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Form 3 - Initial statement of beneficial ownership of securities:
SEC Accession No. 0001615774-18-015168
Filing Date
2018-12-28
Accepted
2018-12-28 19:04:38
Documents
1
Period of Report
2018-12-26

Document Format Files

Seq Description Document Type Size
1 FORM 3 s115058_form3.html 3  
1 FORM 3 s115058_form3.xml 3 13152
  Complete submission text file 0001615774-18-015168.txt   18662
Mailing Address 224 AIRPORT PARKWAY SUITE 550 SAN JOSE CA 95110
Business Address 224 AIRPORT PARKWAY SUITE 550 SAN JOSE CA 95110 408 944 4000
QUANTUM CORP /DE/ (Issuer) CIK: 0000709283 (see all company filings)

IRS No.: 942665054 | State of Incorp.: DE | Fiscal Year End: 0331
SIC: 3572 Computer Storage Devices

Mailing Address 119 ROWAYTON AVENUE 2ND FLOOR NORWALK CT 06853
Business Address 119 ROWAYTON AVENUE 2ND FLOOR NORWALK CT 06853 212-230-3220
Dialectic Antithesis Partners, LP (Reporting) CIK: 0001325552 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258390

Mailing Address 21255 BURBANK BLVD. SUITE 400 WOODLAND HILLS CA 91367
Business Address 21255 BURBANK BLVD. SUITE 400 WOODLAND HILLS CA 91367 818-884-3737
B. Riley Financial, Inc. (Reporting) CIK: 0001464790 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258385
SIC: 7389 Services-Business Services, NEC

Mailing Address 11100 SANTA MONICA BLVD SUITE 800 LOS ANGELES CA 90025
Business Address 11100 SANTA MONICA BLVD SUITE 800 LOS ANGELES CA 90025 310-966-1444
B. Riley FBR, Inc. (Reporting) CIK: 0001505748 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258389

Mailing Address 11100 SANTA MONICA BLVD. SUITE 800 LOS ANGELES CA 90025
Business Address 11100 SANTA MONICA BLVD. SUITE 800 LOS ANGELES CA 90025 310-966-1445
BRC Partners Opportunity Fund, LP (Reporting) CIK: 0001642765 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258386

Mailing Address 11100 SANTA MONICA BLVD. SUITE 800 LOS ANGELES CA 90025
Business Address 11100 SANTA MONICA BLVD. SUITE 800 LOS ANGELES CA 90025 310-966-1445
B. RILEY CAPITAL MANAGEMENT, LLC (Reporting) CIK: 0001658704 (see all company filings)

State of Incorp.: NY | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258388

Mailing Address 11100 SANTA MONICA BLVD., SUITE 800 LOS ANGELES CA 90025
Business Address 11100 SANTA MONICA BLVD., SUITE 800 LOS ANGELES CA 90025 310-966-1444
BR Dialectic Capital Management, LLC (Reporting) CIK: 0001704985 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258391

Mailing Address 11100 SANTA MONICA BLVD SUITE 800 LOS ANGELES CA 90025
Business Address 11100 SANTA MONICA BLVD SUITE 800 LOS ANGELES CA 90025 310-689-2220
BRC Partners Management GP, LLC (Reporting) CIK: 0001749420 (see all company filings)

State of Incorp.: DE | Fiscal Year End: 1231
Type: 3 | Act: 34 | File No.: 001-13449 | Film No.: 181258387