(QMCO)

Reporting relationship: Chief Accounting Officer
Issuer ticker: QMCO
Reported as of: 02 Jul 2026
Net transaction value: -$2,733
SEC form: 4
Accepted by SEC: 07 Jul 2026, 16:09:39 UTC
Prior SEC filing: 03 Apr 2026
Source filing: View source filing
Reporting owner signature: /s/ Tara Ilges, Attorney-in-Fact for Laura A. Nash

Key filing fact

Laura A. Nash filed Form 4 for QUANTUM CORP /DE/ (QMCO) on 07 Jul 2026.

Key facts

This page summarizes Laura A. Nash's Form 4 filing for QUANTUM CORP /DE/ (QMCO).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 07 Jul 2026, 16:09.

Change

Previous filing in this sequence was filed on 03 Apr 2026.
Current net transaction value: -$2,733.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001979364 Primary reporting owner

Nash Laura A.

Relationship: Chief Accounting Officer
Address: C/O QUANTUM CORPORATION, 10770 E. BRIARWOOD AVE, CENTENNIAL
Signature: /s/ Tara Ilges, Attorney-in-Fact for Laura A. Nash
Signature date: 07 Jul 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

QMCO transaction

Common Stock

Sale

Transaction value: $2,733
Shares: -260
Change %: -2.4%
Price: $10.51
Shares after: 10,770
Date: 02 Jul 2026
Ownership: Direct
Footnotes: F1, F2

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 2 footnotes

Footnote F1

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 July 1, 2023. This Form 4 is a required filing under the Securities Exchange Act of 1934, and the securities in this Form 4 are subject to the terms of that certain Lock-Up Letter Agreement, by and between the issuer and the Reporting Person, dated as of June 1, 2026, and is subject to clause (h) thereunder.

Footnote F2

Represents a weighted average price. These shares were sold as part of block trades for multiple security holders of the issuer on July 2, 2026, at a price ranging from $10.48 to $10.53. 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.