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QUANTUM CORP /DE/ (QMCO) Annual Reports

Q: Where can I read QUANTUM CORP /DE/ (QMCO) annual reports?

Every year on this page links straight to the full text on SEC EDGAR. US annual reports are web pages (HTML) rather than PDFs, so you can read and search them in the browser. 4 filings are currently indexed.

Q: What is the difference between a 10-K and a 20-F?

A 10-K is the annual report of a US domestic issuer; a 20-F is filed by foreign private issuers (Taiwanese companies with US ADRs, such as TSMC, file 20-F). A 40-F applies to Canadian issuers under the MJDS.

QUANTUM CORP /DE/ is listed on Nasdaq, classified by the SEC under Computer Storage Devices (SIC 3572). This page indexes 4 annual reports, each linking to the full text on the SEC's EDGAR system.

Company profile

Exchange： Nasdaq
Fiscal year end： 03/31
SEC CIK： 709283 →

Website：Official site ↗

Financial Highlights

FY2027 Q1 (quarterly, ended 2026-06-30)
	Current	Prior year	YoY
Revenue	$80.8M	$64.3M	+25.7%
Operating income	$5.0M	$-12.6M	+140.0%
Net income	$-155.3M	$-17.2M	-802.6%
EPS (diluted)	$-7.06	$-1.87	-277.5%

Company guidance
	Period	Range
Revenue	Q4	$76M – $80M

Figures are the company’s own outlook as stated in its earnings release, not analyst estimates.

Source: SEC EDGAR (XBRL company facts); guidance from Form 8-K Exhibit 99.1

Financial history

Revenue & profit

Quarterly · In mn (USD)

Revenue 80.8 mn Net income -155 mn

Periods follow the company’s fiscal year (Apple ends in September, Walmart in January), so they differ from calendar quarters.

Show table：Income statement

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
Revenue	681	163	168	176	165	154	165	173	160	141	147	159	140	148	131	146	128	128	135	142	148	111	117	128	120	116	135	133	121	117	107	116	95.3	108	89.9	102	103	106	106	103	88.2	73.3	85.8	98.0	92.4	89.1	93.2	95.3	95.2	97.1	99.1	111	109	91.8	75.7	71.9	71.5	71.3	70.5	72.5	59.7	64.3	62.7	74.6	78.0	80.8
Gross profit	280	67.5	71.4	75.6	68.6	63.3	71.6	73.7	65.3	55.8	59.2	68.0	57.6	70.0	56.3	61.4	52.0	55.5	61.9	65.1	62.2	47.0	46.3	56.7	54.8	50.4	55.5	55.0	52.0	50.8	43.8	43.0	35.7	46.3	35.5	43.1	42.7	45.8	43.5	47.1	36.1	30.9	38.7	42.3	38.9	37.3	38.4	35.2	36.2	34.0	27.8	40.3	35.6	34.9	32.7	29.2	27.3	26.1	29.3	31.8	22.7	22.7	23.6	28.9	27.9	31.7
Operating income	29.3	3.85	9.11	11.4	0.36	-1.68	6.90	6.98	-7.01	-0.34	-9.97	-5.63	-12.9	5.85	-5.03	-0.04	-12.6	-1.51	3.85	9.60	2.46	-8.21	-9.62	1.95	-50.7	-2.07	5.35	7.25	1.09	-2.45	-4.78	-9.57	-13.9	-4.34	-3.38	3.48	-0.49	2.75	4.20	11.7	2.58	-3.49	3.50	6.09	2.31	-0.06	-0.94	-7.22	-5.62	-7.08	-11.2	1.77	-5.67	-5.85	-3.71	-6.22	-13.8	-17.7	-6.93	-3.86	-13.2	-12.6	-8.16	-1.19	-2.56	5.04
Net income	16.6	-2.70	3.03	5.86	-1.65	-5.23	3.56	3.91	-11.1	-17.5	-12.3	-8.15	-14.5	3.39	-7.96	-2.41	-14.4	-4.32	1.25	6.93	12.9	-10.8	-11.2	-0.3	-52.4	-3.79	3.83	5.01	1.91	-3.67	-7.86	-10.2	-23.9	-7.48	-21.6	-4.28	-9.41	-3.81	-2.31	4.75	-3.84	-10.7	-4.59	-2.67	-17.5	-4.15	-9.25	-11.1	-7.81	-10.2	-11.9	-2.17	-10.2	-10.6	-3.33	-9.87	-18.9	-20.8	-13.5	-71.4	-9.31	-17.2	-46.5	-27.8	-9.54	-155

Balance sheet

Quarterly · In mn (USD)

Total assets 192 mn Total liabilities 220 mn

Equity = assets − liabilities. Balance-sheet figures are period-end balances, not cumulative.

Show table：Balance sheet

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
Current assets	—	—	—	—	304	283	269	295	281	256	238	273	272	263	255	270	274	266	272	293	282	240	231	204	212	192	204	193	188	178	175	172	178	154	139	134	154	141	129	136	136	133	143	147	156	141	150	141	145	165	150	172	153	150	134	141	132	119	109	114	103	118	90.1	104	112	149
Total assets	—	—	—	—	431	415	394	415	395	365	346	378	371	358	348	360	362	351	354	374	359	315	305	278	230	209	221	230	225	213	211	203	203	177	154	155	173	172	158	165	166	165	173	186	195	178	198	188	202	222	210	232	214	210	195	199	188	173	163	168	155	169	138	149	157	192
Current liabilities	—	—	—	—	206	192	192	206	210	193	182	195	202	182	175	181	191	183	185	328	298	265	204	171	180	165	174	232	230	229	223	189	207	196	311	169	178	168	152	152	158	134	145	145	159	153	152	156	158	142	137	151	153	143	231	241	250	156	135	306	258	224	242	203	206	160
Total liabilities	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	361	354	363	356	376	359	356	351	373	375	361	361	365	360	370	380	307	291	314	310	328	290	289	309	301	305	289	301	309	314	317	363	320	284	298	334	356	220
Equity	-91.3	—	—	—	-61.1	-57.5	-49.1	-41.7	-46.7	-60.5	-67.7	-72.1	-81.6	-77.3	-80.8	-79.6	-87.4	-88.6	-86.2	-76.7	-60.4	-68.0	-78.5	-76.9	-127	-129	-123	-117	-116	-118	-124	-153	-173	-181	-202	-196	-200	-203	-203	-195	-199	-195	-196	-194	-112	-113	-116	-123	-127	-68.8	-79.3	-77.0	-86.9	-94.1	-94.4	-102	-121	-141	-153	-195	-164	-114	-160	-184	-199	-27.8

Cash flow

Quarterly · In mn (USD)

Operating 0.95 mn Investing -0.39 mn Financing 37.8 mn

Positive = cash in, negative = cash out.

Show table：Cash flow statement

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
Operating	100	-15.7	26.2	18.4	23.4	11.4	17.0	16.1	12.6	-1.11	-13.4	6.39	15.9	9.17	-0.94	7.31	19.9	6.27	2.28	2.57	-5.08	-13.6	11.2	-13.6	4.19	5.16	-2.58	7.89	-1.55	1.02	-1.32	3.53	-8.26	2.55	0.12	-13.0	-6.56	0.9	-10.6	4.69	3.79	-8.99	-10.3	-0.96	19.5	-6.87	-8.40	-11.4	-7.05	-18.4	0.41	-1.66	14.7	-10.7	0.5	-9.38	9.38	-1.90	-15.3	-3.15	-3.27	-16.9	-15.6	-4.95	-0.42	0.95
Investing	-8.54	-2.03	-5.49	-1.52	-1.07	-11.3	-15.4	-3.48	-3.06	-3.67	-4.82	-2.18	-0.25	-1.27	-2.61	-1.17	-1.61	-0.93	-1.00	-1.06	14.6	-0.9	-0.82	-1.22	-0.68	-0.54	-0.71	-20.5	-0.26	0.15	-1.02	-0.91	-0.52	-0.37	-0.92	2.48	-0.95	-0.44	-0.87	-1.01	-2.27	-0.48	-0.95	-5.87	-2.28	-1.15	-6.25	-4.38	-2.35	-5.04	-4.76	-2.85	-2.96	-2.30	-1.63	-1.10	-0.84	-1.62	-1.61	-1.10	-0.62	-1.19	-0.41	0.68	-0.78	-0.39
Financing	-62.4	0.14	-21.9	-21.9	-37.6	-2.26	-31.1	0.26	-17.5	-0.14	0.86	18.2	2.09	-0.14	0.62	0.15	0.66	0	-0.65	0.5	-48.5	0.19	-17.8	1.49	-2.57	-3.99	-1.69	5.73	-7.94	-5.48	3.12	-9.98	1.10	-2.87	-3.75	15.6	7.20	-0.41	6.39	-2.10	-2.67	26.3	0.54	5.89	-1.43	-0.46	13.2	-3.07	10.5	44.6	3.35	4.98	-11.8	12.4	1.20	9.30	-7.23	-4.80	16.3	7.89	-0.11	39.0	-6.24	2.78	3.60	37.8
Cash at period end	115	97.3	96.2	91.2	76.0	73.8	46.5	59.3	51.3	46.3	29.0	51.3	69.0	76.7	73.8	80.1	99.1	104	105	107	68.0	53.7	46.2	32.9	33.9	34.5	29.5	22.6	13.0	8.66	9.50	10.3	10.9	10.2	5.70	10.9	10.8	10.8	6.00	7.54	6.44	23.3	12.5	11.6	27.4	19.1	22.8	4.00	5.21	26.5	25.7	26.0	26.0	25.5	25.6	24.4	25.7	17.3	16.7	20.4	16.5	37.4	14.7	13.2	15.6	54.5

Profitability

Quarterly · %

Gross margin 39.3% Operating margin 6.2% Net margin -192.2%

Gross, operating and net margin = the respective profit ÷ revenue.

Show table：Profitability

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
Gross margin	41.1%	41.3%	42.6%	42.9%	41.5%	41.2%	43.4%	42.5%	40.7%	39.6%	40.2%	42.7%	41.2%	47.3%	42.9%	42.1%	40.6%	43.3%	45.8%	45.8%	42.1%	42.4%	39.6%	44.3%	45.6%	43.3%	41.2%	41.2%	43.1%	43.5%	40.9%	37.0%	37.4%	43.1%	39.5%	42.3%	41.3%	43.4%	41.1%	45.6%	40.9%	42.1%	45.1%	43.1%	42.1%	41.8%	41.2%	36.9%	38.0%	35.1%	28.1%	36.2%	32.6%	38.1%	43.3%	40.6%	38.2%	36.6%	41.5%	43.8%	38.0%	35.3%	37.5%	38.8%	35.7%	39.3%
Operating margin	4.3%	2.4%	5.4%	6.5%	0.2%	-1.1%	4.2%	4.0%	-4.4%	-0.2%	-6.8%	-3.5%	-9.2%	4.0%	-3.8%	-0.0%	-9.8%	-1.2%	2.9%	6.8%	1.7%	-7.4%	-8.2%	1.5%	-42.3%	-1.8%	4.0%	5.4%	0.9%	-2.1%	-4.5%	-8.3%	-14.6%	-4.0%	-3.8%	3.4%	-0.5%	2.6%	4.0%	11.3%	2.9%	-4.8%	4.1%	6.2%	2.5%	-0.1%	-1.0%	-7.6%	-5.9%	-7.3%	-11.3%	1.6%	-5.2%	-6.4%	-4.9%	-8.6%	-19.3%	-24.8%	-9.8%	-5.3%	-22.1%	-19.6%	-13.0%	-1.6%	-3.3%	6.2%
Net margin	2.4%	-1.6%	1.8%	3.3%	-1.0%	-3.4%	2.2%	2.3%	-6.9%	-12.4%	-8.3%	-5.1%	-10.4%	2.3%	-6.1%	-1.6%	-11.3%	-3.4%	0.9%	4.9%	8.7%	-9.7%	-9.6%	-0.2%	-43.7%	-3.3%	2.8%	3.8%	1.6%	-3.1%	-7.3%	-8.8%	-25.1%	-7.0%	-24.0%	-4.2%	-9.1%	-3.6%	-2.2%	4.6%	-4.3%	-14.7%	-5.3%	-2.7%	-18.9%	-4.7%	-9.9%	-11.6%	-8.2%	-10.5%	-12.1%	-1.9%	-9.3%	-11.5%	-4.4%	-13.7%	-26.5%	-29.2%	-19.2%	-98.5%	-15.6%	-26.8%	-74.1%	-37.3%	-12.2%	-192.2%

Returns & leverage

Quarterly · %

ROA -132.5% Debt ratio 114.5%

ROE / ROA = trailing four-quarter net income ÷ average equity / total assets (annual mode: the year’s net income ÷ average of opening and closing). Not computed when the denominator is zero or negative.

Show table：Returns & leverage

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
ROA	—	—	—	—	1.1%	0.5%	0.7%	0.1%	-2.1%	-5.4%	-10.0%	-12.3%	-13.7%	-8.7%	-7.8%	-5.8%	-5.8%	-8.2%	-5.7%	-2.9%	4.7%	3.1%	-0.7%	-2.9%	-25.4%	-25.9%	-20.0%	-18.6%	3.1%	3.4%	-2.1%	-9.2%	-21.4%	-25.4%	-34.6%	-32.0%	-22.8%	-22.4%	-12.7%	-6.7%	-3.1%	-7.2%	-8.7%	-12.4%	-19.6%	-16.8%	-18.0%	-22.5%	-16.3%	-19.2%	-20.1%	-15.3%	-16.6%	-16.1%	-13.0%	-15.7%	-21.3%	-27.6%	-35.3%	-67.9%	-67.1%	-65.1%	-96.0%	-63.5%	-64.7%	-132.5%
Debt ratio	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	—	160.2%	166.0%	172.0%	175.1%	185.6%	202.3%	230.8%	226.6%	215.6%	217.7%	228.3%	218.3%	219.6%	218.5%	213.3%	204.4%	157.6%	163.4%	158.4%	165.4%	162.8%	131.0%	137.8%	133.2%	140.7%	144.7%	148.5%	151.2%	164.8%	181.6%	194.0%	216.1%	205.8%	167.6%	216.6%	223.4%	226.8%	114.5%

EPS

Quarterly · US$

EPS US$-7.06

Show table：EPS

Item	2010Q4	2011Q1	2011Q2	2011Q3	2011Q4	2012Q1	2012Q2	2012Q3	2012Q4	2013Q1	2013Q2	2013Q3	2013Q4	2014Q1	2014Q2	2014Q3	2014Q4	2015Q1	2015Q2	2015Q3	2015Q4	2016Q1	2016Q2	2016Q3	2016Q4	2017Q1	2017Q2	2017Q3	2017Q4	2018Q1	2018Q2	2018Q3	2018Q4	2019Q1	2019Q2	2019Q3	2019Q4	2020Q1	2020Q2	2020Q3	2020Q4	2021Q1	2021Q2	2021Q3	2021Q4	2022Q1	2022Q2	2022Q3	2022Q4	2023Q1	2023Q2	2023Q3	2023Q4	2024Q1	2024Q2	2024Q3	2024Q4	2025Q1	2025Q2	2025Q3	2025Q4	2026Q1	2026Q2	2026Q3	2026Q4	2027Q1
EPS（US$）	0.02	—	221999.00	—	-224266.98	—	238459.00	—	-230579.04	-0.07	-0.05	-0.04	-0.06	0.01	-0.03	-0.01	-0.06	-0.02	0.00	0.03	0.04	—	—	0.00	-0.19	—	—	—	0.11	-0.12	-0.15	-0.29	-0.68	-0.21	-0.61	-0.12	-0.26	—	—	0.10	-0.10	-0.27	-0.11	-0.07	-0.38	-0.07	-0.16	-0.19	-0.13	-0.13	-0.10	-0.02	-0.11	-0.11	-0.04	-0.10	-0.19	-0.22	-2.82	-14.56	-0.45	-1.87	-3.49	-2.03	-0.39	-7.06

Revenue & profit

Year-to-date · In mn (USD)

Revenue 80.8 mn Net income -155 mn

Year-to-date = summed from the first quarter of the fiscal year; balance-sheet items are period-end balances.

Balance sheet

Year-to-date · In mn (USD)

Total assets 192 mn Total liabilities 220 mn

Equity = assets − liabilities. Balance-sheet figures are period-end balances, not cumulative.

Cash flow

Year-to-date · In mn (USD)

Operating 0.95 mn Investing -0.39 mn Financing 37.8 mn

Positive = cash in, negative = cash out.

Profitability

Year-to-date · %

Gross margin 39.3% Operating margin 6.2% Net margin -192.2%

Gross, operating and net margin = the respective profit ÷ revenue.

Returns & leverage

Year-to-date · %

ROA -132.5% Debt ratio 114.5%

EPS

Year-to-date · US$

EPS US$-7.06

Revenue & profit

Annual · In mn (USD)

Revenue 280 mn Net income -101 mn

Annual = sum of four quarters of a complete fiscal year (incomplete years are omitted); balance-sheet items are year-end balances.

Show table：Income statement

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
Revenue	672	652	588	553	553	476	505	435	403	403	350	373	417	311	274	280
Gross profit	283	274	241	240	245	205	213	173	168	173	151	147	138	124	110	103
Operating income	24.7	5.19	-28.9	-11.8	14.4	-66.6	11.6	-30.7	-4.75	21.2	8.40	-13.8	-22.1	-29.6	-41.7	-24.5
Net income	4.54	-8.81	-52.4	-21.4	16.8	-74.7	6.95	-45.7	-42.8	-5.21	-35.5	-32.3	-34.5	-42.7	-115	-101

Balance sheet

Annual · In mn (USD)

Total assets 157 mn Total liabilities 356 mn

Equity = assets − liabilities. Balance-sheet figures are period-end balances, not cumulative.

Show table：Balance sheet

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
Current assets	304	281	272	274	282	212	188	178	154	136	156	145	153	132	103	112
Total assets	431	395	371	362	359	230	225	203	173	166	195	202	214	188	155	157
Current liabilities	206	210	202	191	298	180	230	207	178	158	159	158	153	250	258	206
Total liabilities	—	—	—	—	—	—	361	376	373	365	307	328	301	309	320	356
Equity	-61.1	-46.7	-81.6	-87.4	-60.4	-127	-116	-173	-200	-199	-112	-127	-86.9	-121	-164	-199

Cash flow

Annual · In mn (USD)

Operating -37.9 mn Investing -1.71 mn Financing 39.2 mn

Positive = cash in, negative = cash out.

Show table：Cash flow statement

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
Operating	52.3	57.0	7.74	35.5	6.03	-11.7	8.91	-5.03	-16.9	-1.18	-0.77	-33.7	-4.89	-10.2	-23.6	-37.9
Investing	-10.1	-33.2	-10.9	-6.65	11.6	-3.62	-22.0	-2.30	0.24	-4.60	-9.59	-14.1	-15.6	-5.87	-4.95	-1.71
Financing	-81.3	-50.6	21.0	1.29	-48.6	-18.7	-7.89	-11.2	16.2	1.21	31.3	20.2	41.2	15.7	19.3	39.2
Cash at period end	76.0	51.3	69.0	99.1	68.0	33.9	13.0	10.9	10.8	6.44	27.4	5.21	26.0	25.7	16.5	15.6

Profitability

Annual · %

Gross margin 36.9% Operating margin -8.8% Net margin -36.1%

Gross, operating and net margin = the respective profit ÷ revenue.

Show table：Profitability

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
Gross margin	42.1%	42.0%	41.0%	43.3%	44.2%	43.0%	42.1%	39.8%	41.6%	42.8%	43.1%	39.4%	33.1%	39.9%	40.1%	36.9%
Operating margin	3.7%	0.8%	-4.9%	-2.1%	2.6%	-14.0%	2.3%	-7.0%	-1.2%	5.3%	2.4%	-3.7%	-5.3%	-9.5%	-15.2%	-8.8%
Net margin	0.7%	-1.4%	-8.9%	-3.9%	3.0%	-15.7%	1.4%	-10.5%	-10.6%	-1.3%	-10.1%	-8.7%	-8.3%	-13.7%	-42.0%	-36.1%

Returns & leverage

Annual · %

ROA -64.7% Debt ratio 226.8%

Show table：Returns & leverage

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
ROA	1.1%	-2.1%	-13.7%	-5.8%	4.7%	-25.4%	3.1%	-21.4%	-22.8%	-3.1%	-19.6%	-16.3%	-16.6%	-21.3%	-67.1%	-64.7%
Debt ratio	—	—	—	—	—	—	160.2%	185.6%	215.6%	219.6%	157.6%	162.8%	140.7%	164.8%	205.8%	226.8%

EPS

Annual · US$

EPS US$-7.78

Show table：EPS

Item	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
EPS（US$）	—	—	-0.22	-0.09	0.05	—	—	-1.24	-1.20	—	-0.83	-0.55	-0.36	-0.44	-18.05	-7.78

Source: SEC EDGAR (XBRL company facts)

Annual reports by year

	10-K
2026	Open full text →
2025	Open full text →
2024	Open full text →
2023	Open full text →

10-K: annual report of a US domestic issuer. Filings are the original documents hosted on SEC EDGAR — this site neither mirrors nor edits them.

FAQ

Where can I read QUANTUM CORP /DE/ (QMCO) annual reports?

Every year in the table above links straight to the full text on SEC EDGAR. US annual reports are web pages (HTML) rather than PDFs, so you can read and search them in the browser without downloading anything. 4 filings are currently indexed.

What is the difference between a 10-K and a 20-F?

A 10-K is the annual report of a US domestic issuer, with sections fixed by law: Item 1 Business, Item 1A Risk Factors, Item 7 Management's Discussion and Analysis. A 20-F is filed by foreign private issuers — Taiwanese companies with US ADRs, such as TSMC, file 20-F rather than 10-K. A 40-F applies to Canadian issuers under the MJDS.

Are earnings call materials available here?

No. Earnings calls are not SEC filings, so US pages on this site cover annual reports only. Taiwan has a mandatory investor-conference disclosure regime, and those materials are indexed under Annual Reports.

Source: US Securities and Exchange Commission (SEC) EDGAR. This site indexes public filings and links to them; it hosts no copies, offers no investment advice, and makes no warranty as to timeliness or completeness.
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