Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0001050442-25-000014
Filing Date
2025-05-15
Accepted
2025-05-15 16:15:41
Documents
1

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G/A  
1 primary_doc.xml SCHEDULE 13G/A 4800
  Complete submission text file 0001050442-25-000014.txt   6597
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)

EIN.: 760447780 | State of Incorp.: TX | Fiscal Year End: 0930
Type: SCHEDULE 13G/A | Act: 34 | File No.: 005-52075 | Film No.: 25953373
SIC: 3829 Measuring & Controlling Devices, NEC
(CF Office: 08 Industrial Applications and Services)

Mailing Address 150 S. FIFTH ST SUITE 2550 MINNEAPOLIS MN 55402
Business Address 150 S 5TH ST SUITE 2550 MINNEAPOLIS MN 55402 6123174100
DISCIPLINED GROWTH INVESTORS INC /MN (Filed by) CIK: 0001050442 (see all company filings)

EIN.: 411901233 | State of Incorp.: MN | Fiscal Year End: 1231
Type: SCHEDULE 13G/A