UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON, D.C. 20549 FORM 20-F ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(b) OR (g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Date of event requiring this shell company report for the transition period from ____________ to ____________ Commission file number: 001-4227 ...

COMPLETION OF SOCIETE GENERALE’S EUR 1 BILLION SHARE BUY-BACK PROGRAMME FOR CANCELLATION PURPOSE Regulated Information Paris, 15 October 2025 (In accordance with article 5 of Regulation (EU) No 596/2014 on Market Abuse Regulation and article 3(3) of Delegated Regulation (EU) 2016/1052 supplementing Regulation (EU) No 596/2014 through regulatory technical standards concerning the conditions applicable to buy-back programmes and stabilisation measures) Societe Generale announces the completion of its share b ...

Core Points - The total number of shares composing the current share capital as of 30 September 2025 is 785,180,327, while the total number of voting rights is 871,965,338 [2][6]. Company Overview - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients in 62 countries, providing a wide range of advisory and financial solutions [3]. - The company has a strong commitment to sustainability and environmental transition, aiming to be a leading partner in these areas [4]. - Societe Generale is included in major socially responsible investment indices, highlighting its focus on ESG (Environmental, Social, and Governance) initiatives [4]. Business Segments - The Group operates three complementary business sets: French Retail, Private Banking and Insurance; Global Banking and Investor Solutions; and Mobility, International Retail Banking and Financial Services [7]. - The Global Banking and Investor Solutions segment is recognized for its leadership in equity derivatives, structured finance, and ESG [7].

Core Points - The total number of shares composing the current share capital as of 31 August 2025 is 785,180,327, while the total number of voting rights is 872,874,828 [2][6] Company Overview - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients in 62 countries [3] - The bank has been operational for 160 years, providing a wide range of advisory and financial solutions to corporate, institutional, and individual clients [3] - Societe Generale emphasizes sustainable value creation for all stakeholders through its long-lasting client relationships and innovative solutions [3] Business Segments - The Group operates three complementary business sets, integrating ESG offerings for all clients [4] - Societe Generale aims to be a leading partner in environmental transition and sustainability, being included in major socially responsible investment indices [4] - The bank's business segments include French Retail, Private Banking and Insurance, Global Banking and Investor Solutions, and Mobility, International Retail Banking and Financial Services [7]

Core Points - Societe Generale initiated a EUR 1 billion ordinary share buy-back program aimed at share cancellation, starting on August 4, 2025 [1] - As of August 29, 2025, the company completed 54.1% of the buy-back program, which corresponds to 1.2% of its total share capital [3] Buy-Back Program Details - The buy-back program is conducted in compliance with the conditions set by the General Meeting on May 22, 2024, and adheres to the Market Abuse Regulation [2] - The buy-backs are executed on trading platforms where Societe Generale shares are listed, including Euronext Paris [2] Purchase Summary - From August 25 to August 29, 2025, a total of 4,341,534 shares were repurchased at an average price of EUR 52.9723 [5] - Daily purchase details include: - August 25: 449,003 shares at an average price of EUR 57.1921 [4] - August 26: 465,064 shares at an average price of EUR 51.7650 [4] - August 27: 548,367 shares at an average price of EUR 51.8690 [5] - August 28: 574,221 shares at an average price of EUR 52.3376 [5] - August 29: 547,780 shares at an average price of EUR 52.3119 [5] Company Overview - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients in 62 countries [6] - The bank offers a wide range of advisory and financial solutions, emphasizing sustainable value creation for stakeholders [6][7]

Group 1 - Societe Generale Board of Directors has co-opted Ms. Laura Barlow as a Director effective 1 September 2025, following the resignation of Ms. Béatrice Cossa-Dumurguier [1] - The General Meeting on 27 May 2026 will convene to ratify Ms. Barlow's appointment [1] - Ms. Barlow has held significant positions in NatWest Group and Barclays, notably as Head of Restructuring and Sustainability [2] Group 2 - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients in 62 countries [4] - The bank has been operational for 160 years, providing a wide array of advisory and financial solutions [4] - The Group is committed to sustainability and is included in major socially responsible investment indices [5]

Core Points - The total number of shares composing the current share capital as of 31 July 2025 is 785,180,327 shares, with a total number of voting rights amounting to 874,556,412 [2][6] Company Overview - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients across 62 countries, providing a wide range of advisory and financial solutions for 160 years [3][4] - The company operates three complementary business segments, focusing on retail banking, global banking and investor solutions, and mobility and financial services [7] ESG Commitment - Societe Generale is committed to sustainability and environmental transition, embedding ESG offerings for all clients and being included in major socially responsible investment indices [4]

Core Points - Societe Generale initiated a EUR 1 billion ordinary share buy-back program aimed at share cancellation, starting on August 4, 2025 [1][2] - The program has received all necessary authorizations from supervisory authorities and complies with the conditions set forth by the General Meeting [2] - As of August 8, 2025, Societe Generale completed 9.6% of its buy-back program, which represents 0.2% of its total share capital of 785,180,327 shares [3] Buy-Back Transactions - The total number of shares repurchased from August 4 to August 8, 2025, was 1,718,926 shares at a daily weighted average price of EUR 55.8487 [5] - Daily transactions included: - August 4: 220,414 shares at EUR 54.8104 [4] - August 5: 209,844 shares at EUR 55.3552 [4] - August 6: 200,000 shares at EUR 55.4404 [5] - August 7: 200,000 shares at EUR 56.4492 [5] - August 8: 195,329 shares at EUR 57.2547 [5] Company Overview - Societe Generale is a leading European bank with approximately 119,000 employees serving over 26 million clients in 62 countries [6] - The bank has a strong commitment to sustainability and is included in major socially responsible investment indices [7]

Group 1 - The European Banking Authority published the results of the 2025 Europe-wide stress-testing exercise covering 64 banks in the European Union [1] - The complete results and methodology used for the stress test are available on the European Banking Authority website [1] Group 2 - Societe Generale is a top-tier European bank with approximately 119,000 employees serving over 26 million clients in 62 countries [2] - The bank has been supporting economic development for 160 years, providing a wide array of advisory and financial solutions [2] - Societe Generale aims to deliver sustainable value creation for all stakeholders through its long-lasting client relationships and innovative capabilities [2] Group 3 - Societe Generale operates three complementary business sets, embedding ESG offerings for all clients [3] - The bank is committed to being a leading partner in environmental transition and sustainability [3] - Societe Generale is included in major socially responsible investment indices, such as DJSI, FTSE4Good, and MSCI Low Carbon Leaders Index [3] Group 4 - The bank's services include French Retail, Private Banking, Insurance, Global Banking, and Investor Solutions, as well as Mobility and International Retail Banking [6] - Societe Generale has a leading position in equity derivatives, structured finance, and ESG solutions [6]

Group 1 - The second amendment to the 2025 Universal Registration Document was filed with the French Financial Markets Authority (AMF) on 1 August 2025 [1] - The document is available to the public free of charge and can be accessed on the Company's website and the AMF's website [2] - Societe Generale employs around 119,000 people and serves over 26 million clients in 62 countries, providing a wide array of financial solutions [3] Group 2 - Societe Generale is committed to sustainability and aims to be a leading partner in environmental transition, embedding ESG offerings across its business [4] - The Group is included in major socially responsible investment indices, highlighting its commitment to ESG principles [4] - The company operates three complementary business segments: French Retail, Global Banking and Investor Solutions, and Mobility, International Retail Banking and Financial Services [7]