-Q](/filings/0001227654-25-000146.md) | Quarterly report, period 2025-06-30 | 0001227654-25-000146 |
| 2025-08-11 | 20:34 ET | [8-K](/filings/0001227654-25-000145.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-25-000145 |
| 2025-06-27 | 10:45 ET | [8-K](/filings/0001227654-25-000121.md) | 5.02 Departure or appointment of officers or directors | 0001227654-25-000121 |
| 2025-06-16 | 21:01 ET | [8-K](/filings/0001227654-25-000103.md) | 1.01 Entry into a material agreement; 2.03 New direct financial obligation; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001227654-25-000103 |
| 2025-06-03 | 21:11 ET | [8-K](/filings/0001227654-25-000098.md) | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001227654-25-000098 |
| 2025-05-08 | 20:20 ET | [10-Q](/filings/0001227654-25-000091.md) | Quarterly report, period 2025-03-31 | 0001227654-25-000091 |
| 2025-05-07 | 20:39 ET | [8-K](/filings/0001227654-25-000088.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-25-000088 |
| 2025-03-25 | 20:41 ET | [8-K](/filings/0001104659-25-027807.md) | 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-027807 |
| 2025-03-11 | 20:23 ET | [8-K](/filings/0001227654-25-000065.md) | 5.07 Shareholder vote results | 0001227654-25-000065 |
| 2025-02-10 | 22:22 ET | [10-Q](/filings/0001227654-25-000033.md) | Quarterly report, period 2024-12-31 | 0001227654-25-000033 |
| 2025-02-10 | 22:21 ET | [8-K](/filings/0001227654-25-000032.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-25-000032 |
| 2025-01-28 | 11:50 ET | [8-K](/filings/0001104659-25-006529.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-25-006529 |
| 2025-01-23 | 21:15 ET | [DEF 14A](/filings/0001308179-25-000013.md) | Proxy statement, period 2025-03-06 | 0001308179-25-000013 |
| 2024-12-16 | 22:19 ET | [10-K](/filings/0001227654-24-000230.md) | Annual report, period 2024-09-30 | 0001227654-24-000230 |
| 2024-12-16 | 21:41 ET | [8-K](/filings/0001227654-24-000228.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-24-000228 |
| 2024-10-30 | 22:07 ET | [10-Q](/filings/0001227654-24-000215.md) | Quarterly report, period 2024-06-30 | 0001227654-24-000215 |
| 2024-10-30 | 22:03 ET | [8-K](/filings/0001227654-24-000213.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-24-000213 |
| 2024-10-30 | 22:01 ET | [10-Q/A](/filings/0001227654-24-000212.md) | Quarterly report, amended, period 2024-03-31 | 0001227654-24-000212 |
| 2024-10-29 | 21:23 ET | [10-K/A](/filings/0001227654-24-000210.md) | Annual report, amended, period 2023-09-30 | 0001227654-24-000210 |
| 2024-09-19 | 20:16 ET | [8-K](/filings/0001227654-24-000171.md) | 1.01 Entry into a material agreement; 8.01 Other events; 9.01 Financial statements and exhibits | 0001227654-24-000171 |
| 2024-09-17 | 10:03 ET | [8-K](/filings/0001227654-24-000168.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-24-000168 |
| 2024-08-16 | 20:15 ET | [8-K](/filings/0001227654-24-000165.md) | 1.01 Entry into a material agreement; 3.01 Delisting notice; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001227654-24-000165 |
| 2024-08-02 | 00:34 ET | [SC 13D/A](/filings/0001193125-24-193114.md) | Ownership report, active investor, amended | 0001193125-24-193114 |
| 2024-07-03 | 10:50 ET | [8-K](/filings/0001227654-24-000148.md) | 4.02 Non-reliance on financial statements | 0001227654-24-000148 |
| 2024-07-01 | 20:08 ET | [8-K](/filings/0001227654-24-000142.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001227654-24-000142 |
| 2024-06-25 | 10:51 ET | [8-K](/filings/0001227654-24-000128.md) | 5.02 Departure or appointment of officers or directors | 0001227654-24-000128 |
| 2024-06-10 | 23:13 ET | [8-K](/filings/0001104659-24-069775.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-24-069775 |
| 2024-05-17 | 20:03 ET | [8-K](/filings/0001227654-24-000113.md) | 5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits | 0001227654-24-000113 |
| 2024-05-15 | 20:04 ET | [10-Q](/filings/0001227654-24-000110.md) | Quarterly report, period 2024-03-31 | 0001227654-24-000110 |
| 2024-05-07 | 20:32 ET | [8-K](/filings/0001227654-24-000101.md) | 2.02 Results of operations; 9.01 Financial statements and exhibits | 0001227654-24-000101 |
| 2024-03-27 | 21:00 ET | [8-K](/filings/0001104659-24-039754.md) | 1.01 Entry into a material agreement; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-24-039754 |
| 2024-03-08 | 21:19 ET | [8-K](/filings/0001227654-24-000070.md) | 5.07 Shareholder vote results | 0001227654-24-000070 |
| 2024-02-21 | 22:07 ET | [8-K](/filings/0001227654-24-000051.md) | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001227654-24-000051 |
| 2024-02-08 | 22:56 ET | [10-Q](/filings/0001227654-24-000036.md) | Quarterly report, period 2023-12-31 | 0001227654-24-000036 |

Page 1 of 7. [Older](/companies/cmp/filings.md?page=2)
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:10 ET. No prices; not investment advice.