Ampco-Pittsburgh Corporation
US ˙ NYSE ˙ US0320371034

SecurityAP / Ampco-Pittsburgh Corporation
InstitutionNorthern Trust Corp
Latest Disclosed Ownership28,419 shares
Latest Disclosed Value $ 190,976
Northern Trust Corp ownership in AP / Ampco-Pittsburgh Corporation

On May 14, 2026 - Northern Trust Corp filed a 13F-HR form disclosing ownership of 28,419 shares of Ampco-Pittsburgh Corporation (US:AP) valued at $190,976 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 28,419 shares of Ampco-Pittsburgh Corporation. This represents a change in shares of 0.00% during the quarter. The current value of the position is $314,598 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 AMPCO-PITTSBURG COM 032037103 28,419 0 0.00 191 25.83 0.0000
2026-02-17 2025-12-31 13F AMPCO-PITTSBURG COM 032037103 28,419 7,421 35.34 151 214.58 0.0000
2025-11-14 2025-09-30 13F AMPCO-PITTSBURG COM 032037103 20,998 -600 -2.78 48 -23.81 0.0000
2025-08-13 2025-06-30 13F AMPCO-PITTSBURG COM 032037103 21,598 -92 -0.42 64 34.04 0.0000
2025-05-13 2025-03-31 13F AMPCO-PITTSBURG COM 032037103 21,690 0 0.00 47 4.44 0.0000
2025-02-14 2024-12-31 13F AMPCO-PITTSBURG COM 032037103 21,690 0 0.00 45 4.65 0.0000
2024-11-13 2024-09-30 13F AMPCO-PITTSBURG COM 032037103 21,690 0 0.00 43 168.75 0.0000
2024-08-14 2024-06-30 13F AMPCO-PITTSBURG COM 032037103 21,690 -3,023 -12.23 17 -69.81 0.0000
2024-05-14 2024-03-31 13F AMPCO-PITTSBURG COM 032037103 24,713 -9,800 -28.40 54 -43.62 0.0000
2024-02-13 2023-12-31 13F AMPCO-PITTSBURG COM 032037103 34,513 6,073 21.35 94 27.03 0.0000
2023-11-13 2023-09-30 13F AMPCO-PITTSBURG COM 032037103 28,440 0 0.00 75 -17.78 0.0000
2023-08-11 2023-06-30 13F AMPCO-PITTSBURG COM 032037103 28,440 2,028 7.68 90 40.63 0.0000
2023-05-15 2023-03-31 13F AMPCO-PITTSBURG COM 032037103 26,412 3,618 15.87 65 12.28 0.0000
2023-02-13 2022-12-31 13F AMPCO-PITTSBURG COM 032037103 22,794 0 0.00 57 -32.14 0.0000
2022-11-14 2022-09-30 13F AMPCO-PITTSBURG COM 032037103 22,794 0 0.00 84 -4.55 0.0000
2022-08-12 2022-06-30 13F AMPCO-PITTSBURG COM 032037103 22,794 -1,053 -4.42 88 -41.33 0.0000
2022-05-13 2022-03-31 13F AMPCO-PITTSBURG COM 032037103 23,847 -109 -0.46 150 25.00 0.0000
2022-02-08 2021-12-31 13F AMPCO-PITTSBURG COM 032037103 23,956 0 0.00 120 6.19 0.0000
2021-11-15 2021-09-30 13F AMPCO-PITTSBURG COM 032037103 23,956 0 0.00 113 -22.07 0.0000
2021-08-13 2021-06-30 13F AMPCO-PITTSBURG COM 032037103 23,956 0 0.00 145 -10.49 0.0000
2021-05-12 2021-03-31 13F AMPCO-PITTSBURG COM 032037103 23,956 -863 -3.48 162 19.12 0.0000
2021-02-11 2020-12-31 13F AMPCO-PITTSBURG COM 032037103 24,819 3,429 16.03 136 94.29 0.0000
2020-11-16 2020-09-30 13F AMPCO-PITTSBURG COM 032037103 21,390 -4,019 -15.82 70 -10.26 0.0000
2020-08-14 2020-06-30 13F AMPCO-PITTSBURGH COM 032037103 25,409 -3,012 -10.60 78 8.33 0.0000
2020-05-14 2020-03-31 13F AMPCO-PITTSBURGH COM 032037103 28,421 100 0.35 72 -15.29 0.0000
2020-02-14 2019-12-31 13F AMPCO-PITTSBURGH COM 032037103 28,321 336 1.20 85 -17.48 0.0000
2019-11-13 2019-09-30 13F AMPCO-PITTSBURGH COM 032037103 27,985 -200 -0.71 103 -8.85 0.0000
2019-08-13 2019-06-30 13F AMPCO-PITTSBURGH COM 032037103 28,185 -26 -0.09 113 22.83 0.0000
2019-05-13 2019-03-31 13F AMPCO-PITTSBURGH COM 032037103 28,211 0 0.00 92 4.55 0.0000
2019-02-12 2018-12-31 13F AMPCO-PITTSBURGH COM 032037103 28,211 -401 -1.40 88 -47.93 0.0000
2018-11-14 2018-09-30 13F AMPCO-PITTSBURGH COM 032037103 28,612 -1,503 -4.99 169 -45.31 0.0000
2018-09-18 2018-06-30 13F/A-1 AMPCO-PITTSBURGH COM 032037103 30,115 -71,523 -70.37 309 -65.86 0.0001
2018-08-14 2018-06-30 13F AMPCO-PITTSBURGH COM 032037103 30,115 -71,523 309
2018-05-09 2018-03-31 13F AMPCO-PITTSBURGH COM 032037103 101,638 -2,647 -2.54 905 -30.01 0.0002
2018-02-14 2017-12-31 13F AMPCO-PITTSBURGH COM 032037103 104,285 2 0.00 1,293 -28.76 0.0003
2017-11-13 2017-09-30 13F AMPCO-PITTSBURGH COM 032037103 104,283 -355 -0.34 1,815 17.63 0.0005
2017-08-11 2017-06-30 13F AMPCO-PITTSBURGH COM 032037103 104,638 7,212 7.40 1,543 12.79 0.0004
2017-05-12 2017-03-31 13F AMPCO-PITTSBURGH COM 032037103 97,426 -1,352 -1.37 1,368 -17.29 0.0004
2017-02-13 2016-12-31 13F AMPCO-PITTSBURGH COM 032037103 98,778 2,942 3.07 1,654 55.60 0.0005
2016-11-09 2016-09-30 13F AMPCO-PITTSBURGH COM 032037103 95,836 -678 -0.70 1,063 -2.57 0.0003
2016-08-12 2016-06-30 13F AMPCO-PITTSBURGH COM 032037103 96,514 71,134 280.28 1,091 208.19 0.0004
2016-08-19 2016-03-31 13F/A-1 AMPCO-PITTSBURGH COM 032037103 25,380 1,597 6.71 354 45.08 0.0001
2016-05-13 2016-03-31 13F AMPCO-PITTSBURGH COM 032037103 25,380 354
2016-02-12 2015-12-31 13F AMPCO-PITTSBURGH COM 032037103 23,783 375 1.60 244 -4.69 0.0001
2015-11-12 2015-09-30 13F AMPCO-PITTSBURGH COM 032037103 23,408 -59,461 -71.75 256 -79.57 0.0001
2015-08-13 2015-06-30 13F AMPCO-PITTSBURGH COM 032037103 82,869 -8,687 -9.49 1,253 -21.64 0.0008
2015-05-14 2015-03-31 13F AMPCO-PITTSBURGH COM 032037103 91,556 237 0.26 1,599 -9.04 0.0005
2015-02-12 2014-12-31 13F AMPCO-PITTSBURGH COM 032037103 91,319 -5,481 -5.66 1,758 -9.19 0.0005
2014-11-13 2014-09-30 13F AMPCO-PITTSBURGH COM 032037103 96,800 -3,450 -3.44 1,936 -15.83 0.0006
2014-08-14 2014-06-30 13F AMPCO-PITTSBURGH COM 032037103 100,250 -13,752 -12.06 2,300 6.88 0.0007
2014-05-14 2014-03-31 13F AMPCO-PITTSBURGH COM 032037103 114,002 -11,171 -8.92 2,152 -11.59 0.0007
2014-02-21 2013-12-31 13F/A-1 AMPCO-PITTSBURGH COM 032037103 125,173 1,806 1.46 2,434 10.09 0.0008
2014-02-12 2013-12-31 13F AMPCO-PITTSBURGH COM 032037103 125,173 2,434
2013-11-13 2013-09-30 13F AMPCO-PITTSBURGH COM 032037103 123,367 -166 -0.13 2,211 -4.66 0.0008
2013-08-09 2013-06-30 13F AMPCO-PITTSBURGH COM 032037103 123,533 123,533 2,319 0.0008
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.