Banco Santander, S.A. filed a Form 6-K on October 8, 2026, disclosing the repurchase of 21,600,000 of its own ordinary shares across four trading venues between October 1 and October 7, 2026, under its ongoing buyback programme.

Key Highlights

  • Total shares repurchased: 21,600,000 ordinary shares purchased between October 1 and October 7, 2026 (both inclusive).
  • Cumulative spend: Cash amount of shares purchased through October 7, 2026 totals 1,175,196,981 euros, according to the filing.
  • Programme completion: The cumulative amount represents approximately 64.4% of the maximum investment amount of the Buyback Programme, the filing states.
  • Shares repurchased since 2021: With these purchases, the bank has repurchased approximately 18.5% of its outstanding shares as of 2021, per the filing.
  • Trading venues: Purchases were executed across XMAD, CEUX, TQEX, and AQEU.
  • Weighted average prices: Daily weighted average prices ranged from approximately 11.7531 euros to 12.4744 euros per share across venues and dates covered.

Banco Santander's October 1-7 Share Repurchase Activity Under Its Buyback Programme

Banco Santander, S.A. (NYSE:SAN) submitted a Form 6-K to the U.S. Securities and Exchange Commission on October 8, 2026, communicating details of share repurchase transactions conducted between October 1 and October 7, 2026. The filing references the bank's earlier "notice of inside information of 10 August 2026 (official registry number 3336)," described as the "Buyback Commencement Communication," under which the Board of Directors approved the Buyback Programme. The disclosure was made in compliance with Securities Market legislation and, according to the filing, pursuant to Article 5 of Regulation (EU) No. 596/2014 on Market Abuse and related Commission Delegated Regulation (EU) 2016/1052.

Over the five trading days covered, the bank purchased a total of 21,600,000 ordinary shares (ISIN ES0113900J37) across four venues: XMAD, CEUX, TQEX, and AQEU. The largest single-day volume on any one venue occurred on October 1, 2026, when 4,350,000 shares were purchased on XMAD at a weighted average price of 12.0668 euros. The lowest weighted average price recorded during the period was 11.7531 euros on XMAD on October 2, 2026, while the highest was 12.4744 euros on TQEX on October 6, 2026.

As of October 7, 2026, the filing reports cumulative cash spending under the Buyback Programme of 1,175,196,981 euros, equal to approximately 64.4% of the programme's maximum investment amount. The filing further states that, taken together, the repurchases amount to approximately 18.5% of the bank's outstanding shares as of 2021. Detailed transaction-level data for the period is referenced via an annex linked in the filing. The report was signed by Pedro de Mingo Kaminouchi, Head of Corporate Compliance, on October 8, 2026.

What Was Disclosed

Banco Santander disclosed share-by-share repurchase data for October 1-7, 2026, covering 21,600,000 shares across four venues, with cumulative programme spending reaching 1,175,196,981 euros, or approximately 64.4% of the authorized maximum.