According to FINRA, Eduardo Leon Jr. was fined $5,000 and suspended from association with any FINRA member firm in all capacities for two months, effective February 2 through April 1, 2026, for borrowing a total of $750,000 from one of his securities customers without notifying or obtaining approval from his member firm—and without documenting the loans or repaying any portion of either amount.FINRA found that Leon borrowed $250,000 from a securities customer in August 2017, following damage to his home caused by Hurricane Harvey. The customer was a wealthy individual who had been Leon's personal friend for approximately 25 years. In September 2022, Leon borrowed an additional $500,000 from the same customer. Neither loan was reduced to writing, and as of the time of the FINRA action, Leon had not repaid any portion of either loan—for a total outstanding balance of $750,000.Leon's firm discovered the loans in April 2025 and disciplined him internally by suspending him for one month and requiring him to forfeit two months' commissions. FINRA's action added a separate regulatory fine and suspension on top of the firm's internal discipline.FINRA Rule 3240 generally prohibits registered representatives from borrowing money from customers unless very specific conditions are met—such as the customer being an immediate family member or a financial institution in the business of lending. Even in permitted circumstances, firms typically require prior written notice and approval. Leon neither sought approval from nor notified his firm about either loan. The lack of documentation further compounded the violation by making the arrangements impossible to verify or monitor.For investors, this case illustrates a serious and recurring problem in the securities industry: brokers who blend personal financial relationships with customer relationships. A broker who borrows money from a client—especially undocumented amounts—creates a direct conflict of interest that can affect investment recommendations and damage customer trust. Investors should never lend money to their broker, and should report any such request immediately to the firm's compliance department and to FINRA.