MSA Safety Incorporated
US ˙ NYSE ˙ US5534981064

SecurityMSA / MSA Safety Incorporated
InstitutionDimensional Fund Advisors Lp
Latest Disclosed Ownership758,344 shares
Latest Disclosed Value $ 124,323,744
Dimensional Fund Advisors Lp reports 0.83% decrease in ownership of MSA / MSA Safety Incorporated

On May 7, 2026 - Dimensional Fund Advisors Lp filed a 13F-HR form disclosing ownership of 758,344 shares of MSA Safety Incorporated (US:MSA) valued at $124,330,499 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 12, 2026 disclosing 764,663 shares of MSA Safety Incorporated. This represents a change in shares of -0.83% during the quarter. The current value of the position is $124,815,839 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 MSA SAFETY COM 553498106 758,344 -6,319 -0.83 124,324 1.52 0.0056
2026-02-12 2025-12-31 13F MSA SAFETY COM 553498106 764,663 9,915 1.31 122,460 -5.70 0.0257
2025-11-12 2025-09-30 13F MSA SAFETY COM 553498106 754,748 16,576 2.25 129,866 5.01 0.0279
2025-08-12 2025-06-30 13F MSA SAFETY COM 553498106 738,172 -681 -0.09 123,667 14.10 0.0286
2025-05-13 2025-03-31 13F MSA SAFETY COM 553498106 738,853 -21,941 -2.88 108,384 -14.06 0.0269
2025-02-13 2024-12-31 13F MSA SAFETY COM 553498106 760,794 4,734 0.63 126,118 -5.94 0.0303
2024-11-07 2024-09-30 13F MSA SAFETY COM 553498106 756,060 17,109 2.32 134,079 -3.33 0.0325
2024-08-09 2024-06-30 13F MSA SAFETY COM 553498106 738,951 22,979 3.21 138,695 0.07 0.0362
2024-05-10 2024-03-31 13F MSA SAFETY COM 553498106 715,972 -4,551 -0.63 138,605 13.94 0.0375
2024-02-07 2023-12-31 13F MSA SAFETY COM 553498106 720,523 17,007 2.42 121,646 9.68 0.0355
2023-11-09 2023-09-30 13F MSA SAFETY COM 553498106 703,516 -10,872 -1.52 110,912 -10.75 0.0364
2023-08-09 2023-06-30 13F MSA SAFETY COM 553498106 714,388 2,874 0.40 124,274 30.84 0.0396
2023-05-12 2023-03-31 13F MSA SAFETY COM 553498106 711,514 5,913 0.84 94,986 93,944.55 0.0320
2023-02-09 2022-12-31 13F MSA SAFETY COM 553498106 705,601 11,381 1.64 102 -99.87 0.0301
2022-11-10 2022-09-30 13F MSA SAFETY COM 553498106 694,220 6,123 0.89 75,866 -8.93 0.0291
2022-08-12 2022-06-30 13F MSA SAFETY COM 553498106 688,097 -5,431 -0.78 83,303 -9.49 0.0299
2022-05-13 2022-03-31 13F MSA SAFETY COM 553498106 693,528 15,653 2.31 92,036 -10.06 0.0284
2022-02-09 2021-12-31 13F MSA SAFETY COM 553498106 677,875 616 0.09 102,331 3.70 0.0309
2021-11-12 2021-09-30 13F MSA SAFETY COM 553498106 677,259 1,863 0.28 98,678 -11.76 0.0318
2021-08-12 2021-06-30 13F MSA SAFETY COM 553498106 675,396 -11,132 -1.62 111,831 8.58 0.0354
2021-05-14 2021-03-31 13F MSA SAFETY COM 553498106 686,528 -41,361 -5.68 102,993 -5.28 0.0341
2021-03-08 2020-12-31 13F/A-2 MSA SAFETY COM 553498106 727,889 -6,423 -0.87 108,739 10.37 0.0393
2021-02-11 2020-12-31 13F MSA SAFETY COM 553498106 727,889 -6,423 108,739 39,270.7470
2020-11-12 2020-09-30 13F MSA SAFETY COM 553498106 734,312 3,973 0.54 98,518 17.88 0.0418
2020-08-13 2020-06-30 13F MSA SAFETY COM 553498106 730,339 -1,434 -0.20 83,576 12.86 0.0367
2020-05-14 2020-03-31 13F MSA SAFETY COM 553498106 731,773 -3,487 -0.47 74,056 -20.29 0.0386
2020-02-14 2019-12-31 13F MSA SAFETY COM 553498106 735,260 -68,751 -8.55 92,909 5.91 0.0339
2019-11-12 2019-09-30 13F MSA SAFETY COM 553498106 804,011 300 0.04 87,725 3.57 0.0341
2019-08-13 2019-06-30 13F MSA SAFETY COM 553498106 803,711 6,372 0.80 84,702 2.74 0.0329
2019-08-12 2019-03-31 13F/A-2 MSA SAFETY COM 553498106 797,339 -1,642 -0.21 82,446 9.46 0.0328
2019-05-10 2019-03-31 13F MSA SAFETY COM 553498106 797,339 -1,642 82,446
2019-02-26 2018-12-31 13F/A-1 MSA SAFETY COM 553498106 798,981 -8,885 -1.10 75,319 -12.41 0.0341
2019-02-13 2018-12-31 13F MSA SAFETY COM 553498106 798,981 -8,885 75,319
2018-11-13 2018-09-30 13F MSA SAFETY COM 553498106 807,866 1,863 0.23 85,988 10.74 0.0327
2018-08-10 2018-06-30 13F MSA SAFETY COM 553498106 806,003 -20,450 -2.47 77,650 12.87 0.0310
2018-05-11 2018-03-31 13F MSA SAFETY COM 553498106 826,453 -12,525 -1.49 68,794 5.77 0.0287
2018-02-12 2017-12-31 13F MSA SAFETY COM 553498106 838,978 -13,793 -1.62 65,039 -4.08 0.0270
2017-11-13 2017-09-30 13F MSA SAFETY COM 553498106 852,771 2,153 0.25 67,805 -1.80 0.0296
2017-08-11 2017-06-30 13F MSA SAFETY COM 553498106 850,618 4,212 0.50 69,045 15.40 0.0319
2017-05-12 2017-03-31 13F MSA SAFETY COM 553498106 846,406 282 0.03 59,831 1.99 0.0286
2017-02-09 2016-12-31 13F MSA SAFETY COM 553498106 846,124 3,574 0.42 58,662 19.96 0.0293
2016-11-10 2016-09-30 13F MSA SAFETY COM 553498106 842,550 -500 -0.06 48,900 10.43 0.0264
2016-08-09 2016-06-30 13F MSA SAFETY COM 553498106 843,050 25,208 3.08 44,283 11.99 0.0255
2016-05-13 2016-03-31 13F MSA SAFETY COM 553498106 817,842 39,135 5.03 39,543 16.81 0.0237
2016-02-10 2015-12-31 13F MSA SAFETY COM 553498106 778,707 51,886 7.14 33,851 16.53 0.0211
2015-11-13 2015-09-30 13F MSA SAFETY COM 553498106 726,821 43,689 6.40 29,050 -12.34 0.0191
2015-08-14 2015-06-30 13F MSA SAFETY COM 553498106 683,132 14,043 2.10 33,140 -0.70 0.0203
2015-05-14 2015-03-31 13F MSA SAFETY COM 553498106 669,089 31,003 4.86 33,374 -1.48 0.0211
2015-02-06 2014-12-31 13F MSA SAFETY COM 553498106 638,086 26,162 4.28 33,877 12.06 0.0222
2014-11-13 2014-09-30 13F MSA SAFETY COM 553498106 611,924 16,514 2.77 30,230 -11.67 0.0214
2014-08-08 2014-06-30 13F MSA SAFETY COM 553498106 595,410 37,878 6.79 34,224 7.70 0.0238
2014-05-14 2014-03-31 13F MSA SAFETY COM 553498106 557,532 557,532 31,778 0.0237
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.