QMCO Insider Trading

Insider Trading Chart
Insider Trading History
Frequently Asked Questions
About

Insider Ownership Percentage: 0.91%

Insider Buying (Last 12 Months): $0.00

Insider Selling (Last 12 Months): $10,187,215.03

Quantum Insider Trading History Chart

Quantum Share Price & Price History

^$8.74

▲ +0.48 (5.81%)

As of 12/4/2025 05:00 PM ET

Days: 30 | 90 | 365

Quantum Insider Trading History

Transaction Date	Insider Name	Title	Buy/Sell	Number of Shares	Average Share Price	Total Transaction	Shares Held After Transaction
10/2/2025	Laura A Nash	CAO	Sell	611	$10.86	$6,635.46	11,139
10/1/2025	Laura A Nash	CAO	Sell	118	$9.91	$1,169.38	11,750
9/12/2025	Laura A Nash	CAO	Sell	284	$7.40	$2,101.60	11,368
4/21/2025	Brian E Cabrera	SVP	Sell	1,078	$9.65	$10,402.70	28,736
4/21/2025	James J Lerner	CEO	Sell	2,784	$9.65	$26,865.60	110,848
4/21/2025	Lewis W Moorehead	CAO	Sell	179	$9.65	$1,727.35	24,971
4/15/2025	Pacific Investment Management	Major Shareholder	Sell	962,127	$10.25	$9,861,801.75
4/2/2025	Laura A Nash	CAO	Sell	136	$12.85	$1,747.60	11,652
2/3/2025	Kenneth P Gianella	CFO	Sell	1,279	$21.53	$27,536.87	32,402
1/16/2025	Brian E Cabrera	SVP	Sell	1,996	$35.68	$71,217.28	27,940
1/16/2025	Henk Jan Spanjaard	CRO	Sell	935	$35.68	$33,360.80	14,903
1/16/2025	James J Lerner	CEO	Sell	2,511	$35.68	$89,592.48	107,804
1/16/2025	Kenneth P Gianella	CFO	Sell	1,487	$35.68	$53,056.16	33,681
11/8/2024	Brian E Cabrera	SVP	Sell	5,387	$4.43	$23,864.41	26,958
11/8/2024	Henk Jan Spanjaard	CRO	Sell	394	$4.43	$1,745.42	15,662
11/8/2024	James J Lerner	CEO	Sell	6,505	$4.43	$28,817.15	107,491
11/8/2024	Kenneth P Gianella	CFO	Sell	2,590	$4.43	$11,473.70	33,910
11/8/2024	Laura A Nash	CAO	Sell	685	$4.43	$3,034.55	11,431
11/2/2023	Brian E Cabrera	SVP	Sell	277	$9.40	$2,603.80	11,094
10/10/2023	James J Lerner	CEO	Sell	1,802	$12.00	$21,624.00	85,245
10/4/2023	Brian E Cabrera	SVP	Sell	47	$11.80	$554.60	11,371
10/4/2023	Laura A Nash	CAO	Sell	44	$11.80	$519.20	3,365
9/5/2023	John Hurley	CRO	Sell	2,133	$12.40	$26,449.20	17,075
7/10/2023	Brian E Cabrera	SVP	Sell	783	$21.40	$16,756.20	11,418
7/10/2023	James J Lerner	CEO	Sell	7,944	$21.40	$170,001.60	87,047
7/10/2023	John Hurley	CRO	Sell	1,134	$21.40	$24,267.60	19,209
7/10/2023	Laura A Nash	CAO	Sell	180	$21.40	$3,852.00	3,409
5/2/2023	Brian E Cabrera	SVP	Sell	1,545	$19.00	$29,355.00	12,202

SEC Filings (Institutional Ownership Changes) for Quantum (NASDAQ:QMCO)

63.66% of Quantum stock is owned by institutions. Institutional ownership can be a sign of analyst confidence in the fundamentals of the stock.

Institutional Buying and Selling by Quarter

Quantum Institutional Trading History

Reporting Date	Hedge Fund	Shares Held	Market Value	% of Portfolio	Quarterly Change in Shares	Ownership in Company
11/17/2025	Bank of America Corp DE	2,896	$29K	0.0%	+337.5%	0.022%
11/13/2025	UBS Group AG	162,605	$1.61M	0.0%	+170.0%	1.214%
11/13/2025	BNP Paribas Financial Markets	3,461	$34K	0.0%	+322.1%	0.026%
11/12/2025	Riverview Capital Advisers LLC	10,000	$99K	0.0%	N/A	0.075%
11/7/2025	Vanguard Group Inc.	303,597	$3.01M	0.0%	+18.3%	2.266%
11/5/2025	Flagship Harbor Advisors LLC	22,710	$0.23M	0.0%	N/A	0.171%
11/3/2025	AlphaQuest LLC	35,536	$0.35M	0.0%	+655.0%	0.267%
11/3/2025	Hollencrest Capital Management	6,560	$65K	0.0%	+228.0%	0.049%
8/14/2025	Raymond James Financial Inc.	4,615	$46K	0.0%	N/A	0.066%
8/13/2025	Sassicaia Capital Advisers LLC	23,267	$0.23M	0.1%	N/A	0.335%
8/13/2025	Marshall Wace LLP	178,021	$1.78M	0.0%	N/A	2.561%
8/8/2025	Geode Capital Management LLC	69,384	$0.69M	0.0%	+9.1%	0.998%
8/8/2025	SBI Securities Co. Ltd.	5,636	$56K	0.0%	+99.4%	0.081%
7/31/2025	AlphaQuest LLC	4,707	$47K	0.0%	-51.2%	0.068%
7/25/2025	Apollon Wealth Management LLC	10,714	$0.11M	0.0%	N/A	0.154%
5/15/2025	Activest Wealth Management	4,283	$62K	0.0%	+428,200.0%	0.062%
5/14/2025	AlphaQuest LLC	9,653	$0.14M	0.0%	N/A	0.139%
5/12/2025	Virtu Financial LLC	19,721	$0.28M	0.0%	N/A	0.284%
5/5/2025	Allianz Asset Management GmbH	962,127	$13.84M	0.0%	+87.8%	13.844%
2/17/2025	Squarepoint Ops LLC	9,375	$0.51M	0.0%	N/A	0.163%
2/17/2025	Bridgeway Capital Management LLC	8,240	$0.44M	0.0%	N/A	0.143%
2/17/2025	Bank of America Corp DE	75,305	$4.06M	0.0%	+125,408.3%	1.307%
2/14/2025	Itau Unibanco Holding S.A.	56,000	$3.02M	0.1%	N/A	0.972%
2/14/2025	Jane Street Group LLC	33,612	$1.81M	0.0%	N/A	0.584%
2/14/2025	Schonfeld Strategic Advisors LLC	6,400	$0.35M	0.0%	N/A	0.111%
2/14/2025	Northern Trust Corp	10,407	$0.56M	0.0%	-7.0%	0.181%
2/14/2025	Price T Rowe Associates Inc. MD	5,030	$0.27M	0.0%	N/A	0.087%
2/13/2025	Marshall Wace LLP	6,188	$0.33M	0.0%	N/A	0.107%
2/12/2025	Diametric Capital LP	12,423	$0.67M	0.5%	N/A	0.213%
2/12/2025	CIBC Private Wealth Group LLC	11,000	$0.59M	0.0%	N/A	0.191%
2/11/2025	LPL Financial LLC	7,354	$0.40M	0.0%	N/A	0.128%
2/6/2025	SBI Securities Co. Ltd.	3,598	$0.19M	0.0%	N/A	0.062%
1/29/2025	UNICOM Systems Inc.	75,237	$4.06M	1.0%	N/A	1.551%
1/21/2025	Flagship Harbor Advisors LLC	4,194	$0.23M	0.0%	N/A	0.086%
1/15/2025	Arkadios Wealth Advisors	8,642	$0.47M	0.0%	N/A	0.178%
11/19/2024	TCW Group Inc.	106,010	$0.37M	0.0%	-95.0%	2.186%
11/15/2024	State Street Corp	17,114	$60K	0.0%	-95.0%	0.357%
10/8/2024	Advance Capital Management Inc.	17,310	$61K	0.0%	-82.4%	0.018%
8/16/2024	Pacific Ridge Capital Partners LLC	1,264,992	$0.52M	0.1%	-3.9%	1.320%
5/17/2024	Tidal Investments LLC	44,165	$26K	0.0%	N/A	0.046%
5/15/2024	Price T Rowe Associates Inc. MD	100,600	$60K	0.0%	-42.6%	0.106%
5/14/2024	B. Riley Financial Inc.	695,958	$0.42M	0.4%	-65.1%	0.732%
5/10/2024	Acadian Asset Management LLC	58,580	$34K	0.0%	-71.4%	0.062%
5/9/2024	Pacific Ridge Capital Partners LLC	1,316,467	$0.78M	0.2%	-1.7%	1.385%
4/19/2024	Kovack Advisors Inc.	263,901	$0.16M	0.0%	+33.5%	0.278%
2/14/2024	Neuberger Berman Group LLC	14,819,147	$5.17M	0.0%	-3.3%	15.593%
2/12/2024	Pacific Ridge Capital Partners LLC	1,338,647	$0.47M	0.1%	-4.5%	1.409%
2/9/2024	Neuberger Berman Group LLC	14,819,147	$5.17M	0.0%	-3.3%	15.593%
2/9/2024	King Luther Capital Management Corp	980,000	$0.34M	0.0%	-29.2%	1.031%
11/13/2023	Connor Clark & Lunn Investment Management Ltd.	64,066	$39K	0.0%	+151.5%	0.067%
11/13/2023	B. Riley Financial Inc.	1,995,303	$1.22M	0.4%	-18.1%	2.099%
11/13/2023	Pacific Ridge Capital Partners LLC	1,402,456	$0.86M	0.2%	-2.5%	1.476%
8/8/2023	B. Riley Financial Inc.	2,436,303	$2.63M	0.7%	-19.6%	2.580%
8/7/2023	Acadian Asset Management LLC	401,362	$0.43M	0.0%	+8.8%	0.425%
7/21/2023	Kovack Advisors Inc.	515,477	$0.56M	0.1%	+2.2%	0.550%
5/17/2023	Long Focus Capital Management LLC	5,250,364	$6.04M	0.3%	+2.8%	4.990%
5/16/2023	Solas Capital Management LLC	3,728,108	$4.29M	2.3%	-26.7%	3.543%
5/15/2023	Roumell Asset Management LLC	1,687,553	$1.94M	4.4%	-5.2%	1.604%
5/12/2023	Long Focus Capital Management LLC	3,364,033	$3.87M	0.4%	-34.1%	3.197%
5/11/2023	King Luther Capital Management Corp	1,384,915	$1.59M	0.0%	+1.5%	1.316%
5/11/2023	Acadian Asset Management LLC	368,850	$0.42M	0.0%	+35.1%	0.351%
5/9/2023	B. Riley Financial Inc.	3,030,746	$3.49M	0.9%	-20.8%	2.881%
5/4/2023	Herald Investment Management Ltd	1,000,000	$1.13M	0.3%	+33.9%	0.950%
4/21/2023	Kovack Advisors Inc.	504,477	$0.58M	0.1%	+43.3%	0.479%
3/1/2023	B. Riley Financial Inc.	3,824,811	$4.17M	0.9%	-4.5%	3.635%
2/22/2023	Kovack Advisors Inc.	352,001	$0.38M	0.1%	+49.2%	0.335%
2/14/2023	AWM Investment Company Inc.	657,280	$0.72M	0.1%	-20.9%	0.625%
2/14/2023	Marathon Capital Management	60,000	$65K	0.0%	-81.4%	0.057%
2/14/2023	Pacific Ridge Capital Partners LLC	1,370,413	$1.49M	0.4%	-1.9%	1.303%
2/13/2023	Neuberger Berman Group LLC	15,287,580	$16.66M	0.0%	-3.0%	14.531%
2/10/2023	Senvest Management LLC	2,550,931	$2.78M	0.1%	-54.8%	2.425%
2/8/2023	Russell Investments Group Ltd.	25,476	$28K	0.0%	-83.2%	0.024%
2/7/2023	B. Riley Financial Inc.	3,824,811	$4.17M	0.9%	-4.5%	3.635%
11/15/2022	Union Square Park Capital Management LLC	115,275	$0.12M	0.1%	-71.2%	0.111%
11/15/2022	Long Focus Capital Management LLC	4,912,602	$5.31M	0.5%	+19.6%	4.731%
11/15/2022	Marathon Capital Management	323,422	$0.35M	0.1%	-3.2%	0.311%
11/14/2022	Ergoteles LLC	177,559	$0.19M	0.0%	-33.9%	0.171%
11/14/2022	Kovack Advisors Inc.	235,923	$0.26M	0.0%	+8.0%	0.227%
11/10/2022	King Luther Capital Management Corp	1,364,915	$1.47M	0.0%	+36.5%	1.314%
11/10/2022	Senvest Management LLC	5,646,026	$6.10M	0.3%	+27.1%	5.437%
11/10/2022	Pacific Ridge Capital Partners LLC	1,396,711	$1.51M	0.4%	-2.9%	1.345%
11/9/2022	B. Riley Financial Inc.	4,005,440	$4.33M	0.8%	-32.4%	3.857%
11/7/2022	Virtu Financial LLC	25,660	$28K	0.0%	N/A	0.025%
11/4/2022	Russell Investments Group Ltd.	151,886	$0.16M	0.0%	+138.8%	0.148%
8/16/2022	B. Riley Asset Management LLC	772,519	$1.10M	0.5%	+36.4%	0.752%
8/15/2022	Laurion Capital Management LP	24,051	$34K	0.0%	N/A	0.023%
8/12/2022	AWM Investment Company Inc.	830,994	$1.18M	0.2%	+128.7%	0.809%
8/11/2022	King Luther Capital Management Corp	1,000,000	$1.42M	0.0%	+50.4%	0.974%
8/10/2022	Pacific Ridge Capital Partners LLC	1,438,739	$2.04M	0.5%	-8.8%	1.413%
8/10/2022	B. Riley Financial Inc.	5,921,459	$8.41M	1.9%	+25.6%	5.816%
8/8/2022	Walleye Capital LLC	95,200	$0.14M	0.0%	-76.3%	0.094%
8/8/2022	Y Intercept Hong Kong Ltd	27,131	$39K	0.0%	N/A	0.027%
8/4/2022	Herald Investment Management Ltd	746,850	$1.07M	0.2%	+42.3%	0.734%
7/29/2022	Russell Investments Group Ltd.	63,600	$89K	0.0%	-95.1%	0.062%
7/19/2022	Eidelman Virant Capital	45,000	$74K	0.1%	-55.0%	0.044%
5/27/2022	Walleye Capital LLC	401,946	$0.91M	0.0%	N/A	0.669%
5/16/2022	B. Riley Asset Management LLC	566,431	$1.29M	0.6%	-66.8%	0.942%
5/16/2022	RBF Capital LLC	30,000	$68K	0.0%	-50.0%	0.050%
5/11/2022	King Luther Capital Management Corp	665,000	$1.51M	0.0%	+43.3%	1.106%
5/11/2022	Pacific Ridge Capital Partners LLC	1,577,393	$3.58M	0.7%	+25.6%	2.624%

Data available starting January 2016

Quantum Corporation provides products for storing and managing digital video and unstructured data in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company offers Myriad All-Flash File and Object Storage Software for high performance enterprise unstructured data applications such as AI, machine learning, and data analytics; Unified Surveillance Platform Software that unified compute and storage for video surveillance recording, storage, and analytics; StorNext Hybrid Flash/Disk File Storage Software for video editing, post-production, and streaming applications, as well as digital file archives; and CatDV Asset Management Software for indexing, cataloging, enriching video, audio, and image files, and workflow orchestration. It also provides ActiveScale Object Storage Software that scalable and durable storage for long term data preservation and protection; DXi Backup Appliances to build backup appliances for high-speed backup and recovery and multisite data protection; and Scalar Tape Storage that secure storage for long term data archiving and offline data protection which are used by hyperscalers and enterprises. In addition, the company sells linear tape-open (LTO) a tape drives for small business data protection and archiving; and LTO media for use in tape storage systems. Further, it offers global support, managed services, customer support agreements, software subscriptions, installation, education, and consulting and training services, as well as Quantum-as-a-Service. The company sells its products through a network of distributors, value-added resellers, direct marketing resellers, original equipment manufacturers, and other suppliers, as well as directly to corporate entities and government agencies. It has a partnership with Tiger Surveillance to deliver end-to-end solutions for long-term retention and archiving of video surveillance data. Quantum Corporation was founded in 1980 and is headquartered in San Jose, California.

Today's Range

Now: $8.74

$8.06

$8.76

50 Day Range

MA: $9.38

$6.95

$13.35

52 Week Range

Now: $8.74

$6.51

$90.64

Volume

617,346 shs

Average Volume

624,763 shs

Market Capitalization

$119.91 million

P/E Ratio

N/A

Dividend Yield

N/A

Beta

2.59

Who are the company insiders with the largest holdings of Quantum?: Quantum's top insider shareholders include:
Pacific Investment Management (Major Shareholder)
James J Lerner (CEO)
Kenneth P Gianella (CFO)
Brian E Cabrera (SVP)
Lewis W Moorehead (CAO)
Henk Jan Spanjaard (CRO)
Laura A Nash (CAO)
Learn More about top insider investors at Quantum.
Who are the major institutional investors of Quantum?: Quantum's top institutional investors include:
Vanguard Group Inc. — 2.27%
UBS Group AG — 1.21%
AlphaQuest LLC — 0.27%
Flagship Harbor Advisors LLC — 0.17%
Riverview Capital Advisers LLC — 0.07%
Hollencrest Capital Management — 0.05%
Learn More about top institutional investors of Quantum stock.
Which major investors are buying Quantum stock?: Within the last quarter, QMCO stock was acquired by institutional investors including:
UBS Group AG
Vanguard Group Inc.
AlphaQuest LLC
Flagship Harbor Advisors LLC
Riverview Capital Advisers LLC
Hollencrest Capital Management
BNP Paribas Financial Markets
Bank of America Corp DE