(QMCO)

Reporting relationship: Chief Revenue Officer
Issuer ticker: QMCO
Reported as of: 03 Aug 2026
Net transaction value: -$15,856
SEC form: 4
Accepted by SEC: 05 Aug 2026, 16:10:13 UTC
Prior SEC filing: 03 Apr 2026
Source filing: View source filing
Reporting owner signature: Tara Ilges, attorney-in-fact for Anthony Craythorne

Key filing fact

Anthony Craythorne filed Form 4 for QUANTUM CORP /DE/ (QMCO) on 05 Aug 2026.

Key facts

This page summarizes Anthony Craythorne's Form 4 filing for QUANTUM CORP /DE/ (QMCO).
1 reported transaction and 0 derivative rows are listed below.
Accepted by SEC: 05 Aug 2026, 16:10.

Change

Previous filing in this sequence was filed on 03 Apr 2026.
Current net transaction value: -$15,856.

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 0002075430 Primary reporting owner

Craythorne Anthony

Relationship: Chief Revenue Officer
Address: C/O QUANTUM CORPORATION, 10770 E. BRIARWOOD AVE, CENTENNIAL
Signature: Tara Ilges, attorney-in-fact for Anthony Craythorne
Signature date: 05 Aug 2026

Reported non-derivative transactions

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

QMCO transaction

Common Stock

Sale

Transaction value: $15,856
Shares: -1,478
Change %: -9.9%
Price: $10.73
Shares after: 13,522
Date: 03 Aug 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 January 1, 2026. 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

The shares were sold on August 3, 2026 at a price of $10.7281 per share.