Quantum Corp (QMCO) CRO auto-sells 1,478 shares to cover RSU taxes

Rhea-AI Filing Summary

Quantum Corp Chief Revenue Officer Anthony Craythorne reported selling 1,478 shares of common stock on August 3, 2026 at $10.7281 per share. The shares were automatically sold on a non-discretionary basis to cover tax withholding from vesting of restricted stock units granted on January 1, 2026, leaving him with 13,522 shares held directly, which remain subject to a Lock-Up Letter Agreement dated June 1, 2026.

Insider Trade Summary

Net Seller: 1,478 shares

Net Sell 1 txn

Insider Craythorne Anthony

Role Chief Revenue Officer

Sold 1,478 shs ($16K)

Type	Security	Shares	Price	Value
Sale	Common Stock F1, F2	1,478	$10.7281	$16K

Holdings After Transaction: Common Stock — 13,522 shares (Direct)

Footnotes (2)

1. 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.
2. F2. The shares were sold on August 3, 2026 at a price of $10.7281 per share.

Key Figures

Shares sold: 1,478 shares Sale price: $10.7281 per share Shares held after transaction: 13,522 shares +1 more

4 metrics

Shares sold 1,478 shares Common stock sold by Chief Revenue Officer on August 3, 2026

Sale price $10.7281 per share Price received for the 1,478 Quantum Corp common shares sold

Shares held after transaction 13,522 shares Direct Quantum Corp holdings of Anthony Craythorne following the sale

Net shares sold 1,478 shares Net change in position from the reported insider sale

Key Terms

restricted stock units, tax withholding obligations, Lock-Up Letter Agreement, non-discretionary basis

4 terms

restricted stock units financial

"in connection with the vesting of restricted stock units granted"

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

"sold on a non-discretionary basis, to cover tax withholding obligations"

Lock-Up Letter Agreement regulatory

"subject to the terms of that certain Lock-Up Letter Agreement"

non-discretionary basis financial

"shares automatically sold on a non-discretionary basis, to cover tax"

AI-generated analysis. How Rhea-AI works. Not financial advice.

See more from StockTitan in Google Search and AI answers. Adds StockTitan as a preferred source · opens Google

Add on Google Not now

Form 4 Insider Transactions: What Each Field Means →

Available on EDGAR 08/05/2026 - 04:10 PM Accepted by SEC EDGAR 08/05/2026 - 04:10 PM Learn about SEC filing dates

FAQ

What insider transaction did QMCO Chief Revenue Officer Anthony Craythorne report?

Anthony Craythorne reported an automatic sale of 1,478 Quantum Corp (QMCO) common shares on August 3, 2026 at $10.7281 per share. The shares were sold on a non-discretionary basis to cover tax withholding triggered by the vesting of restricted stock units granted on January 1, 2026.

How many Quantum Corp (QMCO) shares does Anthony Craythorne hold after this Form 4 transaction?

After the reported transaction, Anthony Craythorne directly holds 13,522 shares of Quantum Corp (QMCO) common stock. This figure reflects his position following the automatic tax-withholding sale of 1,478 shares related to the vesting of previously granted restricted stock units.

Was Anthony Craythorne’s QMCO share sale made under a Rule 10b5-1 trading plan?

The Rule 10b5-1 checkbox was not marked for Anthony Craythorne’s Quantum Corp (QMCO) transaction. Instead, the footnotes state the shares were automatically sold on a non-discretionary basis solely to satisfy tax withholding obligations arising from the vesting of restricted stock units.

What price did Anthony Craythorne receive per QMCO share in the reported sale?

Anthony Craythorne’s reported sale of Quantum Corp (QMCO) common stock was executed at $10.7281 per share. This per-share price applied to the 1,478 shares automatically sold to cover tax withholding obligations associated with the vesting of restricted stock units granted earlier in 2026.

Why were Anthony Craythorne’s QMCO shares sold according to the Form 4 footnotes?

The footnotes explain that the 1,478 QMCO shares were automatically sold on a non-discretionary basis to cover tax withholding obligations. These obligations arose in connection with the vesting of restricted stock units that had been granted to Anthony Craythorne on January 1, 2026.

How is Anthony Craythorne’s QMCO position affected by a Lock-Up Letter Agreement?

The reported securities remain subject to a Lock-Up Letter Agreement dated June 1, 2026 between Quantum Corp (QMCO) and Anthony Craythorne. The disclosure notes the shares are subject to the terms of this agreement, including clause (h) referenced in the filing’s footnotes.

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^*

Craythorne Anthony

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Revenue Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
08/03/2026

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	08/03/2026		S		1,478(1)	D	$10.7281(2)	13,522	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 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. The shares were sold on August 3, 2026 at a price of $10.7281 per share.

Remarks:

	Tara Ilges, attorney-in-fact for Anthony Craythorne	08/05/2026
	** 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)