Buyback programme: transactions 17-23sept
Banco Santander completed a share buyback program from 17-23 September 2026, repurchasing 10.9 million shares for €696.8 million. This represents 38.2% of the program's maximum investment and 18.3% of outstanding shares as of 2021. The bank disclosed transactions across various trading venues, with weighted average prices ranging from €12.59 to €12.97.
How this was made

The 30-second read
Why it matters
The disclosed transactions represent a material portion of the programme, likely providing short‑term price support and signaling confidence from management.
Market read
The buyback tranche is a concrete corporate action that can affect SAN's share price and may influence peer banks' capital return strategies.
What to watch
Potential regulatory scrutiny on large repurchases and the impact of currency fluctuations on the euro‑denominated buyback.
Background
Banco Santander announced a multi‑year share repurchase programme earlier in the year; this filing details the first tranche execution.
Ticker impact
Banco Santander disclosed a buyback tranche of €696.8M covering 10.9M shares, 38.2% of the programme and 18.3% of outstanding shares.
Potential modest upside of 1‑2% as the market digests the sizable repurchase.
Large European bank, significant cash amount, and a high percentage of the programme indicate material impact.
Market effects
May signal confidence in balance sheet, could influence other European banks' buyback considerations.
Adds slight positive pressure to the Euro Stoxx banking index.
Limited to European banking sector; minimal global ripple.
Counterpoint
Buybacks may mask underlying earnings weakness; price could stall if fundamentals disappoint.
Key entities
- companyBanco Santander, S.A.
Spanish multinational bank listed in the U.S. as SAN.

