Quantum (QMCO) CEO’s automatic 6,232-share sale covers RSU tax withholding

Rhea-AI Filing Summary

Quantum Corp (QMCO) President & CEO Hugues Meyrath reported an automatic sale of 6,232 shares of common stock. The shares were sold on July 2, 2026 at a weighted average price of about $10.51 per share, in block trades ranging from $10.48 to $10.53.

According to the footnotes, the shares were automatically sold on a non-discretionary basis to cover tax withholding obligations tied to the vesting of restricted stock units granted on November 1, 2025 and January 1, 2026. After this transaction, Meyrath directly holds 118,468 shares of Quantum common stock.

Insider Trade Summary

Net Seller: 6,232 shares ($65,498)

Net Sell 1 txn

Insider Meyrath Hugues

Role President & CEO

Sold 6,232 shs ($65K)

Type	Security	Shares	Price	Value
Sale	Common Stock	6,232	$10.51	$65K

Holdings After Transaction: Common Stock — 118,468 shares (Direct, null)

Footnotes (1)

1. 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 November 1, 2025 and 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. 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.

Key Figures

Shares sold: 6,232 shares Weighted average sale price: $10.51 per share Sale price range: $10.48–$10.53 per share +3 more

6 metrics

Shares sold 6,232 shares Automatic sale on July 2, 2026

Weighted average sale price $10.51 per share Block trades on July 2, 2026

Sale price range $10.48–$10.53 per share Block trades for multiple holders on July 2, 2026

Shares held after transaction 118,468 shares Direct ownership following July 2, 2026 sale

RSU grant dates November 1, 2025 and January 1, 2026 Restricted stock units whose vesting triggered tax sale

Lock-Up Letter date June 1, 2026 Agreement governing the reported securities, clause (h)

Key Terms

restricted stock units, tax withholding obligations, Lock-Up Letter Agreement, block trades, +1 more

5 terms

restricted stock units financial

"in connection with the vesting of restricted stock units granted on November 1, 2025 and January 1, 2026"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax withholding obligations financial

"automatically sold on a non-discretionary basis, to cover tax withholding obligations in connection with the vesting"

Lock-Up Letter Agreement financial

"subject to the terms of that certain Lock-Up Letter Agreement, by and between the issuer and the Reporting Person"

block trades financial

"These shares were sold as part of block trades for multiple security holders of the issuer"

A block trade is a single, large buy or sell of shares or bonds arranged privately between big traders rather than piecemeal on the public market. Think of it like buying a whole shipment at once instead of many small shopping trips; it lets large holders move big positions with less immediate disruption but can signal strong buying or selling pressure and cause price swings once the trade is known, so investors watch block trades for clues about market sentiment and liquidity.

weighted average price financial

"Represents a weighted average price. These shares were sold as part of block trades"

Weighted average price is the average price of a security where each trade or component is counted according to its size, so bigger trades pull the average more than smaller ones. Think of it like calculating the average cost of a grocery haul where items you bought more of have greater influence on the final per-item cost. Investors use it to understand the true average price paid or received, judge execution quality, and compare trading performance against market movement.

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Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 07/07/2026 - 04:08 PM Accepted by SEC EDGAR 07/07/2026 - 04:07 PM Learn about SEC filing dates

FAQ

What insider transaction did Quantum Corp (QMCO) report for Hugues Meyrath?

Quantum’s President & CEO Hugues Meyrath reported an automatic sale of 6,232 common shares. The shares were sold on July 2, 2026 to satisfy tax withholding obligations related to vesting restricted stock units granted in late 2025 and early 2026.

Was the QMCO CEO’s July 2, 2026 share sale discretionary or tax-related?

The sale was described as non-discretionary and tax-related. Footnotes state 6,232 shares were automatically sold to cover tax withholding obligations arising from vesting restricted stock units granted on November 1, 2025 and January 1, 2026.

At what price did Hugues Meyrath’s Quantum (QMCO) shares sell on July 2, 2026?

The shares sold at a weighted average price of about $10.51 per share. Footnotes note block trades for multiple holders, with individual prices ranging from $10.48 to $10.53 on that date.

How many Quantum Corp (QMCO) shares does Hugues Meyrath hold after this Form 4?

After the reported tax-related sale, Hugues Meyrath directly holds 118,468 Quantum common shares. This figure reflects his position following the automatic sale of 6,232 shares executed on July 2, 2026 to cover tax withholding obligations.

What agreements are referenced in Hugues Meyrath’s Quantum (QMCO) Form 4 filing?

The filing references a Lock-Up Letter Agreement dated June 1, 2026 between Quantum and the reporting person. The securities in this Form 4 are subject to that agreement, specifically clause (h), in addition to the Securities Exchange Act requirements.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Meyrath Hugues

(Last) (First) (Middle)

C/O QUANTUM CORPORATION

10770 E. BRIARWOOD AVE

(Street)

CENTENNIAL COLORADO 80112

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
QUANTUM CORP /DE/ [ QMCO ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
07/02/2026

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

4. If Amendment, Date of Original Filed (Month/Day/Year)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/02/2026		S		6,232(1)	D	$10.51(2)	118,468	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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 November 1, 2025 and 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.

2. 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.

Remarks:

	/s/ Tara Ilges, attorney-in-fact for Hugues Meyrath	07/07/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.
* Form 4: SEC 1474 (03-26)