QUANTUM CORP /DE/ Insider Trading Activity
Every SEC Form 4 insider transaction reported for QUANTUM CORP /DE/ (QMCO), sourced directly from SEC EDGAR and updated as new filings are accepted.
By Trabud · Insider-trading data from SEC EDGAR
Latest filing:
Compiled automatically from SEC EDGAR Form 4 filings and refreshed daily. Figures count purchases (code P) and sales (code S) only — not grants, option exercises, or gifts. How this page is built. Not investment advice.
Quick Answer
Are QMCO insiders buying or selling?
In the last 12 months, QUANTUM CORP /DE/ insiders reported 0 open-market purchases ($0) and 4 sales ($84.7K) — net selling of $84.7K. Since March 2018, Trabud has recorded 109 Form 4 filings for QMCO: 24 buys ($13.2M) and 85 sells ($50.1M).
Source: SEC EDGAR Form 4
Key Statistics (March 2018 – Aug 5, 2026)
Total Form 4 filings
109
SEC EDGAR
Insider filers
21
Insider buys (24)
$13.2M
Insider sells (85)
$50.1M
Insider sentiment
Net sellingNet insider flow of $36.9M in net selling since March 2018, and $84.7K in net selling over the last 12 months.
Recent QMCO insider transactions
| Date | Insider | Role | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| Aug 5, 2026 | Anthony Craythorne | Chief Revenue Officer | Sale | 1.5K | $10.73 | $15.9K | SEC ↗ |
| Jul 7, 2026 | Laura A. Nash | Chief Accounting Officer | Sale | 260 | $10.51 | $2.7K | SEC ↗ |
| Jul 7, 2026 | Hugues Meyrath | President & CEO | Sale | 6.2K | $10.51 | $65.5K | SEC ↗ |
| Apr 3, 2026 | Laura A. Nash | Chief Accounting Officer | Sale | 109 | $5.44 | $592.96 | SEC ↗ |
| Oct 3, 2025 | Hugues Meyrath | President & CEO | Sale | 3.0K | $10.86 | $32.3K | SEC ↗ |
| Oct 3, 2025 | Laura A. Nash | Chief Accounting Officer | Sale | 729 | $10.71 | $7.8K | SEC ↗ |
| Sep 17, 2025 | Laura A. Nash | Chief Accounting Officer | Sale | 284 | $7.40 | $2.1K | SEC ↗ |
| Apr 23, 2025 | Lewis W. Moorehead | Chief Accounting Officer | Sale | 179 | $9.65 | $1.7K | SEC ↗ |
| Apr 23, 2025 | James J Lerner | President & CEO | Sale | 2.8K | $9.65 | $26.9K | SEC ↗ |
| Apr 23, 2025 | Brian E Cabrera | SVP Chief Admin Ofcr & Secy | Sale | 1.1K | $9.65 | $10.4K | SEC ↗ |
| Apr 17, 2025 | PACIFIC INVESTMENT MANAGEMENT CO LLC | 10% Owner | Sale | 962.1K | $10.25 | $9.9M | SEC ↗ |
| Apr 4, 2025 | Laura A. Nash | Chief Accounting Officer | Sale | 136 | $12.85 | $1.7K | SEC ↗ |
| Feb 5, 2025 | Kenneth P. Gianella | Chief Financial Officer | Sale | 1.3K | $21.53 | $27.5K | SEC ↗ |
| Jan 18, 2025 | James J Lerner | President & CEO | Sale | 2.5K | $35.68 | $89.6K | SEC ↗ |
| Jan 18, 2025 | Henk Jan Spanjaard | Chief Revenue Officer | Sale | 935 | $35.68 | $33.4K | SEC ↗ |
| Jan 18, 2025 | Kenneth P. Gianella | Chief Financial Officer | Sale | 1.5K | $35.68 | $53.1K | SEC ↗ |
| Jan 18, 2025 | Brian E Cabrera | SVP Chief Admin Ofcr & Secy | Sale | 2.3K | $31.71 | $72.5K | SEC ↗ |
| Jan 18, 2025 | Laura A. Nash | Chief Accounting Officer | Sale | 328 | $4.43 | $1.5K | SEC ↗ |
| Jan 18, 2025 | James J Lerner | President & CEO | Sale | 3.7K | $4.43 | $16.3K | SEC ↗ |
| Jan 18, 2025 | Henk Jan Spanjaard | Chief Revenue Officer | Sale | 218 | $4.43 | $965.74 | SEC ↗ |
| Jan 18, 2025 | Kenneth P. Gianella | Chief Financial Officer | Sale | 1.3K | $4.43 | $5.9K | SEC ↗ |
| Jan 18, 2025 | Brian E Cabrera | SVP Chief Admin Ofcr & Secy | Sale | 2.1K | $4.43 | $9.4K | SEC ↗ |
| Jan 7, 2025 | PACIFIC INVESTMENT MANAGEMENT CO LLC | 10% Owner | Sale | 228.2K | $61.52 | $14.0M | SEC ↗ |
| Dec 5, 2024 | Kenneth P. Gianella | Chief Financial Officer | Sale | 2.6K | $4.43 | $11.5K | SEC ↗ |
| Dec 5, 2024 | Henk Jan Spanjaard | Chief Revenue Officer | Sale | 394 | $4.43 | $1.7K | SEC ↗ |
Showing the 25 most recent of 109 Form 4 filings for QUANTUM CORP /DE/.
Most active QMCO insiders
- B. Riley Financial, Inc.17 filings
- James J Lerner17 filings
- Lewis W. Moorehead12 filings
- Michael J Dodson12 filings
- Brian E Cabrera11 filings
Ask anything about QMCO insider activity
Use Trabud's AI agent to query QUANTUM CORP /DE/'s Form 4 history in plain English — "Show me QMCO CEO purchases this year" or compare it against any other ticker.
Open the AI agentQMCO insider trading FAQ
Are QUANTUM CORP /DE/ insiders buying or selling?
In the last 12 months, QUANTUM CORP /DE/ insiders reported 0 open-market purchases ($0) and 4 sales ($84.7K) — net selling of $84.7K. Since March 2018, Trabud has recorded 109 Form 4 filings for QMCO: 24 buys ($13.2M) and 85 sells ($50.1M). Over the full record that is net selling of $36.9M.
How many insiders trade QMCO stock?
21 distinct insider filers — officers, directors, 10%+ owners, and investment groups filing jointly — have reported Form 4 transactions for QUANTUM CORP /DE/. The most recent filing was accepted on Aug 5, 2026.
Where does Trabud get QMCO insider trading data?
All QMCO insider trading data comes directly from official SEC EDGAR Form 4 filings, which corporate insiders must submit within two business days of a transaction under Section 16(a) of the Securities Exchange Act of 1934.