Westinghouse Air Brake Technologies Corporation
MX ˙ BMV ˙ US9297401088
SecurityMX:WAB / Westinghouse Air Brake Technologies Corporation
InstitutionFirst Pacific Advisors, LP
ManagerRobert Rodriguez And Steven Romick
Latest Disclosed Ownership260,732 shares
Latest Disclosed Value $ 65,159,534
First Pacific Advisors, LP reports 41.35% decrease in ownership of WAB / Westinghouse Air Brake Technologies Corporation

On May 14, 2026 - First Pacific Advisors, LP filed a 13F-HR form disclosing ownership of 260,732 shares of Westinghouse Air Brake Technologies Corporation (MX:WAB) valued at $65,159,534 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 444,548 shares of Westinghouse Air Brake Technologies Corporation. This represents a change in shares of -41.35% during the quarter.

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 WABTEC COM 929740108 260,732 -183,816 -41.35 65,160 -31.33 0.9127
2026-02-17 2025-12-31 13F WABTEC COM 929740108 444,548 7,885 1.81 94,889 8.40 1.2492
2025-11-13 2025-09-30 13F WABTEC COM 929740108 436,663 700 0.16 87,538 -4.09 1.2100
2025-08-01 2025-06-30 13F WABTEC COM 929740108 435,963 6,003 1.40 91,269 17.05 1.3061
2025-05-06 2025-03-31 13F WABTEC COM 929740108 429,960 -42,697 -9.03 77,973 -12.99 1.2500
2025-02-07 2024-12-31 13F WABTEC COM 929740108 472,657 -119,352 -20.16 89,611 -16.73 1.2809
2024-11-04 2024-09-30 13F WABTEC COM 929740108 592,009 -45,860 -7.19 107,609 6.74 1.4948
2024-08-02 2024-06-30 13F WABTEC COM 929740108 637,869 -92,541 -12.67 100,815 -5.25 1.3635
2024-05-02 2024-03-31 13F WABTEC COM 929740108 730,410 -133,013 -15.41 106,406 -2.89 1.4921
2024-02-12 2023-12-31 13F WABTEC COM 929740108 863,423 11,868 1.39 109,568 21.08 1.6409
2023-11-13 2023-09-30 13F WABTEC COM 929740108 851,555 -200,562 -19.06 90,495 -21.57 1.4188
2023-08-11 2023-06-30 13F WABTEC COM 929740108 1,052,117 -21,253 -1.98 115,386 6.37 1.6849
2023-05-09 2023-03-31 13F WABTEC COM 929740108 1,073,370 -260,552 -19.53 108,475 -18.53 1.6840
2023-02-07 2022-12-31 13F WABTEC COM 929740108 1,333,922 -279,267 -17.31 133,139 1.45 2.0408
2022-11-04 2022-09-30 13F WABTEC COM 929740108 1,613,189 15,806 0.99 131,233 0.09 2.0830
2022-08-08 2022-06-30 13F WABTEC COM 929740108 1,597,383 43,127 2.77 131,113 -12.28 1.9412
2022-05-11 2022-03-31 13F WABTEC COM 929740108 1,554,256 -58,939 -3.65 149,473 0.59 1.9241
2022-02-08 2021-12-31 13F WABTEC COM 929740108 1,613,195 -401,000 -19.91 148,591 -14.43 1.8430
2021-11-03 2021-09-30 13F WABTEC COM 929740108 2,014,195 -426,925 -17.49 173,644 -13.57 2.2520
2021-08-10 2021-06-30 13F WABTEC COM 929740108 2,441,120 -519,335 -17.54 200,904 -14.27 2.5208
2021-05-11 2021-03-31 13F WABTEC COM 929740108 2,960,455 8,267 0.28 234,350 8.45 3.1828
2021-02-09 2020-12-31 13F WABTEC COM 929740108 2,952,188 71,440 2.48 216,100 21.23 2.7841
2020-11-13 2020-09-30 13F WABTEC COM 929740108 2,880,748 41,510 1.46 178,261 9.06 2.4782
2020-08-11 2020-06-30 13F WABTEC COM 929740108 2,839,238 219,607 8.38 163,455 29.64 2.1995
2020-05-08 2020-03-31 13F WABTEC COM 929740108 2,619,631 2,619,631 93,458.25 126,083 55,443.17 1.7781
2016-02-16 2015-12-31 13F WABTEC COM 929740108 0 -2,800 -100.00 0 -100.00
2015-11-16 2015-09-30 13F WABTEC COM 929740108 2,800 0 0.00 247 -6.44 0.0021
2015-08-14 2015-06-30 13F WABTEC COM 929740108 2,800 0 0.00 264 -0.75 0.0022
2015-05-15 2015-03-31 13F WABTEC COM 929740108 2,800 0 0.00 266 9.47 0.0022
2015-02-17 2014-12-31 13F WABTEC COM 929740108 2,800 0 0.00 243 7.05 0.0019
2014-11-14 2014-09-30 13F WABTEC COM 929740108 2,800 0 0.00 227 -1.73 0.0019
2014-08-14 2014-06-30 13F WABTEC COM 929740108 2,800 0 0.00 231 6.45 0.0019
2014-05-14 2014-03-31 13F WABTEC COM 929740108 2,800 0 0.00 217 4.33 0.0019
2014-02-12 2013-12-31 13F WABTEC COM 929740108 2,800 0 0.00 208 18.18 0.0020
2013-11-14 2013-09-30 13F WABTEC CS 929740108 2,800 -1,000 -26.32 176 -13.30 0.0018
2013-08-14 2013-06-30 13F WABTEC CS 929740108 3,800 3,800 203 0.0022
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.