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STATES\n\nSECURITIES AND EXCHANGE COMMISSION\n\nWASHINGTON, D.C. 20549\n\n \n\n \n\nForm 20-F\n\n(Mark One)\n\n☐\n\nREGISTRATION STATEMENT PURSUANT TO SECTION 12(b) or (g) OF THE SECURITIES EXCHANGE ACT OF 1934\n\nOR\n\n☑\n\nANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\nFor the fiscal year ended December 31, 2025\n\nOR\n\n☐\n\nTRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\nFor the transition period from                         to                      \n\nOR\n\n☐\n\nSHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934\n\nDate of event requiring this shell company report\n\nCommission file number: 1-14090\n\n \n\n \n\n \n\n \n\nEni SpA\n\n(Exact name of Registrant as specified in its charter)\n\nRepublic of Italy\n\n(Jurisdiction of incorporation or organization)\n\n1, piazzale Enrico Mattei - 00144 Roma - Italy\n\n(Address of principal executive offices)\n\nFrancesco Esposito\n\nEni SpA\n\n1, piazza Ezio Vanoni\n\n20097 San Donato Milanese (Milano) - Italy\n\nTel +39 02 52061632 - Fax +39 06 59822575\n\n(Name, Telephone, Email and/or Facsimile number and Address of Company Contact Person)\n\n \n\n \n\nSecurities registered or to be registered pursuant to Section 12(b) of the Act.\n\n \n\n \n\n \n\n \n\n \n\nTitle of each class\n\n    \n\nTrading Symbol(s)\n\n    \n\nName of each exchange on which registered\n\nShares\n\n \n\nE\n\n \n\nNew York Stock Exchange*\n\nAmerican Depositary Shares\n\n \n\n \n\n \n\nNew York Stock Exchange\n\n(Which represent the right to receive two Shares)\n\n \n\n \n\n \n\n* Not for trading, but only in connection with the registration of American Depositary Shares, pursuant to the requirements of the Securities and Exchange Commission.\n\n \n\nSecurities registered or to be registered pursuant to Section 12(g) of the Act:\n\nNone\n\nSecurities for which there is a reporting obligation pursuant to Section 15(d) of the Act:\n\nNone\n\nIndicate the number of outstanding shares of each of the issuer’s classes of capital or common stock as of the close of the period covered by the annual report.\n\n \n\n \n\nOrdinary shares\n\n3,146,765,114\n\n \n\n \n\n[Table of Contents](#TOC)\n\nIndicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act.\n\nYes      ☑                   No      ☐\n\n \n\nIf this report is an annual or transition report, indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.\n\nYes  ☐ No  ☑\n\nNote - Checking the box above will not relieve any registrant required to file reports pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 from their obligations under those Sections.\n\nIndicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days.\n\nYes  ☑ No  ☐\n\nIndicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files).\n\nYes  ☑ No  ☐\n\nIndicate by check mark whether  the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or an emerging growth company. See the definitions of “large accelerated filer”, “accelerated filer”, and “emerging growth company” in Rule 12b-2 of the Exchange Act.\n\nLarge accelerated filer  ☑ Accelerated filer  ☐ Non-accelerated filer  ☐    Emerging growth company  ☐\n\nIf an emerging growth company that  prepares its financial statements in accordance with U.S. GAAP, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards† provided pursuant to Section 13(a) of the Exchange Act. ☐\n\n† The term “new or revised financial accounting standard” refers to any update issued by the Financial Accounting Standards Board to its Accounting Standards Codification after April 5, 2012.\n\nIndicate by check mark whether the registrant has fi led a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. ☑\n\nIf securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements. ☐\n\nIndicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive- based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b). ☐\n\nIndicate by check mark which basis of accounting the registrant has used to prepare the financial statements included in this filing:\n\nU.S. GAAP ☐ International Financial Reporting Standards as issued by the International Accounting Standards Board ☑ Other ☐\n\nIf “Other” has been checked in response to the previous question, indicate by check mark which financial statement item the registrant has elected to follow."}