Michael Robert Marchner, Jr. v. Bryant R. Riley

IN THE COURT OF CHANCERY OF THE STATE OF DELAWARE MICHAEL ROBERT MARCHNER, ) JR., derivatively on behalf of B. ) RILEY FINANCIAL, INC., a ) Delaware Corporation, ) ) Plaintiff, ) ) v. ) C.A. No. 2025-0164-LWW ) BRYANT R. RILEY, ROBERT L. ) ANTIN, TAMARA “TAMMY” ) BRANDT, ROBERT D. ) D’AGOSTINO, THOMAS J. ) KELLEHER, RENEÉ E. LABRAN, ) RANDALL E. PAULSON, MICHAEL ) J. SHELDON, and MIRIAM “MIMI” ) K. WALTERS, ) ) Defendants, ) ) and ) ) B. RILEY FINANCIAL, INC., ) Nominal Defendant. ) MEMORANDUM OPINION Date Submitted: December 22, 2025 Date Decided: March 30, 2025 Carmella P. Keener, COOCH AND…