# EDGAR Filing Document

**Accession Number:** 0000277509
**File Stem:** 0001628280-26-039074
**Filing Date:** 2026-5
**Character Count:** 25024
**Document Hash:** 6ddde7abd7fb4b9a967c9f34015e8216
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001628280-26-039074.hdr.sgml**: 20260529

**ACCESSION NUMBER**: 0001628280-26-039074

**CONFORMED SUBMISSION TYPE**: SD

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260529

**DATE AS OF CHANGE**: 20260529

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** FEDERAL SIGNAL CORP /DE/
- **CENTRAL INDEX KEY:** 0000277509
- **STANDARD INDUSTRIAL CLASSIFICATION:** MOTOR VEHICLES & PASSENGER CAR BODIES [3711]
- **ORGANIZATION NAME:** 04 Manufacturing
- **EIN:** 361063330
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SD
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-06003
- **FILM NUMBER:** 261041348

**BUSINESS ADDRESS:**
- **STREET 1:** 1333 BUTTERFIELD ROAD
- **STREET 2:** SUITE 500
- **CITY:** DOWNERS GROVE
- **STATE:** IL
- **ZIP:** 60515
- **BUSINESS PHONE:** 630-954-2000

**MAIL ADDRESS:**
- **STREET 1:** 1333 BUTTERFIELD ROAD
- **STREET 2:** SUITE 500
- **CITY:** DOWNERS GROVE
- **STATE:** IL
- **ZIP:** 60515

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** FEDERAL SIGN & SIGNAL CORP /DE/
- **DATE OF NAME CHANGE:** 19600201

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**

**Washington, D.C. 20549**

**___________________________________** 

**FORM SD**

**___________________________________** 

**Specialized Disclosure Report**

![fsslogo_cover033114a08.jpg](fsslogo_cover033114a08.jpg)

**FEDERAL SIGNAL CORPORATION**

*(Exact name of registrant as specified in its charter)*

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-6003** | **36-1063330** |
| *(State or other jurisdiction of<br>incorporation or organization)* | *(Commission File Number)* | *(I.R.S. Employer<br>Identification No.)* |

---

**1333 Butterfield Road, Downers Grove, Illinois** 

*(Address of principal executive offices)*

**60515** 

*(Zip code)*

**Diane I. Bonina, (630) 954-2000** 

*(Name and telephone number, including area code, of the person to contact in connection with this report.)*

**___________________________________**

Check the appropriate box to indicate the rule pursuant to which this form is being filed, and provide the period to which the information in the form applies:

---

| | |
|:---|:---|
| ☑ | Rule 13p-1 under the Securities Exchange Act (17 CFR 240.13p-1) for the reporting period from January 1 to December 31, 2025. |
| ☐ | Rule 13q-1 under the Securities Exchange Act (17 CFR 240.13q-1) for the fiscal year ended December 31, 2025. |

---

------

**Section 1 – Conflict Minerals Disclosure**

**Item 1.01 Conflict Minerals Disclosure and Report**

Federal Signal Corporation (the "Company") is filing this Specialized Disclosure Report ("Form SD"), including the Conflict Minerals Report attached as Exhibit 1.01 hereto, for the reporting period January 1, 2025 to December 31, 2025 to comply with Rule 13p-1 of the Securities Exchange Act of 1934, as amended. This report is publicly available on the Company's website at https://www.federalsignal.com/corporate-governance. Information on the Company's website is not and should not be considered part of, nor is it incorporated by reference into, this Form SD.

**Item 1.02 Exhibit**

A copy of Federal Signal Corporation's Conflict Minerals Report is provided as Exhibit 1.01 to this Form SD, is publicly available at https://www.federalsignal.com/corporate-governance and is incorporated by reference herein.

**Section 2 – Resource Extraction Issuer Disclosure**

**Item 2.01 Resource Extraction Issuer Disclosure and Report**

Not applicable.

**Section 3 – Exhibits**

**Item 3.01 Exhibits**

The following exhibit is filed as part of this Form SD:

Exhibit 1.01 **–** Federal Signal's 2025 Conflict Minerals Report.

------

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the duly authorized undersigned.

---

| | | |
|:---|:---|:---|
| | | Federal Signal Corporation |
| Date: | May 29, 2026 | /s/ Diane I. Bonina |
| | | Diane I. Bonina |
| | | *Vice President, General Counsel and Secretary* |

---

## Exhibit 1.01

**EXHIBIT 1.01**

**Federal Signal Corporation**

**Conflict Minerals Report**

**For The Year Ended December 31, 2025**

**Background**

Federal Signal Corporation ("Federal Signal," the "Company," "we," "us," or "our") has prepared this Conflict Minerals Report (this "Report") for the year ended December 31, 2025, to comply with Rule 13p-1 (the "Rule") and Form SD ("Form SD") under the Securities Exchange Act of 1934 (the "1934 Act"). The Securities and Exchange Commission (the "SEC") adopted the Rule, as mandated by Section 1502 of the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010, to implement reporting and disclosure requirements related to tantalum, tin, tungsten, and gold (collectively, "Conflict Minerals"). The rules impose certain reporting obligations on public companies that manufacture, or contract to manufacture, products containing Conflict Minerals that are necessary to the functionality or production of their products.

Please refer to the Rule, Form SD, and the 1934 Act for definitions of capitalized terms used in this Report unless otherwise defined herein. The Report presented herein is not audited as such an audit is not required under the Rule at this time.

**Company Overview**

Federal Signal, founded in 1901, was reincorporated as a Delaware corporation in 1969. The Company designs, manufactures, and supplies a suite of products and integrated solutions for municipal, governmental, industrial, and commercial customers. The Company's portfolio of products that it manufactures includes (i) vehicles and equipment for maintenance and infrastructure end-markets, including sewer cleaners, industrial vacuum loaders, vacuum- and hydro-excavation trucks (collectively, "safe-digging trucks"), street sweepers, waterblasting equipment, refuse collection vehicles, road-marking and line-removal equipment, dump truck bodies, trailers, metal extraction support equipment, and multi-purpose maintenance vehicles, and (ii) public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems, and general alarm/public address systems. In addition, the Company engages in the sale of parts, service and repair, equipment rentals, and training as part of a comprehensive aftermarket offering to its customers. As of December 31, 2025, the Company operated 26 principal manufacturing facilities in five countries and provides products and integrated solutions to customers in all regions of the world. The Company purchases a wide variety of materials and fabricated components from around the world for use in the manufacture of its products, although the majority of its purchases in 2025 were from North American sources.

Products manufactured and supplied, and services rendered, by the Company are divided into two reportable segments: the Environmental Solutions Group and the Safety and Security Systems Group.

In accordance with the Rule and Instruction 3 to Item 1.01 of Form SD, this Report does not include the products of entities that were acquired by the Company fewer than eight months from the beginning of the reporting period for this Report.

*Environmental Solutions Group*

The Company's Environmental Solutions Group is a leading manufacturer and supplier of a full range of street sweepers, sewer cleaners, industrial vacuum loaders, safe-digging trucks, high-performance waterblasting equipment, road-marking and line-removal equipment, refuse collection vehicles, dump truck bodies, trailers, metal extraction support equipment, and multi-purpose maintenance vehicles. The Environmental Solutions Group manufactures vehicles and equipment in the United States ("U.S.") and Canada that are sold under the Elgin<sup>®</sup>, Vactor<sup>®</sup>, Guzzler<sup>®</sup>, TRUVAC<sup>®</sup>, Westech<sup>TM</sup>, Jetstream<sup>®</sup>, Blasters, Mark Rite Lines, Hog, New Way<sup>®</sup>, Trackless, Ox Bodies<sup>®</sup>, Crysteel<sup>®</sup>, J-Craft<sup>®</sup>, Duraclass<sup>®</sup>, Rugby<sup>®</sup>, Travis<sup>®</sup>, OSW, NTE, WTB, Ground Force, TowHaul<sup>®</sup>, Bucks<sup>®</sup> and Switch-N-Go<sup>®</sup> brand names. The Environmental Solutions Group's product offerings also include certain products manufactured by other companies, such as refuse collection vehicles. Products are sold to both municipal and industrial customers either through a dealer network or direct sales to service customers generally depending on the type and geographic location of the customer. In addition to vehicle and equipment sales, the Environmental Solutions Group also engages in the sale of parts, service and repair, equipment rentals, and training as part of a comprehensive aftermarket offering to its current and potential customers through its service centers, which are located across North America.

Under the Elgin brand name, the Company sells a leading U.S. brand of street sweepers that are primarily designed for large-scale cleaning of curbed streets, parking lots, and other paved surfaces and that utilize mechanical sweeping, vacuum, and recirculating air technology. Vactor is a leading manufacturer of equipment solutions for cleaning and maintaining sewers and catch basins. Under the TRUVAC brand name, the Company manufactures a range of premium vacuum- and hydro-excavation trucks designed to satisfy the safe-digging requirements of businesses or organizations that locate and verify underground utility

------

lines and pipes. Guzzler is a leader in industrial vacuum loaders used to manage industrial waste or recover and recycle valuable raw materials. Westech is a manufacturer of high-quality, rugged vacuum-excavation trucks. Jetstream manufactures high-pressure waterblasting equipment and accessories for commercial and industrial cleaning and maintenance operations. New Way is a leading U.S.-based designer and manufacturer of refuse collection vehicles. Blasters is a leading U.S. manufacturer of truck-mounted waterblasting equipment. Mark Rite Lines Equipment Company, Inc. ("MRL") and Hog are U.S. manufacturers of truck-mounted and ride-on road-marking and line-removal equipment. Trackless is a leading Canadian manufacturer of off-road, multi-purpose maintenance vehicles and attachments. Ground Force and TowHaul are leading manufacturers of specialty vehicles that support the extraction of metals. Truck Bodies & Equipment International ("TBEI") manufactures and sells dump truck bodies and trailers under the Ox Bodies, Crysteel, J-Craft, Duraclass, Rugby, Travis, OSW, NTE, and WTB brand names, as well as a range of interchangeable truck body systems and waste-hauling products under the Bucks and Switch-N-Go brand names.

*Safety and Security Systems Group*

The Company's Safety and Security Systems Group is a leading manufacturer and supplier of comprehensive systems and products that law enforcement, fire rescue, emergency medical services, campuses, military facilities, and industrial sites use to protect people and property. Offerings include systems for community alerting, emergency vehicles, first responder interoperable communications, and industrial communications. Specific products include public safety equipment, such as vehicle lightbars and sirens, industrial signaling equipment, public warning systems and general alarm/public address systems. Products are sold under the Federal Signal<sup>TM</sup>, Federal Signal VAMA<sup>®</sup>, and Victor<sup>®</sup> brand names. The Safety and Security Systems Group operates manufacturing facilities in the U.S., Spain, the United Kingdom ("U.K."), and South Africa.

**Conflict Minerals Policy**

The Company and its subsidiaries are committed to ensuring the safety, health, and protection of people and the environment through the products we manufacture and the policies we follow. We promote these principles within our business practices, our code of conduct (including the code of conduct prescribed for our suppliers), and our Conflict Minerals policy. The preceding policies and other materials are available on our corporate website (https://www.federalsignal.com/corporate-governance).

Federal Signal's Conflict Minerals policy and its supplier code of conduct reflect the Company's commitment to avoiding the knowing use of Conflict Minerals in our products which directly or indirectly finance, benefit, provide support to, contribute to, assist with, or facilitate armed conflict in the Democratic Republic of Congo and adjoining countries (the "Covered Countries"). If the Company determines that any supplier is violating this policy, we reserve the right to either suspend or discontinue the use of the supplier in a timely fashion or require the supplier to commit to a suitable corrective action or risk mitigation plan. Any supplier's continued failure to adhere to Federal Signal's policies and/or refusal on its part to address issues of concern may lead to suspension or termination of the Company's business relationship with the supplier.

**Supply Chain Due Diligence**

Federal Signal conducted a reasonable country of origin inquiry to seek to determine the source and chain of custody of Conflict Minerals in the components and materials supplied to the Company that are contained in its products. Federal Signal designed its due diligence measures to be in reasonable conformity, in all material respects, with the internationally recognized due diligence framework in the Organisation for Economic Co-operation and Development Due Diligence Guidance for Responsible Supply Chains of Minerals from Conflict-Affected and High-Risk Areas and related supplements for each of the Conflict Minerals (the "OECD Guidance").

Federal Signal does not directly purchase unrefined Conflict Minerals or any other raw metal ores from the Covered Countries or elsewhere. Rather, the Company purchases components that are used in the manufacture and assembly of its products. Thus, the Company is far removed from the sources of ore from which Conflict Minerals are produced and the smelters and refiners that process them, and has no first-hand information regarding either. The efforts undertaken by Federal Signal to identify the countries of origin of those metals reflect our circumstances and position in the supply chain, and we are dependent on our suppliers, and their suppliers in turn, and so on, to provide accurate and complete information regarding the source and chain of custody of Conflict Minerals in the components and materials supplied to the Company. The information available globally on the traceability and sourcing of these metals is limited at this time, and this situation is not unique to Federal Signal.

Summarized below is the five-step framework set forth in the OECD Guidance and the related due diligence process we undertook.

*Step One: Establish a Strong Company Management System* 

a.Internal engagement – We trained relevant employees on our Conflict Minerals program and reporting obligations.

------

b.Conflict Minerals working group – We established a cross-functional Conflict Minerals working group that included employee representatives from each of our business groups' supply chains and legal/compliance. The group was structured to administer the Company's Conflict Minerals program and to ensure critical information, including the Company's Conflict Minerals policy and annual questionnaire, reaches relevant suppliers. The group participates in monthly conference calls to (i) discuss progress regarding our reasonable country of origin inquiries to suppliers and due diligence efforts, (ii) address any questions or issues that arise during this process, and (iii) consider legal developments concerning the SEC's Conflict Minerals rule.

c.Conflict Minerals policy – We have adopted a Conflict Minerals policy, and we have amended our supplier code of conduct to incorporate our expectations for our suppliers regarding (i) their responsibility to take reasonable and feasible measures to prevent Conflict Minerals from being included in the components they sell to Federal Signal unless the Conflict Minerals either did not originate from a Covered Country or the sourcing of the Conflict Minerals did not directly or indirectly finance or benefit armed militant groups in the region of the Covered Countries, (ii) their obligation to work with their respective suppliers to ascertain the presence of Conflict Minerals in their products, and (iii) their obligation to respond to and return to Federal Signal our annual supplier questionnaire regarding the presence of Conflict Minerals in their products and to use reasonable and good faith efforts to determine the country of origin or processing facility for any such Conflict Minerals. Both policies reside on our corporate website and both will be reviewed and updated as necessary.

d.Supplier engagement – Federal Signal provided educational materials to our queried suppliers, including information on the Conflict Minerals disclosure requirements as well as recommendations for developing, implementing, and documenting a Conflict Minerals compliance program.

e.Company-level grievance mechanism – As recommended by the OECD Guidance, we have a long-standing compliance hotline that is available as a grievance mechanism for, among other matters, Conflict Minerals issues, whereby callers can communicate concerns ultimately to our Chief Compliance Officer.

f.Records management – Federal Signal maintains records relating to our Conflict Minerals program in accordance with our record retention guidelines.

*Step Two: Identify and Assess Risk in the Supply Chain*

a.Identify suppliers – Members of our Conflict Minerals working group conducted an evaluation of the suppliers of the components for the products that we manufacture to identify the suppliers that would be in-scope for the risk assessment process.

b.Conduct Reasonable Country of Origin Inquiry ("RCOI") – We conducted a supply chain survey utilizing the Conflict Minerals Reporting Template (the "CMRT") developed by the Electronic Industry Citizenship Coalition and the Global e-Sustainability Initiative to query our suppliers about (i) the country of origin for any Conflict Mineral in products or materials that they supply, (ii) the smelter or refiner for any such Conflict Mineral, (iii) the supplier's Conflict Minerals policy, and (iv) the supplier's engagement with its direct suppliers.

c.Completed additional follow-up – We contacted direct suppliers that did not respond to our request for Conflict Minerals information by the requested date and again requested that they complete the CMRT. Multiple email reminders were sent to non-responsive suppliers.

*Step Three: Design and Implement a Strategy to Respond to Identified Risks*

a.We encourage our suppliers to submit complete and accurate information to mitigate the risk that we inadvertently finance or benefit armed groups in the Covered Countries via Conflict Minerals within the products that we manufacture.

b.As Federal Signal reviews supplier responses to the RCOI, known risks will be evaluated and opportunities to mitigate those and other risks will be assessed on an occurrence basis. We will continue to attempt to engage unresponsive suppliers and evaluate options for corrective actions.

*Step Four: Carry Out Independent Third Party Audit of Smelter/Refiner's Due Diligence Practices*

Federal Signal does not perform direct audits of Conflict Minerals smelters and refiners within its supply chain since it is a downstream consumer and is many steps removed from smelters and refiners that provide minerals and ores.

*Step Five: Report on Supply Chain Due Diligence*

------

We file a Form SD and Conflict Minerals Report with the SEC on an annual basis. Our Form SD and Conflict Minerals Report are also available on our corporate website (https://www.federalsignal.com/corporate-governance).

**Due Diligence Results**

Because of the diversity of our products and the global nature of our supply chain, we rely on our suppliers to provide us with information about the source and content of components that we purchase from them and incorporate into our products. Factors that affect the accuracy of CMRT supplier-provided information, which in turn can affect the accuracy of our Report, include, but are not limited to, incomplete supplier data or smelter data, errors or omissions by suppliers or smelters, evolving certifications of smelters, incomplete information from industry or other third-party sources, and other issues. Thus, as a downstream purchaser of Conflict Minerals, our due diligence measures can provide reasonable, but not absolute, assurance regarding the country of origin of the Conflict Minerals.

Despite efforts to follow-up with suppliers who did not initially respond, we still have not received responses from many surveyed suppliers. The form and content of survey responses varied, and of the suppliers who did respond, we noted varying degrees of cooperation and encountered many challenges in obtaining and analyzing the information we requested:

a.Many of our suppliers are either private companies or international companies not subject to the Rule. While some such suppliers choose to respond to the CMRT survey, others chose not to do so. The latter group can include small private companies which may lack the inclination, resources, or sophistication to commit to collect, in whole or in part, the information requested by the CMRT. This group can also include large manufacturers not subject to the Rule.

b.Almost all of our direct suppliers are many levels removed in the supply chain from the mining and smelting of the Conflict Minerals. Some of our suppliers are similar to us in that they are waiting for their direct suppliers to provide them with definitive declarations, and their direct suppliers are awaiting definitive declarations from their direct suppliers, and so on.

c.Supplier declarations we received may have been at a company or division level rather than at a level directly relating to a supplier's part or component number that we incorporate into our products. Unless a supplier can provide a declaration that either (i) all of the products they sell are or are not free of Conflict Minerals or (ii) the specific products they sell to us are or are not free of Conflict Minerals, we would be unable to determine whether the Conflict Minerals that the supplier reported were contained within the components of our products or validate that any identified smelter or refiner was actually in our supply chain. In our due diligence, we may receive declarations indicating a smelter sourced Conflict Minerals from a Covered Country; however, since the suppliers in question may sell hundreds or thousands of different products to hundreds or thousands of different customers and provided a "company" level declaration, we have no means of determining whether or not the specific products we buy from them contain such Conflict Minerals.

d.Some declarations may indicate the presence of the Conflict Minerals and may not include a smelter listing, and when a smelter listing is provided, it may contain duplications and data may be missing. Some of the declarations we receive may indicate that somewhere in the supply chain, materials were purchased from a smelter which reported sourcing Conflict Minerals from a Covered Country, but may not have provided any further information with respect to the identity or conflict-free status of the supplier or the smelter in question.

e.Some suppliers may return declarations that were in an improper format or otherwise completed in a manner that rendered them unloadable to the Company's third-party software program.

f.Some of our suppliers may be parts distributors who source a wide variety of parts from thousands of suppliers and sell to an even greater number of customers, and have stated in the past that the Rule does not apply to them.

Based on our reasonable and good-faith RCOI and due diligence efforts, Federal Signal is unable to determine with certainty the country of origin of all Conflict Minerals in our products, the mine or source of their origin, or the facilities and smelters used to process them.

**Additional Risk Mitigation**

We have undertaken the following steps to further mitigate the risk that the Conflict Minerals in our products could benefit armed groups in a Covered Country:

a.Continued to communicate our expectations regarding Conflict Minerals to our direct suppliers, and to engage with them in an effort to increase the response rate to the CMRT survey as well as the quality of information received from surveyed suppliers, and

------

b.Encouraged our suppliers to use smelters and refiners that have been certified as Conflict Minerals free.