6-K

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

________________________

Form 6-K

Report ofForeign Issuer

Pursuant to Rule 13a-16 or 15d-16 of

the Securities Exchange Act of 1934

For the month of September 2024

Eni S.p.A.

(Exact name of Registrant as specified in its charter)

Piazzale Enrico Mattei 1 - 00144 Rome, Italy

(Address of principal executive offices)

_________________________

(Indicate by check mark whether the registrant files or will file annual reports under cover of Form 20-F or Form 40-F.)

Form 20-F X Form 40-F

_________________________

(Indicate by check mark whether the registrant by furnishing the information contained in this Form is also thereby furnishing the information to the Commission pursuant to Rule 12g3-2b under the Securities Exchange Act of 1934.)

Yes _ No X

(If "Yes" is marked, indicate below the file number assigned to the registrant in connection with Rule 12g3-2(b): )

Table ofcontents

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorised.

Date: September 25, 2024

Eni: report on the purchase of treasury shareson 16 September 2024

San Donato Milanese (Milan), 25 September2024 – On 16 September 2024, Eni acquired on the Euronext Milan no. 540,000 shares (equal to 0.02% of the share capital), at a weighted average price per share equal to 14.0651 euro, for a total consideration of 7,595,157.78 euro within the second tranche of the treasury shares program approved by the Shareholders' Meeting on 15 May 2024, previously subject to disclosure pursuant to art. 144-bis of Consob Regulation 11971/1999, for the purpose of paying to the Shareholders an additional remuneration compared to the distribution of dividends.

From the start, on 13 June 2024, of the second tranche of the buyback program, Eni acquired no. 43,617,347 shares (equal to 1.33% of the share capital) for a total consideration of 623,886,979.33 euro.

Considering the treasury shares already held and the purchases made from the beginning of the treasury shares buyback program on 27 May 2024, Eni holds n. 140,238,419 shares equal to 4.27% of the share capital.

Details of the daily transactions made on 16 September 2024 are reported below.

Company Contacts:

Press Office: Tel. +39.0252031875 – +39.0659822030**

Freephone for shareholders (from Italy): 800940924

Freephone for shareholders (from abroad): + 80011223456

Switchboard: +39-0659821

ufficio.stampa@eni.com

segreteriasocietaria.azionisti@eni.com

investor.relations@eni.com

Web site: www.eni.com