X0609 4 2026-10-01 0 0000709283 QUANTUM CORP /DE/ QMCO 0002027146 Tracy John R. false C/O QUANTUM CORPORATION 10770 E. BRIARWOOD AVE CENTENNIAL CO 80112 1 0 0 0 0 Common Stock 2026-10-01 4 A 0 12000 0 A 39000 D Grant of restricted stock units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs vest in full on the earlier of October 1, 2027 or the date of the Companys next annual meeting of stockholders, in each case subject to the Reporting Persons continued service on the Companys Board of Directors. /s/ Tara Ilges, attorney-in-fact for John R. Tracy 2026-10-05