Quantum director Yue Zhou White gets 12,000 stock units

The award vests in full on the earlier of October 1, 2027 or the next annual meeting, subject to continued board service.

Rhea-AI Filing Summary

Quantum Corp director Yue Zhou White received 12,000 restricted stock units on October 1, 2026. Each unit represents a contingent right to receive one share of QMCO common stock. The units vest in full on the earlier of October 1, 2027 or the date of the company's next annual meeting, subject to her continued service on the board. Her reported direct position after the award was 53,139 shares.

Insider Trade Summary

Grant/Award: 12,000 shares

Grant/Award 1 txn

Insider White Yue Zhou

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock F1	12,000	$0.00	$0.00

Holdings After Transaction: Common Stock — 53,139 shares (Direct)

Footnotes (1)

1. F1. Grant of restricted stock units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs vest in full on the earlier of October 1, 2027 or the date of the Companys next annual meeting of stockholders, in each case subject to the Reporting Persons continued service on the Companys Board of Directors.

Key Figures

Restricted stock units awarded: 12,000 RSUs Reported direct position after award: 53,139 shares Full vesting schedule: Earlier of October 1, 2027 or the date of the next annual meeting

3 metrics

Restricted stock units awarded 12,000 RSUs Awarded October 1, 2026

Reported direct position after award 53,139 shares Following the October 1, 2026 transaction

Full vesting schedule Earlier of October 1, 2027 or the date of the next annual meeting Subject to continued service on the board

Key Terms

restricted stock units (RSUs), contingent right, vest in full

3 terms

restricted stock units (RSUs) financial

"Grant of restricted stock units (RSUs)"

Restricted stock units (RSUs) are a type of company promise to give employees shares of stock in the future, usually after certain conditions like working for a set time. They are like a gift promised today that you receive later, which can become valuable if the company's stock price goes up. RSUs matter because they are a way companies reward employees and can be a significant part of compensation.

contingent right financial

"each of which represents a contingent right to receive one share"

vest in full financial

"The RSUs vest in full on the earlier of October 1, 2027"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

How many RSUs did QMCO director Yue Zhou White receive?

Yue Zhou White received 12,000 restricted stock units on October 1, 2026. Each unit represents a contingent right to receive one share of QMCO common stock.

When do Yue Zhou White's QMCO RSUs vest?

The units vest in full on the earlier of October 1, 2027 or the date of the company's next annual meeting, subject in either case to her continued service on the board.

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

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Available on EDGAR 10/05/2026 - 05:36 PM Accepted by SEC EDGAR 10/05/2026 - 05:36 PM 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 Yue Zhou

(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
	Officer (give title below)		Other (specify below)

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
10/01/2026

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	10/01/2026		A		12,000(1)	A	$0	53,139	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 restricted stock units (RSUs), each of which represents a contingent right to receive one share of common stock of QMCO. The RSUs vest in full on the earlier of October 1, 2027 or the date of the Companys next annual meeting of stockholders, in each case subject to the Reporting Persons continued service on the Companys Board of Directors.

Remarks:

	/s/ Tara Ilges, Attorney-In-Fact for Yue Zhou White	10/05/2026
	** 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)