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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001258897-18-001351
Filing Date
2018-02-09
Accepted
2018-02-09 09:13:03
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G/A dfs495.htm SC 13G/A 51237
  Complete submission text file 0001258897-18-001351.txt   53057
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 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

Mailing Address 10713 WEST SAM HOUSTON PARKWAY NORTH SUITE 800 HOUSTON TX 77064
Business Address 10713 WEST SAM HOUSTON PARKWAY NORTH SUITE 800 HOUSTON TX 77064 2817657100
PATTERSON UTI ENERGY INC (Subject) CIK: 0000889900 (see all company filings)

IRS No.: 752504748 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A | Act: 34 | File No.: 005-44095 | Film No.: 18588466
SIC: 1381 Drilling Oil & Gas Wells
Office of Energy & Transportation