NONCONTROLLING INTERESTS	9 Months Ended
Sep. 30, 2026
Noncontrolling Interest [Abstract]
NONCONTROLLING INTERESTS	NONCONTROLLING INTERESTS BRSH On March 10, 2025, a merger subsidiary of the Company’s wholly owned subsidiary BRSH, which is primarily comprised of the broker dealer operations within the Capital Markets segment, merged with a shell corporation and issued 0.6% of the equity in BRSH to certain investors in the shell corporation. Upon completion of the transaction, the investors in the shell corporation became minority stockholders of BRSH. The Company also issued restricted stock awards as more fully described in Note 22(c) - BRSH Stock Incentive Plan and assuming the full issuance of the restricted stock awards are vested, the Company owned 89.4% majority-interest in BRSH as of the date of the merger. As of September 30, 2026 and December 31, 2025, the Company owned 93.3% and 90.7%, respectively. The shell corporation that merged with BRSH on March 10, 2025 did not meet the definition of a business, since it did not have any assets, liabilities, or operations and was treated as the initial recognition of a variable interest entity, as more fully described in Note 3 - Variable Interest Entities. On October 22, 2026, in compliance with Section 267 of the Delaware General Corporation Law (the “DGCL”) and Section 18-209(i) of the Delaware Limited Liability Company Act, BRSH Merger Sub LLC, a Delaware limited liability company (“BRSH Merger Sub”), and an indirect, wholly owned subsidiary of BRC, merged with and into BRSH, with BRSH surviving (the “Short-Form Merger”). The Short-Form Merger became effective upon the filing of the Certificate of Ownership and Merger with the Secretary of State of the State of Delaware on October 22, 2026 (the “Effective Time”). Immediately prior to the Effective Time, Merger Sub owned greater than 90% of the outstanding shares of common stock, par value $0.0001 per share, of BRSH (the “BRSH Common Stock”), the sole class of capital stock of BRSH with shares outstanding. At the Effective Time, in connection with the Short-Form Merger, the outstanding shares of BRSH Common Stock not held by Merger Sub (other than shares subject to BRSH Restricted Stock Awards (as defined below) and shares held by holders who properly demand and perfect appraisal rights under Section 262 of the DGCL) were converted into the right to receive total cash in the amount of approximately $2,422 ($8.88 in cash per BRSH common share, without interest), and the holders of BRSH restricted stock awards (each, a “BRSH Restricted Stock Award”) that were outstanding immediately prior to the Effective Time were cancelled and substituted with a total amount of approximately 1,866,000 restricted stock awards of common stock, par value $0.0001 per share, of BRC (each, a “Substitute Restricted Stock Award”) under the B. Riley Financial Inc. 2021 Stock Incentive Plan (the “BRC Equity Plan”), representing a ratio of approximately two Substitute Restricted Stock Awards for each BRSH Restricted Stock Award. The Substitute Restricted Stock Awards have the same vesting terms and schedule (including with respect to any acceleration) as applied to the corresponding BRSH Restricted Stock Award immediately prior to the Effective Time and are otherwise subject to the terms and conditions of the BRC Equity Plan and the applicable award agreement. As of the Effective Time, the Company owned 100% of BRSH. BRC Trust BRC Trust was formed on January 6, 2025, and is a variable interest entity as more fully described in Note 3 - Variable Interest Entities. The noncontrolling interest of BRC Trust that is not owned by the Company includes 86.6% of the equity interests in the BRC Trust. Of the 86.6% equity interests not owned by the Company, 58.2% is owned by related parties as more fully described in Note 25 - Related Party Transactions.

On March 10, 2025, a merger subsidiary of the Company’s wholly owned subsidiary BRSH, which is primarily comprised of the broker dealer operations within the Capital Markets segment, merged with a shell corporation and issued 0.6% of the equity in BRSH to certain investors in the shell corporation. Upon completion of the transaction, the investors in the shell corporation became minority stockholders of BRSH. The Company also issued restricted stock awards as more fully described in Note 22(c) - BRSH Stock Incentive Plan and assuming the full issuance of the restricted stock awards are vested, the Company owned 89.4% majority-interest in BRSH as of the date of the merger. As of September 30, 2026 and December 31, 2025, the Company owned 93.3% and 90.7%, respectively.

The shell corporation that merged with BRSH on March 10, 2025 did not meet the definition of a business, since it did not have any assets, liabilities, or operations and was treated as the initial recognition of a variable interest entity, as more fully described in Note 3 - Variable Interest Entities.

On October 22, 2026, in compliance with Section 267 of the Delaware General Corporation Law (the “DGCL”) and Section 18-209(i) of the Delaware Limited Liability Company Act, BRSH Merger Sub LLC, a Delaware limited liability company (“BRSH Merger Sub”), and an indirect, wholly owned subsidiary of BRC, merged with and into BRSH, with BRSH surviving (the “Short-Form Merger”). The Short-Form Merger became effective upon the filing of the Certificate of Ownership and Merger with the Secretary of State of the State of Delaware on October 22, 2026 (the “Effective Time”). Immediately prior to the Effective Time, Merger Sub owned greater than 90% of the outstanding shares of common stock, par value $0.0001 per share, of BRSH (the “BRSH Common Stock”), the sole class of capital stock of BRSH with shares outstanding.

At the Effective Time, in connection with the Short-Form Merger, the outstanding shares of BRSH Common Stock not held by Merger Sub (other than shares subject to BRSH Restricted Stock Awards (as defined below) and shares held by holders who properly demand and perfect appraisal rights under Section 262 of the DGCL) were converted into the right to receive total cash in the amount of approximately $2,422 ($8.88 in cash per BRSH common share, without interest), and the holders of BRSH restricted stock awards (each, a “BRSH Restricted Stock Award”) that were outstanding immediately prior to the Effective Time were cancelled and substituted with a total amount of approximately 1,866,000 restricted stock awards of common stock, par value $0.0001 per share, of BRC (each, a “Substitute Restricted Stock Award”) under the B. Riley Financial Inc. 2021 Stock Incentive Plan (the “BRC Equity Plan”), representing a ratio of approximately two Substitute Restricted Stock Awards for each BRSH Restricted Stock Award. The Substitute Restricted Stock Awards have the same vesting terms and schedule (including with respect to any acceleration) as applied to the corresponding BRSH Restricted Stock Award immediately prior to the Effective Time and are otherwise subject to the terms and conditions of the BRC Equity Plan and the applicable award agreement. As of the Effective Time, the Company owned 100% of BRSH.

BRC Trust was formed on January 6, 2025, and is a variable interest entity as more fully described in Note 3 - Variable Interest Entities. The noncontrolling interest of BRC Trust that is not owned by the Company includes 86.6% of the equity interests in the BRC Trust. Of the 86.6% equity interests not owned by the Company, 58.2% is owned by related parties as more fully described in Note 25 - Related Party Transactions.