QMCO

EX-99.1

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EX-99.1

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Quantum Reports Fiscal Fourth Quarter and Full Year 2026 Financial Results

Fourth Quarter Revenue Increases 27% Year-over-Year to $78.0 Million

CENTENNIAL, Colo. — Jun. 25, 2026 — Quantum Corporation (Nasdaq: QMCO) ("Quantum" or the "Company"), today announced financial results for its fiscal fourth quarter and full year 2026 ended March 31, 2026.

Fiscal Fourth Quarter 2026 Financial Summary

•Revenue increased 27% year-over-year to $78.0 million, exceeding guidance of $68 million, plus or minus $2 million

•GAAP operating expenses were $30.4 million; non-GAAP adjusted operating expenses were $27.5 million, reflecting a $2.0 million year-over-year reduction

•GAAP net loss was $9.5 million, or ($0.66) per share

•Non-GAAP adjusted net loss was $3.1 million, or ($0.21) per share, which is a $9 million improvement year-over-year

•Adjusted EBITDA was $1.0 million

“Quantum delivered strong fourth quarter results with revenue of $78 million, representing 27% growth year-over-year. This performance reflects robust demand for our tiered storage solutions as the proliferation of AI-driven data rapidly reshapes the industry and enterprise storage infrastructure requirements,” commented Hugues Meyrath, CEO of Quantum. “With the exploding volume of data, rising storage costs, and increasing power constraints, organizations are rethinking how they store, manage, and protect their most valuable assets. Quantum is uniquely positioned to help customers reduce their dependence on constrained, high-cost components with differentiated, power-efficient storage solutions that provide long-term data resilience.

“As we look to fiscal year 2027, Quantum is operating from a position of renewed strength and expanding strategic relevance. Over the past year, we have transformed our business by significantly lowering our cost structure, while also sharpening our sales execution and go-to-market strategy. And more recently, we successfully completed a series of transactions that eliminated our outstanding debt and added cash to the balance sheet in support of our growth initiatives. Although supply chain constraints remain an industry-wide challenge, we are seeing clear momentum in our pipeline and backlog. We remain committed to executing with discipline as we continue to drive toward long-term sustainable growth, margin expansion and value creation for our shareholders.”

Fiscal Fourth Quarter 2026 vs. Prior Fiscal Year

Revenue for the fiscal fourth quarter of 2026 was $78.0 million, compared to $61.3 million in the prior year fourth quarter. GAAP gross profit in the fiscal fourth quarter of 2026 was $27.8 million, or 35.7% of revenue, compared to $24.2 million, or 39.6% of revenue, in the fiscal fourth quarter of 2025.

Total GAAP operating expenses in the fiscal fourth quarter of 2026 were $30.4 million, or 39.0% of revenue, compared to $35.8 million, or 58.5% of revenue, in the prior year. Total operating expenses on a non-GAAP basis for the fiscal fourth quarter of 2026 were $27.5 million, compared to $29.4 million in the fiscal fourth quarter of 2025.

GAAP net loss in the fiscal fourth quarter of 2026 was $9.5 million, or ($0.66) per share, compared to a net loss of $7.7 million, or ($1.26) per share, in the fiscal fourth quarter of 2025. Excluding stock compensation, restructuring charges and other non-recurring costs, non-GAAP adjusted net loss in the fiscal fourth quarter of 2026 was $3.1

1

million, or ($0.21) per share, compared to adjusted net loss of $12.1 million, or ($1.98) per share, in the prior year fourth quarter.

Non-GAAP adjusted EBITDA in the fiscal fourth quarter of 2026 was $1.0 million, compared to negative $3.9 million in the fiscal fourth quarter of 2025.

For a reconciliation of GAAP to non-GAAP financial results, please see the financial reconciliation tables below.

Liquidity and Debt (as of March 31, 2026)

•Cash, cash equivalents and restricted cash were $16.2 million, compared to $16.6 million as of March 31, 2025.

•Total interest expense for the three- and twelve-month periods were $2.9 million and $21.6 million, respectively, compared to $6.8 million and $24.0 million for the same periods a year ago.

•Outstanding term loan debt, excluding debt issuance costs, was $55.9 million, compared to $102.5 million as of March 31, 2025.

•The new convertible note was fair valued at $90.0 million.

Business Outlook

Fiscal first quarter 2027 guidance is as follows:

•Revenue of $75.0 million, plus or minus $2 million

•Non-GAAP adjusted operating expenses of $27 million, plus or minus $1 million

•Non-GAAP adjusted basic net loss per share of ($0.15), plus or minus $0.10

•Non-GAAP adjusted EBITDA of $1.5 million, plus or minus $1 million

This assumes an effective annual tax rate of 3%; non-GAAP adjusted net loss per share assumes an average basic share count of approximately 24 million in the first quarter of fiscal year 2027.

Conference Call and We

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EX-99.1

Exhibit 99.1

Quantum Announces Preliminary Fiscal Fourth Quarter 2026 Financial Results

CENTENNIAL, Colo. — June 2, 2026 — Quantum Corporation (Nasdaq: QMCO) (“Quantum” or the “Company”), today announced select preliminary unaudited financial results for its fiscal fourth quarter of 2026 ended March 31, 2026.

Based on unaudited financials, the Company expects the following:

•

Revenue of approximately $77.5 million, plus or minus $2 million, above the high-end of the guided range of $68 million, plus or minus $2 million

•

GAAP operating expenses of approximately $30.5 million

•

Cash of approximately $15.5 million

Quantum expects to report its full results for the fiscal fourth quarter and full fiscal year of 2026 by mid-June 2026.

About Quantum

Quantum delivers end-to-end data management solutions designed for the AI era. With over four decades of experience, our data platform has allowed customers to extract the maximum value from their unique, unstructured data. From high-performance ingest that powers AI applications and demanding data-intensive workloads, to massive, durable data lakes to fuel AI models, Quantum delivers comprehensive and cost-efficient solutions. Leading organizations in life sciences, government, media and entertainment, research, and industrial technology trust Quantum with their most valuable asset – their data. For more information visit www.quantum.com.

Quantum is listed on Nasdaq (QMCO). Quantum and the Quantum logo are registered trademarks of Quantum Corporation and its affiliates in the United States and/or other countries. All other trademarks are the property of their respective owners.

Forward-Looking Information

The results reported in this press release are preliminary and unaudited and are subject to change. The Company has not yet completed its financial close process for the fiscal fourth quarter of 2026. The financial results in this earnings report does not present all necessary information for an understanding of the Company’s results of operations for the fiscal fourth quarter of 2026. As the Company completes its financial close process and finalizes its financial statements, and as its independent auditors complete their review of the Company’s financial statements, it is possible the Company may identify items that require adjustments to the preliminary financial information set forth in this press release, and those changes could be material. The Company does not intend to update such financial information prior to the filing of its Form 10-K with the Securities and Exchange Commission (the “SEC”) for the fiscal year ended March 31, 2026, except as otherwise required by law.

The information provided in this press release includes forward-looking statements within the meaning of

Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. These forward-looking statements are largely based on our current expectations and projections about future events and financial trends affecting our business. Such forward-looking statements include, in particular, statements related to our preliminary unaudited financial results for the fiscal fourth quarter ended March 31, 2026, including the timing of reporting such results.

These forward-looking statements may be identified by the use of terms and phrases such as “anticipates”, “believes”,

“can”, “could”, “estimates”, “expects”, “forecasts”, “intends”, “may”, “plans”, “projects”, “targets”, “will”, and similar expressions or variations of these terms and similar phrases. Additionally, statements concerning future matters and other statements regarding matters that are not historical are forward-looking statements. Investors are cautioned that these forward-looking statements relate to future events or our future performance and are subject to business, economic, and other risks and uncertainties, both known and unknown, that may cause actual results, levels of activity, performance or achievements to be materially different from those expressed or implied by any forward-looking statements.

These forward-looking statements involve risks

and uncertainties that could cause actual results to differ materially from those projected, including without limitation, the following: risks related to the completion of the Company’s annual financial close process and the independent auditors’ review and audit of the Company’s financial statements for the full fiscal year; any changes to the assumptions underlying the Company’s closing process and auditors’ review; risks that the Company may identify additional items that require adjustments to the preliminary financial information; risks related to the need to address the many challenges facing our business; the impact macroeconomic and inflationary conditions on our business, including potential disruptions to our supply chain, employees, operations, sales and overall market conditions;

qtm-202602170000709283FALSE00007092832026-02-172026-02-17

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): February 17, 2026

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

Delaware001-1344994-2665054 (State or other jurisdiction of incorporation or organization)(Commission File No.)(I.R.S. Employer Identification No.)

10770 E. Briarwood Avenue Centennial,CO80112 (Address of Principal Executive Offices)(Zip Code)

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

N/A (Former name or former address, if changed since last report)

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

Title of each classTrading SymbolName of each exchange on which registered Common Stock, $0.01 par value per shareQMCONasdaq 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 2.02     Results of Financial Operations and Financial Condition.

On February 17, 2026, Quantum Corporation (the “Company”) reported its financial results for the fiscal quarter ended December 31, 2025. A copy of the Company’s earnings release is furnished as Exhibit 99.1 to this report.

The information in this Item 2.02, including Exhibit 99.1 hereto, is being furnished and shall not be deemed “filed” for the purposes of Section 18 of the Securities Exchange Act of 1934, or otherwise subject to the liabilities of that Section. The information in this Item 2.02 shall not be incorporated by reference into any registration statement or other document pursuant to the Securities Act of 1933 except as shall be expressly set forth by specific reference in such filing.

Item 9.01    Financial Statements and Exhibits.

(d) Exhibits

Exhibit No. Description

99.1Press Release dated February 17, 2026.

104Cover Page Interactive Data File (embedded within the Inline XBRL document).

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 hereunto duly authorized.

Quantum Corporation (Registrant)

February 17, 2026/s/ William H. White (Date)William H. White Chief Financial Officer