← United States · Coverage record
US · SEC FORM 4
QUANTUM CORP /DE/
QMCO · Nasdaq · CIK 0000709283 · Technology · Computer Hardware
INSIDER SIGNAL
0 qualifying P purchase groups
in the current 180-day scoring window
14 Form 4 transaction lines observed in the same window
3 sales · 11 option, withholding, award, gift or other lines
WHY NO ACTIVE SIGNAL?
Score anatomy
No score is calculated because there is no qualifying purchase in the active window. Unavailable inputs are not treated as zero or as a bearish signal.
Why is there no score?
- No qualifying open-market purchase supplies cluster, size, role, recency or conviction inputs.
- Sales and other Form 4 activity remain visible as context and do not create a negative score.
Sales and other Form 4 activity are shown separately and do not create a negative buy signal. Absence of buying is not scored as bearish.
Insider activity timeline
Owner lanes show the latest 180 days. Symbol shape identifies the transaction type; sales remain context only.
Showing the six most active owners; 5 additional owner(s) remain in Form 4 evidence.
Purchase breadth, concentration & cluster buying
These modules activate when qualifying purchases enter the 180-day research window.
SIGNAL HISTORY
Scores are archived only when the company qualifies for a published US buy-signal snapshot. Last qualifying purchase: 2021-08-12 · FICHTHORN JOHN.
Recent Form 4 activity
P is an open-market or private purchase. S is a sale. M, F, A and G usually describe exercises, tax withholding, awards and gifts. These categories remain visually separate.
Market context
Market context has not been captured for this ticker yet. The daily market-context job processes the US universe in rotating batches.
Short interest
Short interest is external context reported to FINRA by broker-dealers. It does not affect the Insider Signal.
- Shares short
- 3,122,337
- Previous report
- 2,045,010
- Avg daily volume
- 2,174,445
- Days to cover
- 1.4
FINRA settlement date: 2026-09-30 · Captured 2026-10-12 · FINRA equity short interest ↗. A share count, published about a week after each of two settlement dates a month; not a percentage of shares outstanding.
Historical equity purchases
Qualifying code P transactions in the local Form 4 history, including purchases outside the current signal window.
| Transaction date | Reporting owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2021-08-12 | FICHTHORN JOHN | Purchase (P) | Common Stock | 10,000 | USD 5.73 | USD 57,300 | SEC filing ↗ |
| 2021-08-12 | Rothman Marc E | Purchase (P) | Common Stock | 20,000 | USD 5.70 | USD 114,000 | SEC filing ↗ |
| 2021-08-12 | RAU RAGHAVENDRA | Purchase (P) | Common Stock | 8,767 | USD 5.70 | USD 49,972 | SEC filing ↗ |
| 2021-08-11 | FICHTHORN JOHN | Purchase (P) | Common Stock | 30,000 | USD 5.69 | USD 170,700 | SEC filing ↗ |
| 2020-12-17 | FICHTHORN JOHN | Purchase (P) | Common Stock | 1,200 | USD 6.25 | USD 7,500 | SEC filing ↗ |
| 2020-12-16 | FICHTHORN JOHN | Purchase (P) | Common Stock | 18,800 | USD 6.18 | USD 116,184 | SEC filing ↗ |
| 2020-04-24 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 9,036 | USD 3.80 | USD 34,337 | SEC filing ↗ |
| 2020-04-21 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 21,371 | USD 3.81 | USD 81,424 | SEC filing ↗ |
| 2020-04-20 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 40,200 | USD 3.90 | USD 156,780 | SEC filing ↗ |
| 2020-04-16 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 425 | USD 3.65 | USD 1,551 | SEC filing ↗ |
| 2020-04-15 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 21,842 | USD 3.59 | USD 78,413 | SEC filing ↗ |
| 2020-04-14 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 96,783 | USD 3.79 | USD 366,808 | SEC filing ↗ |
| 2020-04-13 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 95,450 | USD 3.59 | USD 342,666 | SEC filing ↗ |
| 2020-04-09 | B. RILEY CAPITAL MANAGEMENT, LLC; B. Riley FBR, Inc.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 39,365 | USD 3.62 | USD 142,501 | SEC filing ↗ |
| 2020-04-08 | B. RILEY CAPITAL MANAGEMENT, LLC; B. RILEY FBR, INC.; B. Riley Financial, Inc.; BRC Partners Management GP, LLC; BRC Partners Opportunity Fund, LP | Purchase (P) | Common Stock | 12,275 | USD 3.23 | USD 39,648 | SEC filing ↗ |
Form 4 evidence
27 transaction lines in the latest 365-day window; 243 in local history.
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | White Yue Zhou | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Tracy John R. | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Patel Hiral | Award / grant (A) | Common Stock | 50,000 | USD 0.00 | USD 0 | SEC filing ↗ |
Show recent Form 4 evidence (27 grouped rows)
| Date | Owner | Type | Security | Shares | Avg. price | Approx. value | Source |
|---|---|---|---|---|---|---|---|
| 2026-10-01 | White Yue Zhou | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Tracy John R. | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Patel Hiral | Award / grant (A) | Common Stock | 50,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Jaworksi Don | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | FICHTHORN JOHN | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Clancy James C | Award / grant (A) | Common Stock | 150,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-10-01 | Blevins Tony J | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-08-03 | Craythorne Anthony | Sale (S) | Common Stock | 1,478 | USD 10.73 | USD 15,859 | SEC filing ↗ |
| 2026-07-02 | Nash Laura A. | Sale (S) | Common Stock | 260 | USD 10.51 | USD 2,733 | SEC filing ↗ |
| 2026-07-02 | Meyrath Hugues | Sale (S) | Common Stock | 6,232 | USD 10.51 | USD 65,498 | SEC filing ↗ |
| 2026-06-04 | FICHTHORN JOHN | C (C) | Common Stock | 11,020,645 | USD 5.19 | USD 57,197,148 | SEC filing ↗ |
| 2026-06-04 | FICHTHORN JOHN | Award / grant (A) | Common Stock | 3,083,975 | USD 5.19 | USD 16,005,830 | SEC filing ↗ |
| 2026-06-04 | Dialectic Technology SPV LLC | C (C) | Common Stock | 11,020,645 | USD 5.19 | USD 57,197,148 | SEC filing ↗ |
| 2026-06-04 | Dialectic Technology SPV LLC | Award / grant (A) | Common Stock | 3,083,975 | USD 5.19 | USD 16,005,830 | SEC filing ↗ |
| 2026-04-02 | Nash Laura A. | Sale (S) | Common Stock | 109 | USD 5.44 | USD 593 | SEC filing ↗ |
| 2026-03-04 | White William Hillis | Award / grant (A) | Common Stock | 25,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | White Yue Zhou | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Tracy John R. | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Meyrath Hugues | Award / grant (A) | Common Stock | 62,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Jaworksi Don | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | FICHTHORN JOHN | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Craythorne Anthony | Award / grant (A) | Common Stock | 15,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Clancy James C | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2026-01-01 | Blevins Tony J | Award / grant (A) | Common Stock | 12,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-01 | Meyrath Hugues | Award / grant (A) | Common Stock | 37,500 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-01 | Clancy James C | Award / grant (A) | Common Stock | 1,000 | USD 0.00 | USD 0 | SEC filing ↗ |
| 2025-11-01 | Blevins Tony J | Award / grant (A) | Common Stock | 1,000 | USD 0.00 | USD 0 | SEC filing ↗ |
Multiple price lines in one filing are grouped and share-weighted. Price and value are blank when a grouped filing line lacks price evidence.
Snapshot & identity
| Snapshot date | 2026-10-18 |
|---|---|
| Ranking version | US-v1.2 |
| Data quality | PASS ELIGIBLE · — |
| Ticker | QMCO |
| CIK | 0000709283 |
| Sector | Technology |
| Industry | Computer Hardware Yahoo Finance |
| SEC SIC | 3572 Computer Storage Devices |
| Exchange | Nasdaq |
Data coverage
| Local Form 4 history | 243 transaction lines from 2020-01-29 to 2026-10-01 38 P purchase lines · 92 S sale lines · 113 other lines |
|---|---|
| SEC company submissions | Open SEC filings ↗ |
Local ledger as of 2026-10-18. Mapping status is an audit field and does not erase SEC filing evidence.