Beneficial Ownership Report · SCHEDULE 13G
Quantum Corporation
QMCONASDAQEQUITYCurrent
Beneficial Ownership Report
Structured filing — SCHEDULE 13G
primary_doc.xml
Subject company
- Company
- QUANTUM CORP
- Company CIK
- 0000709283
- Street
- 10770 E. Briarwood Avenue
- City
- Centennial
- State / country code
- CO
- Postal code
- 80112
Statement details
- Security class
- COMMON-STOCK
- Event date
- 09/30/2026
- Rule designation
- Rule 13d-1(b)
Reporting person 1
- Name
- Barclays PLC
- Citizenship / organization
- X0
- Reporting person type
- HC
- Aggregate amount owned
- 2,209,657
- Percent of class
- 5.60
- Sole voting power
- 2,139,866
- Shared voting power
- 69,791
- Sole dispositive power
- 2,139,866
- Shared dispositive power
- 69,791
Item 1
Issuer
QUANTUM CORP
Principal executive office address
10770 E. Briarwood Avenue, CO, 80112
Item 2
Citizenship
X0
Filing person
Barclays PLC
Principal business or residence address
1 Churchill Place, London - E14 5HP
Item 3
Not applicable indication
N
Type of filing person
HC
Item 4
Percent of class
5.60
Amount beneficially owned
2209657
Sole voting power
2139866
Shared voting power
69791
Sole dispositive power
2139866
Shared dispositive power
69791
Item 5
Not applicable indication
Y
Ownership of 5% or less
N
Item 6
Not applicable indication
Y
Item 7
Not applicable indication
N
Subsidiaries
Barclays Bank PLC, Barclays Capital Inc, Barclays Capital Securities Ltd
Item 8
Not applicable indication
Y
Item 9
Not applicable indication
Y
Item 10
Not applicable indication
N
Certifications
By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were acquired and are held in the ordinary course of business and were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having that purpose or effect, other than activities solely in connection with a nomination under § 240.14a-11
Signature 1
- Reporting person
- Barclays PLC
- Signed
- Ramya Rao
- Title
- Director
- Date
- 11/06/2026
Company context
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.
Current securities
Recent company filings
- 10-Q filingNov 9, 2026
- Results of Operations and Financial ConditionNov 9, 2026
- Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Other EventsOct 9, 2026
- Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements · Other EventsSep 28, 2026
- S-8 filingSep 25, 2026