QMCO · Nasdaq · CIK 0000709283

QUANTUM CORP /DE/

QUANTUM CORP /DE/’s most recent SEC filing in our snapshot is a Form 8-K filed on Oct 9, 2026. In fiscal 2026 (year ended Mar 31, 2026) it reported revenue of $279.6M and net income of -$101.0M, according to its XBRL data on EDGAR. Its EDGAR record lists 31 Form 4 insider filings from the 12 months before our last refresh.

SEC EDGAR snapshot updated Oct 27, 2026, 11:27 PM EDT. See all filings on sec.gov.

Revenue, FY2026
$279.6M
Net income, FY2026
-$101.0M
Form 4 filings on record, past 12 months
31

Company overview

Legal name (as filed)
QUANTUM CORP /DE/
Ticker
QMCO
SEC Central Index Key (CIK)
0000709283
Industry (SIC)
Computer Storage Devices (code 3572)
Business address
CENTENNIAL, CO
State or country of incorporation
DE
Fiscal year ends
March 31
SEC filer category
Accelerated filer<br>Smaller reporting company
Position in SEC ticker list
#2707 of the 3,000 companies we track

Five-year financial highlights

Full-year figures from QUANTUM CORP /DE/’s annual reports, as tagged in XBRL and published by the SEC. Amounts are in U.S. dollars; the fiscal year is named for the calendar year in which it ends.

Revenue
$372.8MFY2022$422.1MFY2023$311.6MFY2024$274.1MFY2025$279.6MFY2026
Net income
$38.4MFY2022-$18.4MFY2023-$41.3MFY2024-$115.1MFY2025-$101.0MFY2026
QMCO annual results
ItemFY2022
ended Mar 31, 2022		FY2023
ended Mar 31, 2023		FY2024
ended Mar 31, 2024		FY2025
ended Mar 31, 2025		FY2026
ended Mar 31, 2026
Revenue$372.8M$422.1M$311.6M$274.1M$279.6M
Net income$38.4M-$18.4M-$41.3M-$115.1M-$101.0M
Diluted EPS-$0.32-$0.28-$8.68-$22.35-$7.97
Total assets$201.6M$213.7M$187.6M$155.4M$156.9M
Cash and equivalents$5.2M$26.0M$25.7M$16.5M$15.6M

XBRL tags used: revenue = Revenues; netIncome = NetIncomeLoss; assets = Assets; eps = EarningsPerShareDiluted; cash = CashAndCashEquivalentsAtCarryingValue. EPS is shown as originally reported for each year and may not be adjusted for later stock splits. A dash means the company did not report that item in a form we could match.

How to read these numbers

Revenue is the money a company brings in from selling its products and services; net income is what is left after all expenses, interest and taxes. Diluted EPS spreads net income across every share that could exist if options and convertible securities were exercised. Total assets and cash are balance-sheet figures measured on the last day of the fiscal year. For the full story — segment results, one-time charges, guidance — read Management’s Discussion and Analysis in the Form 10-K.

Latest key reports

The most recent filing of each major report type, even if it falls outside the 40 newest filings below.

QMCO latest annual, quarterly, current and proxy reports
FiledFormWhat it isOriginal
Jun 25, 202610-KAnnual report· period Mar 31, 2026Document · Index
Aug 11, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Oct 9, 20268-KDirector or officer change; Other events· period Oct 9, 2026Document · Index
Jul 29, 2026DEF 14ADefinitive proxy statement· period Sep 15, 2026Document · Index

Recent SEC filings

The 40 newest documents filed by or about QUANTUM CORP /DE/, by form type:

4 ×158-K ×9SCHEDULE 13G ×33 ×1S-8 ×110-Q ×1ARS ×1DEFA14A ×1DEF 14A ×1424B3 ×1EFFECT ×1S-1 ×110-K ×1NT 10-K ×1SCHEDULE 13D/A ×1SD ×1
QMCO recent filings
FiledFormWhat it isOriginal
Oct 9, 20268-KDirector or officer change; Other events· period Oct 9, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Oct 5, 20264Statement of changes in beneficial ownership (insider trade)· period Oct 1, 2026Document · Index
Sep 28, 20268-KDirector or officer change; Other events· period Sep 28, 2026Document · Index
Sep 25, 2026S-8Registration of employee benefit plan securitiesDocument · Index
Sep 17, 20268-KShareholder vote results· period Sep 15, 2026Document · Index
Sep 8, 20263Initial statement of beneficial ownership· period Sep 1, 2026Document · Index
Sep 1, 20268-KDirector or officer change; Other events· period Sep 1, 2026Document · Index
Aug 14, 20268-KDirector or officer change· period Aug 11, 2026Document · Index
Aug 14, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Aug 14, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Aug 11, 202610-QQuarterly report· period Jun 30, 2026Document · Index
Aug 10, 20268-KResults of operations· period Aug 10, 2026Document · Index
Aug 10, 2026SCHEDULE 13GPassive beneficial ownership report (over 5%)Document · Index
Aug 5, 20264Statement of changes in beneficial ownership (insider trade)· period Aug 3, 2026Document · Index
Jul 29, 2026ARSARS· period Mar 31, 2026Document · Index
Jul 29, 2026DEFA14AAdditional proxy soliciting materialsDocument · Index
Jul 29, 2026DEF 14ADefinitive proxy statement· period Sep 15, 2026Document · Index
Jul 27, 2026424B3424B3Document · Index
Jul 24, 2026EFFECTEFFECTDocument · Index
Jul 14, 2026S-1Registration statement (IPO and other offerings)Document · Index
Jul 7, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 2, 2026Document · Index
Jul 7, 20264Statement of changes in beneficial ownership (insider trade)· period Jul 2, 2026Document · Index
Jun 25, 202610-KAnnual report· period Mar 31, 2026Document · Index
Jun 25, 20268-KResults of operations· period Jun 25, 2026Document · Index
Jun 15, 2026NT 10-KNT 10-K· period Mar 31, 2026Document · Index
Jun 8, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 1, 2026Document · Index
Jun 8, 20264Statement of changes in beneficial ownership (insider trade)· period Jun 4, 2026Document · Index
Jun 8, 2026SCHEDULE 13D/AActive beneficial ownership report (over 5%)Document · Index
Jun 5, 20268-KAgreement terminated; Shareholder director nominations; Other events· period Jun 4, 2026Document · Index
Jun 2, 20268-KMaterial agreement; Results of operations; New financial obligation; Unregistered equity sale; Other events· period Jun 1, 2026Document · Index
May 29, 2026SDSpecialized disclosure report (conflict minerals)Document · Index
Apr 3, 20264Statement of changes in beneficial ownership (insider trade)· period Apr 1, 2026Document · Index

Insider filing activity

31 Form 4 filings appear in QUANTUM CORP /DE/’s EDGAR record between Oct 28, 2025 and our last refresh. Most are reports by the company’s own directors, officers and 10% owners, but EDGAR also lists a Form 4 under a company when the company itself is the insider — for example, when it owns more than 10% of another public company. Foreign private issuers’ own insiders generally do not file Form 4. A high count is not by itself a signal: many Form 4s report routine stock awards, tax withholding or sales under pre-arranged Rule 10b5-1 plans. Open each filing to see the transaction code, share count and price. What a Form 4 shows.

Other companies in Computer Storage Devices

All 6 companies in Computer Storage Devices· Companies headquartered in Colorado

On Amazon

Popular tools for investors

As an Amazon Associate I earn from qualifying purchases.

Electronics Plaud Note Pro AI Voice Recorder An AI voice recorder that turns earnings calls and meetings into notes. View on Amazon → Electronics Amazon Kindle Paperwhite Signature Edition 32GB Read investing classics and long reports without eye strain. View on Amazon → Electronics Apple 2026 MacBook Air 13-inch Laptop A lightweight laptop for spreadsheets and filing research. View on Amazon →

Source

  • U.S. Securities and Exchange Commission, EDGAR submissions for CIK 0000709283 and XBRL company facts. QUANTUM CORP /DE/ on EDGAR.
  • Snapshot updated Oct 27, 2026, 11:27 PM EDT. The SEC does not endorse OpenFilings. Company names and tickers are used only to identify the filer; no logos are shown.

Not investment advice. This page summarizes public SEC filings for information only. Figures may contain errors or omissions; confirm everything in the original filing before relying on it.