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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000354204-11-001121
Filing Date
2011-02-11
Accepted
2011-02-11 14:08:50
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G rrd444.htm SC 13G/A 50181
  Complete submission text file 0000354204-11-001121.txt   52471
Mailing Address 1250 N.E. LOOP 410 SUITE 1000 SAN ANTONIO TX 78209
Business Address 1250 N.E. LOOP 410 SUITE 1000 SAN ANTONIO TX 78209 5128287689
PIONEER DRILLING CO (Subject) CIK: 0000320575 (see all company filings)

IRS No.: 742088619 | State of Incorp.: TX | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-33018 | Film No.: 11597668
SIC: 1381 Drilling Oil & Gas Wells

Mailing Address 6300 BEE CAVE ROAD BUILDING ONE AUSTIN TX 78746
Business Address 6300 BEE CAVE ROAD BUILDING ONE AUSTIN TX 78746 (512) 306-7400
DIMENSIONAL FUND ADVISORS LP (Filed by) CIK: 0000354204 (see all company filings)

IRS No.: 222370029 | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000