Fuel Tech CEO granted 20,850 RSUs

Rhea-AI Filing Summary

FUEL TECH, INC. President and CEO Vincent J. Arnone received a grant of 20,850 Restricted Stock Units on March 24, 2026. Each unit represents a contingent right to receive one share of FTEK common stock.

The RSUs vest in three equal installments: one-third on each of the first, second, and third anniversaries of the grant date. Following this award, Arnone holds 20,850 RSUs directly, which will convert into common shares as they vest and are delivered under the company’s RSU Award Agreement.

Insider Trade Summary

Grant/Award: 20,850 shares

Grant/Award 1 txn

Insider ARNONE VINCENT J

Role President & CEO

Type	Security	Shares	Price	Value
Grant/Award	Restricted Stock Units	20,850	$0.00	$0.00

Holdings After Transaction: Restricted Stock Units — 20,850 contracts (Direct)

Footnotes (2)

1. F1. Each Restricted Stock Unit represents a contingent right to receive one stock of FTEK Common Stock.
2. F2. The Restricted Stock Units vest in three installments: (i) one-third of the total RSUs awarded shall vest on the one year anniversary after the transaction date shown above, (ii) one-third shall vest on the second anniversary of the transaction date shown above, and (iii) one-third shall vest on the third anniversary of the transaction date shown above. Subject to the restrictions on distribution set forth in the registrant's RSU Award Agreement, generally, shares will be delivered to the reporting person in respect of vested RSUs as soon as practicable after each vesting date, unless the reporting person has elected to defer distribution until a later date.

FAQ

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

What insider transaction did FUEL TECH (FTEK) report for Vincent J. Arnone?

FUEL TECH reported that President and CEO Vincent J. Arnone received 20,850 Restricted Stock Units as a compensation award. Each RSU is a contingent right to one share of common stock, vesting over three annual installments beginning one year after the March 24, 2026 grant date.

How many shares are covered by Vincent J. Arnone’s new RSU award at FUEL TECH (FTEK)?

The RSU award covers 20,850 units, each representing one share of FUEL TECH common stock. After this grant, Arnone holds 20,850 RSUs directly, which may convert into common shares as vesting conditions are met and shares are delivered under the award agreement.

What is the vesting schedule for Vincent J. Arnone’s 20,850 RSUs at FUEL TECH (FTEK)?

The 20,850 Restricted Stock Units vest in three equal installments. One-third vests on the first anniversary of the March 24, 2026 grant date, another third on the second anniversary, and the final third on the third anniversary, subject to the company’s RSU Award Agreement terms.

Does Vincent J. Arnone pay for the 20,850 RSUs granted by FUEL TECH (FTEK)?

The RSUs were granted at a stated price of $0.0000 per unit, indicating a compensation award rather than a purchase. Each unit grants a contingent right to receive one share of common stock upon vesting and distribution under the RSU Award Agreement.

How are Vincent J. Arnone’s vested RSUs at FUEL TECH (FTEK) delivered to him?

Shares underlying vested RSUs are generally delivered as soon as practicable after each vesting date. Delivery timing is subject to distribution restrictions in the RSU Award Agreement, and Arnone may elect to defer distribution to a later date according to the plan’s terms.

Is this FUEL TECH (FTEK) Form 4 transaction a buy or sell in the market?

This Form 4 reflects an acquisition of 20,850 Restricted Stock Units as a grant, not an open-market buy or sell. The transaction is coded as an award (Code A), providing contingent rights to future shares rather than immediate trading activity in the public market.

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

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Accepted by SEC EDGAR 03/27/2026 - 04:03 PM Learn about SEC filing dates

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

ARNONE VINCENT J

(Last) (First) (Middle)

27601 BELLA VISTA PARKWAY

(Street)

WARRENVILLE ILLINOIS 60555

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
FUEL TECH, INC. [ FTEK ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/24/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/24/2026		A		20,850		(2)	(2)	Common Stock	20,850	$0	20,850	D

Explanation of Responses:

1. Each Restricted Stock Unit represents a contingent right to receive one stock of FTEK Common Stock.

2. The Restricted Stock Units vest in three installments: (i) one-third of the total RSUs awarded shall vest on the one year anniversary after the transaction date shown above, (ii) one-third shall vest on the second anniversary of the transaction date shown above, and (iii) one-third shall vest on the third anniversary of the transaction date shown above. Subject to the restrictions on distribution set forth in the registrant's RSU Award Agreement, generally, shares will be delivered to the reporting person in respect of vested RSUs as soon as practicable after each vesting date, unless the reporting person has elected to defer distribution until a later date.

	/s/ Vincent J. Arnone	03/27/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)