Form 10-K - Annual report [Section 13 and 15(d), not S-K Item 405]:
SEC Accession No. 0001056404-05-001639
Filing Date
2005-03-31
Accepted
2005-03-31 11:21:58
Documents
1
Period of Report
2004-12-31

Document Format Files

Seq Description Document Type Size
1 mab04op1_2004.txt 10-K 16056
  Complete submission text file 0001056404-05-001639.txt   17426
Mailing Address
Business Address 1285 AVE OF THE AMERICAS NEW YORK NY 10019
MASTR ASSET BACKED SECURITIES TRUST 2004-OPT1 (Filer) CIK: 0001285109 (see all company filings)

EIN.: 000000000 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 10-K | Act: 34 | File No.: 333-106982-19 | Film No.: 05717353
SIC: 6189 Asset-Backed Securities