Who signed the Fuel Tech (FTEK) Form 8-K related to the corporate presentation?

The Form 8-K was signed on behalf of Fuel Tech, Inc. by Bradley W. Johnson, who is identified as Vice President, General Counsel and Secretary, dated September 18, 2026.

Fuel Tech posts updated corporate presentation

Q: What did Fuel Tech, Inc. (FTEK) announce in this Form 8-K?

Fuel Tech, Inc. announced that it posted an updated corporate presentation on its website on September 14, 2026, and furnished that presentation as Exhibit 99.1 to this Form 8-K under a Regulation FD disclosure item.

Q: How is the Fuel Tech (FTEK) corporate presentation treated under SEC rules?

The corporate presentation furnished as Exhibit 99.1 is provided pursuant to Item 7.01, is expressly stated as being furnished rather than filed, and is not subject to Section 18 liabilities nor incorporated into Securities Act registration statements.

Q: Does this Fuel Tech (FTEK) 8-K include new financial results or earnings data?

No. The report describes the furnishing of an updated corporate presentation as Exhibit 99.1. It does not present earnings data or financial statements within the text of this Form 8-K itself.

Fuel Tech, Inc. furnished an updated corporate presentation as a Regulation FD disclosure, explicitly stating the materials are not deemed filed under the Exchange Act.

Available on EDGAR 09/18/2026 - 04:03 PM EDT Accepted by SEC EDGAR 09/18/2026 - 04:02 PM EDT

Filing Impact

(Moderate)

Filing Sentiment

(Neutral)How Sentiment works

Sentiment and the balance of points

Rhea-AI Sentiment reads the wording of the document, how positive or negative its language is on a 1 to 5 scale. The balance of points shown with the takes weighs what the document actually discloses, so the two can disagree, for example when a trial that missed its main goal is described in upbeat language.

How Sentiment works How the balance works

Form Type

8-K

Rhea-AI Filing Summary

Fuel Tech, Inc. (FTEK) reported that on September 14, 2026 it posted an updated corporate presentation on its website, which is furnished as Exhibit 99.1 to this report. The materials are provided under a Regulation FD disclosure and are not deemed filed or incorporated into Securities Act registration statements.

8-K Event Classification

2 items: 7.01, 9.01

2 items

Item 7.01 Regulation FD Disclosure Disclosure

Material non-public information disclosed under Regulation Fair Disclosure, often investor presentations or guidance.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, or exhibit attachments filed with this report.

Key Terms

corporate presentation, Emerging growth company, furnished pursuant to Item 7.01, incorporated herein by reference, +1 more

5 terms

corporate presentation financial

"posted on its website an updated corporate presentation, a copy of which"

Emerging growth company regulatory

"Check the appropriate box below if the filing is intended ... Emerging growth company"

An emerging growth company is a recently public or smaller public firm that qualifies for temporary, lighter regulatory and disclosure rules to reduce the cost and effort of being public. For investors, it means the company may provide less historical financial detail and face fewer reporting requirements than larger firms, so it can grow more quickly but also carries higher uncertainty—like buying a promising early-stage product with fewer user reviews.

furnished pursuant to Item 7.01 regulatory

"is being furnished pursuant to Item 7.01"

incorporated herein by reference regulatory

"a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by reference"

Cover Page Interactive Data File technical

"104 | | Cover Page Interactive Data File (embedded within the Inline XBRL document)"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Fuel Tech, Inc. (FTEK) announce in this Form 8-K?

Fuel Tech, Inc. announced that it posted an updated corporate presentation on its website on September 14, 2026, and furnished that presentation as Exhibit 99.1 to this Form 8-K under a Regulation FD disclosure item.

How is the Fuel Tech (FTEK) corporate presentation treated under SEC rules?

The corporate presentation furnished as Exhibit 99.1 is provided pursuant to Item 7.01, is expressly stated as being furnished rather than filed, and is not subject to Section 18 liabilities nor incorporated into Securities Act registration statements.

Where can investors find the updated Fuel Tech (FTEK) corporate presentation?

Fuel Tech states that the updated corporate presentation was posted on its website on September 14, 2026 and is also included with this report as Exhibit 99.1, titled “Fuel Tech, Inc. Corporate Presentation dated September 14, 2026.”

Does this Fuel Tech (FTEK) 8-K include new financial results or earnings data?

No. The report describes the furnishing of an updated corporate presentation as Exhibit 99.1. It does not present earnings data or financial statements within the text of this Form 8-K itself.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT
Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported) September 14, 2026

FUEL TECH, INC.

(Exact name of registrant as specified in its charter)



Delaware (State or other jurisdiction of incorporation)	001-33059 (Commission File Number)	20-5657551 (IRS Employer Identification No.)

Fuel Tech, Inc.
27601 Bella Vista Parkway
Warrenville, IL 60555-1617
630-845-4500

(Address and telephone number of principal executive offices)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock	FTEK	NASDAQ Capital Market

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provision:

☐	Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐	Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐	Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐	Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

ITEM 7.01.

Regulation FD Disclosure

On September 14, 2026 Fuel Tech, Inc., a Delaware corporation, posted on its website an updated corporate presentation, a copy of which is attached hereto as Exhibit 99.1 and incorporated herein by reference.

The foregoing information, including the presentation attached hereto as an exhibit, is being furnished pursuant to Item 7.01 of this Current Report and shall not be deemed “filed” for the purposes of Section 18 of the Securities and Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that Section. This information shall not be incorporated by reference into any registration statement pursuant to the Securities Act of 1933, as amended.

Item 9.01

Financial Statements and Exhibits

(d)		Exhibits

99.1		Fuel Tech, Inc. Corporate Presentation dated September 14, 2026.

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

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 undersigned hereunto duly authorized.