The investment fraud lawyers at Gana Weinstein LLP represent investors nationwide in FINRA arbitration claims against brokerage firms such as Prime Number Capital, LLC. Retirement account losses, structured product losses, private placement losses, and losses in non-traded REITs and other alternative investments are frequently the result of unsuitable recommendations rather than ordinary market risk. Our attorneys can analyze your investments, determine whether your broker or financial advisor acted improperly, and pursue recovery of your losses.
Prime Number Capital is an investment banking broker-dealer that underwrites initial public offerings and follow-on offerings on firm commitment and best efforts bases, provides capital markets advisory services and executes client trades. Organized in Delaware in 2017, the firm is based in Great Neck, New York, and clears its transactions on a fully disclosed basis through a clearing firm.
Prime Number Capital, LLC – By the Numbers:
- CRD #: 297029
- Regulatory Events: 1
- Broker Employees: 6
Prime Number Capital, LLC – In the News:
FINRA v. Prime Number Capital, LLC (Case #2023076995501) – From January 2021 to the present, Prime Number failed to establish and implement an anti-money laundering (AML) program reasonably designed to detect and cause the reporting of suspicious transactions and failed to conduct reasonable testing of its AML program, in violation of FINRA Rules 3310(a), 3310(f)(ii), 3310(c), and 2010. From July 2020 to December 2024, Prime Number failed to supervise or preserve its registered representatives’ business-related communications sent or received using unapproved communications platforms, in violation of Section 17(a) of the Securities Exchange Act of 1934, Exchange Act Rule 17a-4, and FINRA Rules 3110, 4511, and 2010. From September 2020 to October 2025, in connection with its underwriting of IPOs, the firm failed to timely file required documentation with FINRA, in violation of FINRA Rules 5110 and 2010. For these violations, Prime Number is censured, fined $335,000, and has agreed to retain an independent consultant.
A brokerage firm’s regulatory history is often important evidence in a FINRA arbitration claim. If you lost money at Prime Number Capital, LLC, the securities arbitration attorneys at Gana Weinstein LLP can review the firm’s record alongside your accounts, free of charge.
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