Former Nodus Bank CEO Pleads Guilty in $24.9 Million Fraud and Sanctions Evasion Scheme

Tomas Niembro Concha, the former chief executive officer of Nodus International Bank, has pleaded guilty to orchestrating a vast financial conspiracy that siphoned at least $24.9 million from the institution while simultaneously circumventing United States sanctions. Federal prosecutors in the Southern District of Florida revealed that Concha leveraged his leadership position to treat the regulated bank as a personal source of capital for illicit enrichment and prohibited foreign transactions. The criminal enterprise involved wire fraud and violations of the International Emergency Economic Powers Act, executed through sham investments and illicit real estate deals. The collapse of Nodus International Bank in Puerto Rico in 2023 is a direct consequence of these systemic internal abuses and the deliberate evasion of anti-money laundering controls. As part of his plea agreement with the Department of Justice, Concha is required to forfeit at least $16.9 million, representing the direct proceeds of his criminal activities.

The prosecution highlights the vulnerabilities created when internal governance fails to prevent executive-level misconduct and organized money laundering. Central to the case was Concha’s manipulation of banking infrastructure to move millions of dollars through opaque channels benefiting high-ranking insiders. By establishing a Miami-based lender as an intermediary, the conspirators injected $11 million of bank capital into a structure that ultimately returned those funds to themselves. This form of self-dealing is a red flag for financial investigators, demonstrating how conventional lending products can be exploited to facilitate the layering and integration stages of laundering. Lack of transparency regarding the true beneficial ownership of these loans allowed the illicit activity to persist for years without detection by the board of directors or external auditors.

Regulators emphasize that money laundering risk increases significantly when senior management bypasses established compliance protocols. In this case, the concealment of conflicts of interest enabled the fraud. Movement of $25.3 million through 47 promissory notes held by Nodus Finance, an entity privately owned by Concha and the board chairman, reflects a sophisticated effort to drain liquidity from the bank. From an anti-money laundering perspective, these transactions expose a critical failure in the internal control environment, as the individuals responsible for oversight were also perpetrating the crimes. Promissory notes are frequently used in complex financial fraud because they provide a veneer of legitimacy to unsecured, non-arm’s-length transfers of value.

Integrating fraudulent proceeds into the legitimate economy required further obfuscation, including the creation of shell companies and secondary financial entities. By leveraging their authority, the defendants ensured that the bank’s compliance department did not scrutinize the movement of funds toward their private interests. This systemic failure underscores the need for robust independent audits and empowering compliance officers to challenge executive decisions. When a CEO treats a bank as a personal automated teller machine, the integrity of the financial system is compromised, eroding public trust and threatening economic stability.

The case also demonstrates the intersection of domestic financial fraud and international sanctions evasion. Concha facilitated transactions for a Specially Designated National associated with the Venezuelan state-owned oil company Petróleos de Venezuela, S.A., showing how sanctioned individuals exploit compromised financial institutions to access global financial systems. A particularly notable scheme involved a real estate transaction in Southampton, New York, where a prohibited private agreement bypassed restrictions from the Office of Foreign Assets Control. The conspirators initially sought legitimate authorization to foreclose on the property, creating the appearance of compliance, but subsequently planned to sell it back to the sanctioned individual via a front company for $4 million. This maneuver exemplifies sanctions evasion tactics where legal processes mask illicit value transfers, with front companies concealing the true purchaser—a recurring theme in international money laundering cases involving high-value U.S. real estate.

Law enforcement increasingly emphasizes the role of financial facilitators who navigate regulatory environments on behalf of sanctioned entities. Concha’s willingness to engage in prohibited transactions reflects a broader culture of non-compliance extending beyond embezzlement. By assisting a designated individual in regaining control of a multimillion-dollar asset, he actively undermined the sanctions regime designed to pressure the Venezuelan government. The case underscores the link between financial crime and geopolitical risk, reinforcing its priority status for the Department of Justice and the Treasury Department.

The collapse of Nodus International Bank, overseen by the Office of the Commissioner of Financial Institutions of Puerto Rico in 2023, was directly caused by the sustained siphoning of capital by its leadership. When regulators approached the bank’s insolvency, the defendants attempted to deceive the board and comptroller by substituting a questionable loan portfolio for outstanding debt. This tactic, common in bank fraud, aims to delay discovery of missing funds while allowing continued extraction of value from remaining assets. Regulatory oversight proved crucial, as uncovering undisclosed relationships between executives and entities receiving millions in loans catalyzed the federal investigation. The liquidation process highlights the tangible harm of white-collar crime, impacting depositors, employees, and the broader financial community.

Policy implications of the case emphasize the need for stricter reporting requirements for international banks operating in U.S. territories. The ability of executives to conceal multimillion-dollar conflicts of interest for over five years suggests that disclosure mechanisms require enhancement. Coordination between the Internal Revenue Service Criminal Investigation Division and the Department of Justice illustrates the multi-agency effort required to unravel complex financial fraud, tracing funds across domestic and international accounts to quantify total losses.

Concha’s prosecution sends a stark warning to financial professionals who might believe their position or jurisdiction shields them from federal law. Charges of conspiracy to commit wire fraud and conspiracy to violate the International Emergency Economic Powers Act carry severe prison sentences. The mandated forfeiture of $16.9 million aims to strip him of ill-gotten gains and provide restitution to victims. This enforcement aligns with broader Homeland Security objectives to dismantle transnational criminal networks and their financial facilitators.

International standards, as promoted by the Financial Action Task Force, continue to evolve to prevent senior officials from abusing the financial system. This case exemplifies the “prohibited transaction” principle: engaging with a sanctioned party creates legal liability regardless of business justification. For anti-money laundering officers, the lesson is clear: the greatest risks often come from within the organization. Establishing a culture of transparency and accountability is the most effective safeguard against systemic fraud such as that witnessed at Nodus Bank.

As sentencing approaches in June, attention remains on the broader implications for Puerto Rico’s banking sector and beyond. The successful investigation of this multimillion-dollar scheme demonstrates the persistence of federal authorities in pursuing high-level financial criminals. By dismantling networks enabling sanctions evasion and fraudulent wealth extraction, law enforcement safeguards the stability of the global economy. The case stands as a landmark example of the convergence of corporate greed, regulatory failure, and the ongoing fight against international money laundering.

By fLEXI tEAM