L.B. Foster Company
US ˙ NasdaqGS ˙ US3500601097

SecurityFSTR / L.B. Foster Company
InstitutionState Street Corp
Latest Disclosed Ownership152,551 shares
Latest Disclosed Value $ 4,256,173
State Street Corp reports 4.74% increase in ownership of FSTR / L.B. Foster Company

On May 15, 2026 - State Street Corp filed a 13F-HR form disclosing ownership of 152,551 shares of L.B. Foster Company (US:FSTR) valued at $4,256,173 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 13, 2026 disclosing 145,647 shares of L.B. Foster Company. This represents a change in shares of 4.74% during the quarter. The current value of the position is $6,318,662 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 FOSTER L B COM 350060109 152,551 6,904 4.74 4,256 8.43 0.0001
2026-02-13 2025-12-31 13F FOSTER L B COM 350060109 145,647 3,349 2.35 3,925 2.37 0.0001
2025-11-14 2025-09-30 13F FOSTER L B COM 350060109 142,298 3,898 2.82 3,835 26.70 0.0001
2025-08-14 2025-06-30 13F FOSTER L B COM 350060109 138,400 4,134 3.08 3,027 14.53 0.0001
2025-05-15 2025-03-31 13F FOSTER L B COM 350060109 134,266 6,079 4.74 2,642 -23.38 0.0001
2025-02-14 2024-12-31 13F FOSTER L B COM 350060109 128,187 97 0.08 3,448 31.80 0.0001
2024-11-14 2024-09-30 13F FOSTER L B COM 350060109 128,090 6,698 5.52 2,617 0.15 0.0001
2024-08-14 2024-06-30 13F FOSTER L B COM 350060109 121,392 79,764 191.61 2,612 129.93 0.0001
2024-05-15 2024-03-31 13F FOSTER L B COM 350060109 41,628 7,000 20.21 1,137 49.28 0.0001
2024-02-14 2023-12-31 13F FOSTER L B COM 350060109 34,628 1,400 4.21 761 21.18 0.0000
2023-11-14 2023-09-30 13F FOSTER L B COM 350060109 33,228 1,900 6.06 628 40.49 0.0000
2023-08-14 2023-06-30 13F FOSTER L B COM 350060109 31,328 -500 -1.57 447 22.47 0.0000
2023-05-15 2023-03-31 13F FOSTER L B COM 350060109 31,828 0 0.00 365 18.51 0.0000
2023-05-15 2022-12-31 13F/A-99 FOSTER L B COM 350060109 31,828 0 0.00 308 -0.96 0.0000
2023-05-15 2022-12-31 13F FOSTER L B COM 350060109 31,828 0 308 0.0000
2022-11-15 2022-09-30 13F FOSTER L B COM 350060109 31,828 0 0.00 311 -24.15 0.0000
2022-08-15 2022-06-30 13F FOSTER L B COM 350060109 31,828 0 0.00 410 -16.16 0.0000
2022-05-16 2022-03-31 13F FOSTER L B COM 350060109 31,828 1,228 4.01 489 16.15 0.0000
2022-02-14 2021-12-31 13F FOSTER L B COM 350060109 30,600 0 0.00 421 -11.18 0.0000
2021-11-15 2021-09-30 13F FOSTER L B COM 350060109 30,600 0 0.00 474 -16.84 0.0000
2021-08-16 2021-06-30 13F FOSTER L B COM 350060109 30,600 -141,838 -82.25 570 -81.54 0.0000
2021-07-09 2021-03-31 13F/A-1 FOSTER L B COM 350060109 172,438 -16,594 -8.78 3,087 8.51 0.0002
2021-05-17 2021-03-31 13F FOSTER L B COM 350060109 172,438 -16,594 3,087 0.0002
2021-02-16 2020-12-31 13F FOSTER L B COM 350060109 189,032 18,180 10.64 2,845 24.07 0.0002
2020-11-10 2020-09-30 13F FOSTER L B COM 350060109 170,852 -7,500 -4.21 2,293 0.66 0.0002
2020-08-14 2020-06-30 13F FOSTER L B COM 350060109 178,352 3,589 2.05 2,278 5.46 0.0002
2020-06-19 2020-03-31 13F/A-1 FOSTER L B COM 350060109 174,763 667 0.38 2,160 -35.98 0.0002
2020-05-11 2020-03-31 13F FOSTER L B COM 350060109 174,763 667 2,160 189.6915
2020-02-06 2019-12-31 13F FOSTER L B COM 350060109 174,096 8,517 5.14 3,374 -5.96 0.0002
2019-11-14 2019-09-30 13F FOSTER L B COM 350060109 165,579 -37,555 -18.49 3,588 -35.40 0.0003
2019-08-14 2019-06-30 13F FOSTER L B COM 350060109 203,134 11,948 6.25 5,554 54.36 0.0004
2019-05-15 2019-03-31 13F FOSTER L B COM 350060109 191,186 9,413 5.18 3,598 24.50 0.0003
2019-02-12 2018-12-31 13F FOSTER L B COM 350060109 181,773 1,747 0.97 2,890 -21.87 0.0003
2018-11-09 2018-09-30 13F FOSTER Common equity shares 350060109 180,026 7,531 4.37 3,699 -6.59 0.0003
2018-08-14 2018-06-30 13F FOSTER Common equity shares 350060109 172,495 46,414 36.81 3,960 33.29 0.0003
2018-05-15 2018-03-31 13F FOSTER Common equity shares 350060109 126,081 -30,670 -19.57 2,971 -30.21 0.0003
2018-02-14 2017-12-31 13F FOSTER Common equity shares 350060109 156,751 41,343 35.82 4,257 62.05 0.0003
2017-11-14 2017-09-30 13F FOSTER Common equity shares 350060109 115,408 23,211 25.18 2,627 32.81 0.0002
2017-08-14 2017-06-30 13F FOSTER Common equity shares 350060109 92,197 75,509 452.47 1,978 850.96 0.0002
2017-05-15 2017-03-31 13F FOSTER Common equity shares 350060109 16,688 -59,429 -78.08 208 -79.88 0.0000
2017-02-09 2016-12-31 13F FOSTER Common equity shares 350060109 76,117 1,900 2.56 1,034 16.18 0.0001
2017-01-13 2016-09-30 13F/A-1 FOSTER Common equity shares 350060109 74,217 1,500 2.06 890 12.66 0.0001
2016-11-14 2016-09-30 13F FOSTER Common equity shares 350060109 74,217 890
2016-08-12 2016-06-30 13F FOSTER Common equity shares 350060109 72,717 -165,878 -69.52 790 -81.76 0.0001
2016-05-20 2016-03-31 13F/A-1 FOSTER Common equity shares 350060109 238,595 65,897 38.16 4,332 83.95 0.0005
2016-05-12 2016-03-31 13F FOSTER Common equity shares 350060109 238,595 4,332
2016-02-16 2015-12-31 13F FOSTER Common equity shares 350060109 172,698 712 0.41 2,355 11.61 0.0003
2015-11-16 2015-09-30 13F FOSTER Common equity shares 350060109 171,986 -4,390 -2.49 2,110 -65.44 0.0002
2015-08-13 2015-06-30 13F FOSTER Common equity shares 350060109 176,376 -1,117 -0.63 6,106 -27.55 0.0007
2015-05-15 2015-03-31 13F FOSTER Common equity shares 350060109 177,493 2,273 1.30 8,428 -0.93 0.0009
2015-02-11 2014-12-31 13F FOSTER Common equity shares 350060109 175,220 301 0.17 8,507 5.83 0.0008
2014-11-12 2014-09-30 13F/A-1 FOSTER Common equity shares 350060109 174,919 -6,314 -3.48 8,038 -18.04 0.0009
2014-11-10 2014-09-30 13F FOSTER Common equity shares 350060109 174,919 8,038
2014-08-12 2014-06-30 13F FOSTER Common equity shares 350060109 181,233 -19,700 -9.80 9,807 4.21 0.0011
2014-05-15 2014-03-31 13F/A-1 FOSTER Common equity shares 350060109 200,933 341 0.17 9,411 -0.80 0.0011
2014-05-13 2014-03-31 13F FOSTER Common equity shares 350060109 200,933 9,411
2014-02-06 2013-12-31 13F/A-1 FOSTER Common equity shares 350060109 200,592 -3,190 -1.57 9,487 1.81 0.0011
2014-02-06 2013-12-31 13F FOSTER Common equity shares 350060109 222,202 9,652
2013-11-12 2013-09-30 13F FOSTER Common equity shares 350060109 203,782 7,909 4.04 9,318 10.15 0.0011
2013-08-08 2013-06-30 13F FOSTER Common equity shares 350060109 195,873 195,873 8,459 0.0011
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.