Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000891804-05-000503
Filing Date
2005-02-11
Accepted
2005-02-11 14:36:55
Documents
1
Group Members
COLUMBIA ACORN TRUSTWAM ACQUISITION GP, INC.

Document Format Files

Seq Description Document Type Size
1 CIPHERGEN BIOSYSTEMS, INC. ciphergen.txt SC 13G/A 17991
  Complete submission text file 0000891804-05-000503.txt   20364
Mailing Address 227 W MONROE ST STE 3000 CHICAGO IL 60606
Business Address 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 3126349231
COLUMBIA WANGER ASSET MANAGEMENT LP (Filed by) CIK: 0000908733 (see all company filings)

EIN.: 363820584 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address
Business Address 6611 DUMBARTON CIRCLE FREMONT CA 94555 5105052100
CIPHERGEN BIOSYSTEMS INC (Subject) CIK: 0000926617 (see all company filings)

EIN.: 330595156 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-60711 | Film No.: 05597450
SIC: 3826 Laboratory Analytical Instruments