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Geospace Technologies Corporation (GEOS) institutional ownership

Latest close $6.96 Jul 27, 2026
Market cap$101M 52-week range SectorEnergy
Funds holding · Q1 2026
82
reported GEOS position changes
Top owners · Q1 2026
No disclosed owners are available.
Institutional activity · Q1 2026
Activity unavailable N/A
40 buyers · 42 sellers

Geospace Technologies Corporation (GEOS) price and institutional activity

Dates

Q1 2026

$0 bought by 40 investors
Marshall Wace, LLPGrace & White Inc +38 more
$0 sold by 42 investors
Moors & Cabot, Inc.First Eagle Investment Management, LLC +40 more
Bought Sold Totals per quarter; hover a bar for the names.

Geospace Technologies Corporation (GEOS) institutional activity · 82

Investor Type Est. change Change Δ Own Date
Moors & Cabot, Inc. · Reduced
Change −385K Date Q1 2026
Moors & Cabot, Inc. Reduced· Q1 2026 −385K Q1 2026
First Eagle Investment Management, LLC · Reduced
Change −190K Δ Own −44.2% Date Q1 2026
First Eagle Investment Management, LLC Reduced· Q1 2026 −190K −44.2% Q1 2026
Marshall Wace, LLP · Added
Change +177K Date Q1 2026
Marshall Wace, LLP Added· Q1 2026 +177K Q1 2026
Grace & White Inc · Added
Change +165K Date Q1 2026
Grace & White Inc Added· Q1 2026 +165K Q1 2026
Susquehanna International Group, LLP · Reduced
Change −85K Date Q1 2026
Susquehanna International Group, LLP Reduced· Q1 2026 −85K Q1 2026
Goldman Sachs Group Inc · Exited
Change −60K Δ Own −100.0% Date Q1 2026
Goldman Sachs Group Inc Exited· Q1 2026 −60K −100.0% Q1 2026
Dimensional · Reduced
Change −53K Date Q1 2026
Dimensional Reduced· Q1 2026 −53K Q1 2026
Millennium Management LLC · Added
Change +45K Date Q1 2026
Millennium Management LLC Added· Q1 2026 +45K Q1 2026
Brooklyn Investment Group · Exited
Change −44K Δ Own −100.0% Date Q1 2026
Brooklyn Investment Group Exited· Q1 2026 −44K −100.0% Q1 2026
Peapod Lane Capital LLC · Exited
Change −38K Δ Own −100.0% Date Q1 2026
Peapod Lane Capital LLC Exited· Q1 2026 −38K −100.0% Q1 2026
Bridgeway Capital Management, LLC · Reduced
Change −36K Date Q1 2026
Bridgeway Capital Management, LLC Reduced· Q1 2026 −36K Q1 2026
Disciplined Growth Investors Inc · Reduced
Change −30K Date Q1 2026
Disciplined Growth Investors Inc Reduced· Q1 2026 −30K Q1 2026
Kingsview Wealth Management, LLC · New
Change +28K Date Q1 2026
Kingsview Wealth Management, LLC New· Q1 2026 +28K Q1 2026
Tieton Capital Management, LLC · Added
Change +28K Date Q1 2026
Tieton Capital Management, LLC Added· Q1 2026 +28K Q1 2026
Alphaquest LLC · Exited
Change −28K Δ Own −100.0% Date Q1 2026
Alphaquest LLC Exited· Q1 2026 −28K −100.0% Q1 2026
Data through Q1 2026 · filed Jun 2, 2026
15 of 82

Famous investor activity in Geospace Technologies Corporation (GEOS)

Geospace Technologies Corporation (GEOS) insider trading

Company insiders, action and economics first; trade and filed dates last.
Dates
Insider Title Type Price Qty Value Owned ΔOwn Trade date Filed date
Miles Richard F. · Director Grant (A) 4K
Owned 48K Trade date Feb 9, 2026 Filed date Feb 9, 2026
Miles Richard F. Director Grant (A) 4K 48K Feb 9, 2026 Feb 9, 2026
Davis Thomas L. · Director Grant (A) 4K
Owned 65K Trade date Feb 9, 2026 Filed date Feb 9, 2026
Davis Thomas L. Director Grant (A) 4K 65K Feb 9, 2026 Feb 9, 2026
Giesinger Edgar R. Jr · Director Grant (A) 4K
Owned 43K Trade date Feb 9, 2026 Filed date Feb 9, 2026
Giesinger Edgar R. Jr Director Grant (A) 4K 43K Feb 9, 2026 Feb 9, 2026
Kelley Richard James · Officer Tax withholding or exercise payment (F) -275
Owned 42K Trade date Dec 5, 2025 Filed date Dec 5, 2025
Kelley Richard James Officer Tax withholding or exercise payment (F) -275 42K Dec 5, 2025 Dec 5, 2025
Curda Robert L. · Officer Tax withholding or exercise payment (F) -165
Owned 61K Trade date Dec 5, 2025 Filed date Dec 5, 2025
Curda Robert L. Officer Tax withholding or exercise payment (F) -165 61K Dec 5, 2025 Dec 5, 2025
Bushey Ronald Todd · Officer Tax withholding or exercise payment (F) -275
Owned 12K Trade date Dec 2, 2025 Filed date Dec 5, 2025
Bushey Ronald Todd Officer Tax withholding or exercise payment (F) -275 12K Dec 2, 2025 Dec 5, 2025
Curda Robert L. · Officer Grant (A) 4K
Owned 61K Trade date Nov 25, 2025 Filed date Dec 1, 2025
Curda Robert L. Officer Grant (A) 4K 61K Nov 25, 2025 Dec 1, 2025
Kelley Richard James · Officer Grant (A) 8K
Owned 42K Trade date Nov 25, 2025 Filed date Nov 25, 2025
Kelley Richard James Officer Grant (A) 8K 42K Nov 25, 2025 Nov 25, 2025
Bushey Ronald Todd · Officer Grant (A) 4K
Owned 7K Trade date Nov 25, 2025 Filed date Nov 25, 2025
Bushey Ronald Todd Officer Grant (A) 4K 7K Nov 25, 2025 Nov 25, 2025
Kelley Richard James · Officer Tax withholding or exercise payment (F) -298
Owned 34K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Kelley Richard James Officer Tax withholding or exercise payment (F) -298 34K Nov 20, 2025 Nov 25, 2025
Kelley Richard James · Officer Grant (A) 4K
Owned 34K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Kelley Richard James Officer Grant (A) 4K 34K Nov 20, 2025 Nov 25, 2025
Curda Robert L. · Officer Tax withholding or exercise payment (F) -198
Owned 57K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Curda Robert L. Officer Tax withholding or exercise payment (F) -198 57K Nov 20, 2025 Nov 25, 2025
Curda Robert L. · Officer Grant (A) 4K
Owned 57K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Curda Robert L. Officer Grant (A) 4K 57K Nov 20, 2025 Nov 25, 2025
Bushey Ronald Todd · Officer Tax withholding or exercise payment (F) -198
Owned 3K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Bushey Ronald Todd Officer Tax withholding or exercise payment (F) -198 3K Nov 20, 2025 Nov 25, 2025
Bushey Ronald Todd · Officer Grant (A) 4K
Owned 4K Trade date Nov 20, 2025 Filed date Nov 25, 2025
Bushey Ronald Todd Officer Grant (A) 4K 4K Nov 20, 2025 Nov 25, 2025
15 of 15

Geospace Technologies Corporation (GEOS) activist and large shareholders

Dates
Owner/Filer identity Shares reported % of shares outstanding Filing date
Disciplined Growth Investors Inc 1.1M
% of shares outstanding 8.5% Filing date May 15, 2026
Disciplined Growth Investors Inc 1.1M 8.5% May 15, 2026
Tieton Capital Management, LLC 886K
% of shares outstanding 6.9% Filing date Feb 11, 2025
Tieton Capital Management, LLC 886K 6.9% Feb 11, 2025
Blackrock, Inc. 886K
% of shares outstanding 6.9% Filing date Nov 8, 2024
Blackrock, Inc. 886K 6.9% Nov 8, 2024
Vanguard Capital Management 658K
% of shares outstanding 5.1% Filing date Apr 29, 2026
Vanguard Capital Management 658K 5.1% Apr 29, 2026
Dimensional Fund Advisors LP 650K
% of shares outstanding 5.1% Filing date Jan 23, 2025
Dimensional Fund Advisors LP 650K 5.1% Jan 23, 2025
Vanguard Group Inc 666K
% of shares outstanding 5.0% Filing date Feb 13, 2024
Vanguard Group Inc 666K 5.0% Feb 13, 2024
Gate City Capital Management, LLC
% of shares outstanding 0.0% Filing date Feb 9, 2024
Gate City Capital Management, LLC 0.0% Feb 9, 2024
7 of 7

Geospace Technologies Corporation (GEOS) ownership FAQ

Who owns GEOS?

82 reporting institutions disclosed GEOS position changes in the Q1 2026 snapshot.

How is institutional activity calculated?

For each manager, WhoBought compares accepted consecutive 13F share counts. Share change is current shares minus prior shares. Estimated dollar change is that signed share change multiplied by the split-adjusted quarter-mean close. The activity table on this page uses Q1 2026.

What are activist and large shareholder filings?

An investor crossing 5% of a share class generally files Schedule 13D for activist intent or Schedule 13G for a passive position. The technical form names appear here rather than in the activity rows.

Where does this data come from?

Ownership and institutional activity come from SEC Form 13F filings. Insider activity comes from SEC Form 4, and large-shareholder activity from SEC Schedules 13D and 13G. FMP supplies price data only. Company logos use the local verified Parqet cache with one shared fallback.

Why are ownership reports delayed?

Form 13F is a quarterly disclosure and is normally filed after the quarter ends. Every ownership and activity value therefore names its represented period; it is not presented as a live position.

How are missing table values shown?

A muted dash marks a missing table value. It means the filing omitted the value, comparable data is unavailable, or no prior position exists for comparison.