QUANTUM CORP /DE/ (QMCO) · Insider Trading (Form 4) SEC Filing

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-01-01 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: QUANTUM CORP /DE/ (QMCO) CIK: 0000709283 --- Reporting Owner --- Name: Craythorne Anthony CIK: 0002075430 Role: Officer (Chief Revenue Officer) --- Non-Derivative Transactions --- [Transaction #1] Security: Common Stock Date: 2026-01-01 | Code: A (Grant or award) Shares: +15,000 | Price: $0.00 Shares Owned After: 15,000 | Ownership: D (Direct) Footnotes: [F1] 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 over three years in equal annual installments on each anniversary of the vesting commencement date, subject to the Reporting Person's continued service through each vesting date. --- Footnotes (Complete Index) --- F1: 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 over three years in equal annual installments on each anniversary of the vesting commencement date, subject to the Reporting Person's continued service through each vesting date. --- Signature --- /s/ Tara Ilges, attorney-in-fact (2026-01-05)