Nodus Bank CEO Accused of Using Bank as 'Personal ATM' in $24M Fraud Scheme That Led to Collapse

A former bank chief executive has admitted to orchestrating a sweeping fraud that siphoned millions from his own institution, in a case prosecutors say exposed a shocking abuse of power at the highest level of banking.

According to the US Department of Justice announcement, Tomás Niembro Concha, 64, pleaded guilty to participating in a conspiracy that diverted at least $24.9 million (£18.56 million) from Nodus Bank, a Puerto Rico-based financial institution he once led.

A Fraud Hidden in Plain Sight

Federal prosecutors outlined a complex scheme that ran for years, during which Niembro and his associates disguised self-serving transactions as legitimate banking activity.

Authorities said the conspirators concealed from other Nodus Bank board members and executives the true nature of several deals, deliberately hiding their personal financial interests.

At the heart of the operation were investments and loans that appeared routine on paper but were structured to benefit insiders. Prosecutors stated that the group used sham investments and other fraudulent means to extract funds from the bank.

One such transaction involved directing approximately $11 million (£8.2 million) into a Miami-based lender, only for those funds to be redirected back to the conspirators.

Millions Funnelled Through Deceptive Deals

The scale of the fraud widened as the scheme evolved.

Between 2018 and 2021, the bank purchased at least 47 promissory notes worth approximately $25.3 million (£18.86 million) from a company secretly controlled by Niembro and his associates. Prosecutors said these transactions were designed to 'enrich themselves' while misleading the bank about the true nature of the deals.

In effect, the CEO used the institution not as a fiduciary steward but as a mechanism for personal gain, which officials have described as operating like a 'personal ATM'.

Sanctions Evasion Tied to Venezuela

Beyond the fraud itself, the case carries serious international implications.

Niembro also admitted to involvement in a conspiracy to evade US sanctions linked to Venezuela. Prosecutors said the scheme involved financial transactions that were structured to bypass restrictions imposed by US authorities.

The Department of Justice noted that the conduct included efforts to 'evade US sanctions against Venezuela', adding a geopolitical dimension to an already complex financial crime.

Collapse of Nodus Bank

The consequences of the scheme extended beyond illicit profit.

Authorities said the fraudulent activity 'ultimately [led] to the bank's failure in 2023,' underscoring the broader damage caused by the misconduct.

By diverting millions in assets and masking risky financial behaviour, the conspirators undermined the bank's stability and regulatory standing.

Guilty Plea and Forfeiture

Niembro has now formally pleaded guilty to conspiracy charges and agreed to significant financial penalties.

As part of the plea, he has committed to forfeiting millions in illicit proceeds, with authorities moving to recover funds tied to the scheme. The Justice Department stated that the case reflects a deliberate effort to hold financial executives accountable for abuses of power.

According to US Attorney Jason A. Reding Quiñones for the Southern District of Florida, 'this defendant used his position as CEO to siphon more than $24 million (£18.56 million), hide conflicts of interest, and help drive the bank's collapse.'

He added: 'The scheme also involved efforts to evade US sanctions tied to Venezuela's state-owned oil company, PDVSA. As a career prosecutor and former state trial judge, I've learned that following the money reveals the truth. Here, it exposed both fraud and sanctions violations.'

'We will hold accountable anyone who abuses our financial system for personal gain.'

A Stark Warning for the Industry

For the banking sector, the downfall of Nodus Bank offers a clear warning.

What began as concealed transactions evolved into a multi-million-dollar scandal that not only enriched its perpetrators but also led to the collapse of the institution itself.

As prosecutors continue to pursue accountability, the message is unmistakable: those who exploit positions of trust for personal gain will face serious legal consequences.

In the words of federal authorities, this was not merely financial misconduct; it was a sustained effort to deceive, enrich, and evade the law at the highest level of corporate leadership.