Minerals Technologies Inc.
US ˙ NYSE ˙ US6031581068

SecurityMTX / Minerals Technologies Inc.
InstitutionFirst Manhattan Co
Latest Disclosed Ownership101,257 shares
Latest Disclosed Value $ 7,181,146
First Manhattan Co reports 15.98% decrease in ownership of MTX / Minerals Technologies Inc.

On May 15, 2026 - First Manhattan Co filed a 13F-HR form disclosing ownership of 101,257 shares of Minerals Technologies Inc. (US:MTX) valued at $7,181,146 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 120,515 shares of Minerals Technologies Inc.. This represents a change in shares of -15.98% during the quarter. The current value of the position is $7,598,325 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)
2026-05-15 2026-03-31 13F MINERALS TECHNOLOGIES COM 603158106 101,257 -19,258 -15.98 7,181 -2.23 0.0199
2026-02-17 2025-12-31 13F MINERALS TECHNOLOGIES COM 603158106 120,515 -4,800 -3.83 7,345 -5.64 0.0193
2025-11-14 2025-09-30 13F MINERALS TECHNOLOGIES COM 603158106 125,315 0 0.00 7,785 12.80 0.0206
2025-08-14 2025-06-30 13F MINERALS TECHNOLOGIES COM 603158106 125,315 -19,458 -13.44 6,901 -25.01 0.0195
2025-05-15 2025-03-31 13F MINERALS TECHNOLOGIES COM 603158106 144,773 -905 -0.62 9,203 -18.36 0.0268
2025-02-14 2024-12-31 13F MINERALS TECHNOLOGIES COM 603158106 145,678 2,239 1.56 11,273 1.76 0.0331
2024-11-14 2024-09-30 13F MINERALS TECHNOLOGIES COM 603158106 143,439 -35,362 -19.78 11,078 -25.50 0.0328
2024-08-15 2024-06-30 13F/A-1 MINERALS TECHNOLOGIES COM 603158106 178,801 -12,001 -6.29 14,869 3.52 0.0477
2024-08-14 2024-06-30 13F MINERALS TECHNOLOGIES COM 603158106 178,801 -12,001 14,869 0.0477
2024-05-15 2024-03-31 13F MINERALS TECHNOLOGIES COM 603158106 190,802 -2,613 -1.35 14,364 4.14 0.0465
2024-02-13 2023-12-31 13F MINERALS TECHNOLOGIES COM 603158106 193,415 -1,900 -0.97 13,792 28.96 0.0478
2023-11-14 2023-09-30 13F MINERALS TECHNOLOGIES COM 603158106 195,315 -9,050 -4.43 10,695 -9.28 0.0395
2023-08-14 2023-06-30 13F MINERALS TECHNOLOGIES COM 603158106 204,365 -5,301 -2.53 11,790 -5.69 0.0432
2023-05-15 2023-03-31 13F MINERALS TECHNOLOGIES COM 603158106 209,666 -4,252 -1.99 12,500 -2.38 0.0479
2023-02-14 2022-12-31 13F MINERALS TECHNOLOGIES COM 603158106 213,918 -1,675 -0.78 12,805 21.93 0.0469
2022-11-14 2022-09-30 13F MINERALS TECHNOLOGIES COM 603158106 215,593 -1,982 -0.91 10,502 -19.83 0.0445
2022-08-15 2022-06-30 13F MINERALS TECHNOLOGIES COM 603158106 217,575 -2,388 -1.09 13,099 -9.97 0.0528
2022-05-16 2022-03-31 13F MINERALS TECHNOLOGIES COM 603158106 219,963 -1,200 -0.54 14,550 -10.06 0.0476
2022-02-14 2021-12-31 13F MINERALS TECHNOLOGIES COM 603158106 221,163 -2,700 -1.21 16,178 3.48 0.0533
2021-11-15 2021-09-30 13F MINERALS TECHNOLOGIES COM 603158106 223,863 -400 -0.18 15,634 -11.38 0.0576
2021-08-16 2021-06-30 13F MINERALS TECHNOLOGIES COM 603158106 224,263 -400 -0.18 17,642 4.26 0.0644
2021-05-14 2021-03-31 13F MINERALS TECHNOLOGIES COM 603158106 224,663 -1,050 -0.47 16,921 20.68 0.0729
2021-02-16 2020-12-31 13F MINERALS TECHNOLOGIES COM 603158106 225,713 -18,934 -7.74 14,021 12.16 0.0671
2020-11-12 2020-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 244,647 -15,900 -6.10 12,501 2.24 0.0644
2020-08-14 2020-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 260,547 -15,175 -5.50 12,227 22.31 0.0707
2020-05-06 2020-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 275,722 -46,594 -14.46 9,997 -46.18 0.0648
2020-02-13 2019-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 322,316 -6,400 -1.95 18,575 6.44 0.0932
2019-11-13 2019-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 328,716 -13,860 -4.05 17,451 -4.80 0.0961
2019-08-16 2019-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 342,576 -5,600 -1.61 18,331 -10.45 0.1018
2019-04-12 2019-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 348,176 -24,000 -6.45 20,469 7.13 0.1182
2019-01-30 2018-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 372,176 -6,456 -1.71 19,107 -25.35 0.1189
2018-10-15 2018-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 378,632 -4,000 -1.05 25,595 -11.22 0.1364
2018-08-01 2018-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 382,632 -8,594 -2.20 28,831 10.08 0.1662
2018-04-20 2018-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 391,226 -4,300 -1.09 26,192 -3.82 0.1490
2018-01-22 2017-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 395,526 -7,300 -1.81 27,231 -4.31 0.1492
2017-10-25 2017-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 402,826 -3,200 -0.79 28,459 -4.25 0.1630
2017-08-10 2017-06-30 13F/A-2 MINERALS TECHNOLOGS COMMON 603158106 406,026 -4,450 -1.08 29,721 -5.47 0.1733
2017-08-01 2017-06-30 13F/A-1 MINERALS TECHNOLOGS COMMON 603158106 406,026 0 29,721 0.1733
2017-07-28 2017-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 406,026 -4,450 29,721
2017-04-25 2017-03-31 13F/A-1 MINERALS TECHNOLOGS COMMON 603158106 410,476 -12,250 -2.90 31,442 -3.71 0.1868
2017-04-24 2017-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 426,252 30,131
2017-01-25 2016-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 422,726 -3,526 -0.83 32,655 8.38 0.1986
2016-10-20 2016-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 426,252 -19,100 -4.29 30,131 19.12 0.1838
2016-07-14 2016-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 445,352 -2,567 -0.57 25,295 -0.66 0.1554
2016-04-22 2016-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 447,919 -2,766 -0.61 25,464 23.20 0.1567
2016-01-20 2015-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 450,685 -20,100 -4.27 20,668 -8.84 0.1268
2015-10-26 2015-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 470,785 900 0.19 22,673 -29.18 0.1457
2015-07-17 2015-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 469,885 -3,974 -0.84 32,013 -7.58 0.1890
2015-04-30 2015-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 473,859 -325 -0.07 34,639 5.18 0.1995
2015-01-20 2014-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 474,184 -900 -0.19 32,932 12.33 0.1864
2014-10-23 2014-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 475,084 -6,400 -1.33 29,317 -7.15 0.1705
2014-08-14 2014-06-30 13F/A-1 MINERALS TECHNOLOGS COMMON 603158106 481,484 -4,350 -0.90 31,575 0.67 0.2001
2014-05-16 2014-03-31 13F MINERALS TECHNOLOGS COMMON 603158106 485,834 -2,700 -0.55 31,365 6.88 0.2066
2014-02-04 2013-12-31 13F MINERALS TECHNOLOGS COMMON 603158106 488,534 -9,600 -1.93 29,346 19.33 0.1940
2013-10-29 2013-09-30 13F MINERALS TECHNOLOGS COMMON 603158106 498,134 -6,100 -1.21 24,592 7.26 0.1717
2013-08-13 2013-06-30 13F MINERALS TECHNOLOGS COMMON 603158106 504,234 504,234 22,927 0.1577
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.