Prime Number Capital, LLC has agreed to pay a fine of $335,000 as a part of a settlement with the Financial Industry Regulatory Authority (FINRA).

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.

Prime Number has agreed to a censure on top of the $335,000 fine. The firm will also have to retain an independent consultant.

Prime Number Capital became a FINRA member in December 2018. The firm, headquartered in New York, NY, has eight registered representatives and two branch offices. Prime Number offers investment banking services, including serving as underwriter for initial public offerings (IPOs), often involving foreign issuers with small market capitalizations.