NASDAQ: QMCO
Quantum Corp Stock Ownership - Who owns Quantum?

Insider buying vs selling

Have Quantum Corp insiders been buying or selling?

Buy
Sell
NameRoleDateSharesPriceValue
Anthony CraythorneCRO2026-08-031,478$10.73
$15.86kSell
Laura A. NashChief Accounting Officer2026-07-02260$10.51
$2.73kSell
Hugues MeyrathPresident CEO2026-07-026,232$10.51
$65.50kSell
John FichthornDirector2026-06-0411,020,645$5.19
$57.24MBuy
John FichthornDirector2026-06-043,083,975$5.19
$16.02MBuy
Dialectic Technology Spv LLC10% Owner2026-06-0411,020,645$5.19
$57.24MBuy
Dialectic Technology Spv LLC10% Owner2026-06-043,083,975$5.19
$16.02MBuy
Laura A. NashChief Accounting Officer2026-04-02109$5.44
$592.96Sell

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Net Insider Buy/Sell (L12M) Ownership

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QMCO Shareholders

What type of owners hold Quantum Corp stock?

Institutional
Insider
Retail
NameHoldSharesValueType
John Fichthorn71.73%28,270,136$587.17MInsider
B Riley Financial Inc59.92%23,613,778$490.46MInsider
Dialectic Technology Spv LLC35.79%14,104,620$292.95MInsider
Jeffrey C. Smith19.57%7,711,659$160.17MInsider
Starboard Value LP19.08%7,518,996$156.17MInsider
Eric Singer17.99%7,089,609$147.25MInsider
Gregg J. Powers2.36%931,892$19.36MInsider
Linda M. Breard2.33%916,761$19.04MInsider
J. Michael Dodson2.21%870,372$18.08MInsider
Theodore A. Stinson1.81%714,743$14.85MInsider

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QMCO vs Computer Hardware Stocks

TickerInst. %Insider %Net Insider (L12M)Net Insider (L3M)
QMCO0.01%99.99%Net BuyingNet Selling
RCAT0.05%13.57%Net SellingNet Selling
SSYS0.05%15.24%
DDD0.07%12.97%Net SellingNet Selling
PSQL0.01%6.83%

Quantum Stock Ownership FAQ

Who owns Quantum?

Quantum (NASDAQ: QMCO) is owned by 0.04% institutional shareholders, 256.44% Quantum insiders, and 0.00% retail investors. John Fichthorn is the largest individual Quantum shareholder, owning 28.27M shares representing 71.73% of the company. John Fichthorn's Quantum shares are currently valued at $516.50M.

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