EDGAR Filing Documents for 0000950123-11-056900

Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]

SEC Accession No. 0000950123-11-056900

Filing Date

2011-06-06

Accepted

2011-06-06 16:02:05

Documents

Document Format Files

Seq	Description	Document	Type	Size
1	SC 13G/A	c64999csc13gza.htm	SC 13G/A	36275
	Complete submission text file	0000950123-11-056900.txt		38319

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.: 11895350
SIC: 3533 Oil & Gas Field Machinery & Equipment