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Form SC 13G/A - Statement of acquisition of beneficial ownership by individuals: [Amend]
SEC Accession No. 0001258897-18-001310
Filing Date
2018-02-09
Accepted
2018-02-09 09:11:44
Documents
1

Document Format Files

Seq Description Document Type Size
1 SCHEDULE 13G/A dfs454.htm SC 13G/A 51224
  Complete submission text file 0001258897-18-001310.txt   52882
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 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107
Business Address 3475 EAST FOOTHILL BOULEVARD PASADENA CA 91107 6263514664
TETRA TECH INC (Subject) CIK: 0000831641 (see all company filings)

IRS No.: 954148514 | State of Incorp.: DE | Fiscal Year End: 0928
Type: SC 13G/A | Act: 34 | File No.: 005-43035 | Film No.: 18588405
SIC: 8711 Services-Engineering Services