STERIS plc
US ˙ NYSE

SecuritySTE / STERIS plc
InstitutionNorthwestern Mutual Wealth Management Co
Latest Disclosed Ownership3,586 shares
Latest Disclosed Value $ 792,969
Northwestern Mutual Wealth Management Co reports 6.92% increase in ownership of STE / STERIS plc

On May 7, 2026 - Northwestern Mutual Wealth Management Co filed a 13F-HR form disclosing ownership of 3,586 shares of STERIS plc (US:STE) valued at $792,972 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on February 10, 2026 disclosing 3,354 shares of STERIS plc. This represents a change in shares of 6.92% during the quarter. The current value of the position is $761,487 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 STERIS SHS USD G8473T100 3,586 232 6.92 793 -6.82 0.0005
2026-02-10 2025-12-31 13F/A-1 STERIS SHS USD G8473T100 3,354 1,093 48.34 850 52.06 0.0005
2026-02-05 2025-12-31 13F STERIS SHS USD G8473T100 73,547 71,286 1,317 0.0008
2025-11-14 2025-09-30 13F STERIS SHS USD G8473T100 2,261 53 2.40 560 5.47 0.0004
2025-08-13 2025-06-30 13F STERIS SHS USD G8473T100 2,208 -25 -1.12 530 4.74 0.0004
2025-05-14 2025-03-31 13F STERIS SHS USD G8473T100 2,233 274 13.99 506 25.87 0.0004
2025-02-11 2024-12-31 13F STERIS SHS USD G8473T100 1,959 1 0.05 403 -15.19 0.0003
2024-11-12 2024-09-30 13F STERIS SHS USD G8473T100 1,958 -82 -4.02 475 6.04 0.0004
2024-08-16 2024-06-30 13F STERIS SHS USD G8473T100 2,040 144 7.59 448 4.93 0.0004
2024-05-15 2024-03-31 13F STERIS SHS USD G8473T100 1,896 -8 -0.42 426 1.91 0.0004
2024-02-13 2023-12-31 13F STERIS SHS USD G8473T100 1,904 105 5.84 419 6.09 0.0005
2023-11-14 2023-09-30 13F STERIS SHS USD G8473T100 1,799 -1,799 -50.00 395 -51.30 0.0005
2023-08-14 2023-06-30 13F STERIS SHS USD G8473T100 3,598 1,903 112.27 809 149.69 0.0010
2023-05-15 2023-03-31 13F STERIS SHS USD G8473T100 1,695 -39 -2.25 324 1.25 0.0005
2023-02-21 2022-12-31 13F STERIS SHS USD G8473T100 1,734 -1,123 -39.31 320 -32.49 0.0005
2022-11-14 2022-09-30 13F STERIS SHS USD G8473T100 2,857 495 20.96 474 -2.67 0.0008
2022-08-04 2022-06-30 13F STERIS SHS USD G8473T100 2,362 104 4.61 487 -10.81 0.0008
2022-05-09 2022-03-31 13F STERIS SHS USD G8473T100 2,258 -68 -2.92 546 -3.53 0.0009
2022-02-03 2021-12-31 13F STERIS SHS USD G8473T100 2,326 329 16.47 566 38.39 0.0009
2021-11-15 2021-09-30 13F STERIS SHS USD G8473T100 1,997 -28 -1.38 409 -2.15 0.0007
2021-08-13 2021-06-30 13F STERIS SHS USD G8473T100 2,025 -204 -9.15 418 -1.42 0.0008
2021-05-14 2021-03-31 13F STERIS SHS USD G8473T100 2,229 375 20.23 424 20.45 0.0009
2021-02-12 2020-12-31 13F STERIS SHS USD G8473T100 1,854 0 0.00 352 7.65 0.0008
2020-11-13 2020-09-30 13F STERIS SHS USD G8473T100 1,854 38 2.09 327 17.63 0.0009
2020-08-14 2020-06-30 13F STERIS SHS USD G8473T100 1,816 -4 -0.22 278 9.02 0.0009
2020-05-08 2020-03-31 13F STERIS SHS USD G8473T100 1,820 106 6.18 255 -2.30 0.0010
2020-02-13 2019-12-31 13F STERIS SHS USD G8473T100 1,714 -112 -6.13 261 -1.14 0.0009
2019-11-12 2019-09-30 13F STERIS SHS USD G8473T100 1,826 -106 -5.49 264 -8.33 0.0010
2019-08-12 2019-06-30 13F STERIS SHS USD G8473T100 1,932 71 3.82 288 21.01 0.0012
2019-05-10 2019-03-31 13F STERIS SHS USD G8473T100 1,861 198 11.91 238 33.71 0.0010
2019-02-12 2018-12-31 13F STERIS SHS USD G84720104 1,663 46 2.84 178 -3.78 0.0009
2018-11-01 2018-09-30 13F STERIS SHS USD G84720104 1,617 117 7.80 185 17.09 0.0009
2018-08-10 2018-06-30 13F STERIS SHS USD G84720104 1,500 -9 -0.60 158 12.06 0.0009
2018-05-14 2018-03-31 13F STERIS SHS USD G84720104 1,509 -36 -2.33 141 4.44 0.0009
2018-01-31 2017-12-31 13F STERIS SHS USD G84720104 1,545 -1 -0.06 135 -1.46 0.0009
2017-11-07 2017-09-30 13F STERIS SHS USD G84720104 1,546 -202 -11.56 137 -3.52 0.0010
2017-08-10 2017-06-30 13F STERIS SHS USD G84720104 1,748 -19 -1.08 142 15.45 0.0011
2017-05-09 2017-03-31 13F STERIS SHS USD G84720104 1,767 -3,345 -65.43 123 -64.35 0.0011
2017-02-15 2016-12-31 13F STERIS SHS USD G84720104 5,112 -36 -0.70 345 -8.49 0.0037
2016-11-14 2016-09-30 13F STERIS SHS USD G84720104 5,148 32 0.63 377 7.10 0.0058
2016-08-29 2016-06-30 13F STERIS SHS USD G84720104 5,116 0 0.00 352 -3.03 0.0050
2016-05-16 2016-03-31 13F STERIS SHS USD G84720104 5,116 116 2.32 363 -3.71 0.0059
2016-02-16 2015-12-31 13F STERIS SHS USD G84720104 5,000 -130 -2.53 377 13.21 0.0075
2015-11-16 2015-09-30 13F STERIS COM 859152100 5,130 129 2.58 333 3.42 0.0079
2015-09-30 2015-06-30 13F/A-1 STERIS COM 859152100 5,001 5,001 0.00 322 0.0084
2015-05-15 2015-03-31 13F STERIS COM 859152100 0 -255 -100.00 0 -100.00
2015-02-13 2014-12-31 13F STERIS COM 859152100 255 255 -98.90 17 -98.28 0.0005
2013-11-14 2013-09-30 13F STERIS COM 859152100 0 -23,090 -100.00 0 -100.00
2013-08-14 2013-06-30 13F STERIS COM 859152100 23,090 23,090 990 0.0109
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.