Exhibit 99.1 B. Riley Financial Files 2023 Annual Report on Form 10-K ● Audit Committee Independent Legal Counsel, Winston & Strawn LLP, Completes Investigation of Relationship Between the Company and Brian Kahn ● Independent Investigation Reaches Same Conclusion of Prior Internal Review Conducted by Sullivan & Cromwell LLP LOS ANGELES, April 24, 2024 – B. Riley Financial, Inc. (NASDAQ: RILY) (“B. Riley” or the “Company”), a diversified financial services platform, today announced the filing of its Annual R ...