William Hillis White - 04 Mar 2026 Form 4 Insider Report for QUANTUM CORP /DE/ (QMCO)

Role: Chief Financial Officer
Signature: /s/ Tara Ilges, attorney-in-fact for William Hillis White
Issuer symbol: QMCO
Transactions as of: 04 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 04 Mar 2026, 16:06:22 UTC
Previous filing: 09 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
White William Hillis	Chief Financial Officer	C/O QUANTUM CORPORATION, 10770 E. BRIARWOOD AVE., CENTENNIAL	/s/ Tara Ilges, attorney-in-fact for William Hillis White	04 Mar 2026	0002108496

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	QMCO	Common Stock	Award		+25,000		$0.000000^*	25,000	04 Mar 2026	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
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.