Quantum CFO awarded 25,000 restricted stock units

White William Hillis reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

White William Hillis reported acquisition or exercise transactions in this Form 4 filing.

Quantum Corp. reported an insider equity award to its Chief Financial Officer, William Hillis White. He received a grant of 25,000 restricted stock units, each representing one share of Quantum common stock. These RSUs vest in three equal annual installments starting on March 2, 2027, contingent on his continued service with the company through each vesting date.

Insider Trade Summary

Grant/Award: 25,000 shares

Grant/Award 1 txn

Insider White William Hillis

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	25,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 25,000 shares (Direct)

Footnotes (1)

1. F1. Grant of 25,000 restricted stock units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs vest in three equal annual installments beginning on March 2, 2027, subject to the Reporting Person's continued service through each vesting date.

FAQ

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What did Quantum Corp. (QMCO) disclose in this Form 4 filing?

Quantum Corp. disclosed that its Chief Financial Officer, William Hillis White, received a grant of 25,000 restricted stock units. Each unit represents one share of common stock and is part of his equity compensation, subject to a multi-year vesting schedule tied to continued service.

How many Quantum (QMCO) shares are covered by the CFO’s new RSU grant?

The CFO’s award covers 25,000 restricted stock units, each equal to one share of Quantum common stock. This means he may ultimately receive 25,000 shares, assuming all vesting conditions are satisfied over the specified three-year period.

What is the vesting schedule for the Quantum (QMCO) CFO’s 25,000 RSUs?

The 25,000 restricted stock units vest in three equal annual installments beginning on March 2, 2027. Each year, one-third of the grant becomes eligible to settle into shares, provided the Chief Financial Officer remains in service through each vesting date.

Did the Quantum (QMCO) CFO buy these shares on the open market?

No, the Chief Financial Officer did not buy shares on the open market. The Form 4 shows a grant or award acquisition of 25,000 restricted stock units at a stated price of $0.00 per unit, reflecting non-cash equity compensation rather than a market purchase.

What conditions apply to the Quantum (QMCO) CFO’s RSU award?

The RSU award is contingent on the CFO’s continued service. The footnote states that vesting occurs in three equal annual installments starting March 2, 2027, and each installment requires that the reporting person remain in service through the applicable vesting date.

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Accepted by SEC EDGAR 03/04/2026 - 04:06 PM EST Learn about SEC filing dates

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^*

White William Hillis

(Last) (First) (Middle)

C/O QUANTUM CORPORATION

10770 E. BRIARWOOD AVE.

(Street)

CENTENNIAL CO 80112

(City) (State) (Zip)

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 Financial Officer

3. Date of Earliest Transaction (Month/Day/Year)
03/04/2026

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

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

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

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	03/04/2026		A		25,000(1)	A	$0	25,000	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. Grant of 25,000 restricted stock units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs vest in three equal annual installments beginning on March 2, 2027, subject to the Reporting Person's continued service through each vesting date.

Remarks:

	/s/ Tara Ilges, attorney-in-fact for William Hillis White	03/04/2026
	** 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.