Form SCHEDULE 13G/A - Statement of Beneficial Ownership by Certain Investors: [Amend]
SEC Accession No. 0000102909-25-000177
Filing Date
2025-10-30
Accepted
2025-10-30 15:19:41
Documents
1

Document Format Files

Seq Description Document Type Size
1 primary_doc.html SCHEDULE 13G/A  
1 primary_doc.xml SCHEDULE 13G/A 4546
  Complete submission text file 0000102909-25-000177.txt   6298
Mailing Address PO BOX 2600 V26 VALLEY FORGE PA 19482-2600
Business Address 100 VANGUARD BLVD MALVERN PA 19355 6106691000
VANGUARD GROUP INC (Filed by) CIK: 0000102909 (see all company filings)

EIN.: 231945930 | State of Incorp.: PA | Fiscal Year End: 1231
Type: SCHEDULE 13G/A

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.: 251434850
SIC: 3829 Measuring & Controlling Devices, NEC
(CF Office: 08 Industrial Applications and Services)