Compass Minerals International, Inc. (CMP)
NYSE: CMP · Mining & Quarrying of Nonmetallic Minerals (No Fuels) · Overland Park, KS · filing with the SEC since 2003
Grade3.3
◀ Past 2.2● Present 3.5▶ Future 4.9
Who owns Compass Minerals International, Inc.
As filed with the SECHolders of 5% or more
4
Blackrock, Inc. holds 6.1% of Common Stock, as its SCHEDULE 13G/A filed Apr 27, 2026 says.
Directors and officers
16
report now, of 51 people on the record since 2006. Their holdings as a group are not read here.
Institutions as a whole
n/a
The record does not read the share held by managers that file Form 13F, so none is printed and no split of the rest is estimated. What it holds is the 4 named at left.
Holders of 5% or moreshare of the class, as filed
Blackrock, Inc.
SCHEDULE 13G/A · filed Apr 27, 2026 · Common Stock · 8.2% in Jul 17, 2025
State Street Corporation
SCHEDULE 13G · filed May 12, 2026 · COMMON STOCK · 4.9% in Feb 9, 2026
M Partners Fund LP
SCHEDULE 13G · filed Nov 18, 2025 · Common Stock
American Century Investment Management, Inc.
SCHEDULE 13G · filed Aug 14, 2026 · Common Stock
Gumshoe Capital Management LLC
SCHEDULE 13G/A · filed Aug 14, 2025 · Common stock, $0.01 par value · reported falling below 5%, from 5% in Apr 28, 2025
The Vanguard Group
SCHEDULE 13G/A · filed Mar 26, 2026 · Common Stock · reported falling below 5%, from 6.65% in Oct 30, 2025
What CMP reports owning in othersstakes of 5% or more, and other ties
Other ties the annual report names
Fortress
A company bought · acquisition, asset acquisition · Apr 2023 · owns, named in the 10-K filed Dec 12, 2025
41 subsidiaries in 7 countries, from the list filed with the 10-K filed Dec 12, 2025.
Insider tradesForm 4
0sales
0purchases
0sales on a scheduled plan
0people selling
$0sold, in dollars
$0bought, in dollars
Open-market trades on Form 4 from Oct 19, 2025 to Oct 19, 2026. A scheduled plan is a selling program set in advance under SEC rule 10b5-1. The trades are listed as filed and do not feed the grade.
By calendar yearSoldBought
2025 runs to Oct 19, 2026. Dollars as filed, summed by the transaction date.
People who traded in the window
No one on the roster filed an open-market trade in the window.