The three-month ban is less than expected, and analysts said the ruling was unlikely to lead to a succession battle at Santander.
"I don't think this is going to kick off any change in the top management structure for the time being. Things looked a bit bleaker for Saenz actually a few months ago when the news first came out," Caja Madrid analyst Javier Bernat said.
Saenz will appeal to the Constitutional Court, a bank spokesman said, and ask the provincial court of Barcelona to suspend the sentence.
Under Spanish law, Saenz will be obliged to post a small daily fee while his case is being resolved.
Source: The Telegraph