Flowserve Corporation
US ˙ NYSE ˙ US34354P1057

SecurityFLS / Flowserve Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership1,005,327 shares
Latest Disclosed Value $ 73,901,588
Northern Trust Corp reports 2.86% increase in ownership of FLS / Flowserve Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 1,005,327 shares of Flowserve Corporation (US:FLS) valued at $73,901,588 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 977,383 shares of Flowserve Corporation. This represents a change in shares of 2.86% during the quarter. The current value of the position is $75,821,762 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 FLOWSERVE COM 34354P105 1,005,327 27,944 2.86 73,902 8.98 0.0098
2026-02-17 2025-12-31 13F FLOWSERVE COM 34354P105 977,383 -48,439 -4.72 67,811 24.39 0.0086
2025-11-14 2025-09-30 13F FLOWSERVE COM 34354P105 1,025,822 -17,079 -1.64 54,512 -0.15 0.0070
2025-08-13 2025-06-30 13F FLOWSERVE COM 34354P105 1,042,901 -54,416 -4.96 54,596 1.87 0.0075
2025-05-13 2025-03-31 13F FLOWSERVE COM 34354P105 1,097,317 -28,420 -2.52 53,593 -17.23 0.0080
2025-02-14 2024-12-31 13F FLOWSERVE COM 34354P105 1,125,737 219,561 24.23 64,752 38.24 0.0092
2024-11-13 2024-09-30 13F FLOWSERVE COM 34354P105 906,176 -22,648 -2.44 46,840 4.84 0.0077
2024-08-14 2024-06-30 13F FLOWSERVE COM 34354P105 928,824 109,561 13.37 44,676 19.38 0.0075
2024-05-14 2024-03-31 13F FLOWSERVE COM 34354P105 819,263 -128,343 -13.54 37,424 -4.19 0.0065
2024-02-13 2023-12-31 13F FLOWSERVE COM 34354P105 947,606 93 0.01 39,060 3.66 0.0071
2023-11-13 2023-09-30 13F FLOWSERVE COM 34354P105 947,513 -18,149 -1.88 37,683 5.04 0.0073
2023-08-11 2023-06-30 13F FLOWSERVE COM 34354P105 965,662 -23,834 -2.41 35,874 6.63 0.0069
2023-05-15 2023-03-31 13F FLOWSERVE COM 34354P105 989,496 -1,198 -0.12 33,643 10.69 0.0067
2023-02-13 2022-12-31 13F FLOWSERVE COM 34354P105 990,694 1,683 0.17 30,394 26.47 0.0064
2022-11-14 2022-09-30 13F FLOWSERVE COM 34354P105 989,011 -4,629 -0.47 24,033 -15.52 0.0055
2022-08-12 2022-06-30 13F FLOWSERVE COM 34354P105 993,640 -26,590 -2.61 28,447 -22.33 0.0061
2022-05-13 2022-03-31 13F FLOWSERVE COM 34354P105 1,020,230 -21,490 -2.06 36,627 14.90 0.0064
2022-02-08 2021-12-31 13F FLOWSERVE COM 34354P105 1,041,720 -34,751 -3.23 31,876 -14.59 0.0052
2021-11-15 2021-09-30 13F FLOWSERVE COM 34354P105 1,076,471 -45,169 -4.03 37,322 -17.47 0.0066
2021-08-13 2021-06-30 13F FLOWSERVE COM 34354P105 1,121,640 -41,690 -3.58 45,225 0.17 0.0080
2021-05-12 2021-03-31 13F FLOWSERVE COM 34354P105 1,163,330 -76,252 -6.15 45,150 -1.16 0.0084
2021-02-11 2020-12-31 13F FLOWSERVE COM 34354P105 1,239,582 -45,144 -3.51 45,678 30.28 0.0089
2020-11-16 2020-09-30 13F FLOWSERVE COM 34354P105 1,284,726 18,482 1.46 35,061 -2.91 0.0077
2020-08-14 2020-06-30 13F FLOWSERVE COM 34354P105 1,266,244 -190,856 -13.10 36,112 3.74 0.0086
2020-05-14 2020-03-31 13F FLOWSERVE COM 34354P105 1,457,100 -10,817 -0.74 34,809 -52.35 0.0100
2020-02-14 2019-12-31 13F FLOWSERVE COM 34354P105 1,467,917 7,466 0.51 73,059 7.10 0.0164
2019-11-13 2019-09-30 13F FLOWSERVE COM 34354P105 1,460,451 -11,767 -0.80 68,217 -12.06 0.0163
2019-08-13 2019-06-30 13F FLOWSERVE COM 34354P105 1,472,218 10,249 0.70 77,571 17.54 0.0184
2019-05-13 2019-03-31 13F FLOWSERVE COM 34354P105 1,461,969 11,915 0.82 65,994 19.70 0.0163
2019-02-12 2018-12-31 13F FLOWSERVE COM 34354P105 1,450,054 46,145 3.29 55,132 -28.19 0.0155
2018-11-14 2018-09-30 13F FLOWSERVE COM 34354P105 1,403,909 -11,203 -0.79 76,779 34.30 0.0188
2018-09-18 2018-06-30 13F/A-1 FLOWSERVE COM 34354P105 1,415,112 -19,239 -1.34 57,171 -8.01 0.0145
2018-08-14 2018-06-30 13F FLOWSERVE COM 34354P105 1,423,655 -10,696 57,516
2018-05-09 2018-03-31 13F FLOWSERVE COM 34354P105 1,434,351 -22,082 -1.52 62,152 1.29 0.0162
2018-02-14 2017-12-31 13F FLOWSERVE COM 34354P105 1,456,433 -22,432 -1.52 61,359 -2.58 0.0155
2017-11-13 2017-09-30 13F FLOWSERVE COM 34354P105 1,478,865 72,904 5.19 62,984 -3.52 0.0164
2017-08-11 2017-06-30 13F FLOWSERVE COM 34354P105 1,405,961 -36,287 -2.52 65,279 -6.52 0.0183
2017-05-12 2017-03-31 13F FLOWSERVE COM 34354P105 1,442,248 39,991 2.85 69,834 3.65 0.0201
2017-02-13 2016-12-31 13F FLOWSERVE COM 34354P105 1,402,257 -33,653 -2.34 67,378 -2.73 0.0207
2016-11-09 2016-09-30 13F FLOWSERVE COM 34354P105 1,435,910 5,200 0.36 69,268 7.18 0.0216
2016-08-12 2016-06-30 13F FLOWSERVE COM 34354P105 1,430,710 8,186 0.58 64,625 2.71 0.0210
2016-08-19 2016-03-31 13F/A-1 FLOWSERVE COM 34354P105 1,422,524 -24,839 -1.72 62,922 3.31 0.0209
2016-05-13 2016-03-31 13F Flowserve COMM 34354P105 1,422,516 63,173
2016-02-12 2015-12-31 13F Flowserve COMM 34354P105 1,447,363 -110,202 -7.08 60,905 -4.95 0.0202
2015-11-12 2015-09-30 13F Flowserve COMM 34354P105 1,557,565 31,090 2.04 64,078 -20.29 0.0214
2015-08-13 2015-06-30 13F FLOWSERVE COM 34354P105 1,526,475 -91,678 -5.67 80,384 -12.06 0.0545
2015-08-13 2015-06-30 13F Flowserve COMM 034354P10 78,779 -1,539,374 4,148 0.0028
2015-05-14 2015-03-31 13F Flowserve COMM 34354P105 1,618,153 -116,998 -6.74 91,410 -11.95 0.0275
2015-02-12 2014-12-31 13F Flowserve COM 34354P105 1,735,151 81,006 4.90 103,814 -11.00 0.0313
2014-11-13 2014-09-30 13F Flowserve COMM 34354P105 1,654,145 -45,033 -2.65 116,649 -7.67 0.0366
2014-08-14 2014-06-30 13F FLOWSERVE com 34354P105 1,699,178 -41,020 -2.36 126,334 -7.33 0.0394
2014-05-14 2014-03-31 13F FLOWSERVE COMM 34354P105 1,740,198 -41,675 -2.34 136,327 -2.95 0.0429
2014-02-21 2013-12-31 13F/A-1 FLOWSERVE COM 34354P105 1,781,873 -39,436 -2.17 140,465 23.62 0.0450
2014-02-12 2013-12-31 13F FLOWSERVE COM 34354P105 1,781,873 140,465
2013-11-13 2013-09-30 13F FLOWSERVE COM 34354P105 1,821,309 -124,731 -6.41 113,631 8.11 0.0400
2013-08-09 2013-06-30 13F FLOWSERVE COM 34354P105 1,946,040 1,946,040 105,106 0.0381
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.