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Form SC 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000315066-18-001288
Filing Date
2018-02-13
Accepted
2018-02-13 09:38:41
Documents
1

Document Format Files

Seq Description Document Type Size
1 filing.txt SC 13G/A 7849
  Complete submission text file 0000315066-18-001288.txt   9496
Mailing Address 245 SUMMER STREET BOSTON MA 02210
Business Address 245 SUMMER STREET BOSTON MA 02210 6175706339
FMR LLC (Filed by) CIK: 0000315066 (see all company filings)

IRS No.: 043532603 | State of Incorp.: DE | Fiscal Year End: 1231
Type: SC 13G/A
SIC: 0000

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/A | Act: 34 | File No.: 005-52075 | Film No.: 18599801
SIC: 3829 Measuring & Controlling Devices, NEC