QMCO
insider transactionsQUANTUM CORP /DE/ — buys & sells by directors, officers and 10% owners A shareholder owning more than 10% of the company. Must report trades, but usually a weaker signal than an officer or director. (SEC Form 4).
No open-market buys or sells this period. The trades below are grants, option exercises and gifts, which carry no market price.
Net buy / sell volume
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Tap or hover the chart for daily net volume. Green = net buying, red = net selling.
All transactions
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Exercise·C
Director, 10% Owner
—
57.2M sh
Own New
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Grant·A
Director, 10% Owner
$16.0M
3.1M sh · $5.19
Own +28%
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Exercise·C
Director, 10% Owner
$57.2M
11.0M sh · $5.19
Own New
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Exercise·C
10% Owner
—
— sh
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Grant·A
10% Owner
$16.0M
3.1M sh · $5.19
Own +28%
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Exercise·C
10% Owner
$57.2M
11.0M sh · $5.19
Own New
-
Other·J
Director, 10% Owner
—
105.9K sh
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Other·J
10% Owner
—
105.9K sh
| Date▾ | Insider | Type | Shares | Value |
|---|---|---|---|---|
| Jun 4, 2026 | John Fichthorn | Exercise C | 57.2M | — |
| Jun 4, 2026 | John Fichthorn | Grant A | 3.1M | $16.0M |
| Jun 4, 2026 | John Fichthorn | Exercise C | 11.0M | $57.2M |
| Jun 4, 2026 | Dialectic Technology SPV LLC | Exercise C | — | — |
| Jun 4, 2026 | Dialectic Technology SPV LLC | Grant A | 3.1M | $16.0M |
| Jun 4, 2026 | Dialectic Technology SPV LLC | Exercise C | 11.0M | $57.2M |
| Jun 1, 2026 | John Fichthorn | Other J | 105.9K | — |
| Jun 1, 2026 | Dialectic Technology SPV LLC | Other J | 105.9K | — |
About QMCO insider trading
This page tracks insider transactions for QUANTUM CORP /DE/ (QMCO) reported to the U.S. Securities and Exchange Commission on Form 4. Corporate insiders — directors, executive officers and beneficial owners of more than 10% of the stock — must disclose their trades within two business days. Open-market purchases (code P) and sales (code S) made at the insider's discretion are the most-watched opportunistic signals, while awards (A), option exercises (M) and tax-withholding (F) reflect compensation rather than conviction. Trades marked 10b5-1 were made under a pre-arranged plan and are considered routine. A cluster buy — several insiders buying within a short window — is historically a stronger bullish indicator than any single trade.