Tenaris S.A. - Depositary Receipt (Common Stock)
US ˙ NYSE ˙ US88031M1099

SecurityTS / Tenaris S.A. - Depositary Receipt (Common Stock)
InstitutionNorthern Trust Corp
Latest Disclosed Ownership217,898 shares
Latest Disclosed Value $ 12,677,306
Northern Trust Corp reports 3.17% decrease in ownership of TS / Tenaris S.A. - Depositary Receipt (Common Stock)

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 217,898 shares of Tenaris S.A. - Depositary Receipt (Common Stock) (US:TS) valued at $12,677,306 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 225,021 shares of Tenaris S.A. - Depositary Receipt (Common Stock). This represents a change in shares of -3.17% during the quarter. The current value of the position is $13,949,830 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 TENARIS S A SPONSORED ADS 88031M109 217,898 -7,123 -3.17 12,677 46.52 0.0003
2026-02-17 2025-12-31 13F TENARIS S A SPONSORED ADS 88031M109 225,021 -5,035 -2.19 8,652 5.14 0.0002
2025-11-14 2025-09-30 13F TENARIS S A SPONSORED ADS 88031M109 230,056 -592 -0.26 8,229 -4.60 0.0002
2025-08-13 2025-06-30 13F TENARIS S A SPONSORED ADS 88031M109 230,648 -231,894 -50.13 8,626 -52.32 0.0012
2025-05-13 2025-03-31 13F TENARIS S A SPONSORED ADS 88031M109 462,542 241,853 109.59 18,090 116.93 0.0027
2025-02-14 2024-12-31 13F TENARIS S A SPONSORED ADS 88031M109 220,689 -88,259 -28.57 8,340 -15.09 0.0012
2024-11-13 2024-09-30 13F TENARIS S A COM 88031M109 308,948 8,223 2.73 9,821 7.01 0.0016
2024-08-14 2024-06-30 13F TENARIS S A COM 88031M109 300,725 206,903 220.53 9,178 149.13 0.0015
2024-05-14 2024-03-31 13F TENARIS S A COM 88031M109 93,822 -128,920 -57.88 3,684 -52.42 0.0006
2024-02-13 2023-12-31 13F TENARIS S A COM 88031M109 222,742 5,173 2.38 7,743 12.61 0.0014
2023-11-13 2023-09-30 13F TENARIS S A COM 88031M109 217,569 -406 -0.19 6,875 5.32 0.0013
2023-08-11 2023-06-30 13F TENARIS S A COM 88031M109 217,975 6,201 2.93 6,528 8.47 0.0013
2023-05-15 2023-03-31 13F TENARIS S A COM 88031M109 211,774 130,813 161.58 6,019 111.45 0.0012
2023-02-13 2022-12-31 13F TENARIS S A COM 88031M109 80,961 -5,239 -6.08 2,847 27.74 0.0006
2022-11-14 2022-09-30 13F TENARIS S A COM 88031M109 86,200 -3,692 -4.11 2,228 -3.51 0.0005
2022-08-12 2022-06-30 13F TENARIS S A COM 88031M109 89,892 -6,579 -6.82 2,309 -20.41 0.0005
2022-05-13 2022-03-31 13F TENARIS S A COM 88031M109 96,471 -49,224 -33.79 2,901 -4.57 0.0005
2022-02-08 2021-12-31 13F TENARIS S A SPONSORED ADS 88031M109 145,695 -4,242 -2.83 3,040 -3.98 0.0005
2021-11-15 2021-09-30 13F TENARIS S A SPONSORED ADS 88031M109 149,937 -82,392 -35.46 3,166 -37.78 0.0006
2021-08-13 2021-06-30 13F TENARIS S A SPONSORED ADS 88031M109 232,329 -86,105 -27.04 5,088 -29.58 0.0009
2021-05-12 2021-03-31 13F TENARIS S A SPONSORED ADS 88031M109 318,434 -16,031 -4.79 7,225 35.43 0.0013
2021-02-11 2020-12-31 13F TENARIS S A SPONSORED ADS 88031M109 334,465 12,592 3.91 5,335 68.24 0.0010
2020-11-16 2020-09-30 13F TENARIS S A SPONSORED ADS 88031M109 321,873 -30,186 -8.57 3,171 -30.34 0.0007
2020-08-14 2020-06-30 13F TENARIS S A COM 88031M109 352,059 32,190 10.06 4,552 18.11 0.0011
2020-05-14 2020-03-31 13F TENARIS S A SPONSORED ADS 88031M109 319,869 -62,189 -16.28 3,854 -55.44 0.0011
2020-02-14 2019-12-31 13F TENARIS S A SPONSORED ADS 88031M109 382,058 71,575 23.05 8,649 31.50 0.0019
2019-11-13 2019-09-30 13F TENARIS S A COM 88031M109 310,483 -57,787 -15.69 6,577 -32.13 0.0016
2019-08-13 2019-06-30 13F TENARIS S A SPONSORED ADS 88031M109 368,270 -7,270 -1.94 9,690 -8.66 0.0023
2019-05-13 2019-03-31 13F TENARIS S A SPONSORED ADS 88031M109 375,540 -105,657 -21.96 10,609 3.41 0.0026
2019-02-12 2018-12-31 13F TENARIS S A SPONSORED ADR 88031M109 481,197 -110,806 -18.72 10,259 -48.30 0.0029
2018-11-14 2018-09-30 13F TENARIS S A SPONSORED ADR 88031M109 592,003 -34,561 -5.52 19,845 -12.96 0.0049
2018-09-18 2018-06-30 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 626,564 25,080 4.17 22,800 9.34 0.0058
2018-08-14 2018-06-30 13F TENARIS S A SPONSORED ADR 88031M109 665,178 63,694 24,206
2018-05-09 2018-03-31 13F TENARIS S A SPONSORED ADR 88031M109 601,484 13,935 2.37 20,853 11.39 0.0054
2018-02-14 2017-12-31 13F TENARIS S A SPONSORED ADR 88031M109 587,549 22,556 3.99 18,720 17.04 0.0047
2017-11-13 2017-09-30 13F TENARIS S A SPONSORED ADR 88031M109 564,993 -10,759 -1.87 15,995 -10.78 0.0042
2017-08-11 2017-06-30 13F TENARIS S A COM 88031M109 575,752 -88,334 -13.30 17,928 -20.92 0.0050
2017-05-12 2017-03-31 13F TENARIS S A COM 88031M109 664,086 -79,814 -10.73 22,672 -14.65 0.0065
2017-02-13 2016-12-31 13F TENARIS S A COM 88031M109 743,900 186,016 33.34 26,565 67.67 0.0081
2016-11-09 2016-09-30 13F TENARIS S A SPONSORED ADR 88031M109 557,884 87,763 18.67 15,844 16.85 0.0049
2016-08-12 2016-06-30 13F TENARIS S A SPONSORED ADR 88031M109 470,121 258,098 121.73 13,559 161.45 0.0044
2016-08-19 2016-03-31 13F/A-1 TENARIS S A SPONSORED ADR 88031M109 212,023 -30,025 -12.40 5,186 -9.98 0.0017
2016-05-13 2016-03-31 13F Tenaris S A ADR 88031M109 211,990 5,249
2016-02-12 2015-12-31 13F Tenaris S A ADR 88031M109 242,048 -7,746 -3.10 5,761 -4.33 0.0019
2015-11-12 2015-09-30 13F Tenaris S A ADR 88031M109 249,794 249,794 0.00 6,022 0.0020
2015-08-13 2015-06-30 13F Tenaris S A ADR 88031M109 0 -265,147 -100.00 0 -100.00
2015-05-14 2015-03-31 13F Tenaris S A ADR 88031M109 265,147 28,565 12.07 7,424 3.88 0.0022
2015-02-12 2014-12-31 13F Tenaris S A ADR 88031M109 236,582 -443 -0.19 7,147 -33.80 0.0022
2014-11-13 2014-09-30 13F Tenaris S A ADR 88031M109 237,025 -145,601 -38.05 10,796 -40.16 0.0034
2014-08-14 2014-06-30 13F TENARIS S A com 88031M109 382,626 166,736 77.23 18,041 88.85 0.0056
2014-05-14 2014-03-31 13F TENARIS S A ADR 88031M109 215,890 108,245 100.56 9,553 103.13 0.0030
2014-02-21 2013-12-31 13F/A-1 TENARIS S A COM 88031M109 107,645 -6,623 -5.80 4,703 -12.01 0.0015
2014-02-12 2013-12-31 13F TENARIS S A COM 88031M109 107,645 4,703
2013-11-13 2013-09-30 13F TENARIS S A COM 88031M109 114,268 5,071 4.64 5,345 21.53 0.0019
2013-08-09 2013-06-30 13F TENARIS S A COM 88031M109 109,197 109,197 4,398 0.0016
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.