Fuel Tech: Grace & White reports 4.94% passive stake

The reported 4.94% stake falls within the disclosure's category for ownership of 5% or less of a class.

Rhea-AI Filing Summary

Fuel Tech, Inc. (FTEK) Amendment No. 6 reports that Grace & White, Inc. beneficially owned 1,541,307 common shares, or 4.94% of the class. It lists sole voting power over 499,360 shares and sole dispositive power over 1,541,307 shares, with no shared voting or dispositive power. Marc Ravitz, Executive Vice President, signed the amendment.

Key Figures

Beneficial ownership: 1,541,307 shares Percentage of class: 4.94% Sole voting power: 499,360 shares +1 more

4 metrics

Beneficial ownership 1,541,307 shares Grace & White, Inc.; Fuel Tech common stock

Percentage of class 4.94% Grace & White, Inc.; Fuel Tech common stock

Sole voting power 499,360 shares Grace & White, Inc.

Sole dispositive power 1,541,307 shares Grace & White, Inc.

Key Terms

beneficially owned, Sole power to vote or to direct the vote, Sole power to dispose or to direct the disposition of

3 terms

beneficially owned regulatory

"Amount beneficially owned: 1,541,307"

Beneficially owned describes securities or assets where a person has the economic rights and control—such as the right to receive dividends and to direct voting—even if legal title is held in another name. Think of it like having the keys and using a car that’s registered to someone else: you get the benefits and make decisions. Investors care because beneficial ownership reveals who truly controls value and voting power, affecting corporate decisions and takeover dynamics.

Sole power to vote or to direct the vote regulatory

"Sole power to vote or to direct the vote: 499,360"

Sole power to dispose or to direct the disposition of regulatory

"Sole power to dispose or to direct the disposition of: 1,541,307"

FAQ

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

How many FTEK shares did Grace & White report owning?

Grace & White, Inc. reported beneficial ownership of 1,541,307 Fuel Tech common shares, equal to 4.94% of the class. It reported sole voting power over 499,360 shares and sole dispositive power over 1,541,307 shares.

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

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Available on EDGAR 10/07/2026 - 04:47 PM Accepted by SEC EDGAR 10/07/2026 - 04:46 PM Learn about SEC filing dates

SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

SCHEDULE 13G

UNDER THE SECURITIES EXCHANGE ACT OF 1934

(Amendment No. 6)

FUEL TECH, INC.

(Name of Issuer)

COMMON STOCK

(Title of Class of Securities)

359523107

(CUSIP Number)

03/31/2026

(Date of Event Which Requires Filing of this Statement)

Check the appropriate box to designate the rule pursuant to which this Schedule is filed:

Rule 13d-1(b)

Rule 13d-1(c)

Rule 13d-1(d)

schemaVersion:

SCHEDULE 13G

CUSIP Number(s): 359523107

1

Names of Reporting Persons

Grace & White, Inc.

2

Check the appropriate box if a member of a Group (see instructions)

(a)
(b)

3

Sec Use Only

4

Citizenship or Place of Organization

NEW YORK

Number of Shares Beneficially Owned by Each Reporting Person With:

5	Sole Voting Power 499,360.00
6	Shared Voting Power 0.00
7	Sole Dispositive Power 1,541,307.00
8	Shared Dispositive Power 0.00

9

Aggregate Amount Beneficially Owned by Each Reporting Person

1,541,307.00

10

Check box if the aggregate amount in row (9) excludes certain shares (See Instructions)

11

Percent of class represented by amount in row (9)

4.94 %

12

Type of Reporting Person (See Instructions)

IA

SCHEDULE 13G

Item 1.
(a)	Name of issuer: FUEL TECH, INC.
(b)	Address of issuer's principal executive offices: 27601 Bella Vista Parkway, Warrenville, IL 60555
Item 2.
(a)	Name of person filing: Grace & White, Inc
(b)	Address or principal business office or, if none, residence: Grace & White, Inc 515 Madison Ave. Suite 1700 NY, NY 10022
(c)	Citizenship: NY
(d)	Title of class of securities: COMMON STOCK
(e)	CUSIP No.: 359523107
Item 3.	If this statement is filed pursuant to §§ 240.13d-1(b) or 240.13d-2(b) or (c), check whether the person filing is a:
(a)	Broker or dealer registered under section 15 of the Act (15 U.S.C. 78o);
(b)	Bank as defined in section 3(a)(6) of the Act (15 U.S.C. 78c);
(c)	Insurance company as defined in section 3(a)(19) of the Act (15 U.S.C. 78c);
(d)	Investment company registered under section 8 of the Investment Company Act of 1940 (15 U.S.C. 80a-8);
(e)	An investment adviser in accordance with § 240.13d-1(b)(1)(ii)(E);
(f)	An employee benefit plan or endowment fund in accordance with § 240.13d-1(b)(1)(ii)(F);
(g)	A parent holding company or control person in accordance with § 240.13d-1(b)(1)(ii)(G);
(h)	A savings associations as defined in Section 3(b) of the Federal Deposit Insurance Act (12 U.S.C. 1813);
(i)	A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940 (15 U.S.C. 80a-3);
(j)	A non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J). If filing as a non-U.S. institution in accordance with § 240.13d-1(b)(1)(ii)(J), please specify the type of institution:
(k)	Group, in accordance with Rule 240.13d-1(b)(1)(ii)(K).
Item 4.	Ownership
(a)	Amount beneficially owned: 1,541,307
(b)	Percent of class: 4.94%
(c)	Number of shares as to which the person has:
	(i) Sole power to vote or to direct the vote: 499,360
	(ii) Shared power to vote or to direct the vote: 0
	(iii) Sole power to dispose or to direct the disposition of: 1,541,307
	(iv) Shared power to dispose or to direct the disposition of: 0
Item 5.	Ownership of 5 Percent or Less of a Class.
	Ownership of 5 percent or less of a class
Item 6.	Ownership of more than 5 Percent on Behalf of Another Person.
	Not Applicable
Item 7.	Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company or Control Person.
	Not Applicable
Item 8.	Identification and Classification of Members of the Group.
	Not Applicable
Item 9.	Notice of Dissolution of Group.
	Not Applicable

Item 10.

Certifications:

By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11.

SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

Grace & White, Inc.

Signature:	S/MARC RAVITZ
Name/Title:	Marc Ravitz , Executive Vice President
Date:	10/07/2026