Compass Minerals International, Inc.
US ˙ NYSE ˙ US20451N1019

SecurityCMP / Compass Minerals International, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership289,482 shares
Latest Disclosed Value $ 6,759,404
Northern Trust Corp reports 3.45% decrease in ownership of CMP / Compass Minerals International, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 289,482 shares of Compass Minerals International, Inc. (US:CMP) valued at $6,759,405 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 299,821 shares of Compass Minerals International, Inc.. This represents a change in shares of -3.45% during the quarter. The current value of the position is $9,448,692 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-14 2026-03-31 13F COMPASS MINERALS INTL COM 20451N101 289,482 -10,339 -3.45 6,759 14.79 0.0002
2026-02-17 2025-12-31 13F COMPASS MINERALS INTL COM 20451N101 299,821 -14,233 -4.53 5,888 -2.34 0.0008
2025-11-14 2025-09-30 13F COMPASS MINERALS INTL COM 20451N101 314,054 -1,456 -0.46 6,030 -4.88 0.0008
2025-08-13 2025-06-30 13F COMPASS MINERALS INTL COM 20451N101 315,510 -111 -0.04 6,339 116.17 0.0009
2025-05-13 2025-03-31 13F COMPASS MINERALS INTL COM 20451N101 315,621 -5,964 -1.85 2,932 -18.94 0.0004
2025-02-14 2024-12-31 13F COMPASS MINERALS INTL COM 20451N101 321,585 8,898 2.85 3,618 -3.75 0.0005
2024-11-13 2024-09-30 13F COMPASS MINERALS INTL COM 20451N101 312,687 -39,548 -11.23 3,758 3.30 0.0006
2024-08-14 2024-06-30 13F COMPASS MINERALS INTL COM 20451N101 352,235 11,006 3.23 3,639 -32.25 0.0006
2024-05-14 2024-03-31 13F COMPASS MINERALS INTL COM 20451N101 341,229 -96,815 -22.10 5,371 -51.58 0.0009
2024-02-13 2023-12-31 13F COMPASS MINERALS INTL COM 20451N101 438,044 -56,759 -11.47 11,091 -19.80 0.0020
2023-11-13 2023-09-30 13F COMPASS MINERALS INTL COM 20451N101 494,803 -1,055 -0.21 13,830 -17.97 0.0027
2023-08-11 2023-06-30 13F COMPASS MINERALS INTL COM 20451N101 495,858 -50,682 -9.27 16,859 -10.04 0.0032
2023-05-15 2023-03-31 13F COMPASS MINERALS INTL COM 20451N101 546,540 11,256 2.10 18,741 -14.61 0.0037
2023-02-13 2022-12-31 13F COMPASS MINERALS INTL COM 20451N101 535,284 58,233 12.21 21,947 19.40 0.0046
2022-11-14 2022-09-30 13F COMPASS MINERALS INTL COM 20451N101 477,051 -8,545 -1.76 18,381 6.95 0.0042
2022-08-12 2022-06-30 13F COMPASS MINERALS INTL COM 20451N101 485,596 -18,695 -3.71 17,186 -45.73 0.0037
2022-05-13 2022-03-31 13F COMPASS MINERALS INTL COM 20451N101 504,291 -78,272 -13.44 31,665 6.41 0.0056
2022-02-08 2021-12-31 13F COMPASS MINERALS INTL COM 20451N101 582,563 14,157 2.49 29,758 -18.71 0.0049
2021-11-15 2021-09-30 13F COMPASS MINERALS INTL COM 20451N101 568,406 -7,949 -1.38 36,605 7.18 0.0065
2021-08-13 2021-06-30 13F COMPASS MINERALS INTL COM 20451N101 576,355 -796 -0.14 34,154 -5.65 0.0060
2021-05-12 2021-03-31 13F COMPASS MINERALS INTL COM 20451N101 577,151 2,006 0.35 36,198 1.97 0.0067
2021-02-11 2020-12-31 13F COMPASS MINERALS INTL COM 20451N101 575,145 -6,719 -1.15 35,498 2.79 0.0069
2020-11-16 2020-09-30 13F COMPASS MINERALS INTL COM 20451N101 581,864 -29,253 -4.79 34,533 15.92 0.0076
2020-08-14 2020-06-30 13F COMPASS MINERALS INTL COM 20451N101 611,117 35,403 6.15 29,791 34.51 0.0071
2020-05-14 2020-03-31 13F COMPASS MINERALS INTL COM 20451N101 575,714 6,913 1.22 22,147 -36.13 0.0064
2020-02-14 2019-12-31 13F COMPASS MINERALS INTL COM 20451N101 568,801 -3,734 -0.65 34,673 7.21 0.0078
2019-11-13 2019-09-30 13F COMPASS MINERALS INTL COM 20451N101 572,535 18,030 3.25 32,341 6.14 0.0077
2019-08-13 2019-06-30 13F COMPASS MINERALS INTL COM 20451N101 554,505 10,054 1.85 30,471 2.94 0.0072
2019-05-13 2019-03-31 13F COMPASS MINERALS INTL COM 20451N101 544,451 14,814 2.80 29,601 34.06 0.0073
2019-02-12 2018-12-31 13F COMPASS MINERALS INTL COM 20451N101 529,637 5,618 1.07 22,080 -37.30 0.0062
2018-11-14 2018-09-30 13F COMPASS MINERALS INTL COM 20451N101 524,019 11,847 2.31 35,215 4.57 0.0086
2018-09-18 2018-06-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 512,172 -22,610 -4.23 33,675 4.43 0.0086
2018-08-14 2018-06-30 13F COMPASS MINERALS INTL COM 20451N101 514,379 -20,403 33,820
2018-05-09 2018-03-31 13F COMPASS MINERALS INTL COM 20451N101 534,782 -742 -0.14 32,247 -16.66 0.0084
2018-02-14 2017-12-31 13F COMPASS MINERALS INTL COM 20451N101 535,524 -20,560 -3.70 38,691 7.21 0.0098
2017-11-13 2017-09-30 13F COMPASS MINERALS INTL COM 20451N101 556,084 246,234 79.47 36,090 78.38 0.0094
2017-08-11 2017-06-30 13F COMPASS MINERALS INTL COM 20451N101 309,850 -4,222 -1.34 20,232 -5.05 0.0057
2017-05-12 2017-03-31 13F COMPASS MINERALS INTL COM 20451N101 314,072 6,356 2.07 21,309 -11.61 0.0061
2017-02-13 2016-12-31 13F COMPASS MINERALS INTL COM 20451N101 307,716 -64,301 -17.28 24,109 -12.07 0.0074
2016-11-09 2016-09-30 13F COMPASS MINERALS INTL COM 20451N101 372,017 -7,473 -1.97 27,417 -2.61 0.0085
2016-08-12 2016-06-30 13F COMPASS MINERALS INTL COM 20451N101 379,490 3,552 0.94 28,153 2.77 0.0091
2016-08-19 2016-03-31 13F/A-1 COMPASS MINERALS INTL COM 20451N101 375,938 -13,660 -3.51 27,393 -6.59 0.0091
2016-05-13 2016-03-31 13F Compass Minerals Int COMM 20451N101 375,938 26,638
2016-02-12 2015-12-31 13F Compass Minerals Int COMM 20451N101 389,598 -10,424 -2.61 29,326 -6.46 0.0097
2015-11-12 2015-09-30 13F COMPASS MINERALS INTL COM 20451N101 400,022 125,346 45.63 31,350 38.95 0.0105
2015-08-13 2015-06-30 13F COMPASS MINERALS INTL COM 20451N101 274,676 -54,631 -16.59 22,562 -26.50 0.0153
2015-08-13 2015-06-30 13F Compass Minerals Int COMM 020451N10 54,918 -274,389 4,511 0.0031
2015-05-14 2015-03-31 13F Compass Minerals Int COMM 20451N101 329,307 8,924 2.79 30,695 10.34 0.0092
2015-02-12 2014-12-31 13F Compass Minerals Int COM 20451N101 320,383 18,361 6.08 27,819 9.29 0.0084
2014-11-13 2014-09-30 13F Compass Minerals Int COMM 20451N101 302,022 18,701 6.60 25,455 -6.16 0.0080
2014-08-14 2014-06-30 13F COMPASS MINERALS INTL com 20451N101 283,321 -17,699 -5.88 27,125 9.20 0.0085
2014-05-14 2014-03-31 13F COMPASS MINERALS INTL COMM 20451N101 301,020 27,704 10.14 24,840 13.53 0.0078
2014-02-21 2013-12-31 13F/A-1 COMPASS MINERALS INTL COM 20451N101 273,316 939 0.34 21,879 5.31 0.0070
2014-02-12 2013-12-31 13F COMPASS MINERALS INTL COM 20451N101 273,316 21,879
2013-11-13 2013-09-30 13F COMPASS MINERALS INTL COM 20451N101 272,377 -6,836 -2.45 20,775 -11.98 0.0073
2013-08-09 2013-06-30 13F COMPASS MINERALS INTL COM 20451N101 279,213 279,213 23,602 0.0086
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.