Quantum Corp DEFA14A, filed Dec 2, 2025
Quantum Corp /De/ (QMCO)
DEFA14A
2025-12-02
View Original
Added on
October 17, 2026
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
SCHEDULE 14A
Proxy Statement Pursuant to Section 14(a) of the Securities
Exchange Act of 1934 (Amendment No.)
Filed by the Registrant ☒ Filed by a party other than the Registrant ☐
Check the appropriate box:
☐ Preliminary Proxy Statement
☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
☐ Definitive Proxy Statement
☒ Definitive Additional Materials
☐ Soliciting Material Pursuant to Section 240.14a-12
Quantum Corporation
(Name of Registrant as Specified in its Charter)
____________________________________________________________________________
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)
Payment of Filing Fee (Check all boxes that apply):
☒ No fee required.
☐ Fee paid previously with preliminary materials.
☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11.
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[Social media posts first used on or after December 2, 2025]
Voting your Quantum shares is quick and easy.
Please submit your vote before the Dec 15 deadline (11:59 PM ET) ahead of the Dec 16 Annual Meeting.
Vote now: [link to 2025 Annual Meeting landing page]
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Don’t forget to vote!
Quantum’s voting cut-off is Dec 15 at 11:59 PM ET ahead of the Dec 16 Annual Meeting.
[link to 2025 Annual Meeting landing page]
#QuantumCorp #ShareholderVote #QMCO
A reminder for Quantum shareholders:
Please submit your vote ahead of the Dec 15, 11:59 PM ET cut-off.
Please submit your vote ahead of the Dec 15, 11:59 PM ET cut-off.
The Annual Meeting will be held Dec 16.
Vote now: [link to 2025 Annual Meeting landing page]
#QuantumCorp #ShareholderVote #QMCO
#QuantumCorp #ShareholderVote #QMCO
Quantum shareholders: please vote your shares by 11:59 PM ET on Dec 15 in advance of the Dec 16 Annual Meeting.
Vote here → [link to 2025 Annual Meeting landing page]
#QuantumCorp #ShareholderVote #QMCO
Quantum shareholders are reminded to vote their shares ahead of the Dec 15 at 11:59 PM ET voting deadline.
The Annual Meeting will be held on Dec 16.
Vote here: [link to 2025 Annual Meeting landing page]
#QuantumCorp #ShareholderVote #QMCO
#QuantumCorp #ShareholderVote #QMCO
A reminder to Quantum shareholders: Please submit your vote before the Dec 15 (11:59 PM ET) cut-off to participate in the Dec 16 Annual Meeting.
Vote here: [link to 2025 Annual Meeting landing page]
#QuantumCorp #ShareholderVote #QMCO