Disclaimer No Offer or Solicitation This communication and the information contained in it are provided for information purposes
only and are not intended to be and shall not constitute a solicitation of any vote or approval, or an offer to sell or solicitation of an offer to buy, or an invitation or recommendation to subscribe for, acquire or buy securities of Saipem,
Subsea 7 or the combined company following the proposed merger of Saipem and Subsea 7 (the "Proposed Business Combination Transaction") or any other financial products or securities, in any place or jurisdiction, nor shall there be any offer,
solicitation or sale of securities in any jurisdiction in which such offer, solicitation or sale would be unlawful prior to registration or qualification under the securities laws of any such jurisdiction. No offer of securities shall be made
in the United States absent registration under the U.S. Securities Act of 1933 (the “U.S. Securities Act”) or pursuant to an exemption from, or in a transaction not subject to, such registration requirements. Forward-looking Statements This
communication contains forward-looking information and statements about Saipem and Subsea7 and their combined business after completion of the Proposed Business Combination Transaction. Forward-looking statements are statements that are not
historical facts. These statements include financial projections and estimates and their underlying assumptions, statements regarding plans, objectives and expectations with respect to future operations, products and services, and statements
regarding future performance. Forward-looking statements are generally identified by the words “expects,” “anticipates,” “believes,” “intends,” “estimates” and similar expressions. Although the managements of Saipem and Subsea7 believe that
the respective expectations reflected in such forward-looking statements are reasonable, investors and holders of Saipem and Subsea7 shares are cautioned that forward-looking information and statements are subject to various risks and
uncertainties, many of which are difficult to predict and generally beyond the control of Saipem and Subsea7, respectively, that could cause actual results and developments to differ materially from those expressed in, or implied or projected
by, the forward-looking information and statements. Except as required by applicable law, neither Saipem nor Subsea7 undertake any obligation to update any forward-looking information or statements. Important Additional Information about the
Proposed Business Combination Transaction This communication is not a substitute for a registration statement or for any other document that Saipem or Subsea7 may file with the U.S. Securities and Exchange Commission (“SEC”) in connection
with the Proposed Business Combination Transaction. In connection with the Proposed Business Combination Transaction, Saipem and Subsea7 are filing relevant materials with the SEC, which, to the extent Saipem's shares will be required to be
registered under the U.S. Securities Act, may include a registration statement on Form F-4 that contains a prospectus. If an exemption from the registration requirements of the U.S. Securities Act is available, the shares issued in connection
with the Proposed Business Combination Transaction will be made available within the United States pursuant to such exemption and not pursuant to an effective registration statement on Form F-4. SAIPEM AND SUBSEA7 URGE INVESTORS AND
SHAREHOLDERS TO READ ANY SUCH REGISTRATION STATEMENT, PROSPECTUS AND ANY OTHER RELEVANT DOCUMENTS THAT MAY BE FILED WITH THE SEC, AS WELL AS ANY AMENDMENTS OR SUPPLEMENTS TO THESE DOCUMENTS, CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY
BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT SAIPEM AND SUBSEA7, THE PROPOSED BUSINESS COMBINATION TRANSACTION AND RELATED MATTERS. Investors and shareholders can obtain free copies of the prospectus and other
documents filed by Saipem and Subsea7 with the SEC (when they become available) through the website maintained by the SEC at www.sec.gov. Shareholders of Subsea7 are urged to read the prospectus, if and when available, and the other relevant
materials when they become available, as well as any supplements and amendments thereto, before making any voting or investment decision with respect to the Proposed Business Combination Transaction and will receive information at an
appropriate time on how to obtain these transaction-related documents for free from the parties involved or a duly appointed agent. Use of Non-IFRS Financial Measures This announcement includes certain non-IFRS financial measures with
respect to Saipem and Subsea7, including EBITDA and Net debt. These unaudited non-IFRS financial measures should be considered in addition to, and not as a substitute for, measures of Saipem’s and Subsea7’s financial performance prepared in
accordance with IFRS. In addition, these measures may be defined differently than similar terms used by other companies. Presentation of Financial Information This communication includes financial data regarding Saipem and Subsea7 and the
combination of Saipem and Subsea7. The presentation of information in any registration statement that Saipem may file with the SEC may be different than the financial data included herein as the financial data included in any registration
statement will be required to comply with the rules and regulations of the SEC. Further, any financial data contained herein representing the combination of Saipem and Subsea7 has not been prepared in accordance with the rules and regulations
of the SEC, including the pro forma requirements of Regulation S-X. Accordingly, pro forma financial data contained in any registration statement filed with respect to the Proposed Business Combination Transaction may differ from the pro
forma financial data contained herein, and such differences may be material. Any combined company financial data presented herein is presented for informational purposes only and is not intended to represent or be indicative of the actual
consolidated results of operations or financial position that would have been reported had the Proposed Business Combination Transaction been completed as of October 1st, 2024, and should not be taken as representative of the companies’
future consolidated results of operations or financial position had the Proposed Business Combination Transaction occurred as of such date. These estimates are based on financial information available at the time of the preparation of this
communication.