Security key
37364X109
GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS)
CUSIP: 37364X109
Q3 2026 13F Holders as of 30 Sep 2026
- Security type / class
- Equity / Common Stock
- Total 13F shares
- 876
- Total 13F value
- $4,283
- Share change
- -240
- SEC-reported price per share
- $4.89
- Number of holders
- 3
- Value change
- -$1,550
- Number of sells
- 3
- Shares outstanding
- 12,944,502
Holder snapshot
5 signals
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q3 2026
Institutions
3
Top holders
3
GEOS full security history
Ownership snapshot
Full 13F holder table
GEOSPACE TECHNOLOGIES CORP SEC filings
GEOSPACE TECHNOLOGIES CORP company facts
Broader feeds
Reporting periods
Holder history for CUSIP 37364X109
Recent filing periods:
Ownership snapshot
Top reported holders of GEOS - GEOSPACE TECHNOLOGIES CORP - Common Stock (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
Tieton Capital Management...
Disclosed value leader
DIMENSIONAL FUND ADVISORS LP
Comparable rows
15/15
Latest evidence
30 Jun 2026
13F
13D/G
3/4/5
Lead comparable stake: 6.9%
13D/G row: Tieton Capital Management, LLC
Showing 1-6 of 15 holder rows.
Quick read
Tieton Capital Management, LLC leads the comparable SEC ownership view at 6.9%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens Tieton Capital Management, LLC's linked filing trail.
Comparable ownership
Top 5
Tieton Capital Management, LLC
6.9%
GRACE & WHITE INC /NY
6.1%
DIMENSIONAL FUND ADVISORS LP
4.9%
VANGUARD CAPITAL MANAGEMENT LLC
4.6%
BlackRock, Inc.
2.7%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| Tieton Capital Management, LLC |
13F
13D/G
Company
|
6.9%
from 13D/G
|
$6,142,000
907,265 shares
|
— | 30 Jun 2026 |
| GRACE & WHITE INC /NY |
13F
13D/G
Company
|
6.1%
from 13D/G
|
$4,557,808
673,236 shares
|
— | 30 Jun 2026 |
| DIMENSIONAL FUND ADVISORS LP |
13D/G
13F
Company
|
4.9%
|
$10,412,654
628,404 shares
|
-$356,736 | 30 Sep 2025 |
| VANGUARD CAPITAL MANAGEMENT LLC |
13D/G
13F
Vanguard Capital Management · Company
|
4.6%
|
$4,290,122
596,679 shares
|
-$441,782 | 30 Jun 2026 |
| BlackRock, Inc. |
13D/G
13F
Company
|
2.7%
|
$4,871,245
341,602 shares
|
$0 | 30 Jun 2025 |
| Walter R. Wheeler |
3/4/5
Director
|
1.3%
|
$3,914,856
172,006 shares
|
— | 09 Feb 2026 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q3 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
3
Shares
876
Rows available
3
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q3 2026 vs Q2 2026 Across Filers
Q2 2026 holders
82
Q3 2026 holders
3
Holder diff
-79
| Investor | Q2 2026 Shares | Q3 2026 Shares | Share Diff | Share Chg % | Q2 2026 value | Q3 2026 value | Value change | Value Chg % |
|---|
Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).
Quarterly Holders Trend
Quarterly Value Trend
Quarterly Shares Trend