Laura A. Nash - Oct 1, 2025 Form 4 Insider Report for QUANTUM CORP /DE/ (QMCO)

Role
Chief Accounting Officer
Signature
/s/ Tara Ilges, Attorney-in-Fact for Laura A. Nash
Stock symbol
QMCO
Transactions as of
Oct 1, 2025
Transactions value $
-$7,805
Form type
4
Date filed
10/3/2025, 04:42 PM
Previous filing
Sep 17, 2025
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nash Laura A. Chief Accounting Officer C/O QUANTUM CORPORATION, 10770 E. BRIARWOOD AVE, CENTENNIAL /s/ Tara Ilges, Attorney-in-Fact for Laura A. Nash 2025-10-03 0001979364

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction QMCO Common Stock Award $0 +500 +4.4% $0.00 11.9K Oct 1, 2025 Direct
transaction QMCO Common Stock Sale -$1.17K -118 -0.99% $9.91 11.8K Oct 1, 2025 Direct F1, F2
transaction QMCO Common Stock Sale -$6.64K -611 -5.2% $10.86 11.1K Oct 2, 2025 Direct F3, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of performance-based stock units granted on July 1, 2023.
F2 Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on October 1, 2025, at a price ranging from $9.9026 to $9.9118. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.
F3 Represents the number of shares automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting of restricted stock units granted on October 1, 2024.
F4 Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on October 2, 2025, at a price ranging from $10.85 to $10.87. The reporting person undertakes to provide upon request by the Securities and Exchange Commission, the issuer, or a securityholder of the issuer detailed information regarding the number of shares sold and the prices at which the transactions were executed.