Exhibit 5.1
February 26, 2021
The Board of Directors
Fuel Tech, Inc.
27601 Bella Vista Parkway
Warrenville, Illinois 60555
Ladies and Gentlemen:
I have acted as counsel to Fuel Tech, Inc., a Delaware corporation (the “Company”), in connection with the preparation and filing with the Securities and Exchange Commission (the “Commission”) pursuant to the Securities Act of 1933, as amended (the “Securities Act”), and the rules and regulations promulgated thereunder, of a registration statement on Form S-3 (the “Registration Statement”), relating to the resale by the selling securityholders named therein of up to 7,850,000 shares of the Company’s common stock, par value $0.001 per share (the “Common Stock”), consisting of (i) 5,000,000 shares of Common Stock (the “Shares”), (ii) up to 2,500,000 shares of Common Stock (the “ Purchaser Warrant Shares”) issuable upon the exercise of warrants (the “Purchaser Warrants”), and (iii) up to 350,000 shares of Common Stock (the “Placement Agent Warrant Shares” issuable upon the exercise of warrants (the “Placement Agent Warrants” and, together with the Purchaser Warrants, the “Warrants”) issued to certain selling securityholders as the designees of H.C. Wainwright & Co., LLC (“Wainwright”) on February 17, 2021, as part of Wainwright’s compensation for serving as the exclusive placement agent in connection with the private placement closed on February 17, 2021.
In my capacity as counsel to the Company, I have examined the Registration Statement and such other documents, records and instruments as we have deemed necessary for the purposes of this opinion. As to matters of fact material to the opinions expressed herein, I have relied on (a) information in public authority documents (and all opinions based on public authority documents are as of the date of such public authority documents and not as of the date of this opinion letter), and (b) factual information provided in certificates of officers of the Company. I have not independently verified the facts so relied on.
In such examination, I have assumed the following without investigation: (a) the authenticity of original documents and the genuineness of all signatures; (b) the conformity to the originals of all documents submitted to us as copies; and (c) the truth, accuracy and completeness of the factual information, representations and warranties contained in the records, documents, instruments and certificates I have reviewed.
Fuel Tech, Inc. • 27601 Bella Vista Pkwy, Warrenville, IL 60555
Phone 630.845.4500 • Fax 630.845.4501
www.ftek.com