| $164M | ||
| $143M | ||
| $143M | ||
| $94M | ||
| $60M | ||
| $35M |
Buys | $0 | 0 | 0 |
Sells | $24,256,326 | 14 | 100 |
| Moorehead Lewis W. | Chief Accounting Officer | 0 | $0 | 1 | $1,727 | $-1,727 |
| Nash Laura A. | Chief Accounting Officer | 0 | $0 | 3 | $9,906 | $-9,906 |
| Meyrath Hugues | President & CEO | 0 | $0 | 1 | $32,309 | $-32,309 |
| Spanjaard Henk Jan | Chief Revenue Officer | 0 | $0 | 1 | $33,361 | $-33,361 |
| Gianella Kenneth P. | Chief Financial Officer | 0 | $0 | 2 | $80,592 | $-80,592 |
| Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 0 | $0 | 2 | $81,619 | $-81,619 |
| Lerner James J | President & CEO | 0 | $0 | 2 | $116,455 | $-116,455 |
| PACIFIC INVESTMENT MANAGEMENT CO LLC | 10 percent owner | 0 | $0 | 2 | $23.9M | $-23.9M |
Quantum Corporation provides products for storing and managing digital video and unstructured data in the Americas, Europe, the Middle East, Africa, and the Asia Pacific. The company offers CatDV, an asset management and workflow orchestration platform that provides asset management, automation, and collaboration tools for organization that manages large volumes of digital media; StorNext software systems that enable high-speed ingest, editing, processing, and management of digital video and image datasets; and Scalar tape systems that provide long-term data storage facility to archive and preserve digital content for decades. It also provides DXi backup appliances for backup storage and multi-site disaster recovery; portfolio of products designed for the capture and analysis of video surveillance and security, including video recording servers, as well as hyperconverged storage systems for video surveillance management and recording; and appliances designed for video surveillance analytics and to run various types of access control systems. In addition, the company offers managed services, customer support agreements, software subscriptions, installation, and consulting and training services; and object storage systems for online content repositories, such as media archives, genome sequencing data repositories, and big data lakes. Further, it sells linear tape-open (LTO) tape cartridges, as well as standalone LTO tape drives for small business and desktop use. The company sells its products through a network of distributors, value-added resellers, direct marketing resellers, original equipment manufacturers, and other suppliers, as well as directly to corporate entities and government agencies. Quantum Corporation was founded in 1980 and is headquartered in San Jose, California.
Over the last 12 months, insiders at Quantum Corporation have bought $0 and sold $24.26M worth of Quantum Corporation stock.
On average, over the past 5 years, insiders at Quantum Corporation have bought $515,617 and sold $7.24M worth of stock each year.
There was no buying activity among insiders over the last 12 months.
The last purchase of 8,767 shares for transaction amount of $49,972 was made by RAU RAGHAVENDRA (director) on 2021‑08‑12.
| 2025-10-02 | Sale | Meyrath Hugues | President & CEO | 2,975 0.0521% | $10.86 | $32,309 | -16.41% | |
| 2025-10-02 | Sale | Nash Laura A. | Chief Accounting Officer | 611 0.0107% | $10.86 | $6,635 | -16.41% | |
| 2025-10-01 | Sale | Nash Laura A. | Chief Accounting Officer | 118 0.0019% | $9.91 | $1,169 | -14.42% | |
| 2025-09-12 | Sale | Nash Laura A. | Chief Accounting Officer | 284 0.0046% | $7.40 | $2,101 | +27.81% | |
| 2025-04-21 | Sale | Lerner James J | President & CEO | 2,784 0.0409% | $9.65 | $26,862 | -7.01% | |
| 2025-04-21 | Sale | Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 1,078 0.0158% | $9.65 | $10,401 | -7.01% | |
| 2025-04-21 | Sale | Moorehead Lewis W. | Chief Accounting Officer | 179 0.0026% | $9.65 | $1,727 | -7.01% | |
| 2025-04-15 | Sale | PACIFIC INVESTMENT MANAGEMENT CO LLC | 10 percent owner | 962,127 15.0253% | $10.25 | $9.86M | -18.21% | |
| 2025-02-03 | Sale | Gianella Kenneth P. | Chief Financial Officer | 1,279 0.0212% | $21.53 | $27,536 | -52.48% | |
| 2025-01-16 | Sale | Lerner James J | President & CEO | 2,511 0.0489% | $35.68 | $89,592 | -73.17% | |
| 2025-01-16 | Sale | Gianella Kenneth P. | Chief Financial Officer | 1,487 0.0289% | $35.68 | $53,056 | -73.17% | |
| 2025-01-16 | Sale | Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 1,996 0.0389% | $35.68 | $71,217 | -73.17% | |
| 2025-01-16 | Sale | Spanjaard Henk Jan | Chief Revenue Officer | 935 0.0182% | $35.68 | $33,361 | -73.17% | |
| 2025-01-03 | Sale | PACIFIC INVESTMENT MANAGEMENT CO LLC | 10 percent owner | 228,195 5.4496% | $61.52 | $14.04M | -80.84% | |
| 2024-11-08 | Sale | Lerner James J | President & CEO | 3,681 0.0788% | $4.43 | $16,307 | +149.44% | |
| 2024-11-08 | Sale | Gianella Kenneth P. | Chief Financial Officer | 1,332 0.0285% | $4.43 | $5,901 | +149.44% | |
| 2024-11-08 | Sale | Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 2,118 0.0453% | $4.43 | $9,383 | +149.44% | |
| 2024-11-08 | Sale | Spanjaard Henk Jan | Chief Revenue Officer | 218 0.0047% | $4.43 | $966 | +149.44% | |
| 2024-11-08 | Sale | Nash Laura A. | Chief Accounting Officer | 328 0.007% | $4.43 | $1,453 | +149.44% | |
| 2023-11-02 | Sale | Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 5,543 0.0062% | $0.47 | $2,586 | -10.34% |
| Lerner James J | President & CEO | 110848 1.7739% | $999,294.72 | 1 | 14 | +8.64% |
| Gianella Kenneth P. | Chief Financial Officer | 32402 0.5185% | $292,104.03 | 0 | 3 | |
| Cabrera Brian E | SVP Chief Admin Ofcr & Secy | 28736 0.4599% | $259,055.04 | 0 | 10 | |
| Moorehead Lewis W. | Chief Accounting Officer | 24971 0.3996% | $225,113.57 | 1 | 10 | <0.0001% |
| Meyrath Hugues | President & CEO | 24700 0.3953% | $222,670.50 | 0 | 1 | |
| Spanjaard Henk Jan | Chief Revenue Officer | 14903 0.2385% | $134,350.55 | 0 | 2 | |
| Nash Laura A. | Chief Accounting Officer | 11139 0.1783% | $100,418.09 | 0 | 6 | |
| PACIFIC INVESTMENT MANAGEMENT CO LLC | 10 percent owner | 0 0% | $0 | 0 | 2 | |
| B. Riley Financial, Inc. | 10 percent owner | 2248511 35.9832% | $20.27M | 35 | 2 | +57.38% |
| BRITTS WILLIAM C | SVP, Worldwide Sales & Mktg. | 1204775 19.2802% | $10.86M | 1 | 8 | <0.0001% |
| DODSON J MICHAEL | Senior Vice President, CFO | 870372 13.9287% | $7.85M | 1 | 10 | +8.64% |
| Smith Jeffrey C | 10 percent owner | 782771 12.5268% | $7.06M | 0 | 5 | |
| Starboard Value LP | 10 percent owner | 782771 12.5268% | $7.06M | 4 | 7 | +8.11% |
| BELLUZZO RICHARD | director | 637185 10.197% | $5.74M | 1 | 10 | +141.94% |
| Powers Gregg J | director | 586500 9.3858% | $5.29M | 2 | 0 | <0.0001% |
| Auvil Paul R. III | director | 554030 8.8662% | $4.99M | 3 | 0 | <0.0001% |
| Lee Janae S. | SVP, Strategy | 517651 8.284% | $4.67M | 0 | 1 | |
| Stinson Theodore A. | SVP, Worldwide Sales | 480000 7.6815% | $4.33M | 2 | 0 | <0.0001% |
| Stedman Geoff G. | SVP, StorNext Solutions | 406590 6.5067% | $3.67M | 2 | 0 | <0.0001% |
| GACEK JON W | President and CEO | 401414 6.4239% | $3.62M | 3 | 6 | +2.77% |
| Hurley John | Chief Revenue Officer | 341519 5.4654% | $3.08M | 0 | 3 | |
| King Elizabeth | Chief Revenue Officer | 285114 4.5627% | $2.57M | 0 | 4 | |
| FULLER DALE L | director | 233890 3.743% | $2.11M | 2 | 0 | <0.0001% |
| RAU RAGHAVENDRA | director | 190281 3.0451% | $1.72M | 1 | 0 | <0.0001% |
| Ahmad Fuad | SVP, Chief Financial Officer | 172470 2.7601% | $1.55M | 0 | 2 | |
| LOPATIN GERALD | Executive VP, Engineering | 170833 2.7339% | $1.54M | 0 | 3 | |
| Singer Eric | 10 percent owner | 159421 2.5512% | $1.44M | 0 | 1 | |
| FICHTHORN JOHN | director | 154740 2.4763% | $1.39M | 4 | 1 | <0.0001% |
| FETTER ELIZABETH A | director | 138392 2.2147% | $1.25M | 0 | 6 | |
| Rothman Marc E | director | 136977 2.1921% | $1.23M | 1 | 0 | <0.0001% |
| HALL SHAWN D | Senior VP, GC & Secretary | 135146 2.1628% | $1.22M | 0 | 7 | |
| ESBER EDWARD M | director | 92135 1.4744% | $830,597.03 | 2 | 3 | +113.56% |
| WOLF DENNIS P | director | 88776 1.4207% | $800,315.64 | 0 | 1 | |
| Martella Donald E. Jr. | SVP, Engineering | 81407 1.3028% | $733,884.11 | 0 | 4 | |
| Clark Robert S. | SVP, Product Operations | 74703 1.1955% | $673,447.55 | 0 | 2 | |
| MacPherson Regan J | Chief Legal&Compliance Officer | 53831 0.8615% | $485,286.47 | 0 | 1 | |
| BR Dialectic Capital Management, LLC | 10 percent owner | 0 0% | $0 | 0 | 1 |
$329,602,573 | 131 | -42.65% | $1.1B | |
$1,139,026 | 90 | -3.47% | $9.24M | |
$18,302,637 | 88 | 32.10% | $245.25M | |
$13,607,543 | 72 | 9.67% | $85.02M | |
Quantum Corporation (QMCO) | $30,163,251 | 66 | 30.00% | $56.33M |
$1,776,254 | 55 | 37.74% | $43.48M | |
$15,430,293 | 30 | -9.75% | $16.56B | |
$250,094 | 27 | -7.34% | $721.96M | |
$587,999,590 | 22 | 4.45% | $23.14B | |
$419,760 | 19 | 38.07% | $163.91M | |
$312,874 | 17 | -77.80% | $9.07B | |
$1,674,618 | 15 | -13.41% | $61.18M | |
$575,833 | 10 | 43.97% | $27.34M | |
$4,212,621 | 9 | 103.67% | $19.24B | |
$107,579,976 | 6 | 12.61% | $655.39M | |
$2,100,965 | 4 | 13.01% | $23.09B | |
$1,094,746 | 3 | 2.94% | $17.87B | |
$118,756 | 1 | 12.09% | $802.24M | |
$1,250,000 | 1 | -61.82% | $8.53B |
| Increased Positions | 17 | +51.52% | 259,468 | +29.36% |
| Decreased Positions | 12 | -36.36% | 277,624 | -31.42% |
| New Positions | 4 | New | 33,479 | New |
| Sold Out Positions | 9 | Sold Out | 229,877 | Sold Out |
| Total Postitions | 38 | +15.15% | 865,525 | -2.05% |
| Vanguard Group Inc | $2,647.00 | 2.17% | 303,597 | +46,919 | +18.28% | 2025-09-30 |
| Ubs Group Ag | $1,418.00 | 1.16% | 162,605 | +102,384 | +170.01% | 2025-09-30 |
| Blackrock, Inc. | $1,416.00 | 1.16% | 162,338 | +21,027 | +14.88% | 2025-09-30 |
| Geode Capital Management, Llc | $693.00 | 0.57% | 79,427 | +10,043 | +14.47% | 2025-09-30 |
| Alphaquest Llc | $310.00 | 0.25% | 35,536 | +30,829 | +654.96% | 2025-09-30 |
| State Street Corp | $238.00 | 0.2% | 27,347 | 0 | 0% | 2025-09-30 |
| Royal Bank Of Canada | $198.00 | 0.16% | 22,715 | +3,362 | +17.37% | 2025-09-30 |
| Flagship Harbor Advisors, Llc | $198.00 | 0.16% | 22,710 | +22,710 | New | 2025-09-30 |
| Northern Trust Corp | $102.00 | 0.08% | 11,687 | 0 | 0% | 2025-09-30 |
| Riverview Capital Advisers, Llc | $87.00 | 0.07% | 10,000 | +10,000 | New | 2025-09-30 |