Company: RILYN
Filing Date: 2025-10-22
Form Type: DEFA14A
Source: 0001213900-25-101231
Chunk: 0

Company: B. Riley Financial, Inc.
Filing Date: 2025-10-22
Form: DEFA14A
Chunk 0
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UNITED STATES
SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 _________________ SCHEDULE 14A _________________ Proxy Statement Pursuant To Section 14(A) of
the Securities Exchange Act of 1934

| Filed by the Registrant                    |     | ☒ |
| Filed by a Party other than the Registrant |     | ☐ |

Check the appropriate box:

| ☐ |     | Preliminary Proxy Statement                                                     |
| ☐ |     | Confidential, For Use of the Commission Only (as permitted by Rule 14a-6(e)(2)) |
| ☐ |     | Definitive Proxy Statement                                                      |
| ☒ |     | Definitive Additional Materials                                                 |
| ☐ |     | Soliciting Material Pursuant to §240.14a-12                                     |

B. RILEY FINANCIAL, INC. (Name of Registrant As Specified In Its Charter) _______________________________________________________________
(Name of Person(s) Filing Proxy Statement, if other than the Registrant) Payment of Filing Fee (Check the appropriate box):

| ☒ |     | No fee required                                                                                     |
| ☐ |     | Fee paid previously with preliminary materials.                                                     |
| ☐ |     | Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11 |

Important Notice Regarding the Internet Availability of Proxy Materials for the Annual Meeting of Stockholders to be held virtually on December 1, 2025 at 8:00 A.M. PACIFIC TIME This communication is not a form of voting and presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. The Proxy Statement and Annual Report are available at https://web.viewproxy.com/brileyfin/2025 If you want to receive a paper or email copy of these documents, you must request one by following the instructions below on or before November 21, 2025 to facilitate timely delivery. There is no charge to you for requesting a copy. Important information regarding the Internet availability of the Company’s proxy materials, instructions for accessing your proxy materials and voting online, and instructions for requesting paper or e-mail copies of your proxy materials are outlined in this Notice. CONTROL NUMBER You must use the 11-digit Virtual Control Number located in the box to attend