UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): October 2028, 2025


Quantum Corporation
(Exact name of registrant as specified in its charter)

Delaware

001-13449

94-2665054

(State or other jurisdiction of incorporation or organization)

(Commission File No.)

(I.R.S. Employer Identification No.)

10770 E. Briarwood Avenue

Centennial,

80112

(Address of Principal Executive Offices)

(Zip Code)


(408)			944-4000
Registrant's telephone number, including area code


N/A
(Former name, former address and former fiscal year, if changed since last report)

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol

Name of each exchange on which registered

Common Stock, $0.01 par value per share

QMCO

Nasdaq Global Market

Check the appropriate box below if the Form 8-K ﬁling is intended to simultaneously satisfy the ﬁling obligation of the registrant under any of the following provisions:

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 52.0802 ~~Shareholder~~Results ~~Director~~of ~~Nominations.~~Financial Operations and Financial Condition.

ToOn ~~the~~October ~~extent~~28, ~~applicable~~2025, Quantum Corporation (the ~~information~~“Company”) inprovided ~~Item~~preliminary 8financial results for its fiscal second quarter ended September 30, 2025.01 ofA ~~this~~copy ~~Current~~of ~~Report~~the onCompany’s ~~Form~~press ~~8-K~~release is ~~incorporated~~furnished byas ~~reference~~Exhibit ~~into~~99.1 to this ~~Item~~Current 5Report on Form 8-K.~~08.~~

The information in Item 2.02 of this Current Report on Form 8-K, including the preliminary financial results for the quarter ended September 30, 2025 contained in Exhibit 99.~~01 Other~~1, ~~Events~~shall not be deemed to be filed for purposes of Section 18 of the Securities Exchange Act of 1934 (the “Exchange Act”), or otherwise subject to the liability of that section, and shall not be incorporated by reference into any registration statement or other document filed under the Securities Act of 1933 or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.

~~Quantum~~Item ~~Corporation~~9.01 Financial ~~(the~~Statements ~~“Company”)~~and ~~has established December 16, 2025 as the date for its 2025 annual meeting of stockholders (the “Annual Meeting”)~~Exhibits.

A stockholder proposal not included in the proxy statement for the Annual Meeting will not be eligible for presentation at the meeting unless the stockholder gives timely notice of the proposal in writing to the Company’s Secretary at its principal executive offices and otherwise complies with the provisions of the Company’s Amended and Restated Bylaws (the “Bylaws”). To be timely, the Bylaws provide that the Company must have received the stockholder’s notice not later than the 45th day nor earlier than the 75th day before the one-year anniversary of the date on which the Company first mailed its proxy materials or a notice of availability of proxy materials (whichever is earlier) for the preceding year’s annual meeting of stockholders. However, because the date of the Annual Meeting is delayed by more than 60 days after the one-year anniversary of the 2024 annual meeting, the Company must receive the stockholder’s notice not earlier than the close of business on the 120th day before the Annual Meeting and not later than the close of business on the later of (i) the 90th day before the Annual Meeting, and (ii) the tenth day after public announcement of the Annual Meeting date. For the Annual Meeting, stockholders must submit written notice to the Secretary in accordance with the Bylaws no later than the close of business on October 30, 2025.


Exhibit Number						Description
99.1						Press Release dated October 28, 2025.
104						Cover Page Interactive Data File (embedded within the Inline XBRL document).

In addition to complying with the October 30, 2025 deadline, stockholder proposals intended to be considered for inclusion in the Company’s proxy materials and director nominations for the Annual Meeting must also comply with all applicable Securities and Exchange Commission rules, including Rule 14a-8 and Rule 14a-19, Delaware corporate law, and the Bylaws in order to be eligible for inclusion in the proxy materials for the Annual Meeting.

SIGNATURE

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.

Quantum Corporation

(Registrant)

October 20, 2025

/s/ Laura A. Nash

October 28, 2025

/s/ Laura A. Nash

(Date)

Laura A. Nash

Chief Accounting Officer

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