Donaldson Company, Inc.
US ˙ NYSE ˙ US2576511099

SecurityDCI / Donaldson Company, Inc.
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,156,473 shares
Latest Disclosed Value $ 98,149,864
Northern Trust Corp reports 1.41% increase in ownership of DCI / Donaldson Company, Inc.

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,156,473 shares of Donaldson Company, Inc. (US:DCI) valued at $98,149,864 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 1,140,411 shares of Donaldson Company, Inc.. This represents a change in shares of 1.41% during the quarter. The current value of the position is $97,201,556 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 DONALDSON COM 257651109 1,156,473 16,062 1.41 98,150 -2.93 0.0027
2026-02-17 2025-12-31 13F DONALDSON COM 257651109 1,140,411 -47,533 -4.00 101,109 3.99 0.0027
2025-11-14 2025-09-30 13F DONALDSON COM 257651109 1,187,944 29,822 2.58 97,233 21.06 0.0028
2025-08-13 2025-06-30 13F DONALDSON COM 257651109 1,158,122 -14,127 -1.21 80,316 2.17 0.0110
2025-05-13 2025-03-31 13F DONALDSON COM 257651109 1,172,249 -25,924 -2.16 78,611 -2.58 0.0117
2025-02-14 2024-12-31 13F DONALDSON COM 257651109 1,198,173 145,275 13.80 80,697 3.99 0.0114
2024-11-13 2024-09-30 13F DONALDSON COM 257651109 1,052,898 -17,077 -1.60 77,599 1.35 0.0127
2024-08-14 2024-06-30 13F DONALDSON COM 257651109 1,069,975 102,487 10.59 76,567 5.97 0.0129
2024-05-14 2024-03-31 13F DONALDSON COM 257651109 967,488 -120,234 -11.05 72,252 1.65 0.0125
2024-02-13 2023-12-31 13F DONALDSON COM 257651109 1,087,722 62,065 6.05 71,083 16.20 0.0129
2023-11-13 2023-09-30 13F DONALDSON COM 257651109 1,025,657 -11,332 -1.09 61,170 -5.63 0.0118
2023-08-11 2023-06-30 13F DONALDSON COM 257651109 1,036,989 59,629 6.10 64,822 1.51 0.0125
2023-05-15 2023-03-31 13F DONALDSON COM 257651109 977,360 13,920 1.44 63,861 12.59 0.0127
2023-02-13 2022-12-31 13F DONALDSON COM 257651109 963,440 -4,984 -0.51 56,718 19.50 0.0119
2022-11-14 2022-09-30 13F DONALDSON COM 257651109 968,424 -14,729 -1.50 47,463 0.28 0.0108
2022-08-12 2022-06-30 13F DONALDSON COM 257651109 983,153 -67,623 -6.44 47,329 -13.26 0.0101
2022-05-13 2022-03-31 13F DONALDSON COM 257651109 1,050,776 -18,582 -1.74 54,566 -13.89 0.0096
2022-02-08 2021-12-31 13F DONALDSON COM 257651109 1,069,358 -22,345 -2.05 63,370 1.11 0.0104
2021-11-15 2021-09-30 13F DONALDSON COM 257651109 1,091,703 72,359 7.10 62,674 -3.22 0.0111
2021-08-13 2021-06-30 13F DONALDSON COM 257651109 1,019,344 -33,309 -3.16 64,759 5.78 0.0114
2021-05-12 2021-03-31 13F DONALDSON COM 257651109 1,052,653 58,047 5.84 61,222 10.15 0.0114
2021-02-11 2020-12-31 13F DONALDSON COM 257651109 994,606 -6,447 -0.64 55,579 19.60 0.0108
2020-11-16 2020-09-30 13F DONALDSON COM 257651109 1,001,053 -34,610 -3.34 46,469 -3.55 0.0102
2020-08-14 2020-06-30 13F DONALDSON COM 257651109 1,035,663 -23,812 -2.25 48,180 17.72 0.0114
2020-05-14 2020-03-31 13F DONALDSON COM 257651109 1,059,475 36,822 3.60 40,927 -30.54 0.0117
2020-02-14 2019-12-31 13F DONALDSON COM 257651109 1,022,653 -9,481 -0.92 58,925 9.62 0.0132
2019-11-13 2019-09-30 13F DONALDSON COM 257651109 1,032,134 2,858 0.28 53,753 2.68 0.0129
2019-08-13 2019-06-30 13F DONALDSON COM 257651109 1,029,276 129,846 14.44 52,349 16.27 0.0124
2019-05-13 2019-03-31 13F DONALDSON COM 257651109 899,430 30,976 3.57 45,025 19.49 0.0111
2019-02-12 2018-12-31 13F DONALDSON COM 257651109 868,454 -9,674 -1.10 37,681 -26.35 0.0106
2018-11-14 2018-09-30 13F DONALDSON COM 257651109 878,128 -9,186 -1.04 51,160 27.79 0.0125
2018-09-18 2018-06-30 13F/A-1 DONALDSON COM 257651109 887,314 16,970 1.95 40,035 2.11 0.0102
2018-08-14 2018-06-30 13F DONALDSON COM 257651109 895,826 25,482 40,419
2018-05-09 2018-03-31 13F DONALDSON COM 257651109 870,344 2,821 0.33 39,209 -7.67 0.0102
2018-02-14 2017-12-31 13F DONALDSON COM 257651109 867,523 -65,357 -7.01 42,465 -0.91 0.0108
2017-11-13 2017-09-30 13F DONALDSON COM 257651109 932,880 -29,059 -3.02 42,857 -2.17 0.0112
2017-08-11 2017-06-30 13F DONALDSON COM 257651109 961,939 17,643 1.87 43,806 1.91 0.0122
2017-05-12 2017-03-31 13F DONALDSON COM 257651109 944,296 -115,092 -10.86 42,984 -3.58 0.0124
2017-02-13 2016-12-31 13F DONALDSON COM 257651109 1,059,388 -208,488 -16.44 44,580 -5.81 0.0137
2016-11-09 2016-09-30 13F DONALDSON COM 257651109 1,267,876 54,089 4.46 47,330 13.48 0.0147
2016-08-12 2016-06-30 13F DONALDSON COM 257651109 1,213,787 -5,761 -0.47 41,706 10.21 0.0135
2016-08-19 2016-03-31 13F/A-1 DONALDSON COM 257651109 1,219,548 29,381 2.47 37,844 10.95 0.0126
2016-05-13 2016-03-31 13F Donaldson COMM 257651109 1,219,541 38,915
2016-02-12 2015-12-31 13F Donaldson COMM 257651109 1,190,167 -5,049 -0.42 34,110 1.64 0.0113
2015-11-12 2015-09-30 13F Donaldson COMM 257651109 1,195,216 219,633 22.51 33,561 -3.91 0.0112
2015-08-13 2015-06-30 13F DONALDSON COM 257651109 975,583 -105,800 -9.78 34,926 -14.35 0.0237
2015-05-14 2015-03-31 13F Donaldson COMM 257651109 1,081,383 -3,362 -0.31 40,779 -2.68 0.0123
2015-02-12 2014-12-31 13F Donaldson COM 257651109 1,084,745 -15,834 -1.44 41,903 -6.29 0.0127
2014-11-13 2014-09-30 13F Donaldson COMM 257651109 1,100,579 -34,042 -3.00 44,716 -6.87 0.0140
2014-08-14 2014-06-30 13F DONALDSON com 257651109 1,134,621 -16,053 -1.40 48,016 -1.58 0.0150
2014-05-14 2014-03-31 13F DONALDSON COMM 257651109 1,150,674 8,915 0.78 48,788 -1.68 0.0153
2014-02-21 2013-12-31 13F/A-1 DONALDSON COM 257651109 1,141,759 -1,064 -0.09 49,621 13.87 0.0159
2014-02-12 2013-12-31 13F DONALDSON COM 257651109 1,141,759 49,621
2013-11-13 2013-09-30 13F DONALDSON COM 257651109 1,142,823 -12,936 -1.12 43,576 5.73 0.0153
2013-08-09 2013-06-30 13F DONALDSON COM 257651109 1,155,759 1,155,759 41,214 0.0149
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.