FSTRNasdaq

FOSTER L B CO

Wholesale-Metals Service Centers & of fices · PA · CIK 352825

FOSTER L B CO provides engineered products and services that build and support infrastructure globally

red 8-K · 90d

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$443M

Market cap

$44.94

Last close

+0.4%

+2.7%

115K

Volume

Price · last 39 sessions+22.8%

May 4L $36.60 · H $44.94Jun 29

223

Total filings

Jun 16, 2026

Last filing

12/31

Fiscal year end

All 8-K · 101 10-Q · 34 11-K · 25 DEFA14A · 13 10-K · 12 DEF 14A · 12 SC 13G · 10 8-K/A · 8

Insider Activity

In the 90 days to Mar 30, 2026: 2 sold $3.5M.

Date	Insider	Action	Shares	Price	Value
Mar 30, 2026	22nw, LpTenPercentOwner	Sell	1,887	$28.01	$53K
Mar 27, 2026	22nw, LpTenPercentOwner	Sell	862	$28.02	$24K
Mar 26, 2026	22nw, LpTenPercentOwner	Sell	8,968	$28.02	$251K
Mar 25, 2026	22nw, LpTenPercentOwner	Sell	2,716	$28.09	$76K
Mar 24, 2026	22nw, LpTenPercentOwner	Sell	25,889	$28.19	$730K
Mar 23, 2026	22nw, LpTenPercentOwner	Sell	78,414	$28.51	$2.2M
Mar 4, 2026	22nw Fund, LpTenPercentOwner	Sell	5,124	$31.99	$164K
Dec 12, 2025	22nw Fund, LpTenPercentOwner	Sell	13,512	$26.79	$362K
Dec 11, 2025	22nw Fund, LpTenPercentOwner	Sell	34,025	$26.79	$912K
Dec 10, 2025	22nw, LpTenPercentOwner	Sell	11,248	$26.83	$302K
Dec 9, 2025	22nw, LpTenPercentOwner	Sell	4,800	$26.93	$129K
Dec 8, 2025	22nw, LpTenPercentOwner	Sell	9,765	$27.28	$266K
Dec 1, 2025	English Aron R.TenPercentOwner	Sell	101	$26.82	$3K
Nov 28, 2025	English Aron R.TenPercentOwner	Sell	1,307	$27.09	$35K
Nov 25, 2025	22nw, LpTenPercentOwner	Sell	1,725	$26.94	$46K
Nov 24, 2025	22nw, LpTenPercentOwner	Sell	27,003	$26.84	$725K
Nov 21, 2025	22nw, LpTenPercentOwner	Sell	3,412	$27.03	$92K
Nov 17, 2025	22nw Gp, Inc.TenPercentOwner	Sell	400	$27.00	$11K
Nov 14, 2025	22nw Gp, Inc.TenPercentOwner	Sell	2,247	$27.00	$61K
Nov 13, 2025	22nw, LpTenPercentOwner	Sell	1,600	$27.00	$43K

Open-market buys & sells (Form 4, transaction codes P/S). Source: SEC structured insider data.

What Changed

Risk factors · Mar 7, 2025 → Mar 5, 2026

20 added · 41 removed between the two most recent 10-Ks. The risks a company starts — or stops — disclosing are often the story.

Newly disclosed

In 2025, the US announced the imposition of widespread tariffs, including tariffs on steel imports, which have been legally challenged and our national tariff policy is subject to volatility.
We may not have the resources or technical sophistication to anticipate or prevent current or rapidly evolving types of cyber attacks including data and security breaches, malware, ransomware, hacking, and identity theft, as well as emerging threats enabled by artificial intelligence (“AI”) such as AI-generated phishing, deepfakes for social engineering, or unauthorized use of generative AI tools that could inadvertently expose sensitive data.
Our Board, often through its Audit Committee, oversees cybersecurity risks as part of its broader enterprise risk management responsibilities, with input from management regarding the assessment and mitigation of such threats, including those involving rapidly evolving technologies like AI.
See Part II, Item 8, Financial Statements and Supplementary Data, Note 13 to the Consolidated Financial Statements, contained in this Annual Report on Form 10-K, for additional discussion of our deferred taxes.
The former Board Observer resigned from the Board in December 2025 and the cooperation agreement expired in January 2026. 22NW is a greater than 5% owner of Company stock.
Business and Operational Risks 9 Table of Contents Our inability to successfully manage acquisitions, divestitures, and other significant transactions or to otherwise execute our strategic plan could harm our financial results, business, and prospects.
Sustained declines or significant and frequent fluctuations in the price of oil and natural gas may have a material and adverse effect on our operations and financial condition. 10 Table of Contents Volatility in energy prices may also impact the Company’s plant costs, as well as overall conditions in passenger transit markets served.
Increased competition for skilled employees, changes in demographics, rising labor costs, and the need to provide competitive compensation and development opportunities could negatively affect our ability to compete and lead to a reduction in our profitability.
The US Foreign Corrupt Practices Act and other similar global anti-corruption laws, such as the UK Bribery Act and the proposed EU Anti-Corruption Directive, prohibit improper payments and other corrupt practices intended to obtain or retain business.
Environmental laws and regulations are subject to frequent amendment and reinterpretation, and although the current US federal administration has taken steps to reduce environmental regulation, these regulations have in the past and may again in the future become more stringent.
Executing our strategy and being successful as a company depends on the ability to attract, develop, and retain talented personnel, including our Chief Executive Officer, the executive team, and other highly skilled employees.
Failure to maintain effective internal controls over financial reporting could have a material adverse effect on the Company’s financial condition and the trading price of its common stock.

No longer disclosed

As previously disclosed, on November 1, 2024, the Company filed Amendment No. 1 on Form 10-K/A (“Amended Form 10-K”) to amend certain items in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2023, which was originally filed with the Securities and Exchange Commission (the “SEC”) on March 6, 2024 (the “Original Form 10-K”).
The Amended Form 10-K corrected certain immaterial errors and identified a material weakness in our internal control over financial reporting (“ICFR”) that caused our management to conclude that we did not maintain effective ICFR as of December 31, 2023, which could, if not remediated, result in additional material misstatements in our interim and annual Consolidated Financial Statements.
Subsequent to the issuance of our Consolidated Financial Statements as of and for the year ended December 31, 2023, we identified an immaterial error in the Original Form 10-K related to the classification of the $1,403 in exit costs incurred in 2023 associated with the discontinuation of the Company’s Bridge Products grid deck product line and determined to correct this immaterial classification error and certain other immaterial errors.
Accordingly, on November 4, 2024, the Company filed (i) Amendment No. 1 on Form 10-Q/A (the “Q1 Amended Form 10-Q”) to amend and restate certain items in the Company's Quarterly Report on Form 10-Q for the quarterly period ended March 31, 2024, which was originally filed with the SEC on May 7, 2024 and (ii) Amendment No. 1 on Form 10-Q/A (the “Q2 Amended Form 10-Q”) to amend and restate certain items in the Company's Quarterly Report on Form 10-Q for the quarterly period ended June 30, 2024, which was originally filed with the SEC on August 6, 2024.
As a result of the aforementioned errors, the issuance of the Company’s restated Quarterly Reports on Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024 and the issuance of our 2023 Amended Form 10-K, we are subject to potential additional risks and uncertainties, including unanticipated legal and accounting costs, litigation, possible future new or related governmental inquiries, proceedings, or investigations, and loss of investor confidence or reputational harm to our business. 13 T able of Contents We identified a material weakness in ICFR that caused our management to conclude that we did not maintain effective ICFR as of December 31, 2023, and subsequent interim periods in 2024, due to the lack of an effectively designed control related to the accounting for, and disclosure of, non-recurring complex transactions.
See Part II, Item 8, Financial Statements and Supplementary Data, Note 13 to the Consolidated Financial Statements, contained in this Annual Report on Form 10-K, for additional discussion of our deferred taxes. 15 T able of Contents Shifting federal, state, local, and foreign regulatory policies impose risks to our operations.
We may not have the resources or technical sophistication to anticipate or prevent current or rapidly evolving types of cyber attacks including data and security breaches, malware, ransomware, hacking, and identity theft.
In addition, on October 7, 2024 (the “Determination Date”), the Audit Committee concluded that the classification of the $3,477 gain on the sale of a former joint venture facility in Magnolia, TX was an error in the Company’s previously issued Unaudited Condensed Consolidated Statements of Operations for the three month period ended March 31, 2024 and the six month period ended June 30, 2024, and that such statements should be restated to correct such error.
Adverse publicity and potential concerns from our customers arising from the required restatements of the Company’s Quarterly Reports on Form 10-Q for the quarters ended March 31, 2024 and June 30, 2024 could have an adverse effect on our business and financial condition.
The EU-UK Trade and Cooperation Agreement was agreed in principle and became provisionally operative on January 1, 2021, and formally in force on May 1, 2021, and terms of this new relationship between the UK and the EU remain subject to uncertainties.
Pursuant to a June 2016 referendum, the UK left the EU on January 31, 2020, commonly referred to as “Brexit.” The UK government and the EU operated under a transitional arrangement that expired on December 31, 2020.
We also determined that our disclosure controls and procedures were not effective as of December 31, 2024 for the same reason, resulting in a material weakness.

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