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Filing Detail
Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0000932471-18-002983
Filing Date
2018-02-08
Accepted
2018-02-08 14:26:42
Documents
1

Document Format Files

Seq Description Document Type Size
1 geospacetechnologiescorp.htm SC 13G 43756
  Complete submission text file 0000932471-18-002983.txt   45303
Mailing Address PO BOX 2600 V26 VALLEY FORGE PA 19482-2600
Business Address PO BOX 2600 V26 VALLEY FORGE PA 19482-2600 6106691000
VANGUARD GROUP INC (Filed by) CIK: 0000102909 (see all company filings)

IRS No.: 231945930 | State of Incorp.: PA | Fiscal Year End: 1231
Type: SC 13G

Mailing Address 7007 PINEMONT DR. HOUSTON TX 77040
Business Address 7007 PINEMONT DR. HOUSTON TX 77040 7139864444
GEOSPACE TECHNOLOGIES CORP (Subject) CIK: 0001001115 (see all company filings)

IRS No.: 760447780 | State of Incorp.: TX | Fiscal Year End: 0930
Type: SC 13G | Act: 34 | File No.: 005-52075 | Film No.: 18585050
SIC: 3829 Measuring & Controlling Devices, NEC