$CMP

$22.93 +$0.00 (0.0%) Close

$CMP Overview Financial Statements SEC Filings Executives News Red Flags Capital Raising Ownership Insider Transactions Congressional Trades

Ownership

13F as of Q2 2026 · 42.0M shares outstanding

Who owns CMP?

By type of holder

Institutions 92.4% Insiders 0.9% Everyone else 6.6%

Concentration Top 10 holders own 55.0%

Koch, Inc. 16.8% · SailingStone Capital Partners LLC 8.0%

Institutional ownership

92.4%

-4.1 pts vs last qtr

Institutional holders

230

+25 vs last qtr

Net shares bought

−1.7M

by institutions in Q2 2026

New / sold out

57 / 32

positions opened vs closed

How is ownership changing?

Institutions, last 8 quarters

Biggest buyers in Q2 2026

Jacobs Levy Equity Management, Inc NEW +886.0K
American Century Companies Inc +594.9K

Biggest sellers in Q2 2026

SailingStone Capital Partners LLC −1.5M
Ewing Morris & Co. Investment Partners Ltd. −1.4M

Who is planning to sell?

No insider has filed a notice of proposed sale (Form 144) for Compass Minerals International, Inc. in the last 12 months.

Is your stake being diluted?

Diluted share count, FY2016–FY2025

+23.8%

+2.40% a year

Each share's claim on the business

−19.2%

shrank without buying or selling a share

Spent on buybacks vs paid in stock

— vs $97.9M

over 10 fiscal years

Diluted shares, split-adjusted

Buybacks Stock-based comp

How patient are the owners?

Institutional shares by how long they've been held

5+ years36% 3–5 years7% 1–3 years43% Under 1 year14%

Quarterly turnover

17.3%

of institutional shares changed hands

Top 10 managers, median time held

3.5 years

Super Investors

Investment managers reporting CMP on Form 13F

Holder	Shares	% of company	Change vs last qtr	Held since	% of their book
K Koch, Inc.	7.0M	16.76%	Unchanged	2024	20.0%
Shares held by quarter Peak holding7.0M (Q4'24) Change over 8 quarters+7.0M Share of the company16.760% Koch, Inc.'s full portfolio →
SC SailingStone Capital Partners LLC	3.4M	7.98%	−1.5M (−30.6%)	2024	19.5%
Shares held by quarter Peak holding6.2M (Q1'25) Change over 8 quarters−1.4M Share of the company7.980% SailingStone Capital Partners LLC's full portfolio →

Koch, Inc.

7.0M

% of company

16.76%

Change vs last qtr

Unchanged

Held since

2024

SailingStone Capital Partners LLC

3.4M

% of company

7.98%

Change vs last qtr

−1.5M (−30.6%)

Held since

2024

28 more super investors behind a free account

See every manager holding Compass Minerals International, Inc., how their position has changed, and how long they've held it.

Institutional Funds

Mutual funds and ETFs reporting CMP on Form N-PORT; together they hold 34.5% of the company

Fund	Position value	Shares	% of company	% of the fund	As of
VG Victory Global Energy Transition Fund Victory Portfolios	$60.8M	2.0M	4.65%	9.86%	June 30, 2026
AU Avantis U.S. Small Cap Value ETF American Century ETF Trust	$53.8M	1.7M	4.02%	0.20%	May 31, 2026

Victory Global Energy Transition Fund

Victory Portfolios

Position value

$60.8M

% of company

4.65%

% of the fund

9.86%

As of

June 30, 2026

Avantis U.S. Small Cap Value ETF

American Century ETF Trust

Position value

$53.8M

% of company

4.02%

% of the fund

0.20%

As of

May 31, 2026

23 more funds behind a free account

See every fund holding Compass Minerals International, Inc. and how much of the fund the position is.

Insiders and 5%+ holders

From Forms 3/4/5 and Schedules 13D/G

Holder	Shares	% of company	Change vs last qtr	8 quarters	Held since	% of their book
RJ Reece Joseph E Insider	118.4K	0.28%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.280% Reece Joseph E's insider activity →
WL Walker Lori A Insider	60.9K	0.15%	—	—	—	—
Insider holdings come from Form 3/4/5 filings, which are not quarterly. Share of the company0.150% Walker Lori A's insider activity →

Reece Joseph E

Insider

118.4K

% of company

0.28%

Change vs last qtr

—

Held since

—

Walker Lori A

Insider

60.9K

% of company

0.15%

Change vs last qtr

—

Held since

—

16 more holders behind a free account

See every insider and 5%+ holder of Compass Minerals International, Inc..

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