Form 13F-HR - Quarterly report filed by institutional managers, Holdings:
SEC Accession No. 0000950123-21-006304
Filing Date
2021-05-13
Accepted
2021-05-13 16:39:06
Documents
2
Period of Report
2021-03-31
Effectiveness Date
2021-05-13

Document Format Files

Seq Description Document Type Size
1 primary_doc.html 13F-HR  
1 primary_doc.xml 13F-HR 1871
2 INFORMATION TABLE FOR FORM 13F 0000950123-21-006304-4548.html INFORMATION TABLE  
2 INFORMATION TABLE FOR FORM 13F 0000950123-21-006304-4548.xml INFORMATION TABLE 3898
  Complete submission text file 0000950123-21-006304.txt   6953
Mailing Address 450 KENDALL STREET CAMBRIDGE MA 02142
Business Address 450 KENDALL STREET CAMBRIDGE MA 02142 6174259200
MPM ASSET MANAGEMENT LLC (Filer) CIK: 0001263048 (see all company filings)

EIN.: 043351032 | State of Incorp.: DE | Fiscal Year End: 1231
Type: 13F-HR | Act: 34 | File No.: 028-13379 | Film No.: 21920250