Lindsey Argalas will push innovation throughout the Spanish bank and encouraging collaboration across businesses and markets.

Michael Cleary, Santander's head of consumer and business banking, and Robert Rubino, a former executive vice president at Citizens Financial Group, will share duties while overseeing their own business units.

Following are notable cases where banks were tripped up by the Fed's stress tests either by flunking the numbers (or quantitative) part of the test or raising red flags on a qualitative basis.

Banks and other firms collecting defaulted debt originated by another company are not subject to the kinds of restrictions placed on third-party debt collectors, the Supreme Court ruled Monday in a unanimous decision.

Banco Santander stepped in to take over stricken rival Banco Popular Espanol in a deal brokered by regulators that imposes billions of losses on investors.

Santander Consumer USA, one of the biggest subprime auto finance companies, verified income on just 8 percent of borrowers whose loans it recently bundled into bonds, according to Moody's Investors Service.

A $26 million settlement by Santander Consumer is shining a light on the hard-to-measure problem of auto dealer fraud, while also raising questions about the adequacy of lenders' efforts to combat bad behavior.

The demonstration was staged by a union-affiliated group that wants to organize bank workers.

The regulator said that Santander has not made sufficient progress in complying with a 2015 enforcement order.

Though backward-looking, the exam restricts the company from buying banks or opening branches outside the Northeast.