X0609 4 2026-06-04 0000709283 QUANTUM CORP /DE/ QMCO 0002055322 Dialectic Technology SPV LLC false 119 ROWAYTON AVENUE NORWALK CT 06853 false false true false false Common Stock 2026-06-04 4 C false 11020645 5.194 A 11020645 D Common Stock 2026-06-04 4 A false 3083975 5.194 A 14104620 D Warrant (right to buy) 5.194 2026-06-01 4 J false 105911 A 2026-06-01 2031-07-01 Common Stock 105911 105911 D Convertible Notes 5.194 2026-06-04 4 C false 57241228.00 D 2025-12-18 Common Stock 11020645 0 D On June 1, 2026 ("Issuance Date"), the Issuer issued to Dialectic Technology SPV LLC ("Dialectic") a warrant (the "Conversion Warrant") to purchase 105,911 (as may be adjusted pursuant to the Conversion Warrant) shares of common stock, par value $0.01 per share of the Issuer (the "Common Stock"), at an exercise price equal to $5.194 per share (as adjusted from time to time in accordance with the Conversion Warrant) on or after the Issuance Date and until the date that is five (5) years from the Issuance Date. On June 4, 2026 (the "Closing Date"), pursuant to a Conversion Agreement dated June 1, 2026 (the "Conversion Agreement"), by and among, among others, the Issuer and Dialectic, Dialectic converted $57,241,228.00 of the previously issued senior secured convertible notes (the "Convertible Notes"), consisting of the entire principal amount and all accrued and unpaid interest thereon, subject to certain conditions set forth in the Conversion Agreement (the "Conversion"). In connection with the Conversion, on the Closing Date, the Convertible Notes were cancelled, and the Issuer issued to Dialectic 11,020,645 shares of Common Stock. On the Closing Date, as consideration for the Conversion, the Issuer issued to Dialectic, (i) 3,083,975 additional shares of Common Stock (the "Consideration Shares"), which represents the quotient of (A) approximately $13.0 million, the present value of nominal PIK interest that would accrue on the Convertible Notes from the Closing Date to the maturity date thereof, discounted at a rate of 11%, plus (B) approximately $3.0 million, the Term Loan Deferred Cash Interest Amount (as defined in the Credit Agreement) owed to Dialectic, divided by $5.194. /s/ Dialectic Technology SPV LLC, by John Fichthorn, Authorized Signatory 2026-06-08