Third Quarter 2023 Earnings

Additional Information about the Acquisition of ITC and Where to Find It
Fortis will file with the United States Securities and Exchange Commission (the "SEC") a registration statement on Form F-4, including a proxy statement of ITC Holdings Corp. ("ITC") and a prospectus of Fortis, and other documents in connection with the proposed acquisition by Fortis of ITC (the "Acquisition"). The proxy statement/prospectus will be sent to the shareholders of ITC. SHAREHOLDERS OF ITC ARE URGED TO READ THE PROXY STATEMENT/PROSPECTUS, AND ANY OTHER FILINGS THAT MAY BE MADE WITH THE SEC IN CONNECTION WITH THE ACQUISITION WHEN THEY BECOME AVAILABLE, AS THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE ACQUISITION. The registration statement and proxy statement/prospectus and other documents which will be filed by Fortis with the SEC, when filed, will be available free of charge at the SEC's website at www.sec.gov, on Fortis' website at www.fortisinc.com or by contacting Fortis' Investor Relations department. Such documents are not currently available. You may also read and copy any reports, statements and other information filed by Fortis and ITC with the SEC at the SEC public reference room at 100 F Street N.E., Room 1580, Washington, D.C. 20549. Please call the SEC at (800) 732-0330 or visit the SEC's website for further information on its public reference room. The communications on this page and in the documents made available to the public on this page shall not constitute an offer to sell or the solicitation of an offer to buy any securities, nor shall there be any sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to appropriate registration or qualification under the securities laws of such jurisdiction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended.

Participants in the Solicitation of Proxies
The communications on this page and in the documents made available to the public on this page are not a solicitation of proxies in connection with the Acquisition. However, ITC, Fortis and certain of their respective directors and executive officers, under SEC rules, may be deemed to be participants in the solicitation of proxies in connection with the Acquisition. Information about ITC's directors, executive officers and other members of management and employees may be found in its 2014 Annual Report on Form 10-K filed with the SEC on February 26, 2015, and definitive proxy statement relating to its 2015 Annual Meeting of Shareholders filed with the SEC on April 9, 2015. These documents can be obtained free of charge from the SEC, as indicated above, or upon written request to ITC, Investor Relations, 27175 Energy Way, Novi, MI 48377 or by calling 248.946.3000. Information about Fortis' directors and executive officers may be found in its Management Information Circular dated March 20, 2015 available on this website. Additional information regarding the interests of such potential participants in the solicitation of proxies in connection with the Acquisition will be included in the proxy statement/prospectus and other relevant materials filed with the SEC when they become available.