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Schedule 13G

CMP Schedule 13G filing by State Street

State Street reported beneficial ownership of 2.3M shares, representing 12% of COMPASS MINERALS INTERNATION in this filing.

FiledNov 10, 2025
Ownership dateSep 30, 2025
Reported shares2.3M
Reported ownership12%
Ownership details

Voting and dispositive power reported in the filing

These figures describe the reporting filer’s disclosed voting and investment authority. They should be read together with the reported share count and percentage.

Sole voting power 2.2M
Shared voting power 2.2M
Sole dispositive power 2.3M
Shared dispositive power 2.3M
Compared with the prior filing

How the reported position changed

This compares the current filing with the previous tracked Schedule 13 filing from the same reporting CIK for CMP. A change between filings does not by itself establish when shares were bought or sold.

Previous filingOct 17, 2024
Reported share change+1,511,145
Ownership percentage change+10.1 pts
Previous filingThis filing
Reported shares794.6K2.3M
Reported ownership1.9%12%
Price context

Price dates alongside the ownership filing

Price data provides market context around the disclosure. It does not identify the filer’s actual transaction price.

Close near filing date$17.61as of Nov 10, 2025
Latest tracked price$29.65as of Aug 5, 2026
Source

Original filing and accession

Use the SEC filing as the primary source when you need the complete disclosure, footnotes, exhibits, or reporting-person details.

Reporting filer
State Street
CIK
CIK0000093751
Accession
0000093751-25-000591
Form
Schedule 13G
Read the filing in context

Understand what a Schedule 13 filing does—and does not—tell you.