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Filing Detail
Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0000950123-11-011987
Filing Date
2011-02-11
Accepted
2011-02-10 17:58:51
Documents
2

Document Format Files

Seq Description Document Type Size
1 SC 13G/A c62860a5sc13gza.htm SC 13G/A 36953
2 EX-99.1 c62860a5exv99w1.htm EX-99.1 3708
  Complete submission text file 0000950123-11-011987.txt   43117
Mailing Address 227 W MONROE ST STE 3000 CHICAGO IL 60606
Business Address 227 W MONROE STREET SUITE 3000 CHICAGO IL 60606 312-634-9200
COLUMBIA WANGER ASSET MANAGEMENT LLC (Filed by) CIK: 0000908733 (see all company filings)

IRS No.: 043519872 | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address 3993 W. SAM HOUSTON PARKWAY N. SUITE 100 HOUSTON TX 77043
Business Address 3993 W. SAM HOUSTON PARKWAY N. SUITE 100 HOUSTON TX 77043 713-359-7000
TESCO CORP (Subject) CIK: 0001022705 (see all company filings)

IRS No.: 980053204 | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-51291 | Film No.: 11594028
SIC: 3533 Oil & Gas Field Machinery & Equipment