L.B. Foster Company (FSTR)
FSTR moved a median of +0.07% 30 minutes after news, and +0.30% by the close. How FSTR actually reacts to news — the realized, point-in-time move the market made, measured across 332 labeled events over the last three years with zero look-ahead.
FSTR’s median reaction, across the day.
| Horizon | Median | % positive | Events |
|---|---|---|---|
| 5-min | 0.00% | 33% | 259 |
| 30-min | +0.07% | 54% | 320 |
| 60-min | 0.00% | 49% | 325 |
| to close | +0.30% | 58% | 328 |
| Middle 50% of FSTR reactions | -0.41% to +0.75% |
|---|---|
| Median reaction (30-min) | +0.07% |
| Measured reactions | 332 |
Half of all L.B. Foster Company news events land between -0.41% and +0.75% at 30 minutes.
Reaction stats as of 2026-09-21. Newest measured event . Reaction = percent move vs. the price at the news timestamp.
How FSTR reacts, by analyst action.
| Event | Events | Median 30-min | % positive | Median to close |
|---|---|---|---|---|
| Analyst upgrades | 18 | +0.02% | 50% | -0.13% |
| Analyst downgrades | 14 | +0.12% | 50% | -0.28% |
Last 3 years, pulled 2026-09-21. Reaction = percent move vs. the price at the news timestamp. Counts and medians only. The same measurement runs across every name in the dataset. 4 further classes were observed with fewer than 10 measured events and are not published. See how FSTR ranks against every other measured name →
That’s how FSTR usually reacts — get an email when it moves on news →Email me when FSTR moves on news.
One email per qualifying move — the headline, the measured reaction, and how it compares to FSTR's baseline. Nothing else.
Recent FSTR events, each with its measured reaction.
| Date | Headline | Event | Source | 5-min | To close |
|---|---|---|---|---|---|
| L.B. Foster Company to Present Virtually at Sidoti Small Cap Conference on September 23, 2026 | Press release | GlobeNewswire | — | -0.74% | |
| L.B. Foster Company to Present at Three Part Advisors’ Midwest IDEAS Investor Conference on August 27, 2026, in Chicago, Illinois | Press release | GlobeNewswire | -0.08% | +2.35% | |
| Form 10-Q FOSTER L B CO For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | -0.08% | — | |
| Form 8-K FOSTER L B CO For: Aug 10 | SEC filing · Form 8-K | SEC EDGAR | -2.03% | — | |
| L.B. Foster Announces Second Quarter Results with Highest Second Quarter Operating Cash Flow Since 2017; Reaffirms Full Year 2026 Financial Guidance | Press release | GlobeNewswire | -2.03% | — | |
| L.B. Foster Company to Report Second Quarter 2026 Results on August 10, 2026 | Press release | GlobeNewswire | -0.27% | +0.41% | |
| Form 8-K FOSTER L B CO For: Jul 28 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.60% | |
| L.B. Foster Company Announces Executive Officer Changes | Press release | GlobeNewswire | +0.00% | +1.60% | |
| Salient Releases CompleteView v8.0 with Enhanced Search for Faster Forensic Video Investigation | Press release | PR Web | +2.11% | +1.53% | |
| Form 11-K FOSTER L B CO For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.29% | -1.35% | |
| L.B. Foster Company to Present Virtually at Sidoti Small Cap Conference on June 18, 2026 | Press release | GlobeNewswire | +0.26% | +0.00% | |
| L.B. Foster Company to Present at Three Part Advisors’ East Coast IDEAS Investor Conference on June 11, 2026, in New York City, NY | Press release | GlobeNewswire | +0.46% | +2.10% | |
| Form SD FOSTER L B CO | SEC filing · Form SD | SEC EDGAR | +0.20% | +1.84% | |
| Form 8-K FOSTER L B CO For: May 21 | SEC filing · Form 8-K | SEC EDGAR | — | -0.38% | |
| Form 8-K FOSTER L B CO For: May 20 | SEC filing · Form 8-K | SEC EDGAR | +0.01% | +0.86% | |
| L.B. Foster Company Announces the Appointment of Executive Officers | Press release | GlobeNewswire | -0.03% | +0.82% | |
| Salient Systems Welcomes Steve Bell as Executive Vice President, Sales | Press release | PR Web | +1.27% | +1.18% | |
| Form 10-Q FOSTER L B CO For: Mar 31 | SEC filing · Form 10-Q | SEC EDGAR | -0.19% | +5.78% | |
| Form 8-K FOSTER L B CO For: May 04 | SEC filing · Form 8-K | SEC EDGAR | +2.73% | +10.88% | |
| L.B. Foster Company Announces Strong Sales Growth and Profitability Expansion in 2026 First Quarter; Reaffirms Full Year 2026 Financial Guidance | Press release | GlobeNewswire | +2.73% | +10.88% | |
| L.B. Foster Company to Report First Quarter 2026 Results on May 4, 2026 | Press release | GlobeNewswire | — | +1.10% | |
| Salient Systems Named 2026 Video Surveillance Platform of the Year by Enterprise Security Magazine | Press release | PR Web | +0.69% | +0.30% | |
| Form ARS FOSTER L B CO For: Dec 31 | SEC filing · Form ARS | SEC EDGAR | — | +0.77% | |
| Form DEF 14A FOSTER L B CO For: May 21 | SEC filing · Form DEF | SEC EDGAR | -0.17% | +0.60% | |
| Form DEFA14A FOSTER L B CO | SEC filing · Form DEFA14A | SEC EDGAR | -0.17% | +0.60% | |
| L.B. Foster Company to Present Virtually at Sidoti Small Cap Conference on March 19, 2026 | Press release | GlobeNewswire | — | -0.57% | |
| Form 10-K FOSTER L B CO For: Dec 31 | SEC filing · Form 10-K | SEC EDGAR | +0.39% | +0.22% | |
| Form 8-K FOSTER L B CO For: Mar 03 | SEC filing · Form 8-K | SEC EDGAR | -5.31% | -1.06% | |
| L.B. Foster Company Finishes 2025 with Highest Fourth Quarter Net Sales since 2018, Delivering Strong Profitability Growth and Operating Cash Flow | Press release | GlobeNewswire | -5.31% | -1.06% | |
| L.B. Foster Company to Report Fourth Quarter and Full Year 2025 Results on March 3, 2026 | Press release | GlobeNewswire | — | +1.36% | |
| Form 8-K FOSTER L B CO For: Dec 12 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +0.76% | |
| Form 8-K FOSTER L B CO For: Dec 03 | SEC filing · Form 8-K | SEC EDGAR | — | -0.77% | |
| L.B. Foster Company to Present Virtually at Sidoti’s Year-End Conference on December 10, 2025, and at Singular Research’s Best of the Uncovereds Conference on December 11, 2025 | Press release | GlobeNewswire | — | +0.78% | |
| Form 10-Q FOSTER L B CO For: Sep 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -1.10% | |
| Form 8-K FOSTER L B CO For: Nov 03 | SEC filing · Form 8-K | SEC EDGAR | -7.16% | +1.47% | |
| L.B. Foster Announces Continuing Sales Growth and Robust Cash Generation in Fiscal Third Quarter with Expected Strong Finish to 2025 | Press release | GlobeNewswire | -7.16% | +1.47% | |
| L.B. Foster Company to Report Third Quarter 2025 Results on November 3, 2025 | Press release | GlobeNewswire | -0.30% | -2.04% | |
| L.B. Foster Company to Present Virtually at Sidoti Small Cap Conference on September 18, 2025 | Press release | GlobeNewswire | -0.07% | +0.40% | |
| Form 8-K FOSTER L B CO For: Sep 04 | SEC filing · Form 8-K | SEC EDGAR | — | +0.80% | |
| L.B. Foster Company to Present at Three Part Advisors’ Midwest IDEAS Investor Conference on August 27, 2025, in Chicago, IL | Press release | GlobeNewswire | — | -0.88% | |
| Form 10-Q FOSTER L B CO For: Jun 30 | SEC filing · Form 10-Q | SEC EDGAR | — | -1.57% | |
| Form 8-K FOSTER L B CO For: Aug 11 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | +1.37% | |
| L.B. Foster Announces Strong Second Quarter Results with Organic Growth and Profitability Expansion Expected to Continue Through Balance of 2025 | Press release | GlobeNewswire | +0.00% | +1.37% | |
| L.B. Foster Company to Report Second Quarter 2025 Results on August 11, 2025 | Press release | GlobeNewswire | +0.00% | +0.36% | |
| Form 8-K FOSTER L B CO For: Jun 27 | SEC filing · Form 8-K | SEC EDGAR | — | +5.00% | |
| L.B. Foster Company Completes Successful Amendment to its Revolving Credit Agreement | Press release | GlobeNewswire | — | +5.00% | |
| Form 11-K FOSTER L B CO For: Dec 31 | SEC filing · Form 11-K | SEC EDGAR | +0.00% | -1.49% | |
| L.B. Foster Company to Present at Three Part Advisors’ East Coast IDEAS Investor Conference on June 12, 2025, in New York, NY | Press release | GlobeNewswire | +1.26% | +2.20% | |
| Form SD FOSTER L B CO | SEC filing · Form SD | SEC EDGAR | -0.61% | +0.83% | |
| Form 8-K FOSTER L B CO For: May 22 | SEC filing · Form 8-K | SEC EDGAR | +0.00% | -1.71% |
Each reaction is the move the market actually made, measured from the news timestamp. Headlines link through to the FSTR section they belong to.
Where else FSTR is measured.
FSTR earnings → · Analyst actions → · SEC filings →
Other Industrials names, measured the same way
| Ticker | Events | Median 30-min | % positive |
|---|---|---|---|
| Ducommun Incorporated (DCO) | 332 | -0.04% | 46% |
| Energy Recovery, Inc. (ERII) | 332 | -0.12% | 43% |
| Standex International Corporation (SXI) | 331 | -0.02% | 48% |
| Watts Water Technologies, Inc. Class A (WTS) | 329 | +0.02% | 54% |
Same sector, same measurement: percent move vs. the price at the news timestamp, read at 30 minutes. Sample sizes differ, so the medians are comparable but the confidence behind them is not.
All Industrials names, measured the same way →
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Every name we’ve measured, in one place.
How the numbers are made.
How is L.B. Foster Company's median reaction calculated?
Every labeled FSTR news event is measured from its own timestamp: the last trade before the news is the base price, and the move is read at fixed horizons — 30 minutes of trading, then the close. The median across 332 events is what this page reports. Point-in-time, zero look-ahead: no event borrows information from a later one.
What counts as a positive reaction?
Any event whose price move is above zero at the horizon, relative to the last trade before the news timestamp. 54% of FSTR's measured events are up at 30 minutes; the rest close the window flat or negative.
How often is this page updated?
The news table refreshes automatically as new events are labeled and priced. The reaction medians are re-pulled in batches from the dataset — the figures here are as of 2026-09-21.
Does FSTR's past reaction predict its next one?
No. These are realized facts about past events, not forecasts. They describe a distribution — they say nothing certain about any future move.