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Form SC 13G - Statement of Beneficial Ownership by Certain Investors:
SEC Accession No. 0001013594-18-000316
Filing Date
2018-04-23
Accepted
2018-04-23 15:14:59
Documents
2

Document Format Files

Seq Description Document Type Size
1 APRIL 23, 2018 geospace13g-042318.htm SC 13G 126349
2 JOINT FILING AGREEMENT (RESTATED) geospaceex991-042318.htm EX-99.1 12403
  Complete submission text file 0001013594-18-000316.txt   140391
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.: 18768742
SIC: 3829 Measuring & Controlling Devices, NEC

Mailing Address 19605 NE 8TH ST CAMAS WA 98607
Business Address 19605 NE 8TH ST CAMAS WA 98607 360-604-8600
Nierenberg Investment Management Company, Inc. (Filed by) CIK: 0001282683 (see all company filings)

IRS No.: 911677205 | State of Incorp.: WA | Fiscal Year End: 1231
Type: SC 13G