Security Snapshot

GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS) Institutional Ownership

CUSIP: 37364X109

13F Institutional Holders and Ownership History from Q1 2014 to Q1 2026

Latest Period

Q4 2025

Institutions Reporting

84

Shares (Excl. Options)

7,150,608

Price

$16.91

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Type / Class
Equity / Common Stock
Symbol
GEOS on Nasdaq
Shares outstanding
12,904,373
Price per share
$9.28
All holders as of 31 Dec 2025
Q4 2025
Total 13F shares
7,150,608
Total reported value
$120,932,660
% of total 13F portfolios
0%
Share change
+118,201
Value change
+$1,683,712
Number of holders
84
Reported Shares, Excluding Options vs Price
Reported Value, Excluding Options
Total Investors

Quick Takeaways

  • GEOS - GEOSPACE TECHNOLOGIES CORP - Common Stock is tracked under CUSIP 37364X109.
  • 84 institutions reported positions in Q4 2025.
  • 5 significant owners is listed from Schedule 13D/13G reporting.

What Changed

  • Holder count moved from 84 to 20 between Q4 2025 and Q1 2026.
  • Reported value moved from $120,932,660 to $13,405,539.

Why This Matters

  • You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
  • 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.

Source Evidence

Source: SEC Form 13F

Latest holder context comes from 84 institutions filings for Q4 2025.

Open SEC Evidence

Investment Quick Answers

What is CUSIP 37364X109?
CUSIP 37364X109 identifies GEOS - GEOSPACE TECHNOLOGIES CORP - Common Stock in SEC 13F datasets.

Where can I see the latest institutional holders?
Review the Q4 2025 holders report and the ownership history table below.

Significant Owners of GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS) based on Schedule 13D/G filings

Filer Ownership Change % Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
DISCIPLINED GROWTH INVESTORS INC /MN 8.8% -2.2% $25,754,488 -$501,198 1,131,568 -1.9% DISCIPLINED GROWTH INVESTORS INC /MN 31 Dec 2025
Tieton Capital Management, LLC 6.9% $5,446,975 885,687 Tieton Capital Management, LLC 31 Dec 2024
VANGUARD CAPITAL MANAGEMENT LLC 5.1% $8,029,101 658,123 Vanguard Capital Management 31 Mar 2026
DIMENSIONAL FUND ADVISORS LP 4.9% -4% $10,412,654 -$356,736 628,404 -3.3% Dimensional Fund Advisors LP 30 Sep 2025
BlackRock, Inc. 2.7% $4,871,245 341,602 BlackRock, Inc. 30 Jun 2025

As of 31 Dec 2025, 84 institutional investors reported holding 7,150,608 shares of GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS). This represents 55% of the company’s total 12,904,373 outstanding shares.

Top 25 Institutional Shareholders

The largest institutional shareholders of GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS) together control 50% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.

Institution Ownership % Shares Held Share Change % Portfolio % Holdings Value
DISCIPLINED GROWTH INVESTORS INC /MN 8.8% 1,131,568 -1.9% 0.37% $19,134,815
Tieton Capital Management, LLC 6.9% 884,176 -0.47% 5.1% $14,951,000
VANGUARD GROUP INC 5% 648,222 +2.2% 0% $10,961,434
Moors & Cabot, Inc. 4.5% 575,950 -19% 0.42% $9,739,315
DIMENSIONAL FUND ADVISORS LP 4.2% 544,099 -13% 0% $9,201,101
First Eagle Investment Management, LLC 3.3% 430,273 -18% 0.01% $7,275,916
GRACE & WHITE INC /NY 2.4% 307,795 -2.1% 0.93% $5,204,813
SUSQUEHANNA INTERNATIONAL GROUP, LLP 1.8% 231,285 +58% 0.01% $3,911,029
BlackRock, Inc. 1.7% 221,106 +6.7% 0% $3,738,903
SEI INVESTMENTS CO 1.5% 196,956 0% $3,330,526
Glenorchy Capital Ltd 1.3% 170,992 -6.2% 1.9% $2,891,490
De Lisle Partners LLP 1.1% 147,133 +2% 0.32% $2,482,134
GEODE CAPITAL MANAGEMENT, LLC 1.1% 146,107 +2.5% 0% $2,472,074
US BANCORP \DE\ 0.99% 127,134 +2.5% 0% $2,149,836
STATE STREET CORP 0.98% 125,936 +118% 0% $2,129,578
BRIDGEWAY CAPITAL MANAGEMENT, LLC 0.89% 114,707 -17% 0.04% $1,939,695
MILLENNIUM MANAGEMENT LLC 0.48% 62,020 -49% 0% $1,048,758
EagleClaw Capital Managment, LLC 0.47% 61,150 0% 0.15% $1,034,047
GOLDMAN SACHS GROUP INC 0.47% 60,136 +229% 0% $1,016,900
CITADEL ADVISORS LLC 0.46% 58,726 +16% 0% $993,057
TWO SIGMA INVESTMENTS, LP 0.45% 58,288 +58% 0% $985,650
Cambridge Investment Research Advisors, Inc. 0.45% 58,174 0% $984,000
Brooklyn Investment Group 0.34% 43,799 0.04% $761,665
Empowered Funds, LLC 0.31% 40,291 -37% 0.01% $681,321
683 Capital Management, LLC 0.3% 39,252 0.06% $663,751

Institutional Holders of GEOSPACE TECHNOLOGIES CORP - Common Stock (GEOS) across Reporting Periods

Period Reported Shares, Excl. Options Value, Excl. Options Value Change Price (Median) Investors
2026 Q1 1,098,943 $13,405,539 -$1,280,872 $12.20 20
2025 Q4 7,150,608 $120,932,660 +$1,683,712 $16.91 84
2025 Q3 7,049,687 $133,655,336 -$4,677,131 $18.96 69
2025 Q2 7,322,201 $104,420,941 -$9,753,455 $14.26 62
2025 Q1 8,114,980 $58,502,042 -$3,746,718 $7.21 61
2024 Q4 8,493,657 $85,109,531 -$2,065,817 $10.02 72
2024 Q3 8,436,396 $87,239,231 -$1,281,010 $10.34 72
2024 Q2 8,481,286 $76,158,231 -$217,964 $8.98 68
2024 Q1 8,159,848 $107,622,398 +$5,579,104 $13.19 68
2023 Q4 7,606,990 $98,583,217 +$16,283,302 $12.96 62
2023 Q3 5,856,069 $75,835,938 +$4,437,420 $12.95 44
2023 Q2 5,532,940 $42,990,259 +$1,234,666 $7.77 37
2023 Q1 5,378,621 $37,919,394 +$1,939,647 $7.05 37
2022 Q4 5,183,381 $21,872,890 -$1,304,750 $4.22 31
2022 Q3 6,417,395 $28,298,445 -$3,163,198 $4.41 27
2022 Q2 7,089,416 $33,603,479 -$2,994,728 $4.74 33
2022 Q1 7,651,779 $44,006,748 -$1,862,715 $5.75 39
2021 Q4 7,946,676 $53,271,874 -$605,683 $6.71 39
2021 Q3 8,036,121 $76,736,242 -$1,551,020 $9.55 41
2021 Q2 8,211,485 $66,427,052 +$3,945,960 $8.09 43
2021 Q1 7,713,755 $70,349,186 +$3,313,524 $9.12 44
2020 Q4 7,572,584 $64,826,113 -$3,621,073 $8.56 51
2020 Q3 8,159,878 $50,427,424 -$681,204 $6.18 65
2020 Q2 8,212,672 $61,791,009 -$7,873,133 $7.52 74
2020 Q1 9,254,935 $59,213,416 -$4,244,187 $6.40 70
2019 Q4 9,566,211 $160,372,850 +$5,097,923 $16.77 84
2019 Q3 9,262,523 $142,363,336 +$5,936,196 $15.37 81
2019 Q2 8,878,323 $134,101,031 +$8,351,018 $15.11 81
2019 Q1 8,396,844 $108,673,265 +$1,493,689 $12.94 84
2018 Q4 8,374,913 $86,333,609 -$2,714,115 $10.31 81
2018 Q3 8,569,452 $117,373,264 +$1,372,088 $13.70 85
2018 Q2 8,464,281 $119,019,450 -$17,828,225 $14.06 87
2018 Q1 10,321,379 $101,865,962 -$4,383,092 $9.87 79
2017 Q4 10,750,107 $139,443,122 -$2,623,864 $12.97 86
2017 Q3 10,383,677 $185,169,806 -$11,072,899 $17.82 87
2017 Q2 11,007,146 $152,228,472 -$4,252,676 $13.83 82
2017 Q1 11,258,227 $182,732,137 +$24,053,814 $16.23 88
2016 Q4 11,241,427 $228,893,997 -$5,451,522 $20.36 100
2016 Q3 11,454,153 $222,980,688 -$10,546,161 $19.48 93
2016 Q2 12,024,399 $196,848,241 -$10,782,289 $16.37 91
2016 Q1 12,750,448 $157,438,556 -$8,255,608 $12.34 89
2015 Q4 13,145,288 $184,945,911 -$2,544,381 $14.07 94
2015 Q3 13,932,453 $192,406,207 -$16,065,707 $13.81 104
2015 Q2 14,428,047 $332,567,940 +$7,709,012 $23.05 112
2015 Q1 14,062,395 $232,161,086 +$1,834,073 $16.51 111
2014 Q4 13,614,279 $360,770,462 -$17,739,626 $26.50 125
2014 Q3 13,298,708 $467,027,525 -$78,628,186 $35.15 132
2014 Q2 14,546,049 $801,183,223 -$13,097,958 $55.08 139
2014 Q1 14,645,915 $969,003,714 -$41,453,678 $66.17 151
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