Compass Minerals International, Inc.
US ˙ NYSE ˙ US20451N1019

SecurityCMP / Compass Minerals International, Inc.
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership8,240 shares
Latest Disclosed Value $ 192,404
Northwestern Mutual Wealth Management Co reports 59.67% decrease in ownership of CMP / Compass Minerals International, Inc.

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 8,240 shares of Compass Minerals International, Inc. (US:CMP) valued at $192,404 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 20,431 shares of Compass Minerals International, Inc.. This represents a change in shares of -59.67% during the quarter. The current value of the position is $268,954 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)
2026-05-07 2026-03-31 13F COMPASS MINERALS INTL COM 20451N101 8,240 -12,191 -59.67 192 -52.12 0.0001
2026-02-10 2025-12-31 13F/A-1 COMPASS MINERALS INTL COM 20451N101 20,431 3,843 23.17 401 26.10 0.0003
2026-02-05 2025-12-31 13F COMPASS MINERALS INTL COM 20451N101 776,303 759,715 35,777 0.0226
2025-11-14 2025-09-30 13F COMPASS MINERALS INTL COM 20451N101 16,588 -3,338 -16.75 318 -20.50 0.0002
2025-08-13 2025-06-30 13F COMPASS MINERALS INTL COM 20451N101 19,926 -20,602 -50.83 400 6.38 0.0003
2025-05-14 2025-03-31 13F COMPASS MINERALS INTL COM 20451N101 40,528 -5,328 -11.62 377 -26.99 0.0003
2025-02-11 2024-12-31 13F COMPASS MINERALS INTL COM 20451N101 45,856 12,641 38.06 516 29.07 0.0004
2024-11-12 2024-09-30 13F COMPASS MINERALS INTL COM 20451N101 33,215 19,865 148.80 399 191.24 0.0004
2024-08-16 2024-06-30 13F COMPASS MINERALS INTL COM 20451N101 13,350 8,024 150.66 138 65.06 0.0001
2024-05-15 2024-03-31 13F COMPASS MINERALS INTL COM 20451N101 5,326 3,295 162.24 84 62.75 0.0001
2024-02-13 2023-12-31 13F COMPASS MINERALS INTL COM 20451N101 2,031 761 59.92 51 45.71 0.0001
2023-11-14 2023-09-30 13F COMPASS MINERALS INTL COM 20451N101 1,270 -86 -6.34 35 -23.91 0.0000
2023-08-14 2023-06-30 13F COMPASS MINERALS INTL COM 20451N101 1,356 -476 -25.98 46 -25.81 0.0001
2023-05-15 2023-03-31 13F COMPASS MINERALS INTL COM 20451N101 1,832 607 49.55 63 24.00 0.0001
2023-02-21 2022-12-31 13F COMPASS MINERALS INTL COM 20451N101 1,225 -383 -23.82 50 -20.63 0.0001
2022-11-14 2022-09-30 13F COMPASS MINERALS INTL COM 20451N101 1,608 -126 -7.27 63 3.28 0.0001
2022-08-04 2022-06-30 13F COMPASS MINERALS INTL COM 20451N101 1,734 -142 -7.57 61 -48.74 0.0001
2022-05-09 2022-03-31 13F COMPASS MINERALS INTL COM 20451N101 1,876 -408 -17.86 119 1.71 0.0002
2022-02-03 2021-12-31 13F COMPASS MINERALS INTL COM 20451N101 2,284 434 23.46 117 -1.68 0.0002
2021-11-15 2021-09-30 13F COMPASS MINERALS INTL COM 20451N101 1,850 4 0.22 119 8.18 0.0002
2021-08-13 2021-06-30 13F COMPASS MINERALS INTL COM 20451N101 1,846 330 21.77 110 15.79 0.0002
2021-05-14 2021-03-31 13F COMPASS MINERALS INTL COM 20451N101 1,516 -1,298 -46.13 95 -45.40 0.0002
2021-02-12 2020-12-31 13F COMPASS MINERALS INTL COM 20451N101 2,814 1,810 180.28 174 190.00 0.0004
2020-11-13 2020-09-30 13F COMPASS MINERALS INTL COM 20451N101 1,004 215 27.25 60 57.89 0.0002
2020-08-14 2020-06-30 13F COMPASS MINERALS INTL COM 20451N101 789 20 2.60 38 26.67 0.0001
2020-05-08 2020-03-31 13F COMPASS MINERALS INTL COM 20451N101 769 147 23.63 30 -21.05 0.0001
2020-02-13 2019-12-31 13F COMPASS MINERALS INTL COM 20451N101 622 136 27.98 38 40.74 0.0001
2019-11-12 2019-09-30 13F COMPASS MINERALS INTL COM 20451N101 486 -453 -48.24 27 -47.06 0.0001
2019-08-12 2019-06-30 13F COMPASS MINERALS INTL COM 20451N101 939 -490 -34.29 51 -34.62 0.0002
2019-05-10 2019-03-31 13F COMPASS MINERALS INTL COM 20451N101 1,429 -11 -0.76 78 30.00 0.0003
2019-02-12 2018-12-31 13F COMPASS MINERALS INTL COM 20451N101 1,440 -1,840 -56.10 60 -72.73 0.0003
2018-11-01 2018-09-30 13F COMPASS MINERALS INTL COM 20451N101 3,280 -1,267 -27.86 220 -26.42 0.0011
2018-08-10 2018-06-30 13F COMPASS MINERALS INTL COM 20451N101 4,547 -1,165 -20.40 299 -13.08 0.0017
2018-05-14 2018-03-31 13F COMPASS MINERALS INTL COM 20451N101 5,712 -6,173 -51.94 344 -59.95 0.0021
2018-01-31 2017-12-31 13F COMPASS MINERALS INTL COM 20451N101 11,885 196 1.68 859 13.18 0.0055
2017-11-07 2017-09-30 13F COMPASS MINERALS INTL COM 20451N101 11,689 -450 -3.71 759 -4.29 0.0054
2017-08-10 2017-06-30 13F COMPASS MINERALS INTL COM 20451N101 12,139 778 6.85 793 2.99 0.0064
2017-05-09 2017-03-31 13F COMPASS MINERALS INTL COM 20451N101 11,361 465 4.27 770 -9.73 0.0070
2017-02-15 2016-12-31 13F COMPASS MINERALS INTL COM 20451N101 10,896 1,625 17.53 853 24.89 0.0093
2016-11-14 2016-09-30 13F COMPASS MINERALS INTL COM 20451N101 9,271 2,066 28.67 683 27.66 0.0105
2016-08-29 2016-06-30 13F COMPASS MINERALS INTL COM 20451N101 7,205 431 6.36 535 11.46 0.0077
2016-05-16 2016-03-31 13F COMPASS MINERALS INTL COM 20451N101 6,774 473 7.51 480 1.27 0.0078
2016-02-16 2015-12-31 13F COMPASS MINERALS INTL COM 20451N101 6,301 1,708 37.19 474 31.67 0.0095
2015-11-16 2015-09-30 13F COMPASS MINERALS INTL COM 20451N101 4,593 1,247 37.27 360 30.91 0.0086
2015-09-30 2015-06-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 3,346 508 17.90 275 3.77 0.0071
2015-08-14 2015-06-30 13F COMPASS MINERALS INTL COM 20451N101 2,838 265
2015-05-15 2015-03-31 13F COMPASS MINERALS INTL COM 20451N101 2,838 834 41.62 265 52.30 0.0074
2015-02-13 2014-12-31 13F COMPASS MINERALS INTL COM 20451N101 2,004 1,493 292.17 174 304.65 0.0054
2014-11-14 2014-09-30 13F COMPASS MINERALS INTL COM 20451N101 511 459 882.69 43 760.00 0.0015
2014-08-05 2014-06-30 13F COMPASS MINERALS INTL COM 20451N101 52 -71 -57.72 5 -50.00 0.0002
2014-05-15 2014-03-31 13F COMPASS MINERALS INTL COM 20451N101 123 71 136.54 10 150.00 0.0004
2014-02-14 2013-12-31 13F COMPASS MINERALS INTL COM 20451N101 52 0 0.00 4 0.00 0.0002
2013-11-14 2013-09-30 13F COMPASS MINERALS INTL COM 20451N101 52 0 0.00 4 0.00 0.0002
2013-08-21 2013-06-30 13F/A-1 COMPASS MINERALS INTL COM 20451N101 52 52 4 0.0002
2013-08-14 2013-06-30 13F COMPASS MINERALS INTL COM 20451N101 19,560 1,653 0.0182
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.